sun3_82586.c 33 KB

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  1. /*
  2. * Sun3 i82586 Ethernet driver
  3. *
  4. * Cloned from ni52.c for the Sun3 by Sam Creasey (sammy@sammy.net)
  5. *
  6. * Original copyright follows:
  7. * --------------------------
  8. *
  9. * net-3-driver for the NI5210 card (i82586 Ethernet chip)
  10. *
  11. * This is an extension to the Linux operating system, and is covered by the
  12. * same Gnu Public License that covers that work.
  13. *
  14. * Alphacode 0.82 (96/09/29) for Linux 2.0.0 (or later)
  15. * Copyrights (c) 1994,1995,1996 by M.Hipp (hippm@informatik.uni-tuebingen.de)
  16. * --------------------------
  17. *
  18. * Consult ni52.c for further notes from the original driver.
  19. *
  20. * This incarnation currently supports the OBIO version of the i82586 chip
  21. * used in certain sun3 models. It should be fairly doable to expand this
  22. * to support VME if I should every acquire such a board.
  23. *
  24. */
  25. static int debuglevel = 0; /* debug-printk 0: off 1: a few 2: more */
  26. static int automatic_resume = 0; /* experimental .. better should be zero */
  27. static int rfdadd = 0; /* rfdadd=1 may be better for 8K MEM cards */
  28. static int fifo=0x8; /* don't change */
  29. #include <linux/module.h>
  30. #include <linux/kernel.h>
  31. #include <linux/string.h>
  32. #include <linux/errno.h>
  33. #include <linux/ioport.h>
  34. #include <linux/slab.h>
  35. #include <linux/interrupt.h>
  36. #include <linux/delay.h>
  37. #include <linux/init.h>
  38. #include <linux/bitops.h>
  39. #include <asm/io.h>
  40. #include <asm/idprom.h>
  41. #include <asm/machines.h>
  42. #include <asm/sun3mmu.h>
  43. #include <asm/dvma.h>
  44. #include <asm/byteorder.h>
  45. #include <linux/netdevice.h>
  46. #include <linux/etherdevice.h>
  47. #include <linux/skbuff.h>
  48. #include "sun3_82586.h"
  49. #define DRV_NAME "sun3_82586"
  50. #define DEBUG /* debug on */
  51. #define SYSBUSVAL 0 /* 16 Bit */
  52. #define SUN3_82586_TOTAL_SIZE PAGE_SIZE
  53. #define sun3_attn586() {*(volatile unsigned char *)(dev->base_addr) |= IEOB_ATTEN; *(volatile unsigned char *)(dev->base_addr) &= ~IEOB_ATTEN;}
  54. #define sun3_reset586() {*(volatile unsigned char *)(dev->base_addr) = 0; udelay(100); *(volatile unsigned char *)(dev->base_addr) = IEOB_NORSET;}
  55. #define sun3_disint() {*(volatile unsigned char *)(dev->base_addr) &= ~IEOB_IENAB;}
  56. #define sun3_enaint() {*(volatile unsigned char *)(dev->base_addr) |= IEOB_IENAB;}
  57. #define sun3_active() {*(volatile unsigned char *)(dev->base_addr) |= (IEOB_IENAB|IEOB_ONAIR|IEOB_NORSET);}
  58. #define make32(ptr16) (p->memtop + (swab16((unsigned short) (ptr16))) )
  59. #define make24(ptr32) (char *)swab32(( ((unsigned long) (ptr32)) - p->base))
  60. #define make16(ptr32) (swab16((unsigned short) ((unsigned long)(ptr32) - (unsigned long) p->memtop )))
  61. /******************* how to calculate the buffers *****************************
  62. * IMPORTANT NOTE: if you configure only one NUM_XMIT_BUFFS, the driver works
  63. * --------------- in a different (more stable?) mode. Only in this mode it's
  64. * possible to configure the driver with 'NO_NOPCOMMANDS'
  65. sizeof(scp)=12; sizeof(scb)=16; sizeof(iscp)=8;
  66. sizeof(scp)+sizeof(iscp)+sizeof(scb) = 36 = INIT
  67. sizeof(rfd) = 24; sizeof(rbd) = 12;
  68. sizeof(tbd) = 8; sizeof(transmit_cmd) = 16;
  69. sizeof(nop_cmd) = 8;
  70. * if you don't know the driver, better do not change these values: */
  71. #define RECV_BUFF_SIZE 1536 /* slightly oversized */
  72. #define XMIT_BUFF_SIZE 1536 /* slightly oversized */
  73. #define NUM_XMIT_BUFFS 1 /* config for 32K shmem */
  74. #define NUM_RECV_BUFFS_8 4 /* config for 32K shared mem */
  75. #define NUM_RECV_BUFFS_16 9 /* config for 32K shared mem */
  76. #define NUM_RECV_BUFFS_32 16 /* config for 32K shared mem */
  77. #define NO_NOPCOMMANDS /* only possible with NUM_XMIT_BUFFS=1 */
  78. /**************************************************************************/
  79. /* different DELAYs */
  80. #define DELAY(x) mdelay(32 * x);
  81. #define DELAY_16(); { udelay(16); }
  82. #define DELAY_18(); { udelay(4); }
  83. /* wait for command with timeout: */
  84. #define WAIT_4_SCB_CMD() \
  85. { int i; \
  86. for(i=0;i<16384;i++) { \
  87. if(!p->scb->cmd_cuc) break; \
  88. DELAY_18(); \
  89. if(i == 16383) { \
  90. printk("%s: scb_cmd timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_cuc,p->scb->cus); \
  91. if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
  92. #define WAIT_4_SCB_CMD_RUC() { int i; \
  93. for(i=0;i<16384;i++) { \
  94. if(!p->scb->cmd_ruc) break; \
