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lanstreamer.c
资源名称：linux-2.4.20.tar.gz　[点击查看]
上传用户：jlfgdled
上传日期：2013-04-10
资源大小：33168k
文件大小：67k
源码类别：

Linux/Unix编程

开发平台：

Unix_Linux

lanstreamer.c：源码内容
  1. /*
  2.  *   lanstreamer.c -- driver for the IBM Auto LANStreamer PCI Adapter
  3.  *
  4.  *  Written By: Mike Sullivan, IBM Corporation
  5.  *
  6.  *  Copyright (C) 1999 IBM Corporation
  7.  *
  8.  *  Linux driver for IBM PCI tokenring cards based on the LanStreamer MPC
  9.  *  chipset. 
  10.  *
  11.  *  This driver is based on the olympic driver for IBM PCI TokenRing cards (Pit/Pit-Phy/Olympic
  12.  *  chipsets) written  by:
  13.  *      1999 Peter De Schrijver All Rights Reserved
  14.  * 1999 Mike Phillips (phillim@amtrak.com)
  15.  *
  16.  *  Base Driver Skeleton:
  17.  *      Written 1993-94 by Donald Becker.
  18.  *
  19.  *      Copyright 1993 United States Government as represented by the
  20.  *      Director, National Security Agency.
  21.  *
  22.  * This program is free software; you can redistribute it and/or modify      
  23.  * it under the terms of the GNU General Public License as published by      
  24.  * the Free Software Foundation; either version 2 of the License, or         
  25.  * (at your option) any later version.                                       
  26.  *                                                                           
  27.  * This program is distributed in the hope that it will be useful,           
  28.  * but WITHOUT ANY WARRANTY; without even the implied warranty of            
  29.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             
  30.  * GNU General Public License for more details.                              
  31.  *                                                                           
  32.  * NO WARRANTY                                                               
  33.  * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR        
  34.  * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT      
  35.  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,      
  36.  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is    
  37.  * solely responsible for determining the appropriateness of using and       
  38.  * distributing the Program and assumes all risks associated with its        
  39.  * exercise of rights under this Agreement, including but not limited to     
  40.  * the risks and costs of program errors, damage to or loss of data,         
  41.  * programs or equipment, and unavailability or interruption of operations.  
  42.  *                                                                           
  43.  * DISCLAIMER OF LIABILITY                                                   
  44.  * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY   
  45.  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL        
  46.  * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND   
  47.  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR     
  48.  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE    
  49.  * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED  
  50.  * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES             
  51.  *                                                                           
  52.  * You should have received a copy of the GNU General Public License         
  53.  * along with this program; if not, write to the Free Software               
  54.  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
  55.  *                                                                           
  56.  * 
  57.  *  12/10/99 - Alpha Release 0.1.0
  58.  *            First release to the public
  59.  *  03/03/00 - Merged to kernel, indented -kr -i8 -bri0, fixed some missing
  60.  * malloc free checks, reviewed code. <alan@redhat.com>
  61.  *  03/13/00 - Added spinlocks for smp
  62.  *  03/08/01 - Added support for module_init() and module_exit()
  63.  *  08/15/01 - Added ioctl() functionality for debugging, changed netif_*_queue
  64.  *             calls and other incorrectness - Kent Yoder <yoder1@us.ibm.com>
  65.  *  11/05/01 - Restructured the interrupt function, added delays, reduced the 
  66.  *             the number of TX descriptors to 1, which together can prevent 
  67.  *             the card from locking up the box - <yoder1@us.ibm.com>
  68.  *  09/27/02 - New PCI interface + bug fix. - <yoder1@us.ibm.com>
  69.  *  
  70.  *  To Do:
  71.  *
  72.  *
  73.  *  If Problems do Occur
  74.  *  Most problems can be rectified by either closing and opening the interface
  75.  *  (ifconfig down and up) or rmmod and insmod'ing the driver (a bit difficult
  76.  *  if compiled into the kernel).
  77.  */
  79. /* Change STREAMER_DEBUG to 1 to get verbose, and I mean really verbose, messages */
  81. #define STREAMER_DEBUG 0
  82. #define STREAMER_DEBUG_PACKETS 0
  84. /* Change STREAMER_NETWORK_MONITOR to receive mac frames through the arb channel.
  85.  * Will also create a /proc/net/streamer_tr entry if proc_fs is compiled into the
  86.  * kernel.
  87.  * Intended to be used to create a ring-error reporting network module 
  88.  * i.e. it will give you the source address of beaconers on the ring 
  89.  */
  91. #define STREAMER_NETWORK_MONITOR 0
  93. /* #define CONFIG_PROC_FS */
  95. /*
  96.  *  Allow or disallow ioctl's for debugging
  97.  */
  99. #define STREAMER_IOCTL 0
  101. #include <linux/config.h>
  102. #include <linux/module.h>
  104. #include <linux/kernel.h>
  105. #include <linux/sched.h>
  106. #include <linux/errno.h>
  107. #include <linux/timer.h>
  108. #include <linux/in.h>
  109. #include <linux/ioport.h>
  110. #include <linux/string.h>
  111. #include <linux/proc_fs.h>
  112. #include <linux/ptrace.h>
  113. #include <linux/skbuff.h>
  114. #include <linux/interrupt.h>
  115. #include <linux/delay.h>
  116. #include <linux/netdevice.h>
  117. #include <linux/trdevice.h>
  118. #include <linux/stddef.h>
  119. #include <linux/init.h>
  120. #include <linux/pci.h>
  121. #include <linux/spinlock.h>
  122. #include <linux/version.h>
  123. #include <net/checksum.h>
  125. #include <asm/io.h>
  126. #include <asm/system.h>
  127. #include <asm/bitops.h>
  129. #include "lanstreamer.h"
  131. /* I've got to put some intelligence into the version number so that Peter and I know
  132.  * which version of the code somebody has got. 
  133.  * Version Number = a.b.c.d  where a.b.c is the level of code and d is the latest author.
  134.  * So 0.0.1.pds = Peter, 0.0.1.mlp = Mike
  135.  * 
  136.  * Official releases will only have an a.b.c version number format.
  137.  */
  139. static char version[] = "LanStreamer.c v0.4.0 03/08/01 - Mike Sullivann"
  140.                         "              v0.5.2 09/30/02 - Kent Yoder";
  142. static struct pci_device_id streamer_pci_tbl[] __initdata = {
  143. { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_TR, PCI_ANY_ID, PCI_ANY_ID,},
  144. {} /* terminating entry */
  145. };
  146. MODULE_DEVICE_TABLE(pci,streamer_pci_tbl);
  149. static char *open_maj_error[] = {
  150. "No error", "Lobe Media Test", "Physical Insertion",
  151. "Address Verification", "Neighbor Notification (Ring Poll)",
  152. "Request Parameters", "FDX Registration Request",
  153. "FDX Lobe Media Test", "FDX Duplicate Address Check",
  154. "Unknown stage"
  155. };
  157. static char *open_min_error[] = {
  158. "No error", "Function Failure", "Signal Lost", "Wire Fault",
  159. "Ring Speed Mismatch", "Timeout", "Ring Failure", "Ring Beaconing",
  160. "Duplicate Node Address", "Request Parameters", "Remove Received",
  161. "Reserved", "Reserved", "No Monitor Detected for RPL",
  162. "Monitor Contention failer for RPL", "FDX Protocol Error"
  163. };
  165. /* Module paramters */
  167. /* Ring Speed 0,4,16
  168.  * 0 = Autosense         
  169.  * 4,16 = Selected speed only, no autosense
  170.  * This allows the card to be the first on the ring
  171.  * and become the active monitor.
  172.  *
  173.  * WARNING: Some hubs will allow you to insert
  174.  * at the wrong speed
  175.  */
  177. static int ringspeed[STREAMER_MAX_ADAPTERS] = { 0, };
  179. MODULE_PARM(ringspeed, "1-" __MODULE_STRING(STREAMER_MAX_ADAPTERS) "i");
  181. /* Packet buffer size */
  183. static int pkt_buf_sz[STREAMER_MAX_ADAPTERS] = { 0, };
  185. MODULE_PARM(pkt_buf_sz, "1-" __MODULE_STRING(STREAMER_MAX_ADAPTERS) "i");
  187. /* Message Level */
  189. static int message_level[STREAMER_MAX_ADAPTERS] = { 1, };
  191. MODULE_PARM(message_level,
  192.     "1-" __MODULE_STRING(STREAMER_MAX_ADAPTERS) "i");
  194. #if STREAMER_IOCTL
  195. static int streamer_ioctl(struct net_device *, struct ifreq *, int);
  196. #endif
  198. static int streamer_reset(struct net_device *dev);
  199. static int streamer_open(struct net_device *dev);
  200. static int streamer_xmit(struct sk_buff *skb, struct net_device *dev);
  201. static int streamer_close(struct net_device *dev);
  202. static void streamer_set_rx_mode(struct net_device *dev);
  203. static void streamer_interrupt(int irq, void *dev_id,
  204.        struct pt_regs *regs);
  205. static struct net_device_stats *streamer_get_stats(struct net_device *dev);
  206. static int streamer_set_mac_address(struct net_device *dev, void *addr);
  207. static void streamer_arb_cmd(struct net_device *dev);
  208. static int streamer_change_mtu(struct net_device *dev, int mtu);
  209. static void streamer_srb_bh(struct net_device *dev);
  210. static void streamer_asb_bh(struct net_device *dev);
  211. #if STREAMER_NETWORK_MONITOR
  212. #ifdef CONFIG_PROC_FS
  213. static int streamer_proc_info(char *buffer, char **start, off_t offset,
  214.       int length, int *eof, void *data);
  215. static int sprintf_info(char *buffer, struct net_device *dev);
  216. struct streamer_private *dev_streamer=NULL;
  217. #endif
  218. #endif
  220. static int __devinit streamer_init_one(struct pci_dev *pdev,
  221.        const struct pci_device_id *ent)
  222. {
  223.   struct net_device *dev=NULL;
  224. struct streamer_private *streamer_priv;
  225.   __u32 pio_start, pio_end, pio_flags, pio_len;
  226.   __u32 mmio_start, mmio_end, mmio_flags, mmio_len;
  227.   int rc=0;
  228.   static int card_no=-1;
  229.   u16 pcr;
  230.   u8 cls = 0;
  232. #if STREAMER_DEBUG
  233.   printk("lanstreamer::streamer_init_one, entry pdev %pn",pdev);
  234. #endif
  236. card_no++;
  237.   dev=init_trdev(dev, sizeof(*streamer_priv));
  238.   if(dev==NULL) {
  239. printk(KERN_ERR "lanstreamer: out of memory.n");
  240.     return -ENOMEM;
  241. }
  242. SET_MODULE_OWNER(dev);
  243.   streamer_priv=dev->priv;
  245. #if STREAMER_NETWORK_MONITOR
  246. #ifdef CONFIG_PROC_FS
  247.   if (!dev_streamer) {
  248.     create_proc_read_entry("net/streamer_tr",0,0,streamer_proc_info,NULL); 
  249.   }
  250.   streamer_priv->next=dev_streamer;
  251.   dev_streamer=streamer_priv;
  252. #endif
  253. #endif
  254.  
  255.   if(pci_set_dma_mask(pdev, 0xFFFFFFFF)) {
  256.     printk(KERN_ERR "%s: No suitable PCI mapping available.n", dev->name);
  257.     rc = -ENODEV;
  258.     goto err_out;
  259.   }
  260.   
  261.   if (pci_enable_device(pdev)) {
  262.     printk(KERN_ERR "lanstreamer: unable to enable pci devicen");
  263.     rc=-EIO;
  264.     goto err_out;
  265.   }
  266.   
  267.   pci_set_master(pdev);
  268.   
  269.   pio_start = pci_resource_start(pdev, 0);
  270.   pio_end = pci_resource_end(pdev, 0);
  271.   pio_flags = pci_resource_flags(pdev, 0);
  272.   pio_len = pci_resource_len(pdev, 0);
  273.   
