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1da177e4 LT |
1 | /* |
2 | * File Name: | |
3 | * skfddi.c | |
4 | * | |
5 | * Copyright Information: | |
6 | * Copyright SysKonnect 1998,1999. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * The information in this file is provided "AS IS" without warranty. | |
14 | * | |
15 | * Abstract: | |
16 | * A Linux device driver supporting the SysKonnect FDDI PCI controller | |
17 | * familie. | |
18 | * | |
19 | * Maintainers: | |
20 | * CG Christoph Goos (cgoos@syskonnect.de) | |
21 | * | |
22 | * Contributors: | |
23 | * DM David S. Miller | |
24 | * | |
25 | * Address all question to: | |
26 | * linux@syskonnect.de | |
27 | * | |
28 | * The technical manual for the adapters is available from SysKonnect's | |
29 | * web pages: www.syskonnect.com | |
30 | * Goto "Support" and search Knowledge Base for "manual". | |
31 | * | |
32 | * Driver Architecture: | |
33 | * The driver architecture is based on the DEC FDDI driver by | |
34 | * Lawrence V. Stefani and several ethernet drivers. | |
35 | * I also used an existing Windows NT miniport driver. | |
36 | * All hardware dependent fuctions are handled by the SysKonnect | |
37 | * Hardware Module. | |
38 | * The only headerfiles that are directly related to this source | |
39 | * are skfddi.c, h/types.h, h/osdef1st.h, h/targetos.h. | |
40 | * The others belong to the SysKonnect FDDI Hardware Module and | |
41 | * should better not be changed. | |
42 | * | |
43 | * Modification History: | |
44 | * Date Name Description | |
45 | * 02-Mar-98 CG Created. | |
46 | * | |
47 | * 10-Mar-99 CG Support for 2.2.x added. | |
48 | * 25-Mar-99 CG Corrected IRQ routing for SMP (APIC) | |
49 | * 26-Oct-99 CG Fixed compilation error on 2.2.13 | |
50 | * 12-Nov-99 CG Source code release | |
51 | * 22-Nov-99 CG Included in kernel source. | |
52 | * 07-May-00 DM 64 bit fixes, new dma interface | |
53 | * 31-Jul-03 DB Audit copy_*_user in skfp_ioctl | |
54 | * Daniele Bellucci <bellucda@tiscali.it> | |
55 | * 03-Dec-03 SH Convert to PCI device model | |
56 | * | |
57 | * Compilation options (-Dxxx): | |
58 | * DRIVERDEBUG print lots of messages to log file | |
59 | * DUMPPACKETS print received/transmitted packets to logfile | |
60 | * | |
61 | * Tested cpu architectures: | |
62 | * - i386 | |
63 | * - sparc64 | |
64 | */ | |
65 | ||
66 | /* Version information string - should be updated prior to */ | |
67 | /* each new release!!! */ | |
68 | #define VERSION "2.07" | |
69 | ||
70 | static const char *boot_msg = | |
71 | "SysKonnect FDDI PCI Adapter driver v" VERSION " for\n" | |
72 | " SK-55xx/SK-58xx adapters (SK-NET FDDI-FP/UP/LP)"; | |
73 | ||
74 | /* Include files */ | |
75 | ||
76 | #include <linux/module.h> | |
77 | #include <linux/kernel.h> | |
78 | #include <linux/errno.h> | |
79 | #include <linux/ioport.h> | |
80 | #include <linux/slab.h> | |
81 | #include <linux/interrupt.h> | |
82 | #include <linux/pci.h> | |
83 | #include <linux/netdevice.h> | |
84 | #include <linux/fddidevice.h> | |
85 | #include <linux/skbuff.h> | |
86 | #include <linux/bitops.h> | |
87 | ||
88 | #include <asm/byteorder.h> | |
89 | #include <asm/io.h> | |
90 | #include <asm/uaccess.h> | |
91 | ||
92 | #include "h/types.h" | |
93 | #undef ADDR // undo Linux definition | |
94 | #include "h/skfbi.h" | |
95 | #include "h/fddi.h" | |
96 | #include "h/smc.h" | |
97 | #include "h/smtstate.h" | |
98 | ||
99 | ||
100 | // Define module-wide (static) routines | |
101 | static int skfp_driver_init(struct net_device *dev); | |
102 | static int skfp_open(struct net_device *dev); | |
103 | static int skfp_close(struct net_device *dev); | |
104 | static irqreturn_t skfp_interrupt(int irq, void *dev_id, struct pt_regs *regs); | |
105 | static struct net_device_stats *skfp_ctl_get_stats(struct net_device *dev); | |
106 | static void skfp_ctl_set_multicast_list(struct net_device *dev); | |
107 | static void skfp_ctl_set_multicast_list_wo_lock(struct net_device *dev); | |
108 | static int skfp_ctl_set_mac_address(struct net_device *dev, void *addr); | |
109 | static int skfp_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
110 | static int skfp_send_pkt(struct sk_buff *skb, struct net_device *dev); | |
111 | static void send_queued_packets(struct s_smc *smc); | |
112 | static void CheckSourceAddress(unsigned char *frame, unsigned char *hw_addr); | |
113 | static void ResetAdapter(struct s_smc *smc); | |
114 | ||
115 | ||
116 | // Functions needed by the hardware module | |
117 | void *mac_drv_get_space(struct s_smc *smc, u_int size); | |
118 | void *mac_drv_get_desc_mem(struct s_smc *smc, u_int size); | |
119 | unsigned long mac_drv_virt2phys(struct s_smc *smc, void *virt); | |
120 | unsigned long dma_master(struct s_smc *smc, void *virt, int len, int flag); | |
121 | void dma_complete(struct s_smc *smc, volatile union s_fp_descr *descr, | |
122 | int flag); | |
123 | void mac_drv_tx_complete(struct s_smc *smc, volatile struct s_smt_fp_txd *txd); | |
124 | void llc_restart_tx(struct s_smc *smc); | |
125 | void mac_drv_rx_complete(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, | |