  95. DELAY_18(); \
  96. if(i == 16383) { \
  97. printk("%s: scb_cmd (ruc) timed out: %04x,%04x .. disabling i82586!!\n",dev->name,p->scb->cmd_ruc,p->scb->rus); \
  98. if(!p->reseted) { p->reseted = 1; sun3_reset586(); } } } }
  99. #define WAIT_4_STAT_COMPL(addr) { int i; \
  100. for(i=0;i<32767;i++) { \
  101. if(swab16((addr)->cmd_status) & STAT_COMPL) break; \
  102. DELAY_16(); DELAY_16(); } }
  103. static int sun3_82586_probe1(struct net_device *dev,int ioaddr);
  104. static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id);
  105. static int sun3_82586_open(struct net_device *dev);
  106. static int sun3_82586_close(struct net_device *dev);
  107. static int sun3_82586_send_packet(struct sk_buff *,struct net_device *);
  108. static struct net_device_stats *sun3_82586_get_stats(struct net_device *dev);
  109. static void set_multicast_list(struct net_device *dev);
  110. static void sun3_82586_timeout(struct net_device *dev);
  111. #if 0
  112. static void sun3_82586_dump(struct net_device *,void *);
  113. #endif
  114. /* helper-functions */
  115. static int init586(struct net_device *dev);
  116. static int check586(struct net_device *dev,char *where,unsigned size);
  117. static void alloc586(struct net_device *dev);
  118. static void startrecv586(struct net_device *dev);
  119. static void *alloc_rfa(struct net_device *dev,void *ptr);
  120. static void sun3_82586_rcv_int(struct net_device *dev);
  121. static void sun3_82586_xmt_int(struct net_device *dev);
  122. static void sun3_82586_rnr_int(struct net_device *dev);
  123. struct priv
  124. {
  125. struct net_device_stats stats;
  126. unsigned long base;
  127. char *memtop;
  128. long int lock;
  129. int reseted;
  130. volatile struct rfd_struct *rfd_last,*rfd_top,*rfd_first;
  131. volatile struct scp_struct *scp; /* volatile is important */
  132. volatile struct iscp_struct *iscp; /* volatile is important */
  133. volatile struct scb_struct *scb; /* volatile is important */
  134. volatile struct tbd_struct *xmit_buffs[NUM_XMIT_BUFFS];
  135. volatile struct transmit_cmd_struct *xmit_cmds[NUM_XMIT_BUFFS];
  136. #if (NUM_XMIT_BUFFS == 1)
  137. volatile struct nop_cmd_struct *nop_cmds[2];
  138. #else
  139. volatile struct nop_cmd_struct *nop_cmds[NUM_XMIT_BUFFS];
  140. #endif
  141. volatile int nop_point,num_recv_buffs;
  142. volatile char *xmit_cbuffs[NUM_XMIT_BUFFS];
  143. volatile int xmit_count,xmit_last;
  144. };
  145. /**********************************************
  146. * close device
  147. */
  148. static int sun3_82586_close(struct net_device *dev)
  149. {
  150. free_irq(dev->irq, dev);
  151. sun3_reset586(); /* the hard way to stop the receiver */
  152. netif_stop_queue(dev);
  153. return 0;
  154. }
  155. /**********************************************
  156. * open device
  157. */
  158. static int sun3_82586_open(struct net_device *dev)
  159. {
  160. int ret;
  161. sun3_disint();
  162. alloc586(dev);
  163. init586(dev);
  164. startrecv586(dev);
  165. sun3_enaint();
  166. ret = request_irq(dev->irq, &sun3_82586_interrupt,0,dev->name,dev);
  167. if (ret)
  168. {
  169. sun3_reset586();
  170. return ret;
  171. }
  172. netif_start_queue(dev);
  173. return 0; /* most done by init */
  174. }
  175. /**********************************************
  176. * Check to see if there's an 82586 out there.
  177. */
  178. static int check586(struct net_device *dev,char *where,unsigned size)
  179. {
  180. struct priv pb;
  181. struct priv *p = /* (struct priv *) dev->priv*/ &pb;
  182. char *iscp_addr;
  183. int i;
  184. p->base = (unsigned long) dvma_btov(0);
  185. p->memtop = (char *)dvma_btov((unsigned long)where);
  186. p->scp = (struct scp_struct *)(p->base + SCP_DEFAULT_ADDRESS);
  187. memset((char *)p->scp,0, sizeof(struct scp_struct));
  188. for(i=0;i<sizeof(struct scp_struct);i++) /* memory was writeable? */
  189. if(((char *)p->scp)[i])
  190. return 0;
  191. p->scp->sysbus = SYSBUSVAL; /* 1 = 8Bit-Bus, 0 = 16 Bit */
  192. if(p->scp->sysbus != SYSBUSVAL)
  193. return 0;
  194. iscp_addr = (char *)dvma_btov((unsigned long)where);
  195. p->iscp = (struct iscp_struct *) iscp_addr;
  196. memset((char *)p->iscp,0, sizeof(struct iscp_struct));
  197. p->scp->iscp = make24(p->iscp);
  198. p->iscp->busy = 1;
  199. sun3_reset586();
  200. sun3_attn586();
  201. DELAY(1); /* wait a while... */
  202. if(p->iscp->busy) /* i82586 clears 'busy' after successful init */
  203. return 0;
  204. return 1;
  205. }
  206. /******************************************************************
  207. * set iscp at the right place, called by sun3_82586_probe1 and open586.