  274.   mmio_start = pci_resource_start(pdev, 1);
  275.   mmio_end = pci_resource_end(pdev, 1);
  276.   mmio_flags = pci_resource_flags(pdev, 1);
  277.   mmio_len = pci_resource_len(pdev, 1);
  278.   
  279. #if STREAMER_DEBUG
  280.   printk("lanstreamer: pio_start %x pio_end %x pio_len %x pio_flags %xn",
  281.  pio_start, pio_end, pio_len, pio_flags);
  282.   printk("lanstreamer: mmio_start %x mmio_end %x mmio_len %x mmio_flags %xn",
  283.  mmio_start, mmio_end, mmio_flags, mmio_len);
  284. #endif
  286.   if (!request_region(pio_start, pio_len, "lanstreamer")) {
  287.     printk(KERN_ERR "lanstreamer: unable to get pci io addr %xn",pio_start);
  288.     rc= -EBUSY;
  289.     goto err_out;
  290.   }
  292.   if (!request_mem_region(mmio_start, mmio_len, "lanstreamer")) {
  293.     printk(KERN_ERR "lanstreamer: unable to get pci mmio addr %xn",mmio_start);
  294.     rc= -EBUSY;
  295.     goto err_out_free_pio;
  296.   }
  298.   streamer_priv->streamer_mmio=ioremap(mmio_start, mmio_len);
  299.   if (streamer_priv->streamer_mmio == NULL) {
  300.     printk(KERN_ERR "lanstreamer: unable to remap MMIO %xn",mmio_start);
  301.     rc= -EIO;
  302.     goto err_out_free_mmio;
  303. }
  305.   init_waitqueue_head(&streamer_priv->srb_wait);
  306.   init_waitqueue_head(&streamer_priv->trb_wait);
  308. dev->open = &streamer_open;
  309. dev->hard_start_xmit = &streamer_xmit;
  310. dev->change_mtu = &streamer_change_mtu;
  311. dev->stop = &streamer_close;
  312. #if STREAMER_IOCTL
  313. dev->do_ioctl = &streamer_ioctl;
  314. #else
  315. dev->do_ioctl = NULL;
  316. #endif
  317. dev->set_multicast_list = &streamer_set_rx_mode;
  318. dev->get_stats = &streamer_get_stats;
  319. dev->set_mac_address = &streamer_set_mac_address;
  320.   dev->irq = pdev->irq;
  321.   dev->base_addr=pio_start;
  322.   
  323.   streamer_priv->streamer_card_name = (char *)pdev->resource[0].name;
  324.   streamer_priv->pci_dev=pdev;
  325.   
  326.   if ((pkt_buf_sz[card_no] < 100) || (pkt_buf_sz[card_no] > 18000))
  327.     streamer_priv->pkt_buf_sz = PKT_BUF_SZ;
  328.   else
  329.     streamer_priv->pkt_buf_sz = pkt_buf_sz[card_no];
  330.   
  331.   streamer_priv->streamer_ring_speed = ringspeed[card_no];
  332.   streamer_priv->streamer_message_level = message_level[card_no];
  334.   pci_set_drvdata(pdev, dev);
  336.   spin_lock_init(&streamer_priv->streamer_lock);
  337.   
  338.   pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cls);
  339.   cls <<= 2;
  340.   if (cls != SMP_CACHE_BYTES) {
  341.          printk(KERN_INFO "  PCI cache line size set incorrectly "
  342.                 "(%i bytes) by BIOS/FW, ", cls);
  343.          if (cls > SMP_CACHE_BYTES)
  344.                 printk("expecting %in", SMP_CACHE_BYTES);
  345.          else {
  346.                 printk("correcting to %in", SMP_CACHE_BYTES);
  347.                 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
  348.                                       SMP_CACHE_BYTES >> 2);
  349.          }
  350.   }
  352.   pci_read_config_word (pdev, PCI_COMMAND, &pcr);
  354.   pcr |= (PCI_COMMAND_INVALIDATE | PCI_COMMAND_SERR);
  356.   pci_write_config_word (pdev, PCI_COMMAND, pcr);
  357.   pci_read_config_word (pdev, PCI_COMMAND, &pcr);
  359.   printk("%s n", version);
  360.   printk("%s: %s. I/O at %hx, MMIO at %p, using irq %dn",dev->name,
  361.  streamer_priv->streamer_card_name,
  362.  (unsigned int) dev->base_addr,
  363.  streamer_priv->streamer_mmio, 
  364.  dev->irq);
  366.   if (!streamer_reset(dev)) {
  367.     return 0;
  368.   }
  370.   iounmap(streamer_priv->streamer_mmio);
  371. err_out_free_mmio:
  372.   release_mem_region(mmio_start, mmio_len);
  373. err_out_free_pio:
  374.   release_region(pio_start, pio_len);
  375. err_out:
  376.   unregister_trdev(dev);
  377.   kfree(dev);
  378. #if STREAMER_DEBUG
  379.   printk("lanstreamer: Exit error %xn",rc);
  380. #endif
  381.   return rc;
  382. }
  384. static void __devexit streamer_remove_one(struct pci_dev *pdev) {
  385.   struct net_device *dev=pci_get_drvdata(pdev);
  386.   struct streamer_private *streamer_priv;
  388. #if STREAMER_DEBUG
  389.   printk("lanstreamer::streamer_remove_one entry pdev %pn",pdev);
  390. #endif
  392.   if (dev == NULL) {
  393.     printk(KERN_ERR "lanstreamer::streamer_remove_one, ERROR dev is NULLn");
  394.     return;
  395. }
  397.   streamer_priv=dev->priv;
  398.   if (streamer_priv == NULL) {
  399.     printk(KERN_ERR "lanstreamer::streamer_remove_one, ERROR dev->priv is NULLn");
  400.     return;
  401. }
  403. #if STREAMER_NETWORK_MONITOR
  404. #ifdef CONFIG_PROC_FS
  405.   {
  406.     struct streamer_private *slast;
  407.     struct streamer_private *scurrent;
  408.     if (streamer_priv == dev_streamer) {
  409.       dev_streamer=dev_streamer->next;
  410.     } else {
  411.       for(slast=scurrent=dev_streamer; dev_streamer; slast=scurrent, scurrent=scurrent->next) {
  412. if (scurrent == streamer_priv) {
  413.   slast->next=scurrent->next;
  414.   break;
  415. }
  416.       }
  417.     }
  418.     if (!dev_streamer) {
  419.       remove_proc_entry("net/streamer_tr", NULL);
  420.     }
  421.   }
  422. #endif
  423. #endif
  425.   unregister_trdev(dev);
  426.   release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev,0));
  427.   release_mem_region(pci_resource_start(pdev, 1), pci_resource_len(pdev,1));
  428.   kfree(dev);
  429.   pci_set_drvdata(pdev, NULL);
  430. }
  433. static int streamer_reset(struct net_device *dev)
  434. {
  435. struct streamer_private *streamer_priv;
  436. __u8 *streamer_mmio;
  437. unsigned long t;
  438. unsigned int uaa_addr;
  439. struct sk_buff *skb = 0;
  440. __u16 misr;
  442. streamer_priv = (struct streamer_private *) dev->priv;
  443. streamer_mmio = streamer_priv->streamer_mmio;
  445. writew(readw(streamer_mmio + BCTL) | BCTL_SOFTRESET, streamer_mmio + BCTL);
  446. t = jiffies;
  447. /* Hold soft reset bit for a while */
  448. current->state = TASK_UNINTERRUPTIBLE;
  449. schedule_timeout(HZ);
  451. writew(readw(streamer_mmio + BCTL) & ~BCTL_SOFTRESET,
  452.        streamer_mmio + BCTL);
  454. #if STREAMER_DEBUG
  455. printk("BCTL: %xn", readw(streamer_mmio + BCTL));
  456. printk("GPR: %xn", readw(streamer_mmio + GPR));
  457. printk("SISRMASK: %xn", readw(streamer_mmio + SISR_MASK));
  458. #endif
  459. writew(readw(streamer_mmio + BCTL) | (BCTL_RX_FIFO_8 | BCTL_TX_FIFO_8), streamer_mmio + BCTL );
  461. if (streamer_priv->streamer_ring_speed == 0) { /* Autosense */
  462. writew(readw(streamer_mmio + GPR) | GPR_AUTOSENSE,
  463.        streamer_mmio + GPR);
  464. if (streamer_priv->streamer_message_level)
  465. printk(KERN_INFO "%s: Ringspeed autosense mode onn",
  466.        dev->name);
  467. } else if (streamer_priv->streamer_ring_speed == 16) {
  468. if (streamer_priv->streamer_message_level)
  469. printk(KERN_INFO "%s: Trying to open at 16 Mbps as requestedn",
  470.        dev->name);
  471. writew(GPR_16MBPS, streamer_mmio + GPR);
  472. } else if (streamer_priv->streamer_ring_speed == 4) {
  473. if (streamer_priv->streamer_message_level)
  474. printk(KERN_INFO "%s: Trying to open at 4 Mbps as requestedn",
  475.        dev->name);
  476. writew(0, streamer_mmio + GPR);
  477. }
  479. skb = dev_alloc_skb(streamer_priv->pkt_buf_sz);
  480. if (!skb) {
  481. printk(KERN_INFO "%s: skb allocation for diagnostics failed...proceedingn",
  482.        dev->name);
  483. } else {
  484.         struct streamer_rx_desc *rx_ring;
  485.                 u8 *data;
  487. rx_ring=(struct streamer_rx_desc *)skb->data;
  488. data=((u8 *)skb->data)+sizeof(struct streamer_rx_desc);
  489. rx_ring->forward=0;
  490. rx_ring->status=0;
  491. rx_ring->buffer=cpu_to_le32(pci_map_single(streamer_priv->pci_dev, data, 
  492. 512, PCI_DMA_FROMDEVICE));
  493. rx_ring->framelen_buflen=512; 
  494. writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev, rx_ring, 512, PCI_DMA_FROMDEVICE)),
  495. streamer_mmio+RXBDA);
  496. }
  498. #if STREAMER_DEBUG
  499. printk("GPR = %xn", readw(streamer_mmio + GPR));
  500. #endif
  501. /* start solo init */
  502. writew(SISR_MI, streamer_mmio + SISR_MASK_SUM);
  504. while (!((readw(streamer_mmio + SISR)) & SISR_SRB_REPLY)) {
  505. current->state = TASK_INTERRUPTIBLE;
  506. schedule_timeout(HZ/10);
  507. if (jiffies - t > 40 * HZ) {
  508. printk(KERN_ERR
  509.        "IBM PCI tokenring card not respondingn");
  510. release_region(dev->base_addr, STREAMER_IO_SPACE);
  511. if (skb)
  512. dev_kfree_skb(skb);
  513. return -1;
  514. }
  515. }
  516. writew(~SISR_SRB_REPLY, streamer_mmio + SISR_RUM);
  517. misr = readw(streamer_mmio + MISR_RUM);
  518. writew(~misr, streamer_mmio + MISR_RUM);
  520. if (skb)
  521. dev_kfree_skb(skb); /* release skb used for diagnostics */
  523. #if STREAMER_DEBUG
  524. printk("LAPWWO: %x, LAPA: %x LAPE:  %xn",
  525.        readw(streamer_mmio + LAPWWO), readw(streamer_mmio + LAPA),
  526.        readw(streamer_mmio + LAPE));
  527. #endif
  529. #if STREAMER_DEBUG
  530. {
  531. int i;
  532. writew(readw(streamer_mmio + LAPWWO),
  533.        streamer_mmio + LAPA);
  534. printk("initialization response srb dump: ");
  535. for (i = 0; i < 10; i++)
  536. printk("%x:",
  537.        ntohs(readw(streamer_mmio + LAPDINC)));
  538. printk("n");
  539. }
  540. #endif
  542. writew(readw(streamer_mmio + LAPWWO) + 6, streamer_mmio + LAPA);
  543. if (readw(streamer_mmio + LAPD)) {