126 | int frag_count, int len); | |
127 | void mac_drv_requeue_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, | |
128 | int frag_count); | |
129 | void mac_drv_fill_rxd(struct s_smc *smc); | |
130 | void mac_drv_clear_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, | |
131 | int frag_count); | |
132 | int mac_drv_rx_init(struct s_smc *smc, int len, int fc, char *look_ahead, | |
133 | int la_len); | |
134 | void dump_data(unsigned char *Data, int length); | |
135 | ||
136 | // External functions from the hardware module | |
137 | extern u_int mac_drv_check_space(void); | |
138 | extern void read_address(struct s_smc *smc, u_char * mac_addr); | |
139 | extern void card_stop(struct s_smc *smc); | |
140 | extern int mac_drv_init(struct s_smc *smc); | |
141 | extern void hwm_tx_frag(struct s_smc *smc, char far * virt, u_long phys, | |
142 | int len, int frame_status); | |
143 | extern int hwm_tx_init(struct s_smc *smc, u_char fc, int frag_count, | |
144 | int frame_len, int frame_status); | |
145 | extern int init_smt(struct s_smc *smc, u_char * mac_addr); | |
146 | extern void fddi_isr(struct s_smc *smc); | |
147 | extern void hwm_rx_frag(struct s_smc *smc, char far * virt, u_long phys, | |
148 | int len, int frame_status); | |
149 | extern void mac_drv_rx_mode(struct s_smc *smc, int mode); | |
150 | extern void mac_drv_clear_rx_queue(struct s_smc *smc); | |
151 | extern void enable_tx_irq(struct s_smc *smc, u_short queue); | |
152 | extern void mac_drv_clear_txd(struct s_smc *smc); | |
153 | ||
154 | static struct pci_device_id skfddi_pci_tbl[] = { | |
155 | { PCI_VENDOR_ID_SK, PCI_DEVICE_ID_SK_FP, PCI_ANY_ID, PCI_ANY_ID, }, | |
156 | { } /* Terminating entry */ | |
157 | }; | |
158 | MODULE_DEVICE_TABLE(pci, skfddi_pci_tbl); | |
159 | MODULE_LICENSE("GPL"); | |
160 | MODULE_AUTHOR("Mirko Lindner <mlindner@syskonnect.de>"); | |
161 | ||
162 | // Define module-wide (static) variables | |
163 | ||
164 | static int num_boards; /* total number of adapters configured */ | |
165 | ||
166 | #ifdef DRIVERDEBUG | |
167 | #define PRINTK(s, args...) printk(s, ## args) | |
168 | #else | |
169 | #define PRINTK(s, args...) | |
170 | #endif // DRIVERDEBUG | |
171 | ||
172 | /* | |
173 | * ================= | |
174 | * = skfp_init_one = | |
175 | * ================= | |
176 | * | |
177 | * Overview: | |
178 | * Probes for supported FDDI PCI controllers | |
179 | * | |
180 | * Returns: | |
181 | * Condition code | |
182 | * | |
183 | * Arguments: | |
184 | * pdev - pointer to PCI device information | |
185 | * | |
186 | * Functional Description: | |
187 | * This is now called by PCI driver registration process | |
188 | * for each board found. | |
189 | * | |
190 | * Return Codes: | |
191 | * 0 - This device (fddi0, fddi1, etc) configured successfully | |
192 | * -ENODEV - No devices present, or no SysKonnect FDDI PCI device | |
193 | * present for this device name | |
194 | * | |
195 | * | |
196 | * Side Effects: | |
197 | * Device structures for FDDI adapters (fddi0, fddi1, etc) are | |
198 | * initialized and the board resources are read and stored in | |
199 | * the device structure. | |
200 | */ | |
201 | static int skfp_init_one(struct pci_dev *pdev, | |
202 | const struct pci_device_id *ent) | |
203 | { | |
204 | struct net_device *dev; | |
205 | struct s_smc *smc; /* board pointer */ | |
206 | void __iomem *mem; | |
207 | int err; | |
208 | ||
209 | PRINTK(KERN_INFO "entering skfp_init_one\n"); | |
210 | ||
211 | if (num_boards == 0) | |
212 | printk("%s\n", boot_msg); | |
213 | ||
214 | err = pci_enable_device(pdev); | |
215 | if (err) | |
216 | return err; | |
217 | ||
218 | err = pci_request_regions(pdev, "skfddi"); | |
219 | if (err) | |
220 | goto err_out1; | |
221 | ||
222 | pci_set_master(pdev); | |
223 | ||
224 | #ifdef MEM_MAPPED_IO | |
225 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { | |
226 | printk(KERN_ERR "skfp: region is not an MMIO resource\n"); | |
227 | err = -EIO; | |
228 | goto err_out2; | |
229 | } | |
230 | ||
231 | mem = ioremap(pci_resource_start(pdev, 0), 0x4000); | |
232 | #else | |
233 | if (!(pci_resource_flags(pdev, 1) & IO_RESOURCE_IO)) { | |
234 | printk(KERN_ERR "skfp: region is not PIO resource\n"); | |
235 | err = -EIO; | |
236 | goto err_out2; | |
237 | } | |
238 | ||
239 | mem = ioport_map(pci_resource_start(pdev, 1), FP_IO_LEN); | |
240 | #endif | |
241 | if (!mem) { | |
242 | printk(KERN_ERR "skfp: Unable to map register, " | |
243 | "FDDI adapter will be disabled.\n"); | |
244 | err = -EIO; | |
245 | goto err_out2; | |
246 | } | |
247 | ||
248 | dev = alloc_fddidev(sizeof(struct s_smc)); | |
249 | if (!dev) { | |
250 | printk(KERN_ERR "skfp: Unable to allocate fddi device, " | |
251 | "FDDI adapter will be disabled.\n"); | |
252 | err = -ENOMEM; | |
253 | goto err_out3; | |
254 | } | |
255 | ||
256 | dev->irq = pdev->irq; | |
257 | dev->get_stats = &skfp_ctl_get_stats; | |
258 | dev->open = &skfp_open; | |
259 | dev->stop = &skfp_close; | |
260 | dev->hard_start_xmit = &skfp_send_pkt; | |
261 | dev->set_multicast_list = &skfp_ctl_set_multicast_list; | |
262 | dev->set_mac_address = &skfp_ctl_set_mac_address; | |