  208. */
  209. static void alloc586(struct net_device *dev)
  210. {
  211. struct priv *p = (struct priv *) dev->priv;
  212. sun3_reset586();
  213. DELAY(1);
  214. p->scp = (struct scp_struct *) (p->base + SCP_DEFAULT_ADDRESS);
  215. p->iscp = (struct iscp_struct *) dvma_btov(dev->mem_start);
  216. p->scb = (struct scb_struct *) ((char *)p->iscp + sizeof(struct iscp_struct));
  217. memset((char *) p->iscp,0,sizeof(struct iscp_struct));
  218. memset((char *) p->scp ,0,sizeof(struct scp_struct));
  219. p->scp->iscp = make24(p->iscp);
  220. p->scp->sysbus = SYSBUSVAL;
  221. p->iscp->scb_offset = make16(p->scb);
  222. p->iscp->scb_base = make24(dvma_btov(dev->mem_start));
  223. p->iscp->busy = 1;
  224. sun3_reset586();
  225. sun3_attn586();
  226. DELAY(1);
  227. if(p->iscp->busy)
  228. printk("%s: Init-Problems (alloc).\n",dev->name);
  229. p->reseted = 0;
  230. memset((char *)p->scb,0,sizeof(struct scb_struct));
  231. }
  232. struct net_device * __init sun3_82586_probe(int unit)
  233. {
  234. struct net_device *dev;
  235. unsigned long ioaddr;
  236. static int found = 0;
  237. int err = -ENOMEM;
  238. /* check that this machine has an onboard 82586 */
  239. switch(idprom->id_machtype) {
  240. case SM_SUN3|SM_3_160:
  241. case SM_SUN3|SM_3_260:
  242. /* these machines have 82586 */
  243. break;
  244. default:
  245. return ERR_PTR(-ENODEV);
  246. }
  247. if (found)
  248. return ERR_PTR(-ENODEV);
  249. ioaddr = (unsigned long)ioremap(IE_OBIO, SUN3_82586_TOTAL_SIZE);
  250. if (!ioaddr)
  251. return ERR_PTR(-ENOMEM);
  252. found = 1;
  253. dev = alloc_etherdev(sizeof(struct priv));
  254. if (!dev)
  255. goto out;
  256. if (unit >= 0) {
  257. sprintf(dev->name, "eth%d", unit);
  258. netdev_boot_setup_check(dev);
  259. }
  260. SET_MODULE_OWNER(dev);
  261. dev->irq = IE_IRQ;
  262. dev->base_addr = ioaddr;
  263. err = sun3_82586_probe1(dev, ioaddr);
  264. if (err)
  265. goto out1;
  266. err = register_netdev(dev);
  267. if (err)
  268. goto out2;
  269. return dev;
  270. out2:
  271. release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
  272. out1:
  273. free_netdev(dev);
  274. out:
  275. iounmap((void __iomem *)ioaddr);
  276. return ERR_PTR(err);
  277. }
  278. static int __init sun3_82586_probe1(struct net_device *dev,int ioaddr)
  279. {
  280. int i, size, retval;
  281. if (!request_region(ioaddr, SUN3_82586_TOTAL_SIZE, DRV_NAME))
  282. return -EBUSY;
  283. /* copy in the ethernet address from the prom */
  284. for(i = 0; i < 6 ; i++)
  285. dev->dev_addr[i] = idprom->id_ethaddr[i];
  286. printk("%s: SUN3 Intel 82586 found at %lx, ",dev->name,dev->base_addr);
  287. /*
  288. * check (or search) IO-Memory, 32K
  289. */
  290. size = 0x8000;
  291. dev->mem_start = (unsigned long)dvma_malloc_align(0x8000, 0x1000);
  292. dev->mem_end = dev->mem_start + size;
  293. if(size != 0x2000 && size != 0x4000 && size != 0x8000) {
  294. printk("\n%s: Illegal memory size %d. Allowed is 0x2000 or 0x4000 or 0x8000 bytes.\n",dev->name,size);
  295. retval = -ENODEV;
  296. goto out;
  297. }
  298. if(!check586(dev,(char *) dev->mem_start,size)) {
  299. printk("?memcheck, Can't find memory at 0x%lx with size %d!\n",dev->mem_start,size);
  300. retval = -ENODEV;
  301. goto out;
  302. }
  303. ((struct priv *) (dev->priv))->memtop = (char *)dvma_btov(dev->mem_start);
  304. ((struct priv *) (dev->priv))->base = (unsigned long) dvma_btov(0);
  305. alloc586(dev);
  306. /* set number of receive-buffs according to memsize */
  307. if(size == 0x2000)
  308. ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_8;
  309. else if(size == 0x4000)
  310. ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_16;
  311. else
  312. ((struct priv *) dev->priv)->num_recv_buffs = NUM_RECV_BUFFS_32;
  313. printk("Memaddr: 0x%lx, Memsize: %d, IRQ %d\n",dev->mem_start,size, dev->irq);
  314. dev->open = sun3_82586_open;
  315. dev->stop = sun3_82586_close;
  316. dev->get_stats = sun3_82586_get_stats;
  317. dev->tx_timeout = sun3_82586_timeout;
  318. dev->watchdog_timeo = HZ/20;
  319. dev->hard_start_xmit = sun3_82586_send_packet;
  320. dev->set_multicast_list = set_multicast_list;
  321. dev->if_port = 0;
  322. return 0;
  323. out:
  324. release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
  325. return retval;
  326. }
  327. static int init586(struct net_device *dev)
  328. {
  329. void *ptr;
  330. int i,result=0;
  331. struct priv *p = (struct priv *) dev->priv;
  332. volatile struct configure_cmd_struct *cfg_cmd;
  333. volatile struct iasetup_cmd_struct *ias_cmd;
  334. volatile struct tdr_cmd_struct *tdr_cmd;
  335. volatile struct mcsetup_cmd_struct *mc_cmd;
  336. struct dev_mc_list *dmi=dev->mc_list;