  544. printk(KERN_INFO "tokenring card intialization failed. errorcode : %xn",
  545.        ntohs(readw(streamer_mmio + LAPD)));
  546. release_region(dev->base_addr, STREAMER_IO_SPACE);
  547. return -1;
  548. }
  550. writew(readw(streamer_mmio + LAPWWO) + 8, streamer_mmio + LAPA);
  551. uaa_addr = ntohs(readw(streamer_mmio + LAPDINC));
  552. readw(streamer_mmio + LAPDINC); /* skip over Level.Addr field */
  553. streamer_priv->streamer_addr_table_addr = ntohs(readw(streamer_mmio + LAPDINC));
  554. streamer_priv->streamer_parms_addr = ntohs(readw(streamer_mmio + LAPDINC));
  556. #if STREAMER_DEBUG
  557. printk("UAA resides at %xn", uaa_addr);
  558. #endif
  560. /* setup uaa area for access with LAPD */
  561. {
  562. int i;
  563. __u16 addr;
  564. writew(uaa_addr, streamer_mmio + LAPA);
  565. for (i = 0; i < 6; i += 2) {
  566.         addr=ntohs(readw(streamer_mmio+LAPDINC));
  567. dev->dev_addr[i]= (addr >> 8) & 0xff;
  568. dev->dev_addr[i+1]= addr & 0xff;
  569. }
  570. #if STREAMER_DEBUG
  571. printk("Adapter address: ");
  572. for (i = 0; i < 6; i++) {
  573. printk("%02x:", dev->dev_addr[i]);
  574. }
  575. printk("n");
  576. #endif
  577. }
  578. return 0;
  579. }
  581. static int streamer_open(struct net_device *dev)
  582. {
  583. struct streamer_private *streamer_priv = (struct streamer_private *) dev->priv;
  584. __u8 *streamer_mmio = streamer_priv->streamer_mmio;
  585. unsigned long flags;
  586. char open_error[255];
  587. int i, open_finished = 1;
  588. __u16 srb_word;
  589. __u16 srb_open;
  590. int rc;
  592. if (readw(streamer_mmio+BMCTL_SUM) & BMCTL_RX_ENABLED) {
  593.         rc=streamer_reset(dev);
  594. }
  596. if (request_irq(dev->irq, &streamer_interrupt, SA_SHIRQ, "lanstreamer", dev)) {
  597. return -EAGAIN;
  598. }
  599. #if STREAMER_DEBUG
  600. printk("BMCTL: %xn", readw(streamer_mmio + BMCTL_SUM));
  601. printk("pending ints: %xn", readw(streamer_mmio + SISR));
  602. #endif
  604. writew(SISR_MI | SISR_SRB_REPLY, streamer_mmio + SISR_MASK); /* more ints later, doesn't stop arb cmd interrupt */
  605. writew(LISR_LIE, streamer_mmio + LISR); /* more ints later */
  607. /* adapter is closed, so SRB is pointed to by LAPWWO */
  608. writew(readw(streamer_mmio + LAPWWO), streamer_mmio + LAPA);
  610. #if STREAMER_DEBUG
  611. printk("LAPWWO: %x, LAPA: %xn", readw(streamer_mmio + LAPWWO),
  612.        readw(streamer_mmio + LAPA));
  613. printk("LAPE: %xn", readw(streamer_mmio + LAPE));
  614. printk("SISR Mask = %04xn", readw(streamer_mmio + SISR_MASK));
  615. #endif
  616. do {
  617. int i;
  619. for (i = 0; i < SRB_COMMAND_SIZE; i += 2) {
  620. writew(0, streamer_mmio + LAPDINC);
  621. }
  623. writew(readw(streamer_mmio+LAPWWO),streamer_mmio+LAPA);
  624. writew(htons(SRB_OPEN_ADAPTER<<8),streamer_mmio+LAPDINC) ;  /* open */
  625. writew(htons(STREAMER_CLEAR_RET_CODE<<8),streamer_mmio+LAPDINC);
  626. writew(STREAMER_CLEAR_RET_CODE, streamer_mmio + LAPDINC);
  628. writew(readw(streamer_mmio + LAPWWO) + 8, streamer_mmio + LAPA);
  629. #if STREAMER_NETWORK_MONITOR
  630. /* If Network Monitor, instruct card to copy MAC frames through the ARB */
  631. writew(htons(OPEN_ADAPTER_ENABLE_FDX | OPEN_ADAPTER_PASS_ADC_MAC | OPEN_ADAPTER_PASS_ATT_MAC | OPEN_ADAPTER_PASS_BEACON), streamer_mmio + LAPDINC); /* offset 8 word contains open options */
  632. #else
  633. writew(htons(OPEN_ADAPTER_ENABLE_FDX), streamer_mmio + LAPDINC); /* Offset 8 word contains Open.Options */
  634. #endif
  636. if (streamer_priv->streamer_laa[0]) {
  637. writew(readw(streamer_mmio + LAPWWO) + 12, streamer_mmio + LAPA);
  638. writew(htons((streamer_priv->streamer_laa[0] << 8) | 
  639.      streamer_priv->streamer_laa[1]),streamer_mmio+LAPDINC);
  640. writew(htons((streamer_priv->streamer_laa[2] << 8) | 
  641.      streamer_priv->streamer_laa[3]),streamer_mmio+LAPDINC);
  642. writew(htons((streamer_priv->streamer_laa[4] << 8) | 
  643.      streamer_priv->streamer_laa[5]),streamer_mmio+LAPDINC);
  644. memcpy(dev->dev_addr, streamer_priv->streamer_laa, dev->addr_len);
  645. }
  647. /* save off srb open offset */
  648. srb_open = readw(streamer_mmio + LAPWWO);
  649. #if STREAMER_DEBUG
  650. writew(readw(streamer_mmio + LAPWWO),
  651.        streamer_mmio + LAPA);
  652. printk("srb open request: n");
  653. for (i = 0; i < 16; i++) {
  654. printk("%x:", ntohs(readw(streamer_mmio + LAPDINC)));
  655. }
  656. printk("n");
  657. #endif
  658. spin_lock_irqsave(&streamer_priv->streamer_lock, flags);
  659. streamer_priv->srb_queued = 1;
  661. /* signal solo that SRB command has been issued */
  662. writew(LISR_SRB_CMD, streamer_mmio + LISR_SUM);
  663. spin_unlock_irqrestore(&streamer_priv->streamer_lock, flags);
  665. while (streamer_priv->srb_queued) {
  666. interruptible_sleep_on_timeout(&streamer_priv->srb_wait, 5 * HZ);
  667. if (signal_pending(current)) {
  668. printk(KERN_WARNING "%s: SRB timed out.n", dev->name);
  669. printk(KERN_WARNING "SISR=%x MISR=%x, LISR=%xn",
  670.        readw(streamer_mmio + SISR),
  671.        readw(streamer_mmio + MISR_RUM),
  672.        readw(streamer_mmio + LISR));
  673. streamer_priv->srb_queued = 0;
  674. break;
  675. }
  676. }
  678. #if STREAMER_DEBUG
  679. printk("SISR_MASK: %xn", readw(streamer_mmio + SISR_MASK));
  680. printk("srb open response:n");
  681. writew(srb_open, streamer_mmio + LAPA);
  682. for (i = 0; i < 10; i++) {
  683. printk("%x:",
  684.        ntohs(readw(streamer_mmio + LAPDINC)));
  685. }
  686. #endif
  688. /* If we get the same return response as we set, the interrupt wasn't raised and the open
  689.  * timed out.
  690.  */
  691. writew(srb_open + 2, streamer_mmio + LAPA);
  692. srb_word = ntohs(readw(streamer_mmio + LAPD)) >> 8;
  693. if (srb_word == STREAMER_CLEAR_RET_CODE) {
  694. printk(KERN_WARNING "%s: Adapter Open time out or error.n",
  695.        dev->name);
  696. return -EIO;
  697. }
  699. if (srb_word != 0) {
  700. if (srb_word == 0x07) {
  701. if (!streamer_priv->streamer_ring_speed && open_finished) { /* Autosense , first time around */
  702. printk(KERN_WARNING "%s: Retrying at different ring speed n",
  703.        dev->name);
  704. open_finished = 0;
  705. } else {
  706. __u16 error_code;
  708. writew(srb_open + 6, streamer_mmio + LAPA);
  709. error_code = ntohs(readw(streamer_mmio + LAPD));
  710. strcpy(open_error, open_maj_error[(error_code & 0xf0) >> 4]);
  711. strcat(open_error, " - ");
  712. strcat(open_error, open_min_error[(error_code & 0x0f)]);
  714. if (!streamer_priv->streamer_ring_speed
  715.     && ((error_code & 0x0f) == 0x0d)) 
  716. {
  717. printk(KERN_WARNING "%s: Tried to autosense ring speed with no monitors presentn", dev->name);
  718. printk(KERN_WARNING "%s: Please try again with a specified ring speed n", dev->name);
  719. free_irq(dev->irq, dev);
  720. return -EIO;
  721. }
  723. printk(KERN_WARNING "%s: %sn",
  724.        dev->name, open_error);
  725. free_irq(dev->irq, dev);
  726. return -EIO;
  728. } /* if autosense && open_finished */
  729. } else {
  730. printk(KERN_WARNING "%s: Bad OPEN response: %xn",
  731.        dev->name, srb_word);
  732. free_irq(dev->irq, dev);
  733. return -EIO;
  734. }
  735. } else
  736. open_finished = 1;
  737. } while (!(open_finished)); /* Will only loop if ring speed mismatch re-open attempted && autosense is on */
  739. writew(srb_open + 18, streamer_mmio + LAPA);
  740. srb_word=ntohs(readw(streamer_mmio+LAPD)) >> 8;
  741. if (srb_word & (1 << 3))
  742. if (streamer_priv->streamer_message_level)
  743. printk(KERN_INFO "%s: Opened in FDX Moden", dev->name);
  745. if (srb_word & 1)
  746. streamer_priv->streamer_ring_speed = 16;
  747. else
  748. streamer_priv->streamer_ring_speed = 4;
  750. if (streamer_priv->streamer_message_level)
  751. printk(KERN_INFO "%s: Opened in %d Mbps moden", 
  752. dev->name,
  753. streamer_priv->streamer_ring_speed);
  755. writew(srb_open + 8, streamer_mmio + LAPA);
  756. streamer_priv->asb = ntohs(readw(streamer_mmio + LAPDINC));
  757. streamer_priv->srb = ntohs(readw(streamer_mmio + LAPDINC));
  758. streamer_priv->arb = ntohs(readw(streamer_mmio + LAPDINC));
  759. readw(streamer_mmio + LAPDINC); /* offset 14 word is rsvd */
  760. streamer_priv->trb = ntohs(readw(streamer_mmio + LAPDINC));
  762. streamer_priv->streamer_receive_options = 0x00;
  763. streamer_priv->streamer_copy_all_options = 0;
  765. /* setup rx ring */
  766. /* enable rx channel */
  767. writew(~BMCTL_RX_DIS, streamer_mmio + BMCTL_RUM);
  769. /* setup rx descriptors */
  770. streamer_priv->streamer_rx_ring=
  771.     kmalloc( sizeof(struct streamer_rx_desc)*
  772.      STREAMER_RX_RING_SIZE,GFP_KERNEL);
  773. if (!streamer_priv->streamer_rx_ring) {
  774.     printk(KERN_WARNING "%s ALLOC of streamer rx ring FAILED!!n",dev->name);
  775.     return -EIO;
  776. }
  778. for (i = 0; i < STREAMER_RX_RING_SIZE; i++) {
  779. struct sk_buff *skb;
  781. skb = dev_alloc_skb(streamer_priv->pkt_buf_sz);
  782. if (skb == NULL)
  783. break;
  785. skb->dev = dev;
  787. streamer_priv->streamer_rx_ring[i].forward = 
  788. cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_rx_ring[i + 1],
  789. sizeof(struct streamer_rx_desc), PCI_DMA_FROMDEVICE));
  790. streamer_priv->streamer_rx_ring[i].status = 0;
  791. streamer_priv->streamer_rx_ring[i].buffer = 
  792. cpu_to_le32(pci_map_single(streamer_priv->pci_dev, skb->data,
  793.       streamer_priv->pkt_buf_sz, PCI_DMA_FROMDEVICE));