263 | dev->do_ioctl = &skfp_ioctl; | |
264 | dev->header_cache_update = NULL; /* not supported */ | |
265 | ||
266 | SET_MODULE_OWNER(dev); | |
267 | SET_NETDEV_DEV(dev, &pdev->dev); | |
268 | ||
269 | /* Initialize board structure with bus-specific info */ | |
270 | smc = netdev_priv(dev); | |
271 | smc->os.dev = dev; | |
272 | smc->os.bus_type = SK_BUS_TYPE_PCI; | |
273 | smc->os.pdev = *pdev; | |
274 | smc->os.QueueSkb = MAX_TX_QUEUE_LEN; | |
275 | smc->os.MaxFrameSize = MAX_FRAME_SIZE; | |
276 | smc->os.dev = dev; | |
277 | smc->hw.slot = -1; | |
278 | smc->hw.iop = mem; | |
279 | smc->os.ResetRequested = FALSE; | |
280 | skb_queue_head_init(&smc->os.SendSkbQueue); | |
281 | ||
282 | dev->base_addr = (unsigned long)mem; | |
283 | ||
284 | err = skfp_driver_init(dev); | |
285 | if (err) | |
286 | goto err_out4; | |
287 | ||
288 | err = register_netdev(dev); | |
289 | if (err) | |
290 | goto err_out5; | |
291 | ||
292 | ++num_boards; | |
293 | pci_set_drvdata(pdev, dev); | |
294 | ||
295 | if ((pdev->subsystem_device & 0xff00) == 0x5500 || | |
296 | (pdev->subsystem_device & 0xff00) == 0x5800) | |
297 | printk("%s: SysKonnect FDDI PCI adapter" | |
298 | " found (SK-%04X)\n", dev->name, | |
299 | pdev->subsystem_device); | |
300 | else | |
301 | printk("%s: FDDI PCI adapter found\n", dev->name); | |
302 | ||
303 | return 0; | |
304 | err_out5: | |
305 | if (smc->os.SharedMemAddr) | |
306 | pci_free_consistent(pdev, smc->os.SharedMemSize, | |
307 | smc->os.SharedMemAddr, | |
308 | smc->os.SharedMemDMA); | |
309 | pci_free_consistent(pdev, MAX_FRAME_SIZE, | |
310 | smc->os.LocalRxBuffer, smc->os.LocalRxBufferDMA); | |
311 | err_out4: | |
312 | free_netdev(dev); | |
313 | err_out3: | |
314 | #ifdef MEM_MAPPED_IO | |
315 | iounmap(mem); | |
316 | #else | |
317 | ioport_unmap(mem); | |
318 | #endif | |
319 | err_out2: | |
320 | pci_release_regions(pdev); | |
321 | err_out1: | |
322 | pci_disable_device(pdev); | |
323 | return err; | |
324 | } | |
325 | ||
326 | /* | |
327 | * Called for each adapter board from pci_unregister_driver | |
328 | */ | |
329 | static void __devexit skfp_remove_one(struct pci_dev *pdev) | |
330 | { | |
331 | struct net_device *p = pci_get_drvdata(pdev); | |
332 | struct s_smc *lp = netdev_priv(p); | |
333 | ||
334 | unregister_netdev(p); | |
335 | ||
336 | if (lp->os.SharedMemAddr) { | |
337 | pci_free_consistent(&lp->os.pdev, | |
338 | lp->os.SharedMemSize, | |
339 | lp->os.SharedMemAddr, | |
340 | lp->os.SharedMemDMA); | |
341 | lp->os.SharedMemAddr = NULL; | |
342 | } | |
343 | if (lp->os.LocalRxBuffer) { | |
344 | pci_free_consistent(&lp->os.pdev, | |
345 | MAX_FRAME_SIZE, | |
346 | lp->os.LocalRxBuffer, | |
347 | lp->os.LocalRxBufferDMA); | |
348 | lp->os.LocalRxBuffer = NULL; | |
349 | } | |
350 | #ifdef MEM_MAPPED_IO | |
351 | iounmap(lp->hw.iop); | |
352 | #else | |
353 | ioport_unmap(lp->hw.iop); | |
354 | #endif | |
355 | pci_release_regions(pdev); | |
356 | free_netdev(p); | |
357 | ||
358 | pci_disable_device(pdev); | |
359 | pci_set_drvdata(pdev, NULL); | |
360 | } | |
361 | ||
362 | /* | |
363 | * ==================== | |
364 | * = skfp_driver_init = | |
365 | * ==================== | |
366 | * | |
367 | * Overview: | |
368 | * Initializes remaining adapter board structure information | |
369 | * and makes sure adapter is in a safe state prior to skfp_open(). | |
370 | * | |
371 | * Returns: | |
372 | * Condition code | |
373 | * | |
374 | * Arguments: | |
375 | * dev - pointer to device information | |
376 | * | |
377 | * Functional Description: | |
378 | * This function allocates additional resources such as the host memory | |
379 | * blocks needed by the adapter. | |
380 | * The adapter is also reset. The OS must call skfp_open() to open | |
381 | * the adapter and bring it on-line. | |
382 | * | |
383 | * Return Codes: | |
384 | * 0 - initialization succeeded | |
385 | * -1 - initialization failed | |
386 | */ | |
387 | static int skfp_driver_init(struct net_device *dev) | |
388 | { | |
389 | struct s_smc *smc = netdev_priv(dev); | |
390 | skfddi_priv *bp = &smc->os; | |
391 | int err = -EIO; | |
392 | ||
393 | PRINTK(KERN_INFO "entering skfp_driver_init\n"); | |
394 | ||
395 | // set the io address in private structures | |
396 | bp->base_addr = dev->base_addr; | |
397 | ||
398 | // Get the interrupt level from the PCI Configuration Table | |
399 | smc->hw.irq = dev->irq; | |
400 | ||
401 | spin_lock_init(&bp->DriverLock); | |
402 | ||
403 | // Allocate invalid frame | |
404 | bp->LocalRxBuffer = pci_alloc_consistent(&bp->pdev, MAX_FRAME_SIZE, &bp->LocalRxBufferDMA); | |
405 | if (!bp->LocalRxBuffer) { | |
406 | printk("could not allocate mem for "); | |
407 | printk("LocalRxBuffer: %d byte\n", MAX_FRAME_SIZE); | |
408 | goto fail; | |
409 | } | |
410 | ||
411 | // Determine the required size of the 'shared' memory area. | |
412 | bp->SharedMemSize = mac_drv_check_space(); | |
413 | PRINTK(KERN_INFO "Memory for HWM: %ld\n", bp->SharedMemSize); | |
414 | if (bp->SharedMemSize > 0) { | |
415 | bp->SharedMemSize += 16; // for descriptor alignment | |
416 | ||
417 | bp->SharedMemAddr = pci_alloc_consistent(&bp->pdev, | |