  337. int num_addrs=dev->mc_count;
  338. ptr = (void *) ((char *)p->scb + sizeof(struct scb_struct));
  339. cfg_cmd = (struct configure_cmd_struct *)ptr; /* configure-command */
  340. cfg_cmd->cmd_status = 0;
  341. cfg_cmd->cmd_cmd = swab16(CMD_CONFIGURE | CMD_LAST);
  342. cfg_cmd->cmd_link = 0xffff;
  343. cfg_cmd->byte_cnt = 0x0a; /* number of cfg bytes */
  344. cfg_cmd->fifo = fifo; /* fifo-limit (8=tx:32/rx:64) */
  345. cfg_cmd->sav_bf = 0x40; /* hold or discard bad recv frames (bit 7) */
  346. cfg_cmd->adr_len = 0x2e; /* addr_len |!src_insert |pre-len |loopback */
  347. cfg_cmd->priority = 0x00;
  348. cfg_cmd->ifs = 0x60;
  349. cfg_cmd->time_low = 0x00;
  350. cfg_cmd->time_high = 0xf2;
  351. cfg_cmd->promisc = 0;
  352. if(dev->flags & IFF_ALLMULTI) {
  353. int len = ((char *) p->iscp - (char *) ptr - 8) / 6;
  354. if(num_addrs > len) {
  355. printk("%s: switching to promisc. mode\n",dev->name);
  356. dev->flags|=IFF_PROMISC;
  357. }
  358. }
  359. if(dev->flags&IFF_PROMISC)
  360. {
  361. cfg_cmd->promisc=1;
  362. dev->flags|=IFF_PROMISC;
  363. }
  364. cfg_cmd->carr_coll = 0x00;
  365. p->scb->cbl_offset = make16(cfg_cmd);
  366. p->scb->cmd_ruc = 0;
  367. p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
  368. sun3_attn586();
  369. WAIT_4_STAT_COMPL(cfg_cmd);
  370. if((swab16(cfg_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_COMPL|STAT_OK))
  371. {
  372. printk("%s: configure command failed: %x\n",dev->name,swab16(cfg_cmd->cmd_status));
  373. return 1;
  374. }
  375. /*
  376. * individual address setup
  377. */
  378. ias_cmd = (struct iasetup_cmd_struct *)ptr;
  379. ias_cmd->cmd_status = 0;
  380. ias_cmd->cmd_cmd = swab16(CMD_IASETUP | CMD_LAST);
  381. ias_cmd->cmd_link = 0xffff;
  382. memcpy((char *)&ias_cmd->iaddr,(char *) dev->dev_addr,ETH_ALEN);
  383. p->scb->cbl_offset = make16(ias_cmd);
  384. p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
  385. sun3_attn586();
  386. WAIT_4_STAT_COMPL(ias_cmd);
  387. if((swab16(ias_cmd->cmd_status) & (STAT_OK|STAT_COMPL)) != (STAT_OK|STAT_COMPL)) {
  388. printk("%s (82586): individual address setup command failed: %04x\n",dev->name,swab16(ias_cmd->cmd_status));
  389. return 1;
  390. }
  391. /*
  392. * TDR, wire check .. e.g. no resistor e.t.c
  393. */
  394. tdr_cmd = (struct tdr_cmd_struct *)ptr;
  395. tdr_cmd->cmd_status = 0;
  396. tdr_cmd->cmd_cmd = swab16(CMD_TDR | CMD_LAST);
  397. tdr_cmd->cmd_link = 0xffff;
  398. tdr_cmd->status = 0;
  399. p->scb->cbl_offset = make16(tdr_cmd);
  400. p->scb->cmd_cuc = CUC_START; /* cmd.-unit start */
  401. sun3_attn586();
  402. WAIT_4_STAT_COMPL(tdr_cmd);
  403. if(!(swab16(tdr_cmd->cmd_status) & STAT_COMPL))
  404. {
  405. printk("%s: Problems while running the TDR.\n",dev->name);
  406. }
  407. else
  408. {
  409. DELAY_16(); /* wait for result */
  410. result = swab16(tdr_cmd->status);
  411. p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
  412. sun3_attn586(); /* ack the interrupts */
  413. if(result & TDR_LNK_OK)
  414. ;
  415. else if(result & TDR_XCVR_PRB)
  416. printk("%s: TDR: Transceiver problem. Check the cable(s)!\n",dev->name);
  417. else if(result & TDR_ET_OPN)
  418. printk("%s: TDR: No correct termination %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
  419. else if(result & TDR_ET_SRT)
  420. {
  421. if (result & TDR_TIMEMASK) /* time == 0 -> strange :-) */
  422. printk("%s: TDR: Detected a short circuit %d clocks away.\n",dev->name,result & TDR_TIMEMASK);
  423. }
  424. else
  425. printk("%s: TDR: Unknown status %04x\n",dev->name,result);
  426. }
  427. /*
  428. * Multicast setup
  429. */
  430. if(num_addrs && !(dev->flags & IFF_PROMISC) )
  431. {
  432. mc_cmd = (struct mcsetup_cmd_struct *) ptr;
  433. mc_cmd->cmd_status = 0;
  434. mc_cmd->cmd_cmd = swab16(CMD_MCSETUP | CMD_LAST);
  435. mc_cmd->cmd_link = 0xffff;
  436. mc_cmd->mc_cnt = swab16(num_addrs * 6);
  437. for(i=0;i<num_addrs;i++,dmi=dmi->next)
  438. memcpy((char *) mc_cmd->mc_list[i], dmi->dmi_addr,6);
  439. p->scb->cbl_offset = make16(mc_cmd);
  440. p->scb->cmd_cuc = CUC_START;
  441. sun3_attn586();
  442. WAIT_4_STAT_COMPL(mc_cmd);
  443. if( (swab16(mc_cmd->cmd_status) & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
  444. printk("%s: Can't apply multicast-address-list.\n",dev->name);
  445. }
  446. /*
  447. * alloc nop/xmit-cmds
  448. */
  449. #if (NUM_XMIT_BUFFS == 1)
  450. for(i=0;i<2;i++)
  451. {
  452. p->nop_cmds[i] = (struct nop_cmd_struct *)ptr;
  453. p->nop_cmds[i]->cmd_cmd = swab16(CMD_NOP);
  454. p->nop_cmds[i]->cmd_status = 0;
  455. p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i]));
  456. ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
  457. }
  458. #else