  794. streamer_priv->streamer_rx_ring[i].framelen_buflen = streamer_priv->pkt_buf_sz;
  795. streamer_priv->rx_ring_skb[i] = skb;
  796. }
  797. streamer_priv->streamer_rx_ring[STREAMER_RX_RING_SIZE - 1].forward =
  798. cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_rx_ring[0],
  799. sizeof(struct streamer_rx_desc), PCI_DMA_FROMDEVICE));
  801. if (i == 0) {
  802. printk(KERN_WARNING "%s: Not enough memory to allocate rx buffers. Adapter disabledn", dev->name);
  803. free_irq(dev->irq, dev);
  804. return -EIO;
  805. }
  807. streamer_priv->rx_ring_last_received = STREAMER_RX_RING_SIZE - 1; /* last processed rx status */
  809. writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_rx_ring[0],
  810. sizeof(struct streamer_rx_desc), PCI_DMA_TODEVICE)), 
  811. streamer_mmio + RXBDA);
  812. writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_rx_ring[STREAMER_RX_RING_SIZE - 1],
  813. sizeof(struct streamer_rx_desc), PCI_DMA_TODEVICE)), 
  814. streamer_mmio + RXLBDA);
  816. /* set bus master interrupt event mask */
  817. writew(MISR_RX_NOBUF | MISR_RX_EOF, streamer_mmio + MISR_MASK);
  820. /* setup tx ring */
  821. streamer_priv->streamer_tx_ring=kmalloc(sizeof(struct streamer_tx_desc)*
  822. STREAMER_TX_RING_SIZE,GFP_KERNEL);
  823. if (!streamer_priv->streamer_tx_ring) {
  824.     printk(KERN_WARNING "%s ALLOC of streamer_tx_ring FAILEDn",dev->name);
  825.     return -EIO;
  826. }
  828. writew(~BMCTL_TX2_DIS, streamer_mmio + BMCTL_RUM); /* Enables TX channel 2 */
  829. for (i = 0; i < STREAMER_TX_RING_SIZE; i++) {
  830. streamer_priv->streamer_tx_ring[i].forward = cpu_to_le32(pci_map_single(streamer_priv->pci_dev, 
  831. &streamer_priv->streamer_tx_ring[i + 1],
  832. sizeof(struct streamer_tx_desc),
  833. PCI_DMA_TODEVICE));
  834. streamer_priv->streamer_tx_ring[i].status = 0;
  835. streamer_priv->streamer_tx_ring[i].bufcnt_framelen = 0;
  836. streamer_priv->streamer_tx_ring[i].buffer = 0;
  837. streamer_priv->streamer_tx_ring[i].buflen = 0;
  838. streamer_priv->streamer_tx_ring[i].rsvd1 = 0;
  839. streamer_priv->streamer_tx_ring[i].rsvd2 = 0;
  840. streamer_priv->streamer_tx_ring[i].rsvd3 = 0;
  841. }
  842. streamer_priv->streamer_tx_ring[STREAMER_TX_RING_SIZE - 1].forward =
  843. cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_tx_ring[0],
  844. sizeof(struct streamer_tx_desc), PCI_DMA_TODEVICE));
  846. streamer_priv->free_tx_ring_entries = STREAMER_TX_RING_SIZE;
  847. streamer_priv->tx_ring_free = 0; /* next entry in tx ring to use */
  848. streamer_priv->tx_ring_last_status = STREAMER_TX_RING_SIZE - 1;
  850. /* set Busmaster interrupt event mask (handle receives on interrupt only */
  851. writew(MISR_TX2_EOF | MISR_RX_NOBUF | MISR_RX_EOF, streamer_mmio + MISR_MASK);
  852. /* set system event interrupt mask */
  853. writew(SISR_ADAPTER_CHECK | SISR_ARB_CMD | SISR_TRB_REPLY | SISR_ASB_FREE, streamer_mmio + SISR_MASK_SUM);
  855. #if STREAMER_DEBUG
  856. printk("BMCTL: %xn", readw(streamer_mmio + BMCTL_SUM));
  857. printk("SISR MASK: %xn", readw(streamer_mmio + SISR_MASK));
  858. #endif
  860. #if STREAMER_NETWORK_MONITOR
  862. writew(streamer_priv->streamer_addr_table_addr, streamer_mmio + LAPA);
  863. printk("%s: Node Address: %04x:%04x:%04xn", dev->name,
  864. ntohs(readw(streamer_mmio + LAPDINC)),
  865. ntohs(readw(streamer_mmio + LAPDINC)),
  866. ntohs(readw(streamer_mmio + LAPDINC)));
  867. readw(streamer_mmio + LAPDINC);
  868. readw(streamer_mmio + LAPDINC);
  869. printk("%s: Functional Address: %04x:%04xn", dev->name,
  870. ntohs(readw(streamer_mmio + LAPDINC)),
  871. ntohs(readw(streamer_mmio + LAPDINC)));
  873. writew(streamer_priv->streamer_parms_addr + 4,
  874. streamer_mmio + LAPA);
  875. printk("%s: NAUN Address: %04x:%04x:%04xn", dev->name,
  876. ntohs(readw(streamer_mmio + LAPDINC)),
  877. ntohs(readw(streamer_mmio + LAPDINC)),
  878. ntohs(readw(streamer_mmio + LAPDINC)));
  879. #endif
  881. netif_start_queue(dev);
  882. return 0;
  883. }
  885. /*
  886.  * When we enter the rx routine we do not know how many frames have been 
  887.  * queued on the rx channel.  Therefore we start at the next rx status
  888.  * position and travel around the receive ring until we have completed
  889.  * all the frames.
  890.  *
  891.  * This means that we may process the frame before we receive the end
  892.  * of frame interrupt. This is why we always test the status instead
  893.  * of blindly processing the next frame.
  894.  *
  895.  */
  896. static void streamer_rx(struct net_device *dev)
  897. {
  898. struct streamer_private *streamer_priv =
  899.     (struct streamer_private *) dev->priv;
  900. __u8 *streamer_mmio = streamer_priv->streamer_mmio;
  901. struct streamer_rx_desc *rx_desc;
  902. int rx_ring_last_received, length, frame_length, buffer_cnt = 0;
  903. struct sk_buff *skb, *skb2;
  905. /* setup the next rx descriptor to be received */
  906. rx_desc = &streamer_priv->streamer_rx_ring[(streamer_priv->rx_ring_last_received + 1) & (STREAMER_RX_RING_SIZE - 1)];
  907. rx_ring_last_received = streamer_priv->rx_ring_last_received;
  909. while (rx_desc->status & 0x01000000) { /* While processed descriptors are available */
  910. if (rx_ring_last_received != streamer_priv->rx_ring_last_received) 
  911. {
  912. printk(KERN_WARNING "RX Error 1 rx_ring_last_received not the same %x %xn",
  913. rx_ring_last_received, streamer_priv->rx_ring_last_received);
  914. }
  915. streamer_priv->rx_ring_last_received = (streamer_priv->rx_ring_last_received + 1) & (STREAMER_RX_RING_SIZE - 1);
  916. rx_ring_last_received = streamer_priv->rx_ring_last_received;
  918. length = rx_desc->framelen_buflen & 0xffff; /* buffer length */
  919. frame_length = (rx_desc->framelen_buflen >> 16) & 0xffff;
  921. if (rx_desc->status & 0x7E830000) { /* errors */
  922. if (streamer_priv->streamer_message_level) {
  923. printk(KERN_WARNING "%s: Rx Error %x n",
  924.        dev->name, rx_desc->status);
  925. }
  926. } else { /* received without errors */
  927. if (rx_desc->status & 0x80000000) { /* frame complete */
  928. buffer_cnt = 1;
  929. skb = dev_alloc_skb(streamer_priv->pkt_buf_sz);
  930. } else {
  931. skb = dev_alloc_skb(frame_length);
  932. }
  934. if (skb == NULL) 
  935. {
  936. printk(KERN_WARNING "%s: Not enough memory to copy packet to upper layers. n", dev->name);
  937. streamer_priv->streamer_stats.rx_dropped++;
  938. } else { /* we allocated an skb OK */
  939. skb->dev = dev;
  941. if (buffer_cnt == 1) {
  942. /* release the DMA mapping */
  943. pci_unmap_single(streamer_priv->pci_dev, 
  944. le32_to_cpu(streamer_priv->streamer_rx_ring[rx_ring_last_received].buffer),
  945. streamer_priv->pkt_buf_sz, 
  946. PCI_DMA_FROMDEVICE);
  947. skb2 = streamer_priv->rx_ring_skb[rx_ring_last_received];
  948. #if STREAMER_DEBUG_PACKETS
  949. {
  950. int i;
  951. printk("streamer_rx packet print: skb->data2 %p  skb->head %pn", skb2->data, skb2->head);
  952. for (i = 0; i < frame_length; i++) 
  953. {
  954. printk("%x:", skb2->data[i]);
  955. if (((i + 1) % 16) == 0)
  956. printk("n");
  957. }
  958. printk("n");
  959. }
  960. #endif
  961. skb_put(skb2, length);
  962. skb2->protocol = tr_type_trans(skb2, dev);
  963. /* recycle this descriptor */
  964. streamer_priv->streamer_rx_ring[rx_ring_last_received].status = 0;
  965. streamer_priv->streamer_rx_ring[rx_ring_last_received].framelen_buflen = streamer_priv->pkt_buf_sz;
  966. streamer_priv->streamer_rx_ring[rx_ring_last_received].buffer = 
  967. cpu_to_le32(pci_map_single(streamer_priv->pci_dev, skb->data, streamer_priv->pkt_buf_sz,
  968. PCI_DMA_FROMDEVICE));
  969. streamer_priv->rx_ring_skb[rx_ring_last_received] = skb;
  970. /* place recycled descriptor back on the adapter */
  971. writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev, 
  972. &streamer_priv->streamer_rx_ring[rx_ring_last_received],
  973. sizeof(struct streamer_rx_desc), PCI_DMA_FROMDEVICE)),
  974. streamer_mmio + RXLBDA);
  975. /* pass the received skb up to the protocol */
  976. netif_rx(skb2);
  977. } else {
  978. do { /* Walk the buffers */
  979. pci_unmap_single(streamer_priv->pci_dev, le32_to_cpu(rx_desc->buffer), length, PCI_DMA_FROMDEVICE), 
  980. memcpy(skb_put(skb, length), (void *)rx_desc->buffer, length); /* copy this fragment */
  981. streamer_priv->streamer_rx_ring[rx_ring_last_received].status = 0;
  982. streamer_priv->streamer_rx_ring[rx_ring_last_received].framelen_buflen = streamer_priv->pkt_buf_sz;
  984. /* give descriptor back to the adapter */
  985. writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev, 
  986. &streamer_priv->streamer_rx_ring[rx_ring_last_received],
  987. length, PCI_DMA_FROMDEVICE)), 
  988. streamer_mmio + RXLBDA);
  990. if (rx_desc->status & 0x80000000)
  991. break; /* this descriptor completes the frame */
  993. /* else get the next pending descriptor */
  994. if (rx_ring_last_received!= streamer_priv->rx_ring_last_received)
  995. {
  996. printk("RX Error rx_ring_last_received not the same %x %xn",
  997. rx_ring_last_received,
  998. streamer_priv->rx_ring_last_received);
  999. }
  1000. rx_desc = &streamer_priv->streamer_rx_ring[(streamer_priv->rx_ring_last_received+1) & (STREAMER_RX_RING_SIZE-1)];
  1002. length = rx_desc->framelen_buflen & 0xffff; /* buffer length */
  1003. streamer_priv->rx_ring_last_received = (streamer_priv->rx_ring_last_received+1) & (STREAMER_RX_RING_SIZE - 1);
  1004. rx_ring_last_received = streamer_priv->rx_ring_last_received;