418 | bp->SharedMemSize, | |
419 | &bp->SharedMemDMA); | |
420 | if (!bp->SharedMemSize) { | |
421 | printk("could not allocate mem for "); | |
422 | printk("hardware module: %ld byte\n", | |
423 | bp->SharedMemSize); | |
424 | goto fail; | |
425 | } | |
426 | bp->SharedMemHeap = 0; // Nothing used yet. | |
427 | ||
428 | } else { | |
429 | bp->SharedMemAddr = NULL; | |
430 | bp->SharedMemHeap = 0; | |
431 | } // SharedMemSize > 0 | |
432 | ||
433 | memset(bp->SharedMemAddr, 0, bp->SharedMemSize); | |
434 | ||
435 | card_stop(smc); // Reset adapter. | |
436 | ||
437 | PRINTK(KERN_INFO "mac_drv_init()..\n"); | |
438 | if (mac_drv_init(smc) != 0) { | |
439 | PRINTK(KERN_INFO "mac_drv_init() failed.\n"); | |
440 | goto fail; | |
441 | } | |
442 | read_address(smc, NULL); | |
443 | PRINTK(KERN_INFO "HW-Addr: %02x %02x %02x %02x %02x %02x\n", | |
444 | smc->hw.fddi_canon_addr.a[0], | |
445 | smc->hw.fddi_canon_addr.a[1], | |
446 | smc->hw.fddi_canon_addr.a[2], | |
447 | smc->hw.fddi_canon_addr.a[3], | |
448 | smc->hw.fddi_canon_addr.a[4], | |
449 | smc->hw.fddi_canon_addr.a[5]); | |
450 | memcpy(dev->dev_addr, smc->hw.fddi_canon_addr.a, 6); | |
451 | ||
452 | smt_reset_defaults(smc, 0); | |
453 | ||
454 | return (0); | |
455 | ||
456 | fail: | |
457 | if (bp->SharedMemAddr) { | |
458 | pci_free_consistent(&bp->pdev, | |
459 | bp->SharedMemSize, | |
460 | bp->SharedMemAddr, | |
461 | bp->SharedMemDMA); | |
462 | bp->SharedMemAddr = NULL; | |
463 | } | |
464 | if (bp->LocalRxBuffer) { | |
465 | pci_free_consistent(&bp->pdev, MAX_FRAME_SIZE, | |
466 | bp->LocalRxBuffer, bp->LocalRxBufferDMA); | |
467 | bp->LocalRxBuffer = NULL; | |
468 | } | |
469 | return err; | |
470 | } // skfp_driver_init | |
471 | ||
472 | ||
473 | /* | |
474 | * ============= | |
475 | * = skfp_open = | |
476 | * ============= | |
477 | * | |
478 | * Overview: | |
479 | * Opens the adapter | |
480 | * | |
481 | * Returns: | |
482 | * Condition code | |
483 | * | |
484 | * Arguments: | |
485 | * dev - pointer to device information | |
486 | * | |
487 | * Functional Description: | |
488 | * This function brings the adapter to an operational state. | |
489 | * | |
490 | * Return Codes: | |
491 | * 0 - Adapter was successfully opened | |
492 | * -EAGAIN - Could not register IRQ | |
493 | */ | |
494 | static int skfp_open(struct net_device *dev) | |
495 | { | |
496 | struct s_smc *smc = netdev_priv(dev); | |
497 | int err; | |
498 | ||
499 | PRINTK(KERN_INFO "entering skfp_open\n"); | |
500 | /* Register IRQ - support shared interrupts by passing device ptr */ | |
501 | err = request_irq(dev->irq, (void *) skfp_interrupt, SA_SHIRQ, | |
502 | dev->name, dev); | |
503 | if (err) | |
504 | return err; | |
505 | ||
506 | /* | |
507 | * Set current address to factory MAC address | |
508 | * | |
509 | * Note: We've already done this step in skfp_driver_init. | |
510 | * However, it's possible that a user has set a node | |
511 | * address override, then closed and reopened the | |
512 | * adapter. Unless we reset the device address field | |
513 | * now, we'll continue to use the existing modified | |
514 | * address. | |
515 | */ | |
516 | read_address(smc, NULL); | |
517 | memcpy(dev->dev_addr, smc->hw.fddi_canon_addr.a, 6); | |
518 | ||
519 | init_smt(smc, NULL); | |
520 | smt_online(smc, 1); | |
521 | STI_FBI(); | |
522 | ||
523 | /* Clear local multicast address tables */ | |
524 | mac_clear_multicast(smc); | |
525 | ||
526 | /* Disable promiscuous filter settings */ | |
527 | mac_drv_rx_mode(smc, RX_DISABLE_PROMISC); | |
528 | ||
529 | netif_start_queue(dev); | |
530 | return (0); | |
531 | } // skfp_open | |
532 | ||
533 | ||
534 | /* | |
535 | * ============== | |
536 | * = skfp_close = | |
537 | * ============== | |
538 | * | |
539 | * Overview: | |
540 | * Closes the device/module. | |
541 | * | |
542 | * Returns: | |
543 | * Condition code | |
544 | * | |
545 | * Arguments: | |
546 | * dev - pointer to device information | |
547 | * | |
548 | * Functional Description: | |
549 | * This routine closes the adapter and brings it to a safe state. | |
550 | * The interrupt service routine is deregistered with the OS. | |
551 | * The adapter can be opened again with another call to skfp_open(). | |
552 | * | |
553 | * Return Codes: | |
554 | * Always return 0. | |
555 | * | |
556 | * Assumptions: | |
557 | * No further requests for this adapter are made after this routine is | |
558 | * called. skfp_open() can be called to reset and reinitialize the | |
559 | * adapter. | |
560 | */ | |
561 | static int skfp_close(struct net_device *dev) | |
562 | { | |
563 | struct s_smc *smc = netdev_priv(dev); | |
564 | skfddi_priv *bp = &smc->os; | |
565 | ||
566 | CLI_FBI(); | |
567 | smt_reset_defaults(smc, 1); | |
568 | card_stop(smc); | |
569 | mac_drv_clear_tx_queue(smc); | |
570 | mac_drv_clear_rx_queue(smc); | |
571 | ||
572 | netif_stop_queue(dev); | |
573 | /* Deregister (free) IRQ */ | |
574 | free_irq(dev->irq, dev); | |
575 | ||
576 | skb_queue_purge(&bp->SendSkbQueue); | |
577 | bp->QueueSkb = MAX_TX_QUEUE_LEN; | |
578 | ||
579 | return (0); | |
580 | } // skfp_close | |
581 | ||