  459. for(i=0;i<NUM_XMIT_BUFFS;i++)
  460. {
  461. p->nop_cmds[i] = (struct nop_cmd_struct *)ptr;
  462. p->nop_cmds[i]->cmd_cmd = swab16(CMD_NOP);
  463. p->nop_cmds[i]->cmd_status = 0;
  464. p->nop_cmds[i]->cmd_link = make16((p->nop_cmds[i]));
  465. ptr = (char *) ptr + sizeof(struct nop_cmd_struct);
  466. }
  467. #endif
  468. ptr = alloc_rfa(dev,(void *)ptr); /* init receive-frame-area */
  469. /*
  470. * alloc xmit-buffs / init xmit_cmds
  471. */
  472. for(i=0;i<NUM_XMIT_BUFFS;i++)
  473. {
  474. p->xmit_cmds[i] = (struct transmit_cmd_struct *)ptr; /*transmit cmd/buff 0*/
  475. ptr = (char *) ptr + sizeof(struct transmit_cmd_struct);
  476. p->xmit_cbuffs[i] = (char *)ptr; /* char-buffs */
  477. ptr = (char *) ptr + XMIT_BUFF_SIZE;
  478. p->xmit_buffs[i] = (struct tbd_struct *)ptr; /* TBD */
  479. ptr = (char *) ptr + sizeof(struct tbd_struct);
  480. if((void *)ptr > (void *)dev->mem_end)
  481. {
  482. printk("%s: not enough shared-mem for your configuration!\n",dev->name);
  483. return 1;
  484. }
  485. memset((char *)(p->xmit_cmds[i]) ,0, sizeof(struct transmit_cmd_struct));
  486. memset((char *)(p->xmit_buffs[i]),0, sizeof(struct tbd_struct));
  487. p->xmit_cmds[i]->cmd_link = make16(p->nop_cmds[(i+1)%NUM_XMIT_BUFFS]);
  488. p->xmit_cmds[i]->cmd_status = swab16(STAT_COMPL);
  489. p->xmit_cmds[i]->cmd_cmd = swab16(CMD_XMIT | CMD_INT);
  490. p->xmit_cmds[i]->tbd_offset = make16((p->xmit_buffs[i]));
  491. p->xmit_buffs[i]->next = 0xffff;
  492. p->xmit_buffs[i]->buffer = make24((p->xmit_cbuffs[i]));
  493. }
  494. p->xmit_count = 0;
  495. p->xmit_last = 0;
  496. #ifndef NO_NOPCOMMANDS
  497. p->nop_point = 0;
  498. #endif
  499. /*
  500. * 'start transmitter'
  501. */
  502. #ifndef NO_NOPCOMMANDS
  503. p->scb->cbl_offset = make16(p->nop_cmds[0]);
  504. p->scb->cmd_cuc = CUC_START;
  505. sun3_attn586();
  506. WAIT_4_SCB_CMD();
  507. #else
  508. p->xmit_cmds[0]->cmd_link = make16(p->xmit_cmds[0]);
  509. p->xmit_cmds[0]->cmd_cmd = swab16(CMD_XMIT | CMD_SUSPEND | CMD_INT);
  510. #endif
  511. /*
  512. * ack. interrupts
  513. */
  514. p->scb->cmd_cuc = p->scb->cus & STAT_MASK;
  515. sun3_attn586();
  516. DELAY_16();
  517. sun3_enaint();
  518. sun3_active();
  519. return 0;
  520. }
  521. /******************************************************
  522. * This is a helper routine for sun3_82586_rnr_int() and init586().
  523. * It sets up the Receive Frame Area (RFA).
  524. */
  525. static void *alloc_rfa(struct net_device *dev,void *ptr)
  526. {
  527. volatile struct rfd_struct *rfd = (struct rfd_struct *)ptr;
  528. volatile struct rbd_struct *rbd;
  529. int i;
  530. struct priv *p = (struct priv *) dev->priv;
  531. memset((char *) rfd,0,sizeof(struct rfd_struct)*(p->num_recv_buffs+rfdadd));
  532. p->rfd_first = rfd;
  533. for(i = 0; i < (p->num_recv_buffs+rfdadd); i++) {
  534. rfd[i].next = make16(rfd + (i+1) % (p->num_recv_buffs+rfdadd) );
  535. rfd[i].rbd_offset = 0xffff;
  536. }
  537. rfd[p->num_recv_buffs-1+rfdadd].last = RFD_SUSP; /* RU suspend */
  538. ptr = (void *) (rfd + (p->num_recv_buffs + rfdadd) );
  539. rbd = (struct rbd_struct *) ptr;
  540. ptr = (void *) (rbd + p->num_recv_buffs);
  541. /* clr descriptors */
  542. memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs));
  543. for(i=0;i<p->num_recv_buffs;i++)
  544. {
  545. rbd[i].next = make16((rbd + (i+1) % p->num_recv_buffs));
  546. rbd[i].size = swab16(RECV_BUFF_SIZE);
  547. rbd[i].buffer = make24(ptr);
  548. ptr = (char *) ptr + RECV_BUFF_SIZE;
  549. }
  550. p->rfd_top = p->rfd_first;
  551. p->rfd_last = p->rfd_first + (p->num_recv_buffs - 1 + rfdadd);
  552. p->scb->rfa_offset = make16(p->rfd_first);
  553. p->rfd_first->rbd_offset = make16(rbd);
  554. return ptr;
  555. }
  556. /**************************************************
  557. * Interrupt Handler ...
  558. */
  559. static irqreturn_t sun3_82586_interrupt(int irq,void *dev_id)
  560. {
  561. struct net_device *dev = dev_id;
  562. unsigned short stat;
  563. int cnt=0;
  564. struct priv *p;
  565. if (!dev) {
  566. printk ("sun3_82586-interrupt: irq %d for unknown device.\n",irq);
  567. return IRQ_NONE;
  568. }
  569. p = (struct priv *) dev->priv;
  570. if(debuglevel > 1)
  571. printk("I");
  572. WAIT_4_SCB_CMD(); /* wait for last command */
  573. while((stat=p->scb->cus & STAT_MASK))
  574. {
  575. p->scb->cmd_cuc = stat;
  576. sun3_attn586();
  577. if(stat & STAT_FR) /* received a frame */
  578. sun3_82586_rcv_int(dev);
  579. if(stat & STAT_RNR) /* RU went 'not ready' */
  580. {
  581. printk("(R)");
  582. if(p->scb->rus & RU_SUSPEND) /* special case: RU_SUSPEND */
  583. {
  584. WAIT_4_SCB_CMD();
  585. p->scb->cmd_ruc = RUC_RESUME;
  586. sun3_attn586();