  1005. } while (1);
  1007. skb->protocol = tr_type_trans(skb, dev);
  1008. /* send up to the protocol */
  1009. netif_rx(skb);
  1010. }
  1011. dev->last_rx = jiffies;
  1012. streamer_priv->streamer_stats.rx_packets++;
  1013. streamer_priv->streamer_stats.rx_bytes += length;
  1014. } /* if skb == null */
  1015. } /* end received without errors */
  1017. /* try the next one */
  1018. rx_desc = &streamer_priv->streamer_rx_ring[(rx_ring_last_received + 1) & (STREAMER_RX_RING_SIZE - 1)];
  1019. } /* end for all completed rx descriptors */
  1020. }
  1022. static void streamer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
  1023. {
  1024. struct net_device *dev = (struct net_device *) dev_id;
  1025. struct streamer_private *streamer_priv =
  1026.     (struct streamer_private *) dev->priv;
  1027. __u8 *streamer_mmio = streamer_priv->streamer_mmio;
  1028. __u16 sisr;
  1029. __u16 misr;
  1030. u8 max_intr = MAX_INTR;
  1032. spin_lock(&streamer_priv->streamer_lock);
  1033. sisr = readw(streamer_mmio + SISR);
  1035. while((sisr & (SISR_MI | SISR_SRB_REPLY | SISR_ADAPTER_CHECK | SISR_ASB_FREE | 
  1036.        SISR_ARB_CMD | SISR_TRB_REPLY | SISR_PAR_ERR | SISR_SERR_ERR))
  1037.                && (max_intr > 0)) {
  1039. if(sisr & SISR_PAR_ERR) {
  1040. writew(~SISR_PAR_ERR, streamer_mmio + SISR_RUM);
  1041. (void)readw(streamer_mmio + SISR_RUM);
  1042. }
  1044. else if(sisr & SISR_SERR_ERR) {
  1045. writew(~SISR_SERR_ERR, streamer_mmio + SISR_RUM);
  1046. (void)readw(streamer_mmio + SISR_RUM);
  1047. }
  1049. else if(sisr & SISR_MI) {
  1050. misr = readw(streamer_mmio + MISR_RUM);
  1052. if (misr & MISR_TX2_EOF) {
  1053. while(streamer_priv->streamer_tx_ring[(streamer_priv->tx_ring_last_status + 1) & (STREAMER_TX_RING_SIZE - 1)].status) {
  1054. streamer_priv->tx_ring_last_status = (streamer_priv->tx_ring_last_status + 1) & (STREAMER_TX_RING_SIZE - 1);
  1055. streamer_priv->free_tx_ring_entries++;
  1056. streamer_priv->streamer_stats.tx_bytes += streamer_priv->tx_ring_skb[streamer_priv->tx_ring_last_status]->len;
  1057. streamer_priv->streamer_stats.tx_packets++;
  1058. dev_kfree_skb_irq(streamer_priv->tx_ring_skb[streamer_priv->tx_ring_last_status]);
  1059. streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_last_status].buffer = 0xdeadbeef;
  1060. streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_last_status].status = 0;
  1061. streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_last_status].bufcnt_framelen = 0;
  1062. streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_last_status].buflen = 0;
  1063. streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_last_status].rsvd1 = 0;
  1064. streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_last_status].rsvd2 = 0;
  1065. streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_last_status].rsvd3 = 0;
  1066. }
  1067. netif_wake_queue(dev);
  1068. }
  1070. if (misr & MISR_RX_EOF) {
  1071. streamer_rx(dev);
  1072. }
  1073. /* MISR_RX_EOF */
  1075. if (misr & MISR_RX_NOBUF) {
  1076. /* According to the documentation, we don't have to do anything,  
  1077.                                  * but trapping it keeps it out of /var/log/messages.  
  1078.                                  */
  1079. } /* SISR_RX_NOBUF */
  1081. writew(~misr, streamer_mmio + MISR_RUM);
  1082. (void)readw(streamer_mmio + MISR_RUM);
  1083. }
  1085. else if (sisr & SISR_SRB_REPLY) {
  1086. if (streamer_priv->srb_queued == 1) {
  1087. wake_up_interruptible(&streamer_priv->srb_wait);
  1088. } else if (streamer_priv->srb_queued == 2) {
  1089. streamer_srb_bh(dev);
  1090. }
  1091. streamer_priv->srb_queued = 0;
  1093. writew(~SISR_SRB_REPLY, streamer_mmio + SISR_RUM);
  1094. (void)readw(streamer_mmio + SISR_RUM);
  1095. }
  1097. else if (sisr & SISR_ADAPTER_CHECK) {
  1098. printk(KERN_WARNING "%s: Adapter Check Interrupt Raised, 8 bytes of information follow:n", dev->name);
  1099. writel(readl(streamer_mmio + LAPWWO), streamer_mmio + LAPA);
  1100. printk(KERN_WARNING "%s: Words %x:%x:%x:%x:n",
  1101.        dev->name, readw(streamer_mmio + LAPDINC),
  1102.        ntohs(readw(streamer_mmio + LAPDINC)),
  1103.        ntohs(readw(streamer_mmio + LAPDINC)),
  1104.        ntohs(readw(streamer_mmio + LAPDINC)));
  1105. free_irq(dev->irq, dev);
  1106. }
  1108. /* SISR_ADAPTER_CHECK */
  1109. else if (sisr & SISR_ASB_FREE) {
  1110. /* Wake up anything that is waiting for the asb response */
  1111. if (streamer_priv->asb_queued) {
  1112. streamer_asb_bh(dev);
  1113. }
  1114. writew(~SISR_ASB_FREE, streamer_mmio + SISR_RUM);
  1115. (void)readw(streamer_mmio + SISR_RUM);
  1116. }
  1117. /* SISR_ASB_FREE */
  1118. else if (sisr & SISR_ARB_CMD) {
  1119. streamer_arb_cmd(dev);
  1120. writew(~SISR_ARB_CMD, streamer_mmio + SISR_RUM);
  1121. (void)readw(streamer_mmio + SISR_RUM);
  1122. }
  1123. /* SISR_ARB_CMD */
  1124. else if (sisr & SISR_TRB_REPLY) {
  1125. /* Wake up anything that is waiting for the trb response */
  1126. if (streamer_priv->trb_queued) {
  1127. wake_up_interruptible(&streamer_priv->
  1128.       trb_wait);
  1129. }
  1130. streamer_priv->trb_queued = 0;
  1131. writew(~SISR_TRB_REPLY, streamer_mmio + SISR_RUM);
  1132. (void)readw(streamer_mmio + SISR_RUM);
  1133. }
  1134. /* SISR_TRB_REPLY */
  1136. sisr = readw(streamer_mmio + SISR);
  1137. max_intr--;
  1138. } /* while() */
  1140. spin_unlock(&streamer_priv->streamer_lock) ; 
  1141. }
  1143. static int streamer_xmit(struct sk_buff *skb, struct net_device *dev)
  1144. {
  1145. struct streamer_private *streamer_priv =
  1146.     (struct streamer_private *) dev->priv;
  1147. __u8 *streamer_mmio = streamer_priv->streamer_mmio;
  1148. unsigned long flags ;
  1150. spin_lock_irqsave(&streamer_priv->streamer_lock, flags);
  1152. if (streamer_priv->free_tx_ring_entries) {
  1153. streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].status = 0;
  1154. streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].bufcnt_framelen = 0x00020000 | skb->len;
  1155. streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].buffer = 
  1156. cpu_to_le32(pci_map_single(streamer_priv->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE));
  1157. streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].rsvd1 = skb->len;
  1158. streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].rsvd2 = 0;
  1159. streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].rsvd3 = 0;
  1160. streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].buflen = skb->len;
  1162. streamer_priv->tx_ring_skb[streamer_priv->tx_ring_free] = skb;
  1163. streamer_priv->free_tx_ring_entries--;
  1164. #if STREAMER_DEBUG_PACKETS
  1165. {
  1166. int i;
  1167. printk("streamer_xmit packet print:n");
  1168. for (i = 0; i < skb->len; i++) {
  1169. printk("%x:", skb->data[i]);
  1170. if (((i + 1) % 16) == 0)
  1171. printk("n");
  1172. }
  1173. printk("n");
  1174. }
  1175. #endif
  1177. writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev, 
  1178. &streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free],
  1179. sizeof(struct streamer_tx_desc), PCI_DMA_TODEVICE)),
  1180. streamer_mmio + TX2LFDA);
  1181. (void)readl(streamer_mmio + TX2LFDA);
  1183. streamer_priv->tx_ring_free = (streamer_priv->tx_ring_free + 1) & (STREAMER_TX_RING_SIZE - 1);
  1184. spin_unlock_irqrestore(&streamer_priv->streamer_lock,flags);
  1185. return 0;
  1186. } else {
  1187.         netif_stop_queue(dev);
  1188.         spin_unlock_irqrestore(&streamer_priv->streamer_lock,flags);
  1189. return 1;
  1190. }
  1191. }
  1194. static int streamer_close(struct net_device *dev)
  1195. {
  1196. struct streamer_private *streamer_priv =
  1197.     (struct streamer_private *) dev->priv;
  1198. __u8 *streamer_mmio = streamer_priv->streamer_mmio;
  1199. unsigned long flags;
  1200. int i;
  1202. netif_stop_queue(dev);
  1203. writew(streamer_priv->srb, streamer_mmio + LAPA);
  1204. writew(htons(SRB_CLOSE_ADAPTER << 8),streamer_mmio+LAPDINC);
  1205. writew(htons(STREAMER_CLEAR_RET_CODE << 8), streamer_mmio+LAPDINC);
  1207. spin_lock_irqsave(&streamer_priv->streamer_lock, flags);
  1209. streamer_priv->srb_queued = 1;
  1210. writew(LISR_SRB_CMD, streamer_mmio + LISR_SUM);
  1212. spin_unlock_irqrestore(&streamer_priv->streamer_lock, flags);
  1214. while (streamer_priv->srb_queued) 
  1215. {
  1216. interruptible_sleep_on_timeout(&streamer_priv->srb_wait,
  1217.        jiffies + 60 * HZ);
  1218. if (signal_pending(current)) 
  1219. {
  1220. printk(KERN_WARNING "%s: SRB timed out.n", dev->name);
  1221. printk(KERN_WARNING "SISR=%x MISR=%x LISR=%xn",
  1222.        readw(streamer_mmio + SISR),
  1223.        readw(streamer_mmio + MISR_RUM),
  1224.        readw(streamer_mmio + LISR));
  1225. streamer_priv->srb_queued = 0;
  1226. break;
  1227. }
  1228. }
  1230. streamer_priv->rx_ring_last_received = (streamer_priv->rx_ring_last_received + 1) & (STREAMER_RX_RING_SIZE - 1);
  1232. for (i = 0; i < STREAMER_RX_RING_SIZE; i++) {
  1233.         if (streamer_priv->rx_ring_skb[streamer_priv->rx_ring_last_received]) {
  1234.         dev_kfree_skb(streamer_priv->rx_ring_skb[streamer_priv->rx_ring_last_received]);
  1235. } 
  1236. streamer_priv->rx_ring_last_received = (streamer_priv->rx_ring_last_received + 1) & (STREAMER_RX_RING_SIZE - 1);
  1237. }
  1239. /* reset tx/rx fifo's and busmaster logic */
  1241. /* TBD. Add graceful way to reset the LLC channel without doing a soft reset. 