582 | ||
583 | /* | |
584 | * ================== | |
585 | * = skfp_interrupt = | |
586 | * ================== | |
587 | * | |
588 | * Overview: | |
589 | * Interrupt processing routine | |
590 | * | |
591 | * Returns: | |
592 | * None | |
593 | * | |
594 | * Arguments: | |
595 | * irq - interrupt vector | |
596 | * dev_id - pointer to device information | |
597 | * regs - pointer to registers structure | |
598 | * | |
599 | * Functional Description: | |
600 | * This routine calls the interrupt processing routine for this adapter. It | |
601 | * disables and reenables adapter interrupts, as appropriate. We can support | |
602 | * shared interrupts since the incoming dev_id pointer provides our device | |
603 | * structure context. All the real work is done in the hardware module. | |
604 | * | |
605 | * Return Codes: | |
606 | * None | |
607 | * | |
608 | * Assumptions: | |
609 | * The interrupt acknowledgement at the hardware level (eg. ACKing the PIC | |
610 | * on Intel-based systems) is done by the operating system outside this | |
611 | * routine. | |
612 | * | |
613 | * System interrupts are enabled through this call. | |
614 | * | |
615 | * Side Effects: | |
616 | * Interrupts are disabled, then reenabled at the adapter. | |
617 | */ | |
618 | ||
619 | irqreturn_t skfp_interrupt(int irq, void *dev_id, struct pt_regs *regs) | |
620 | { | |
621 | struct net_device *dev = (struct net_device *) dev_id; | |
622 | struct s_smc *smc; /* private board structure pointer */ | |
623 | skfddi_priv *bp; | |
624 | ||
625 | if (dev == NULL) { | |
626 | printk("%s: irq %d for unknown device\n", dev->name, irq); | |
627 | return IRQ_NONE; | |
628 | } | |
629 | ||
630 | smc = netdev_priv(dev); | |
631 | bp = &smc->os; | |
632 | ||
633 | // IRQs enabled or disabled ? | |
634 | if (inpd(ADDR(B0_IMSK)) == 0) { | |
635 | // IRQs are disabled: must be shared interrupt | |
636 | return IRQ_NONE; | |
637 | } | |
638 | // Note: At this point, IRQs are enabled. | |
639 | if ((inpd(ISR_A) & smc->hw.is_imask) == 0) { // IRQ? | |
640 | // Adapter did not issue an IRQ: must be shared interrupt | |
641 | return IRQ_NONE; | |
642 | } | |
643 | CLI_FBI(); // Disable IRQs from our adapter. | |
644 | spin_lock(&bp->DriverLock); | |
645 | ||
646 | // Call interrupt handler in hardware module (HWM). | |
647 | fddi_isr(smc); | |
648 | ||
649 | if (smc->os.ResetRequested) { | |
650 | ResetAdapter(smc); | |
651 | smc->os.ResetRequested = FALSE; | |
652 | } | |
653 | spin_unlock(&bp->DriverLock); | |
654 | STI_FBI(); // Enable IRQs from our adapter. | |
655 | ||
656 | return IRQ_HANDLED; | |
657 | } // skfp_interrupt | |
658 | ||
659 | ||
660 | /* | |
661 | * ====================== | |
662 | * = skfp_ctl_get_stats = | |
663 | * ====================== | |
664 | * | |
665 | * Overview: | |
666 | * Get statistics for FDDI adapter | |
667 | * | |
668 | * Returns: | |
669 | * Pointer to FDDI statistics structure | |
670 | * | |
671 | * Arguments: | |
672 | * dev - pointer to device information | |
673 | * | |
674 | * Functional Description: | |
675 | * Gets current MIB objects from adapter, then | |
676 | * returns FDDI statistics structure as defined | |
677 | * in if_fddi.h. | |
678 | * | |
679 | * Note: Since the FDDI statistics structure is | |
680 | * still new and the device structure doesn't | |
681 | * have an FDDI-specific get statistics handler, | |
682 | * we'll return the FDDI statistics structure as | |
683 | * a pointer to an Ethernet statistics structure. | |
684 | * That way, at least the first part of the statistics | |
685 | * structure can be decoded properly. | |
686 | * We'll have to pay attention to this routine as the | |
687 | * device structure becomes more mature and LAN media | |
688 | * independent. | |
689 | * | |
690 | */ | |
691 | struct net_device_stats *skfp_ctl_get_stats(struct net_device *dev) | |
692 | { | |
693 | struct s_smc *bp = netdev_priv(dev); | |
694 | ||
695 | /* Fill the bp->stats structure with driver-maintained counters */ | |
696 | ||
697 | bp->os.MacStat.port_bs_flag[0] = 0x1234; | |
698 | bp->os.MacStat.port_bs_flag[1] = 0x5678; | |
699 | // goos: need to fill out fddi statistic | |
700 | #if 0 | |
701 | /* Get FDDI SMT MIB objects */ | |
702 | ||
703 | /* Fill the bp->stats structure with the SMT MIB object values */ | |
704 | ||
705 | memcpy(bp->stats.smt_station_id, &bp->cmd_rsp_virt->smt_mib_get.smt_station_id, sizeof(bp->cmd_rsp_virt->smt_mib_get.smt_station_id)); | |
706 | bp->stats.smt_op_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_op_version_id; | |
707 | bp->stats.smt_hi_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_hi_version_id; | |
708 | bp->stats.smt_lo_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_lo_version_id; | |
709 | memcpy(bp->stats.smt_user_data, &bp->cmd_rsp_virt->smt_mib_get.smt_user_data, sizeof(bp->cmd_rsp_virt->smt_mib_get.smt_user_data)); | |
710 | bp->stats.smt_mib_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_mib_version_id; | |
711 | bp->stats.smt_mac_cts = bp->cmd_rsp_virt->smt_mib_get.smt_mac_ct; | |
712 | bp->stats.smt_non_master_cts = bp->cmd_rsp_virt->smt_mib_get.smt_non_master_ct; | |