  587. WAIT_4_SCB_CMD_RUC();
  588. }
  589. else
  590. {
  591. printk("%s: Receiver-Unit went 'NOT READY': %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->rus);
  592. sun3_82586_rnr_int(dev);
  593. }
  594. }
  595. if(stat & STAT_CX) /* command with I-bit set complete */
  596. sun3_82586_xmt_int(dev);
  597. #ifndef NO_NOPCOMMANDS
  598. if(stat & STAT_CNA) /* CU went 'not ready' */
  599. {
  600. if(netif_running(dev))
  601. printk("%s: oops! CU has left active state. stat: %04x/%02x.\n",dev->name,(int) stat,(int) p->scb->cus);
  602. }
  603. #endif
  604. if(debuglevel > 1)
  605. printk("%d",cnt++);
  606. WAIT_4_SCB_CMD(); /* wait for ack. (sun3_82586_xmt_int can be faster than ack!!) */
  607. if(p->scb->cmd_cuc) /* timed out? */
  608. {
  609. printk("%s: Acknowledge timed out.\n",dev->name);
  610. sun3_disint();
  611. break;
  612. }
  613. }
  614. if(debuglevel > 1)
  615. printk("i");
  616. return IRQ_HANDLED;
  617. }
  618. /*******************************************************
  619. * receive-interrupt
  620. */
  621. static void sun3_82586_rcv_int(struct net_device *dev)
  622. {
  623. int status,cnt=0;
  624. unsigned short totlen;
  625. struct sk_buff *skb;
  626. struct rbd_struct *rbd;
  627. struct priv *p = (struct priv *) dev->priv;
  628. if(debuglevel > 0)
  629. printk("R");
  630. for(;(status = p->rfd_top->stat_high) & RFD_COMPL;)
  631. {
  632. rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
  633. if(status & RFD_OK) /* frame received without error? */
  634. {
  635. if( (totlen = swab16(rbd->status)) & RBD_LAST) /* the first and the last buffer? */
  636. {
  637. totlen &= RBD_MASK; /* length of this frame */
  638. rbd->status = 0;
  639. skb = (struct sk_buff *) dev_alloc_skb(totlen+2);
  640. if(skb != NULL)
  641. {
  642. skb->dev = dev;
  643. skb_reserve(skb,2);
  644. skb_put(skb,totlen);
  645. eth_copy_and_sum(skb,(char *) p->base+swab32((unsigned long) rbd->buffer),totlen,0);
  646. skb->protocol=eth_type_trans(skb,dev);
  647. netif_rx(skb);
  648. p->stats.rx_packets++;
  649. }
  650. else
  651. p->stats.rx_dropped++;
  652. }
  653. else
  654. {
  655. int rstat;
  656. /* free all RBD's until RBD_LAST is set */
  657. totlen = 0;
  658. while(!((rstat=swab16(rbd->status)) & RBD_LAST))
  659. {
  660. totlen += rstat & RBD_MASK;
  661. if(!rstat)
  662. {
  663. printk("%s: Whoops .. no end mark in RBD list\n",dev->name);
  664. break;
  665. }
  666. rbd->status = 0;
  667. rbd = (struct rbd_struct *) make32(rbd->next);
  668. }
  669. totlen += rstat & RBD_MASK;
  670. rbd->status = 0;
  671. printk("%s: received oversized frame! length: %d\n",dev->name,totlen);
  672. p->stats.rx_dropped++;
  673. }
  674. }
  675. else /* frame !(ok), only with 'save-bad-frames' */
  676. {
  677. printk("%s: oops! rfd-error-status: %04x\n",dev->name,status);
  678. p->stats.rx_errors++;
  679. }
  680. p->rfd_top->stat_high = 0;
  681. p->rfd_top->last = RFD_SUSP; /* maybe exchange by RFD_LAST */
  682. p->rfd_top->rbd_offset = 0xffff;
  683. p->rfd_last->last = 0; /* delete RFD_SUSP */
  684. p->rfd_last = p->rfd_top;
  685. p->rfd_top = (struct rfd_struct *) make32(p->rfd_top->next); /* step to next RFD */
  686. p->scb->rfa_offset = make16(p->rfd_top);
  687. if(debuglevel > 0)
  688. printk("%d",cnt++);
  689. }
  690. if(automatic_resume)
  691. {
  692. WAIT_4_SCB_CMD();
  693. p->scb->cmd_ruc = RUC_RESUME;
  694. sun3_attn586();
  695. WAIT_4_SCB_CMD_RUC();
  696. }
  697. #ifdef WAIT_4_BUSY
  698. {
  699. int i;
  700. for(i=0;i<1024;i++)
  701. {
  702. if(p->rfd_top->status)
  703. break;
  704. DELAY_16();
  705. if(i == 1023)
  706. printk("%s: RU hasn't fetched next RFD (not busy/complete)\n",dev->name);
  707. }
  708. }
  709. #endif
  710. #if 0
  711. if(!at_least_one)
  712. {
  713. int i;
  714. volatile struct rfd_struct *rfds=p->rfd_top;
  715. volatile struct rbd_struct *rbds;
  716. printk("%s: received a FC intr. without having a frame: %04x %d\n",dev->name,status,old_at_least);
  717. for(i=0;i< (p->num_recv_buffs+4);i++)
  718. {
  719. rbds = (struct rbd_struct *) make32(rfds->rbd_offset);
  720. printk("%04x:%04x ",rfds->status,rbds->status);
  721. rfds = (struct rfd_struct *) make32(rfds->next);
  722. }
  723. printk("\nerrs: %04x %04x stat: %04x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->status);
  724. printk("\nerrs: %04x %04x rus: %02x, cus: %02x\n",(int)p->scb->rsc_errs,(int)p->scb->ovrn_errs,(int)p->scb->rus,(int)p->scb->cus);
  725. }
  726. old_at_least = at_least_one;
  727. #endif
  728. if(debuglevel > 0)
  729. printk("r");
  730. }
  731. /**********************************************************
  732. * handle 'Receiver went not ready'.