  1242.    writel(readl(streamer_mmio+BCTL)|(3<<13),streamer_mmio+BCTL);
  1243.    udelay(1);
  1244.    writel(readl(streamer_mmio+BCTL)&~(3<<13),streamer_mmio+BCTL);
  1245.  */
  1247. #if STREAMER_DEBUG
  1248. writew(streamer_priv->srb, streamer_mmio + LAPA);
  1249. printk("srb): ");
  1250. for (i = 0; i < 2; i++) {
  1251. printk("%x ", ntohs(readw(streamer_mmio + LAPDINC)));
  1252. }
  1253. printk("n");
  1254. #endif
  1255. free_irq(dev->irq, dev);
  1256. return 0;
  1257. }
  1259. static void streamer_set_rx_mode(struct net_device *dev)
  1260. {
  1261. struct streamer_private *streamer_priv =
  1262.     (struct streamer_private *) dev->priv;
  1263. __u8 *streamer_mmio = streamer_priv->streamer_mmio;
  1264. __u8 options = 0;
  1265. struct dev_mc_list *dmi;
  1266. unsigned char dev_mc_address[5];
  1267. int i;
  1269. writel(streamer_priv->srb, streamer_mmio + LAPA);
  1270. options = streamer_priv->streamer_copy_all_options;
  1272. if (dev->flags & IFF_PROMISC)
  1273. options |= (3 << 5); /* All LLC and MAC frames, all through the main rx channel */
  1274. else
  1275. options &= ~(3 << 5);
  1277. /* Only issue the srb if there is a change in options */
  1279. if ((options ^ streamer_priv->streamer_copy_all_options)) 
  1280. {
  1281. /* Now to issue the srb command to alter the copy.all.options */
  1282. writew(htons(SRB_MODIFY_RECEIVE_OPTIONS << 8), streamer_mmio+LAPDINC);
  1283. writew(htons(STREAMER_CLEAR_RET_CODE << 8), streamer_mmio+LAPDINC);
  1284. writew(htons((streamer_priv->streamer_receive_options << 8) | options),streamer_mmio+LAPDINC);
  1285. writew(htons(0x4a41),streamer_mmio+LAPDINC);
  1286. writew(htons(0x4d45),streamer_mmio+LAPDINC);
  1287. writew(htons(0x5320),streamer_mmio+LAPDINC);
  1288. writew(0x2020, streamer_mmio + LAPDINC);
  1290. streamer_priv->srb_queued = 2; /* Can't sleep, use srb_bh */
  1292. writel(LISR_SRB_CMD, streamer_mmio + LISR_SUM);
  1294. streamer_priv->streamer_copy_all_options = options;
  1295. return;
  1296. }
  1298. /* Set the functional addresses we need for multicast */
  1299. writel(streamer_priv->srb,streamer_mmio+LAPA);
  1300. dev_mc_address[0] = dev_mc_address[1] = dev_mc_address[2] = dev_mc_address[3] = 0 ; 
  1301.   
  1302. for (i=0,dmi=dev->mc_list;i < dev->mc_count; i++,dmi = dmi->next) 
  1303. { 
  1304.             dev_mc_address[0] |= dmi->dmi_addr[2] ; 
  1305. dev_mc_address[1] |= dmi->dmi_addr[3] ; 
  1306. dev_mc_address[2] |= dmi->dmi_addr[4] ; 
  1307. dev_mc_address[3] |= dmi->dmi_addr[5] ; 
  1308. }
  1309.   
  1310. writew(htons(SRB_SET_FUNC_ADDRESS << 8),streamer_mmio+LAPDINC);
  1311. writew(htons(STREAMER_CLEAR_RET_CODE << 8), streamer_mmio+LAPDINC);
  1312. writew(0,streamer_mmio+LAPDINC);
  1313. writew(htons( (dev_mc_address[0] << 8) | dev_mc_address[1]),streamer_mmio+LAPDINC);
  1314. writew(htons( (dev_mc_address[2] << 8) | dev_mc_address[3]),streamer_mmio+LAPDINC);
  1315. streamer_priv->srb_queued = 2 ; 
  1316. writel(LISR_SRB_CMD,streamer_mmio+LISR_SUM);
  1317. }
  1319. static void streamer_srb_bh(struct net_device *dev)
  1320. {
  1321. struct streamer_private *streamer_priv = (struct streamer_private *) dev->priv;
  1322. __u8 *streamer_mmio = streamer_priv->streamer_mmio;
  1323. __u16 srb_word;
  1325. writew(streamer_priv->srb, streamer_mmio + LAPA);
  1326. srb_word=ntohs(readw(streamer_mmio+LAPDINC)) >> 8;
  1328. switch (srb_word) {
  1330. /* SRB_MODIFY_RECEIVE_OPTIONS i.e. set_multicast_list options (promiscuous) 
  1331.  * At some point we should do something if we get an error, such as
  1332.  * resetting the IFF_PROMISC flag in dev
  1333.  */
  1335. case SRB_MODIFY_RECEIVE_OPTIONS:
  1336.         srb_word=ntohs(readw(streamer_mmio+LAPDINC)) >> 8;
  1338. switch (srb_word) {
  1339. case 0x01:
  1340. printk(KERN_WARNING "%s: Unrecognized srb commandn", dev->name);
  1341. break;
  1342. case 0x04:
  1343. printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!n", dev->name);
  1344. break;
  1345. default:
  1346. if (streamer_priv->streamer_message_level)
  1347. printk(KERN_WARNING "%s: Receive Options Modified to %x,%xn",
  1348.        dev->name,
  1349.        streamer_priv->streamer_copy_all_options,
  1350.        streamer_priv->streamer_receive_options);
  1351. break;
  1352. } /* switch srb[2] */
  1353. break;
  1356. /* SRB_SET_GROUP_ADDRESS - Multicast group setting 
  1357.  */
  1358. case SRB_SET_GROUP_ADDRESS:
  1359.         srb_word=ntohs(readw(streamer_mmio+LAPDINC)) >> 8;
  1360. switch (srb_word) {
  1361. case 0x00:
  1362.         break;
  1363. case 0x01:
  1364. printk(KERN_WARNING "%s: Unrecognized srb command n",dev->name);
  1365. break;
  1366. case 0x04:
  1367. printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!n", dev->name);
  1368. break;
  1369. case 0x3c:
  1370. printk(KERN_WARNING "%s: Group/Functional address indicator bits not set correctlyn", dev->name);
  1371. break;
  1372. case 0x3e: /* If we ever implement individual multicast addresses, will need to deal with this */
  1373. printk(KERN_WARNING "%s: Group address registers fulln", dev->name);
  1374. break;
  1375. case 0x55:
  1376. printk(KERN_INFO "%s: Group Address already set.n", dev->name);
  1377. break;
  1378. default:
  1379. break;
  1380. } /* switch srb[2] */
  1381. break;
  1384. /* SRB_RESET_GROUP_ADDRESS - Remove a multicast address from group list
  1385.  */
  1386. case SRB_RESET_GROUP_ADDRESS:
  1387.         srb_word=ntohs(readw(streamer_mmio+LAPDINC)) >> 8;
  1388. switch (srb_word) {
  1389. case 0x00:
  1390.         break;
  1391. case 0x01:
  1392. printk(KERN_WARNING "%s: Unrecognized srb command n", dev->name);
  1393. break;
  1394. case 0x04:
  1395. printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!n", dev->name);
  1396. break;
  1397. case 0x39: /* Must deal with this if individual multicast addresses used */
  1398. printk(KERN_INFO "%s: Group address not found n", dev->name);
  1399. break;
  1400. default:
  1401. break;
  1402. } /* switch srb[2] */
  1403. break;
  1406. /* SRB_SET_FUNC_ADDRESS - Called by the set_rx_mode 
  1407.  */
  1409. case SRB_SET_FUNC_ADDRESS:
  1410.         srb_word=ntohs(readw(streamer_mmio+LAPDINC)) >> 8;
  1411. switch (srb_word) {
  1412. case 0x00:
  1413. if (streamer_priv->streamer_message_level)
  1414. printk(KERN_INFO "%s: Functional Address Mask Set n", dev->name);
  1415. break;
  1416. case 0x01:
  1417. printk(KERN_WARNING "%s: Unrecognized srb command n", dev->name);
  1418. break;
  1419. case 0x04:
  1420. printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!n", dev->name);
  1421. break;
  1422. default:
  1423. break;
  1424. } /* switch srb[2] */
  1425. break;
  1427. /* SRB_READ_LOG - Read and reset the adapter error counters
  1428.  */
  1430. case SRB_READ_LOG:
  1431.         srb_word=ntohs(readw(streamer_mmio+LAPDINC)) >> 8;
  1432. switch (srb_word) {
  1433. case 0x00:
  1434. {
  1435. int i;
  1436. if (streamer_priv->streamer_message_level)
  1437. printk(KERN_INFO "%s: Read Log command completen", dev->name);
  1438. printk("Read Log statistics: ");
  1439. writew(streamer_priv->srb + 6,
  1440.        streamer_mmio + LAPA);
  1441. for (i = 0; i < 5; i++) {
  1442. printk("%x:", ntohs(readw(streamer_mmio + LAPDINC)));
  1443. }
  1444. printk("n");
  1445. }
  1446. break;
  1447. case 0x01:
  1448. printk(KERN_WARNING "%s: Unrecognized srb command n", dev->name);
  1449. break;
  1450. case 0x04:
  1451. printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!n", dev->name);
  1452. break;
  1454. } /* switch srb[2] */
  1455. break;
  1457. /* SRB_READ_SR_COUNTERS - Read and reset the source routing bridge related counters */
  1459. case SRB_READ_SR_COUNTERS:
  1460.         srb_word=ntohs(readw(streamer_mmio+LAPDINC)) >> 8;
  1461. switch (srb_word) {
  1462. case 0x00:
  1463. if (streamer_priv->streamer_message_level)
  1464. printk(KERN_INFO "%s: Read Source Routing Counters issuedn", dev->name);
  1465. break;
  1466. case 0x01:
  1467. printk(KERN_WARNING "%s: Unrecognized srb command n", dev->name);
  1468. break;
  1469. case 0x04:
  1470. printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!n", dev->name);
  1471. break;
  1472. default:
  1473. break;
  1474. } /* switch srb[2] */
  1475. break;
  1477. default:
  1478. printk(KERN_WARNING "%s: Unrecognized srb bh return value.n", dev->name);
  1479. break;
  1480. } /* switch srb[0] */
  1481. }
  1483. static struct net_device_stats *streamer_get_stats(struct net_device *dev)
  1484. {
  1485. struct streamer_private *streamer_priv;
  1486. streamer_priv = (struct streamer_private *) dev->priv;
  1487. return (struct net_device_stats *) &streamer_priv->streamer_stats;
  1488. }
  1490. static int streamer_set_mac_address(struct net_device *dev, void *addr)
  1491. {
  1492. struct sockaddr *saddr = addr;
  1493. struct streamer_private *streamer_priv = (struct streamer_private *) dev->priv;
  1495. if (netif_running(dev)) 
  1496. {
  1497. printk(KERN_WARNING "%s: Cannot set mac/laa address while card is openn", dev->name);
  1498. return -EIO;
  1499. }
  1501. memcpy(streamer_priv->streamer_laa, saddr->sa_data, dev->addr_len);
  1503. if (streamer_priv->streamer_message_level) {
  1504. printk(KERN_INFO "%s: MAC/LAA Set to  = %x.%x.%x.%x.%x.%xn",