713 | bp->stats.smt_master_cts = bp->cmd_rsp_virt->smt_mib_get.smt_master_ct; | |
714 | bp->stats.smt_available_paths = bp->cmd_rsp_virt->smt_mib_get.smt_available_paths; | |
715 | bp->stats.smt_config_capabilities = bp->cmd_rsp_virt->smt_mib_get.smt_config_capabilities; | |
716 | bp->stats.smt_config_policy = bp->cmd_rsp_virt->smt_mib_get.smt_config_policy; | |
717 | bp->stats.smt_connection_policy = bp->cmd_rsp_virt->smt_mib_get.smt_connection_policy; | |
718 | bp->stats.smt_t_notify = bp->cmd_rsp_virt->smt_mib_get.smt_t_notify; | |
719 | bp->stats.smt_stat_rpt_policy = bp->cmd_rsp_virt->smt_mib_get.smt_stat_rpt_policy; | |
720 | bp->stats.smt_trace_max_expiration = bp->cmd_rsp_virt->smt_mib_get.smt_trace_max_expiration; | |
721 | bp->stats.smt_bypass_present = bp->cmd_rsp_virt->smt_mib_get.smt_bypass_present; | |
722 | bp->stats.smt_ecm_state = bp->cmd_rsp_virt->smt_mib_get.smt_ecm_state; | |
723 | bp->stats.smt_cf_state = bp->cmd_rsp_virt->smt_mib_get.smt_cf_state; | |
724 | bp->stats.smt_remote_disconnect_flag = bp->cmd_rsp_virt->smt_mib_get.smt_remote_disconnect_flag; | |
725 | bp->stats.smt_station_status = bp->cmd_rsp_virt->smt_mib_get.smt_station_status; | |
726 | bp->stats.smt_peer_wrap_flag = bp->cmd_rsp_virt->smt_mib_get.smt_peer_wrap_flag; | |
727 | bp->stats.smt_time_stamp = bp->cmd_rsp_virt->smt_mib_get.smt_msg_time_stamp.ls; | |
728 | bp->stats.smt_transition_time_stamp = bp->cmd_rsp_virt->smt_mib_get.smt_transition_time_stamp.ls; | |
729 | bp->stats.mac_frame_status_functions = bp->cmd_rsp_virt->smt_mib_get.mac_frame_status_functions; | |
730 | bp->stats.mac_t_max_capability = bp->cmd_rsp_virt->smt_mib_get.mac_t_max_capability; | |
731 | bp->stats.mac_tvx_capability = bp->cmd_rsp_virt->smt_mib_get.mac_tvx_capability; | |
732 | bp->stats.mac_available_paths = bp->cmd_rsp_virt->smt_mib_get.mac_available_paths; | |
733 | bp->stats.mac_current_path = bp->cmd_rsp_virt->smt_mib_get.mac_current_path; | |
734 | memcpy(bp->stats.mac_upstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_upstream_nbr, FDDI_K_ALEN); | |
735 | memcpy(bp->stats.mac_downstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_downstream_nbr, FDDI_K_ALEN); | |
736 | memcpy(bp->stats.mac_old_upstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_old_upstream_nbr, FDDI_K_ALEN); | |
737 | memcpy(bp->stats.mac_old_downstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_old_downstream_nbr, FDDI_K_ALEN); | |
738 | bp->stats.mac_dup_address_test = bp->cmd_rsp_virt->smt_mib_get.mac_dup_address_test; | |
739 | bp->stats.mac_requested_paths = bp->cmd_rsp_virt->smt_mib_get.mac_requested_paths; | |
740 | bp->stats.mac_downstream_port_type = bp->cmd_rsp_virt->smt_mib_get.mac_downstream_port_type; | |
741 | memcpy(bp->stats.mac_smt_address, &bp->cmd_rsp_virt->smt_mib_get.mac_smt_address, FDDI_K_ALEN); | |
742 | bp->stats.mac_t_req = bp->cmd_rsp_virt->smt_mib_get.mac_t_req; | |
743 | bp->stats.mac_t_neg = bp->cmd_rsp_virt->smt_mib_get.mac_t_neg; | |
744 | bp->stats.mac_t_max = bp->cmd_rsp_virt->smt_mib_get.mac_t_max; | |
745 | bp->stats.mac_tvx_value = bp->cmd_rsp_virt->smt_mib_get.mac_tvx_value; | |
746 | bp->stats.mac_frame_error_threshold = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_threshold; | |
747 | bp->stats.mac_frame_error_ratio = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_ratio; | |
748 | bp->stats.mac_rmt_state = bp->cmd_rsp_virt->smt_mib_get.mac_rmt_state; | |
749 | bp->stats.mac_da_flag = bp->cmd_rsp_virt->smt_mib_get.mac_da_flag; | |
750 | bp->stats.mac_una_da_flag = bp->cmd_rsp_virt->smt_mib_get.mac_unda_flag; | |
751 | bp->stats.mac_frame_error_flag = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_flag; | |
752 | bp->stats.mac_ma_unitdata_available = bp->cmd_rsp_virt->smt_mib_get.mac_ma_unitdata_available; | |
753 | bp->stats.mac_hardware_present = bp->cmd_rsp_virt->smt_mib_get.mac_hardware_present; | |
754 | bp->stats.mac_ma_unitdata_enable = bp->cmd_rsp_virt->smt_mib_get.mac_ma_unitdata_enable; | |
755 | bp->stats.path_tvx_lower_bound = bp->cmd_rsp_virt->smt_mib_get.path_tvx_lower_bound; | |
756 | bp->stats.path_t_max_lower_bound = bp->cmd_rsp_virt->smt_mib_get.path_t_max_lower_bound; | |
757 | bp->stats.path_max_t_req = bp->cmd_rsp_virt->smt_mib_get.path_max_t_req; | |
758 | memcpy(bp->stats.path_configuration, &bp->cmd_rsp_virt->smt_mib_get.path_configuration, sizeof(bp->cmd_rsp_virt->smt_mib_get.path_configuration)); | |
759 | bp->stats.port_my_type[0] = bp->cmd_rsp_virt->smt_mib_get.port_my_type[0]; | |
760 | bp->stats.port_my_type[1] = bp->cmd_rsp_virt->smt_mib_get.port_my_type[1]; | |
761 | bp->stats.port_neighbor_type[0] = bp->cmd_rsp_virt->smt_mib_get.port_neighbor_type[0]; | |
762 | bp->stats.port_neighbor_type[1] = bp->cmd_rsp_virt->smt_mib_get.port_neighbor_type[1]; | |
763 | bp->stats.port_connection_policies[0] = bp->cmd_rsp_virt->smt_mib_get.port_connection_policies[0]; | |
764 | bp->stats.port_connection_policies[1] = bp->cmd_rsp_virt->smt_mib_get.port_connection_policies[1]; | |
765 | bp->stats.port_mac_indicated[0] = bp->cmd_rsp_virt->smt_mib_get.port_mac_indicated[0]; | |