  733. */
  734. static void sun3_82586_rnr_int(struct net_device *dev)
  735. {
  736. struct priv *p = (struct priv *) dev->priv;
  737. p->stats.rx_errors++;
  738. WAIT_4_SCB_CMD(); /* wait for the last cmd, WAIT_4_FULLSTAT?? */
  739. p->scb->cmd_ruc = RUC_ABORT; /* usually the RU is in the 'no resource'-state .. abort it now. */
  740. sun3_attn586();
  741. WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. */
  742. alloc_rfa(dev,(char *)p->rfd_first);
  743. /* maybe add a check here, before restarting the RU */
  744. startrecv586(dev); /* restart RU */
  745. printk("%s: Receive-Unit restarted. Status: %04x\n",dev->name,p->scb->rus);
  746. }
  747. /**********************************************************
  748. * handle xmit - interrupt
  749. */
  750. static void sun3_82586_xmt_int(struct net_device *dev)
  751. {
  752. int status;
  753. struct priv *p = (struct priv *) dev->priv;
  754. if(debuglevel > 0)
  755. printk("X");
  756. status = swab16(p->xmit_cmds[p->xmit_last]->cmd_status);
  757. if(!(status & STAT_COMPL))
  758. printk("%s: strange .. xmit-int without a 'COMPLETE'\n",dev->name);
  759. if(status & STAT_OK)
  760. {
  761. p->stats.tx_packets++;
  762. p->stats.collisions += (status & TCMD_MAXCOLLMASK);
  763. }
  764. else
  765. {
  766. p->stats.tx_errors++;
  767. if(status & TCMD_LATECOLL) {
  768. printk("%s: late collision detected.\n",dev->name);
  769. p->stats.collisions++;
  770. }
  771. else if(status & TCMD_NOCARRIER) {
  772. p->stats.tx_carrier_errors++;
  773. printk("%s: no carrier detected.\n",dev->name);
  774. }
  775. else if(status & TCMD_LOSTCTS)
  776. printk("%s: loss of CTS detected.\n",dev->name);
  777. else if(status & TCMD_UNDERRUN) {
  778. p->stats.tx_fifo_errors++;
  779. printk("%s: DMA underrun detected.\n",dev->name);
  780. }
  781. else if(status & TCMD_MAXCOLL) {
  782. printk("%s: Max. collisions exceeded.\n",dev->name);
  783. p->stats.collisions += 16;
  784. }
  785. }
  786. #if (NUM_XMIT_BUFFS > 1)
  787. if( (++p->xmit_last) == NUM_XMIT_BUFFS)
  788. p->xmit_last = 0;
  789. #endif
  790. netif_wake_queue(dev);
  791. }
  792. /***********************************************************
  793. * (re)start the receiver
  794. */
  795. static void startrecv586(struct net_device *dev)
  796. {
  797. struct priv *p = (struct priv *) dev->priv;
  798. WAIT_4_SCB_CMD();
  799. WAIT_4_SCB_CMD_RUC();
  800. p->scb->rfa_offset = make16(p->rfd_first);
  801. p->scb->cmd_ruc = RUC_START;
  802. sun3_attn586(); /* start cmd. */
  803. WAIT_4_SCB_CMD_RUC(); /* wait for accept cmd. (no timeout!!) */
  804. }
  805. static void sun3_82586_timeout(struct net_device *dev)
  806. {
  807. struct priv *p = (struct priv *) dev->priv;
  808. #ifndef NO_NOPCOMMANDS
  809. if(p->scb->cus & CU_ACTIVE) /* COMMAND-UNIT active? */
  810. {
  811. netif_wake_queue(dev);
  812. #ifdef DEBUG
  813. printk("%s: strange ... timeout with CU active?!?\n",dev->name);
  814. printk("%s: X0: %04x N0: %04x N1: %04x %d\n",dev->name,(int)swab16(p->xmit_cmds[0]->cmd_status),(int)swab16(p->nop_cmds[0]->cmd_status),(int)swab16(p->nop_cmds[1]->cmd_status),(int)p->nop_point);
  815. #endif
  816. p->scb->cmd_cuc = CUC_ABORT;
  817. sun3_attn586();
  818. WAIT_4_SCB_CMD();
  819. p->scb->cbl_offset = make16(p->nop_cmds[p->nop_point]);
  820. p->scb->cmd_cuc = CUC_START;
  821. sun3_attn586();
  822. WAIT_4_SCB_CMD();
  823. dev->trans_start = jiffies;
  824. return 0;
  825. }
  826. #endif
  827. {
  828. #ifdef DEBUG
  829. printk("%s: xmitter timed out, try to restart! stat: %02x\n",dev->name,p->scb->cus);
  830. printk("%s: command-stats: %04x %04x\n",dev->name,swab16(p->xmit_cmds[0]->cmd_status),swab16(p->xmit_cmds[1]->cmd_status));
  831. printk("%s: check, whether you set the right interrupt number!\n",dev->name);
  832. #endif
  833. sun3_82586_close(dev);
  834. sun3_82586_open(dev);
  835. }
  836. dev->trans_start = jiffies;
  837. }
  838. /******************************************************
  839. * send frame
  840. */
  841. static int sun3_82586_send_packet(struct sk_buff *skb, struct net_device *dev)
  842. {
  843. int len,i;
  844. #ifndef NO_NOPCOMMANDS
  845. int next_nop;
  846. #endif
  847. struct priv *p = (struct priv *) dev->priv;
  848. if(skb->len > XMIT_BUFF_SIZE)
  849. {
  850. printk("%s: Sorry, max. framelength is %d bytes. The length of your frame is %d bytes.\n",dev->name,XMIT_BUFF_SIZE,skb->len);
  851. return 0;
  852. }
  853. netif_stop_queue(dev);
  854. #if(NUM_XMIT_BUFFS > 1)
  855. if(test_and_set_bit(0,(void *) &p->lock)) {
  856. printk("%s: Queue was locked\n",dev->name);
  857. return 1;
  858. }
  859. else
  860. #endif
  861. {
  862. len = skb->len;
  863. if (len < ETH_ZLEN) {
  864. memset((char *)p->xmit_cbuffs[p->xmit_count], 0, ETH_ZLEN);
  865. len = ETH_ZLEN;
  866. }
  867. memcpy((char *)p->xmit_cbuffs[p->xmit_count],(char *)(skb->data),skb->len);
  868. #if (NUM_XMIT_BUFFS == 1)
  869. # ifdef NO_NOPCOMMANDS
  870. #ifdef DEBUG
  871. if(p->scb->cus & CU_ACTIVE)
  872. {
  873. printk("%s: Hmmm .. CU is still running and we wanna send a new packet.\n",dev->name);