  1505.        dev->name, streamer_priv->streamer_laa[0],
  1506.        streamer_priv->streamer_laa[1],
  1507.        streamer_priv->streamer_laa[2],
  1508.        streamer_priv->streamer_laa[3],
  1509.        streamer_priv->streamer_laa[4],
  1510.        streamer_priv->streamer_laa[5]);
  1511. }
  1512. return 0;
  1513. }
  1515. static void streamer_arb_cmd(struct net_device *dev)
  1516. {
  1517. struct streamer_private *streamer_priv =
  1518.     (struct streamer_private *) dev->priv;
  1519. __u8 *streamer_mmio = streamer_priv->streamer_mmio;
  1520. __u8 header_len;
  1521. __u16 frame_len, buffer_len;
  1522. struct sk_buff *mac_frame;
  1523. __u8 frame_data[256];
  1524. __u16 buff_off;
  1525. __u16 lan_status = 0, lan_status_diff; /* Initialize to stop compiler warning */
  1526. __u8 fdx_prot_error;
  1527. __u16 next_ptr;
  1528. __u16 arb_word;
  1530. #if STREAMER_NETWORK_MONITOR
  1531. struct trh_hdr *mac_hdr;
  1532. #endif
  1534. writew(streamer_priv->arb, streamer_mmio + LAPA);
  1535. arb_word=ntohs(readw(streamer_mmio+LAPD)) >> 8;
  1537. if (arb_word == ARB_RECEIVE_DATA) { /* Receive.data, MAC frames */
  1538. writew(streamer_priv->arb + 6, streamer_mmio + LAPA);
  1539. streamer_priv->mac_rx_buffer = buff_off = ntohs(readw(streamer_mmio + LAPDINC));
  1540. header_len=ntohs(readw(streamer_mmio+LAPDINC)) >> 8; /* 802.5 Token-Ring Header Length */
  1541. frame_len = ntohs(readw(streamer_mmio + LAPDINC));
  1543. #if STREAMER_DEBUG
  1544. {
  1545. int i;
  1546. __u16 next;
  1547. __u8 status;
  1548. __u16 len;
  1550. writew(ntohs(buff_off), streamer_mmio + LAPA); /*setup window to frame data */
  1551. next = htons(readw(streamer_mmio + LAPDINC));
  1552. status =
  1553.     ntohs(readw(streamer_mmio + LAPDINC)) & 0xff;
  1554. len = ntohs(readw(streamer_mmio + LAPDINC));
  1556. /* print out 1st 14 bytes of frame data */
  1557. for (i = 0; i < 7; i++) {
  1558. printk("Loc %d = %04xn", i,
  1559.        ntohs(readw
  1560.      (streamer_mmio + LAPDINC)));
  1561. }
  1563. printk("next %04x, fs %02x, len %04x n", next,
  1564.        status, len);
  1565. }
  1566. #endif
  1567. if (!(mac_frame = dev_alloc_skb(frame_len))) {
  1568. printk(KERN_WARNING "%s: Memory squeeze, dropping frame.n",
  1569.        dev->name);
  1570. goto drop_frame;
  1571. }
  1572. /* Walk the buffer chain, creating the frame */
  1574. do {
  1575. int i;
  1576. __u16 rx_word;
  1578. writew(htons(buff_off), streamer_mmio + LAPA); /* setup window to frame data */
  1579. next_ptr = ntohs(readw(streamer_mmio + LAPDINC));
  1580. readw(streamer_mmio + LAPDINC); /* read thru status word */
  1581. buffer_len = ntohs(readw(streamer_mmio + LAPDINC));
  1583. if (buffer_len > 256)
  1584. break;
  1586. i = 0;
  1587. while (i < buffer_len) {
  1588. rx_word=ntohs(readw(streamer_mmio+LAPDINC));
  1589. frame_data[i]=rx_word >> 8;
  1590. frame_data[i+1]=rx_word & 0xff;
  1591. i += 2;
  1592. }
  1594. memcpy_fromio(skb_put(mac_frame, buffer_len),
  1595.       frame_data, buffer_len);
  1596. } while (next_ptr && (buff_off = next_ptr));
  1598. #if STREAMER_NETWORK_MONITOR
  1599. printk(KERN_WARNING "%s: Received MAC Frame, details: n",
  1600.        dev->name);
  1601. mac_hdr = (struct trh_hdr *) mac_frame->data;
  1602. printk(KERN_WARNING
  1603.        "%s: MAC Frame Dest. Addr: %02x:%02x:%02x:%02x:%02x:%02x n",
  1604.        dev->name, mac_hdr->daddr[0], mac_hdr->daddr[1],
  1605.        mac_hdr->daddr[2], mac_hdr->daddr[3],
  1606.        mac_hdr->daddr[4], mac_hdr->daddr[5]);
  1607. printk(KERN_WARNING
  1608.        "%s: MAC Frame Srce. Addr: %02x:%02x:%02x:%02x:%02x:%02x n",
  1609.        dev->name, mac_hdr->saddr[0], mac_hdr->saddr[1],
  1610.        mac_hdr->saddr[2], mac_hdr->saddr[3],
  1611.        mac_hdr->saddr[4], mac_hdr->saddr[5]);
  1612. #endif
  1613. mac_frame->dev = dev;
  1614. mac_frame->protocol = tr_type_trans(mac_frame, dev);
  1615. netif_rx(mac_frame);
  1617. /* Now tell the card we have dealt with the received frame */
  1618. drop_frame:
  1619. /* Set LISR Bit 1 */
  1620. writel(LISR_ARB_FREE, streamer_priv->streamer_mmio + LISR_SUM);
  1622. /* Is the ASB free ? */
  1624. if (!(readl(streamer_priv->streamer_mmio + SISR) & SISR_ASB_FREE)) 
  1625. {
  1626. streamer_priv->asb_queued = 1;
  1627. writel(LISR_ASB_FREE_REQ, streamer_priv->streamer_mmio + LISR_SUM);
  1628. return;
  1629. /* Drop out and wait for the bottom half to be run */
  1630. }
  1633. writew(streamer_priv->asb, streamer_mmio + LAPA);
  1634. writew(htons(ASB_RECEIVE_DATA << 8), streamer_mmio+LAPDINC);
  1635. writew(htons(STREAMER_CLEAR_RET_CODE << 8), streamer_mmio+LAPDINC);
  1636. writew(0, streamer_mmio + LAPDINC);
  1637. writew(htons(streamer_priv->mac_rx_buffer), streamer_mmio + LAPD);
  1639. writel(LISR_ASB_REPLY | LISR_ASB_FREE_REQ, streamer_priv->streamer_mmio + LISR_SUM);
  1641. streamer_priv->asb_queued = 2;
  1642. return;
  1644. } else if (arb_word == ARB_LAN_CHANGE_STATUS) { /* Lan.change.status */
  1645. writew(streamer_priv->arb + 6, streamer_mmio + LAPA);
  1646. lan_status = ntohs(readw(streamer_mmio + LAPDINC));
  1647. fdx_prot_error = ntohs(readw(streamer_mmio+LAPD)) >> 8;
  1649. /* Issue ARB Free */
  1650. writew(LISR_ARB_FREE, streamer_priv->streamer_mmio + LISR_SUM);
  1652. lan_status_diff = (streamer_priv->streamer_lan_status ^ lan_status) & 
  1653.     lan_status; 
  1655. if (lan_status_diff & (LSC_LWF | LSC_ARW | LSC_FPE | LSC_RR)) 
  1656. {
  1657. if (lan_status_diff & LSC_LWF)
  1658. printk(KERN_WARNING "%s: Short circuit detected on the loben", dev->name);
  1659. if (lan_status_diff & LSC_ARW)
  1660. printk(KERN_WARNING "%s: Auto removal errorn", dev->name);
  1661. if (lan_status_diff & LSC_FPE)
  1662. printk(KERN_WARNING "%s: FDX Protocol Errorn", dev->name);
  1663. if (lan_status_diff & LSC_RR)
  1664. printk(KERN_WARNING "%s: Force remove MAC frame receivedn", dev->name);
  1666. /* Adapter has been closed by the hardware */
  1668. /* reset tx/rx fifo's and busmaster logic */
  1670. /* @TBD. no llc reset on autostreamer writel(readl(streamer_mmio+BCTL)|(3<<13),streamer_mmio+BCTL);
  1671.    udelay(1);
  1672.    writel(readl(streamer_mmio+BCTL)&~(3<<13),streamer_mmio+BCTL); */
  1673. netif_stop_queue(dev);
  1674. free_irq(dev->irq, dev);
  1676. printk(KERN_WARNING "%s: Adapter has been closed n", dev->name);
  1678. }
  1679. /* If serious error */
  1680. if (streamer_priv->streamer_message_level) {
  1681. if (lan_status_diff & LSC_SIG_LOSS)
  1682. printk(KERN_WARNING "%s: No receive signal detected n", dev->name);
  1683. if (lan_status_diff & LSC_HARD_ERR) 
  1684. printk(KERN_INFO "%s: Beaconing n", dev->name);
  1685. if (lan_status_diff & LSC_SOFT_ERR)
  1686. printk(KERN_WARNING "%s: Adapter transmitted Soft Error Report Mac Frame n", dev->name);
  1687. if (lan_status_diff & LSC_TRAN_BCN)
  1688. printk(KERN_INFO "%s: We are tranmitting the beacon, aaahn", dev->name);
  1689. if (lan_status_diff & LSC_SS)
  1690. printk(KERN_INFO "%s: Single Station on the ring n", dev->name);
  1691. if (lan_status_diff & LSC_RING_REC)
  1692. printk(KERN_INFO "%s: Ring recovery ongoingn", dev->name);
  1693. if (lan_status_diff & LSC_FDX_MODE)
  1694. printk(KERN_INFO "%s: Operating in FDX moden", dev->name);
  1695. }
  1697. if (lan_status_diff & LSC_CO) {
  1698. if (streamer_priv->streamer_message_level)
  1699. printk(KERN_INFO "%s: Counter Overflow n", dev->name);
  1701. /* Issue READ.LOG command */
  1703. writew(streamer_priv->srb, streamer_mmio + LAPA);
  1704. writew(htons(SRB_READ_LOG << 8),streamer_mmio+LAPDINC);
  1705. writew(htons(STREAMER_CLEAR_RET_CODE << 8), streamer_mmio+LAPDINC);
  1706. writew(0, streamer_mmio + LAPDINC);
  1707. streamer_priv->srb_queued = 2; /* Can't sleep, use srb_bh */
  1709. writew(LISR_SRB_CMD, streamer_mmio + LISR_SUM);
  1710. }
  1712. if (lan_status_diff & LSC_SR_CO) {
  1713. if (streamer_priv->streamer_message_level)
  1714. printk(KERN_INFO "%s: Source routing counters overflown", dev->name);
  1716. /* Issue a READ.SR.COUNTERS */
  1717. writew(streamer_priv->srb, streamer_mmio + LAPA);
  1718. writew(htons(SRB_READ_SR_COUNTERS << 8),
  1719.        streamer_mmio+LAPDINC);
  1720. writew(htons(STREAMER_CLEAR_RET_CODE << 8),
  1721.        streamer_mmio+LAPDINC);
  1722. streamer_priv->srb_queued = 2; /* Can't sleep, use srb_bh */
  1723. writew(LISR_SRB_CMD, streamer_mmio + LISR_SUM);
  1725. }
  1726. streamer_priv->streamer_lan_status = lan_status;
  1727. } /* Lan.change.status */
  1728. else
  1729. printk(KERN_WARNING "%s: Unknown arb command n", dev->name);
  1730. }
  1732. static void streamer_asb_bh(struct net_device *dev)
  1733. {
  1734. struct streamer_private *streamer_priv =
  1735.     (struct streamer_private *) dev->priv;
  1736. __u8 *streamer_mmio = streamer_priv->streamer_mmio;
  1738. if (streamer_priv->asb_queued == 1) 
  1739. {
  1740. /* Dropped through the first time */
  1742. writew(streamer_priv->asb, streamer_mmio + LAPA);
  1743. writew(htons(ASB_RECEIVE_DATA << 8),streamer_mmio+LAPDINC);
  1744. writew(htons(STREAMER_CLEAR_RET_CODE << 8), streamer_mmio+LAPDINC);
  1745. writew(0, streamer_mmio + LAPDINC);
  1746. writew(htons(streamer_priv->mac_rx_buffer), streamer_mmio + LAPD);