766 | bp->stats.port_mac_indicated[1] = bp->cmd_rsp_virt->smt_mib_get.port_mac_indicated[1]; | |
767 | bp->stats.port_current_path[0] = bp->cmd_rsp_virt->smt_mib_get.port_current_path[0]; | |
768 | bp->stats.port_current_path[1] = bp->cmd_rsp_virt->smt_mib_get.port_current_path[1]; | |
769 | memcpy(&bp->stats.port_requested_paths[0 * 3], &bp->cmd_rsp_virt->smt_mib_get.port_requested_paths[0], 3); | |
770 | memcpy(&bp->stats.port_requested_paths[1 * 3], &bp->cmd_rsp_virt->smt_mib_get.port_requested_paths[1], 3); | |
771 | bp->stats.port_mac_placement[0] = bp->cmd_rsp_virt->smt_mib_get.port_mac_placement[0]; | |
772 | bp->stats.port_mac_placement[1] = bp->cmd_rsp_virt->smt_mib_get.port_mac_placement[1]; | |
773 | bp->stats.port_available_paths[0] = bp->cmd_rsp_virt->smt_mib_get.port_available_paths[0]; | |
774 | bp->stats.port_available_paths[1] = bp->cmd_rsp_virt->smt_mib_get.port_available_paths[1]; | |
775 | bp->stats.port_pmd_class[0] = bp->cmd_rsp_virt->smt_mib_get.port_pmd_class[0]; | |
776 | bp->stats.port_pmd_class[1] = bp->cmd_rsp_virt->smt_mib_get.port_pmd_class[1]; | |
777 | bp->stats.port_connection_capabilities[0] = bp->cmd_rsp_virt->smt_mib_get.port_connection_capabilities[0]; | |
778 | bp->stats.port_connection_capabilities[1] = bp->cmd_rsp_virt->smt_mib_get.port_connection_capabilities[1]; | |
779 | bp->stats.port_bs_flag[0] = bp->cmd_rsp_virt->smt_mib_get.port_bs_flag[0]; | |
780 | bp->stats.port_bs_flag[1] = bp->cmd_rsp_virt->smt_mib_get.port_bs_flag[1]; | |
781 | bp->stats.port_ler_estimate[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_estimate[0]; | |
782 | bp->stats.port_ler_estimate[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_estimate[1]; | |
783 | bp->stats.port_ler_cutoff[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_cutoff[0]; | |
784 | bp->stats.port_ler_cutoff[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_cutoff[1]; | |
785 | bp->stats.port_ler_alarm[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_alarm[0]; | |
786 | bp->stats.port_ler_alarm[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_alarm[1]; | |
787 | bp->stats.port_connect_state[0] = bp->cmd_rsp_virt->smt_mib_get.port_connect_state[0]; | |
788 | bp->stats.port_connect_state[1] = bp->cmd_rsp_virt->smt_mib_get.port_connect_state[1]; | |
789 | bp->stats.port_pcm_state[0] = bp->cmd_rsp_virt->smt_mib_get.port_pcm_state[0]; | |
790 | bp->stats.port_pcm_state[1] = bp->cmd_rsp_virt->smt_mib_get.port_pcm_state[1]; | |
791 | bp->stats.port_pc_withhold[0] = bp->cmd_rsp_virt->smt_mib_get.port_pc_withhold[0]; | |
792 | bp->stats.port_pc_withhold[1] = bp->cmd_rsp_virt->smt_mib_get.port_pc_withhold[1]; | |
793 | bp->stats.port_ler_flag[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_flag[0]; | |
794 | bp->stats.port_ler_flag[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_flag[1]; | |
795 | bp->stats.port_hardware_present[0] = bp->cmd_rsp_virt->smt_mib_get.port_hardware_present[0]; | |
796 | bp->stats.port_hardware_present[1] = bp->cmd_rsp_virt->smt_mib_get.port_hardware_present[1]; | |
797 | ||
798 | ||
799 | /* Fill the bp->stats structure with the FDDI counter values */ | |
800 | ||
801 | bp->stats.mac_frame_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.frame_cnt.ls; | |
802 | bp->stats.mac_copied_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.copied_cnt.ls; | |
803 | bp->stats.mac_transmit_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.transmit_cnt.ls; | |
804 | bp->stats.mac_error_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.error_cnt.ls; | |
805 | bp->stats.mac_lost_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.lost_cnt.ls; | |
806 | bp->stats.port_lct_fail_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.lct_rejects[0].ls; | |
807 | bp->stats.port_lct_fail_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.lct_rejects[1].ls; | |
808 | bp->stats.port_lem_reject_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.lem_rejects[0].ls; | |
809 | bp->stats.port_lem_reject_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.lem_rejects[1].ls; | |
810 | bp->stats.port_lem_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.link_errors[0].ls; | |
811 | bp->stats.port_lem_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.link_errors[1].ls; | |
812 | ||
813 | #endif | |
814 | return ((struct net_device_stats *) &bp->os.MacStat); | |
815 | } // ctl_get_stat | |
816 | ||
817 | ||
818 | /* | |
819 | * ============================== | |
820 | * = skfp_ctl_set_multicast_list = | |
821 | * ============================== | |
822 | * | |
823 | * Overview: | |
824 | * Enable/Disable LLC frame promiscuous mode reception | |
825 | * on the adapter and/or update multicast address table. | |
826 | * | |
827 | * Returns: | |
828 | * None | |
829 | * | |
830 | * Arguments: | |
831 | * dev - pointer to device information | |
832 | * | |
833 | * Functional Description: | |
834 | * This function acquires the driver lock and only calls | |
835 | * skfp_ctl_set_multicast_list_wo_lock then. | |
836 | * This routine follows a fairly simple algorithm for setting the | |
837 | * adapter filters and CAM: | |