  874. printk("%s: stat: %04x %04x\n",dev->name,p->scb->cus,swab16(p->xmit_cmds[0]->cmd_status));
  875. }
  876. #endif
  877. p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
  878. for(i=0;i<16;i++)
  879. {
  880. p->xmit_cmds[0]->cmd_status = 0;
  881. WAIT_4_SCB_CMD();
  882. if( (p->scb->cus & CU_STATUS) == CU_SUSPEND)
  883. p->scb->cmd_cuc = CUC_RESUME;
  884. else
  885. {
  886. p->scb->cbl_offset = make16(p->xmit_cmds[0]);
  887. p->scb->cmd_cuc = CUC_START;
  888. }
  889. sun3_attn586();
  890. dev->trans_start = jiffies;
  891. if(!i)
  892. dev_kfree_skb(skb);
  893. WAIT_4_SCB_CMD();
  894. if( (p->scb->cus & CU_ACTIVE)) /* test it, because CU sometimes doesn't start immediately */
  895. break;
  896. if(p->xmit_cmds[0]->cmd_status)
  897. break;
  898. if(i==15)
  899. printk("%s: Can't start transmit-command.\n",dev->name);
  900. }
  901. # else
  902. next_nop = (p->nop_point + 1) & 0x1;
  903. p->xmit_buffs[0]->size = swab16(TBD_LAST | len);
  904. p->xmit_cmds[0]->cmd_link = p->nop_cmds[next_nop]->cmd_link
  905. = make16((p->nop_cmds[next_nop]));
  906. p->xmit_cmds[0]->cmd_status = p->nop_cmds[next_nop]->cmd_status = 0;
  907. p->nop_cmds[p->nop_point]->cmd_link = make16((p->xmit_cmds[0]));
  908. dev->trans_start = jiffies;
  909. p->nop_point = next_nop;
  910. dev_kfree_skb(skb);
  911. # endif
  912. #else
  913. p->xmit_buffs[p->xmit_count]->size = swab16(TBD_LAST | len);
  914. if( (next_nop = p->xmit_count + 1) == NUM_XMIT_BUFFS )
  915. next_nop = 0;
  916. p->xmit_cmds[p->xmit_count]->cmd_status = 0;
  917. /* linkpointer of xmit-command already points to next nop cmd */
  918. p->nop_cmds[next_nop]->cmd_link = make16((p->nop_cmds[next_nop]));
  919. p->nop_cmds[next_nop]->cmd_status = 0;
  920. p->nop_cmds[p->xmit_count]->cmd_link = make16((p->xmit_cmds[p->xmit_count]));
  921. dev->trans_start = jiffies;
  922. p->xmit_count = next_nop;
  923. {
  924. unsigned long flags;
  925. local_irq_save(flags);
  926. if(p->xmit_count != p->xmit_last)
  927. netif_wake_queue(dev);
  928. p->lock = 0;
  929. local_irq_restore(flags);
  930. }
  931. dev_kfree_skb(skb);
  932. #endif
  933. }
  934. return 0;
  935. }
  936. /*******************************************
  937. * Someone wanna have the statistics
  938. */
  939. static struct net_device_stats *sun3_82586_get_stats(struct net_device *dev)
  940. {
  941. struct priv *p = (struct priv *) dev->priv;
  942. unsigned short crc,aln,rsc,ovrn;
  943. crc = swab16(p->scb->crc_errs); /* get error-statistic from the ni82586 */
  944. p->scb->crc_errs = 0;
  945. aln = swab16(p->scb->aln_errs);
  946. p->scb->aln_errs = 0;
  947. rsc = swab16(p->scb->rsc_errs);
  948. p->scb->rsc_errs = 0;
  949. ovrn = swab16(p->scb->ovrn_errs);
  950. p->scb->ovrn_errs = 0;
  951. p->stats.rx_crc_errors += crc;
  952. p->stats.rx_fifo_errors += ovrn;
  953. p->stats.rx_frame_errors += aln;
  954. p->stats.rx_dropped += rsc;
  955. return &p->stats;
  956. }
  957. /********************************************************
  958. * Set MC list ..
  959. */
  960. static void set_multicast_list(struct net_device *dev)
  961. {
  962. netif_stop_queue(dev);
  963. sun3_disint();
  964. alloc586(dev);
  965. init586(dev);
  966. startrecv586(dev);
  967. sun3_enaint();
  968. netif_wake_queue(dev);
  969. }
  970. #ifdef MODULE
  971. #error This code is not currently supported as a module
  972. static struct net_device *dev_sun3_82586;
  973. int init_module(void)
  974. {
  975. dev_sun3_82586 = sun3_82586_probe(-1);
  976. if (IS_ERR(dev_sun3_82586))
  977. return PTR_ERR(dev_sun3_82586);
  978. return 0;
  979. }
  980. void cleanup_module(void)
  981. {
  982. unsigned long ioaddr = dev_sun3_82586->base_addr;
  983. unregister_netdev(dev_sun3_82586);
  984. release_region(ioaddr, SUN3_82586_TOTAL_SIZE);
  985. iounmap((void *)ioaddr);
  986. free_netdev(dev_sun3_82586);
  987. }
  988. #endif /* MODULE */
  989. #if 0
  990. /*
  991. * DUMP .. we expect a not running CMD unit and enough space
  992. */
  993. void sun3_82586_dump(struct net_device *dev,void *ptr)
  994. {
  995. struct priv *p = (struct priv *) dev->priv;
  996. struct dump_cmd_struct *dump_cmd = (struct dump_cmd_struct *) ptr;
  997. int i;
  998. p->scb->cmd_cuc = CUC_ABORT;
  999. sun3_attn586();
  1000. WAIT_4_SCB_CMD();
  1001. WAIT_4_SCB_CMD_RUC();
  1002. dump_cmd->cmd_status = 0;
  1003. dump_cmd->cmd_cmd = CMD_DUMP | CMD_LAST;
  1004. dump_cmd->dump_offset = make16((dump_cmd + 1));
  1005. dump_cmd->cmd_link = 0xffff;
  1006. p->scb->cbl_offset = make16(dump_cmd);
  1007. p->scb->cmd_cuc = CUC_START;
  1008. sun3_attn586();
  1009. WAIT_4_STAT_COMPL(dump_cmd);
  1010. if( (dump_cmd->cmd_status & (STAT_COMPL|STAT_OK)) != (STAT_COMPL|STAT_OK) )
  1011. printk("%s: Can't get dump information.\n",dev->name);
  1012. for(i=0;i<170;i++) {
  1013. printk("%02x ",(int) ((unsigned char *) (dump_cmd + 1))[i]);
  1014. if(i % 24 == 23)
  1015. printk("\n");
  1016. }
  1017. printk("\n");
  1018. }
  1019. #endif
  1020. MODULE_LICENSE("GPL");