  1748. writel(LISR_ASB_REPLY | LISR_ASB_FREE_REQ, streamer_priv->streamer_mmio + LISR_SUM);
  1749. streamer_priv->asb_queued = 2;
  1751. return;
  1752. }
  1754. if (streamer_priv->asb_queued == 2) {
  1755. __u8 rc;
  1756. writew(streamer_priv->asb + 2, streamer_mmio + LAPA);
  1757. rc=ntohs(readw(streamer_mmio+LAPD)) >> 8;
  1758. switch (rc) {
  1759. case 0x01:
  1760. printk(KERN_WARNING "%s: Unrecognized command code n", dev->name);
  1761. break;
  1762. case 0x26:
  1763. printk(KERN_WARNING "%s: Unrecognized buffer address n", dev->name);
  1764. break;
  1765. case 0xFF:
  1766. /* Valid response, everything should be ok again */
  1767. break;
  1768. default:
  1769. printk(KERN_WARNING "%s: Invalid return code in asbn", dev->name);
  1770. break;
  1771. }
  1772. }
  1773. streamer_priv->asb_queued = 0;
  1774. }
  1776. static int streamer_change_mtu(struct net_device *dev, int mtu)
  1777. {
  1778. struct streamer_private *streamer_priv =
  1779.     (struct streamer_private *) dev->priv;
  1780. __u16 max_mtu;
  1782. if (streamer_priv->streamer_ring_speed == 4)
  1783. max_mtu = 4500;
  1784. else
  1785. max_mtu = 18000;
  1787. if (mtu > max_mtu)
  1788. return -EINVAL;
  1789. if (mtu < 100)
  1790. return -EINVAL;
  1792. dev->mtu = mtu;
  1793. streamer_priv->pkt_buf_sz = mtu + TR_HLEN;
  1795. return 0;
  1796. }
  1798. #if STREAMER_NETWORK_MONITOR
  1799. #ifdef CONFIG_PROC_FS
  1800. static int streamer_proc_info(char *buffer, char **start, off_t offset,
  1801.       int length, int *eof, void *data)
  1802. {
  1803.   struct streamer_private *sdev=NULL;
  1804. struct pci_dev *pci_device = NULL;
  1805. int len = 0;
  1806. off_t begin = 0;
  1807. off_t pos = 0;
  1808. int size;
  1810.   struct net_device *dev;
  1812. size = sprintf(buffer, "IBM LanStreamer/MPC Chipset Token Ring Adaptersn");
  1814. pos += size;
  1815. len += size;
  1817.   for(sdev=dev_streamer; sdev; sdev=sdev->next) {
  1818.     pci_device=sdev->pci_dev;
  1819.     dev=pci_get_drvdata(pci_device);
  1821. size = sprintf_info(buffer + len, dev);
  1822. len += size;
  1823. pos = begin + len;
  1825. if (pos < offset) {
  1826. len = 0;
  1827. begin = pos;
  1828. }
  1829. if (pos > offset + length)
  1830. break;
  1831. } /* for */
  1833. *start = buffer + (offset - begin); /* Start of wanted data */
  1834. len -= (offset - begin); /* Start slop */
  1835. if (len > length)
  1836. len = length; /* Ending slop */
  1837. return len;
  1838. }
  1840. static int sprintf_info(char *buffer, struct net_device *dev)
  1841. {
  1842. struct streamer_private *streamer_priv =
  1843.     (struct streamer_private *) dev->priv;
  1844. __u8 *streamer_mmio = streamer_priv->streamer_mmio;
  1845. struct streamer_adapter_addr_table sat;
  1846. struct streamer_parameters_table spt;
  1847. int size = 0;
  1848. int i;
  1850. writew(streamer_priv->streamer_addr_table_addr, streamer_mmio + LAPA);
  1851. for (i = 0; i < 14; i += 2) {
  1852. __u16 io_word;
  1853. __u8 *datap = (__u8 *) & sat;
  1854. io_word=ntohs(readw(streamer_mmio+LAPDINC));
  1855. datap[size]=io_word >> 8;
  1856. datap[size+1]=io_word & 0xff;
  1857. }
  1858. writew(streamer_priv->streamer_parms_addr, streamer_mmio + LAPA);
  1859. for (i = 0; i < 68; i += 2) {
  1860. __u16 io_word;
  1861. __u8 *datap = (__u8 *) & spt;
  1862. io_word=ntohs(readw(streamer_mmio+LAPDINC));
  1863. datap[size]=io_word >> 8;
  1864. datap[size+1]=io_word & 0xff;
  1865. }
  1868. size = sprintf(buffer, "n%6s: Adapter Address   : Node Address      : Functional Addrn", dev->name);
  1870. size += sprintf(buffer + size,
  1871.     "%6s: %02x:%02x:%02x:%02x:%02x:%02x : %02x:%02x:%02x:%02x:%02x:%02x : %02x:%02x:%02x:%02xn",
  1872.     dev->name, dev->dev_addr[0], dev->dev_addr[1],
  1873.     dev->dev_addr[2], dev->dev_addr[3], dev->dev_addr[4],
  1874.     dev->dev_addr[5], sat.node_addr[0], sat.node_addr[1],
  1875.     sat.node_addr[2], sat.node_addr[3], sat.node_addr[4],
  1876.     sat.node_addr[5], sat.func_addr[0], sat.func_addr[1],
  1877.     sat.func_addr[2], sat.func_addr[3]);
  1879. size += sprintf(buffer + size, "n%6s: Token Ring Parameters Table:n", dev->name);
  1881. size += sprintf(buffer + size, "%6s: Physical Addr : Up Node Address   : Poll Address      : AccPri : Auth Src : Att Code :n", dev->name);
  1883. size += sprintf(buffer + size,
  1884.     "%6s: %02x:%02x:%02x:%02x   : %02x:%02x:%02x:%02x:%02x:%02x : %02x:%02x:%02x:%02x:%02x:%02x : %04x   : %04x     :  %04x    :n",
  1885.     dev->name, spt.phys_addr[0], spt.phys_addr[1],
  1886.     spt.phys_addr[2], spt.phys_addr[3],
  1887.     spt.up_node_addr[0], spt.up_node_addr[1],
  1888.     spt.up_node_addr[2], spt.up_node_addr[3],
  1889.     spt.up_node_addr[4], spt.up_node_addr[4],
  1890.     spt.poll_addr[0], spt.poll_addr[1], spt.poll_addr[2],
  1891.     spt.poll_addr[3], spt.poll_addr[4], spt.poll_addr[5],
  1892.     ntohs(spt.acc_priority), ntohs(spt.auth_source_class),
  1893.     ntohs(spt.att_code));
  1895. size += sprintf(buffer + size, "%6s: Source Address    : Bcn T : Maj. V : Lan St : Lcl Rg : Mon Err : Frame Correl : n", dev->name);
  1897. size += sprintf(buffer + size,
  1898.     "%6s: %02x:%02x:%02x:%02x:%02x:%02x : %04x  : %04x   : %04x   : %04x   : %04x    :     %04x     : n",
  1899.     dev->name, spt.source_addr[0], spt.source_addr[1],
  1900.     spt.source_addr[2], spt.source_addr[3],
  1901.     spt.source_addr[4], spt.source_addr[5],
  1902.     ntohs(spt.beacon_type), ntohs(spt.major_vector),
  1903.     ntohs(spt.lan_status), ntohs(spt.local_ring),
  1904.     ntohs(spt.mon_error), ntohs(spt.frame_correl));
  1906. size += sprintf(buffer + size, "%6s: Beacon Details :  Tx  :  Rx  : NAUN Node Address : NAUN Node Phys : n",
  1907.     dev->name);
  1909. size += sprintf(buffer + size,
  1910.     "%6s:                :  %02x  :  %02x  : %02x:%02x:%02x:%02x:%02x:%02x : %02x:%02x:%02x:%02x    : n",
  1911.     dev->name, ntohs(spt.beacon_transmit),
  1912.     ntohs(spt.beacon_receive), spt.beacon_naun[0],
  1913.     spt.beacon_naun[1], spt.beacon_naun[2],
  1914.     spt.beacon_naun[3], spt.beacon_naun[4],
  1915.     spt.beacon_naun[5], spt.beacon_phys[0],
  1916.     spt.beacon_phys[1], spt.beacon_phys[2],
  1917.     spt.beacon_phys[3]);
  1918. return size;
  1919. }
  1920. #endif
  1921. #endif
  1923. #if STREAMER_IOCTL && (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
  1924. static int streamer_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
  1925. {
  1926.         int i;
  1927. struct streamer_private *streamer_priv = (struct streamer_private *) dev->priv;
  1928. u8 *streamer_mmio = streamer_priv->streamer_mmio;
  1930. switch(cmd) {
  1931. case IOCTL_SISR_MASK:
  1932. writew(SISR_MI, streamer_mmio + SISR_MASK_SUM);
  1933. break;
  1934. case IOCTL_SPIN_LOCK_TEST:
  1935.         printk(KERN_INFO "spin_lock() called.n");
  1936. spin_lock(&streamer_priv->streamer_lock);
  1937. spin_unlock(&streamer_priv->streamer_lock);
  1938. printk(KERN_INFO "spin_unlock() finished.n");
  1939. break;
  1940. case IOCTL_PRINT_BDAS:
  1941.         printk(KERN_INFO "bdas: RXBDA: %x RXLBDA: %x TX2FDA: %x TX2LFDA: %xn",
  1942.        readw(streamer_mmio + RXBDA),
  1943.        readw(streamer_mmio + RXLBDA),
  1944.        readw(streamer_mmio + TX2FDA),
  1945.        readw(streamer_mmio + TX2LFDA));
  1946. break;
  1947. case IOCTL_PRINT_REGISTERS:
  1948.         printk(KERN_INFO "registers:n");
  1949. printk(KERN_INFO "SISR: %04x MISR: %04x LISR: %04x BCTL: %04x BMCTL: %04xnmask  %04x mask  %04xn", 
  1950.        readw(streamer_mmio + SISR),
  1951.        readw(streamer_mmio + MISR_RUM),
  1952.        readw(streamer_mmio + LISR),
  1953.        readw(streamer_mmio + BCTL),
  1954.        readw(streamer_mmio + BMCTL_SUM),
  1955.        readw(streamer_mmio + SISR_MASK),
  1956.        readw(streamer_mmio + MISR_MASK));
  1957. break;
  1958. case IOCTL_PRINT_RX_BUFS:
  1959.         printk(KERN_INFO "Print rx bufs:n");
  1960. for(i=0; i<STREAMER_RX_RING_SIZE; i++)
  1961.         printk(KERN_INFO "rx_ring %d status: 0x%xn", i, 
  1962.        streamer_priv->streamer_rx_ring[i].status);
  1963. break;
  1964. case IOCTL_PRINT_TX_BUFS:
  1965.         printk(KERN_INFO "Print tx bufs:n");
  1966. for(i=0; i<STREAMER_TX_RING_SIZE; i++)
  1967.         printk(KERN_INFO "tx_ring %d status: 0x%xn", i, 
  1968.        streamer_priv->streamer_tx_ring[i].status);
  1969. break;
  1970. case IOCTL_RX_CMD:
  1971.         streamer_rx(dev);
  1972. printk(KERN_INFO "Sent rx command.n");
  1973. break;
  1974. default:
  1975.         printk(KERN_INFO "Bad ioctl!n");
  1976. }
  1977. return 0;
  1978. }
  1979. #endif
  1981. static struct pci_driver streamer_pci_driver = {
  1982.   name:       "lanstreamer",
  1983.   id_table:   streamer_pci_tbl,
  1984.   probe:      streamer_init_one,
  1985.   remove:     __devexit_p(streamer_remove_one),
  1986. };
  1988. static int __init streamer_init_module(void) {
  1989.   return pci_module_init(&streamer_pci_driver);
  1990. }
  1992. static void __exit streamer_cleanup_module(void) {
  1993.   pci_unregister_driver(&streamer_pci_driver);
  1994. }
  1996. module_init(streamer_init_module);
  1997. module_exit(streamer_cleanup_module);
  1998. MODULE_LICENSE("GPL");