838 | * | |
839 | * if IFF_PROMISC flag is set | |
840 | * enable promiscuous mode | |
841 | * else | |
842 | * disable promiscuous mode | |
843 | * if number of multicast addresses <= max. multicast number | |
844 | * add mc addresses to adapter table | |
845 | * else | |
846 | * enable promiscuous mode | |
847 | * update adapter filters | |
848 | * | |
849 | * Assumptions: | |
850 | * Multicast addresses are presented in canonical (LSB) format. | |
851 | * | |
852 | * Side Effects: | |
853 | * On-board adapter filters are updated. | |
854 | */ | |
855 | static void skfp_ctl_set_multicast_list(struct net_device *dev) | |
856 | { | |
857 | struct s_smc *smc = netdev_priv(dev); | |
858 | skfddi_priv *bp = &smc->os; | |
859 | unsigned long Flags; | |
860 | ||
861 | spin_lock_irqsave(&bp->DriverLock, Flags); | |
862 | skfp_ctl_set_multicast_list_wo_lock(dev); | |
863 | spin_unlock_irqrestore(&bp->DriverLock, Flags); | |
864 | return; | |
865 | } // skfp_ctl_set_multicast_list | |
866 | ||
867 | ||
868 | ||
869 | static void skfp_ctl_set_multicast_list_wo_lock(struct net_device *dev) | |
870 | { | |
871 | struct s_smc *smc = netdev_priv(dev); | |
872 | struct dev_mc_list *dmi; /* ptr to multicast addr entry */ | |
873 | int i; | |
874 | ||
875 | /* Enable promiscuous mode, if necessary */ | |
876 | if (dev->flags & IFF_PROMISC) { | |
877 | mac_drv_rx_mode(smc, RX_ENABLE_PROMISC); | |
878 | PRINTK(KERN_INFO "PROMISCUOUS MODE ENABLED\n"); | |
879 | } | |
880 | /* Else, update multicast address table */ | |
881 | else { | |
882 | mac_drv_rx_mode(smc, RX_DISABLE_PROMISC); | |
883 | PRINTK(KERN_INFO "PROMISCUOUS MODE DISABLED\n"); | |
884 | ||
885 | // Reset all MC addresses | |
886 | mac_clear_multicast(smc); | |
887 | mac_drv_rx_mode(smc, RX_DISABLE_ALLMULTI); | |
888 | ||
889 | if (dev->flags & IFF_ALLMULTI) { | |
890 | mac_drv_rx_mode(smc, RX_ENABLE_ALLMULTI); | |
891 | PRINTK(KERN_INFO "ENABLE ALL MC ADDRESSES\n"); | |
892 | } else if (dev->mc_count > 0) { | |
893 | if (dev->mc_count <= FPMAX_MULTICAST) { | |
894 | /* use exact filtering */ | |
895 | ||
896 | // point to first multicast addr | |
897 | dmi = dev->mc_list; | |
898 | ||
899 | for (i = 0; i < dev->mc_count; i++) { | |
900 | mac_add_multicast(smc, | |
901 | (struct fddi_addr *)dmi->dmi_addr, | |
902 | 1); | |
903 | ||
904 | PRINTK(KERN_INFO "ENABLE MC ADDRESS:"); | |
905 | PRINTK(" %02x %02x %02x ", | |
906 | dmi->dmi_addr[0], | |
907 | dmi->dmi_addr[1], | |
908 | dmi->dmi_addr[2]); | |
909 | PRINTK("%02x %02x %02x\n", | |
910 | dmi->dmi_addr[3], | |
911 | dmi->dmi_addr[4], | |
912 | dmi->dmi_addr[5]); | |
913 | dmi = dmi->next; | |
914 | } // for | |
915 | ||
916 | } else { // more MC addresses than HW supports | |
917 | ||
918 | mac_drv_rx_mode(smc, RX_ENABLE_ALLMULTI); | |
919 | PRINTK(KERN_INFO "ENABLE ALL MC ADDRESSES\n"); | |
920 | } | |
921 | } else { // no MC addresses | |
922 | ||
923 | PRINTK(KERN_INFO "DISABLE ALL MC ADDRESSES\n"); | |
924 | } | |
925 | ||
926 | /* Update adapter filters */ | |
927 | mac_update_multicast(smc); | |
928 | } | |
929 | return; | |
930 | } // skfp_ctl_set_multicast_list_wo_lock | |
931 | ||
932 | ||
933 | /* | |
934 | * =========================== | |
935 | * = skfp_ctl_set_mac_address = | |
936 | * =========================== | |
937 | * | |
938 | * Overview: | |
939 | * set new mac address on adapter and update dev_addr field in device table. | |
940 | * | |
941 | * Returns: | |
942 | * None | |
943 | * | |
944 | * Arguments: | |
945 | * dev - pointer to device information | |
946 | * addr - pointer to sockaddr structure containing unicast address to set | |
947 | * | |
948 | * Assumptions: | |
949 | * The address pointed to by addr->sa_data is a valid unicast | |
950 | * address and is presented in canonical (LSB) format. | |
951 | */ | |
952 | static int skfp_ctl_set_mac_address(struct net_device *dev, void *addr) | |
953 | { | |
954 | struct s_smc *smc = netdev_priv(dev); | |
955 | struct sockaddr *p_sockaddr = (struct sockaddr *) addr; | |
956 | skfddi_priv *bp = &smc->os; | |
957 | unsigned long Flags; | |
958 | ||
959 | ||
960 | memcpy(dev->dev_addr, p_sockaddr->sa_data, FDDI_K_ALEN); | |
961 | spin_lock_irqsave(&bp->DriverLock, Flags); | |
962 | ResetAdapter(smc); | |
963 | spin_unlock_irqrestore(&bp->DriverLock, Flags); | |
964 | ||
965 | return (0); /* always return zero */ | |
966 | } // skfp_ctl_set_mac_address | |
967 | ||
968 | ||
969 | /* | |
970 | * ============== | |
971 | * = skfp_ioctl = | |
972 | * ============== | |
973 | * | |
974 | * Overview: | |
975 | * | |
976 | * Perform IOCTL call functions here. Some are privileged operations and the | |
977 | * effective uid is checked in those cases. | |
978 | * | |
979 | * Returns: | |
980 | * status value | |
981 | * 0 - success | |
982 | * other - failure | |
983 | * | |
984 | * Arguments: | |
985 | * dev - pointer to device information | |
986 | * rq - pointer to ioctl request structure | |
987 | * cmd - ? | |
988 | * | |
989 | */ | |
990 | ||
991 | ||
992 | static int skfp_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
993 | { | |
994 | struct s_smc *smc = netdev_priv(dev); | |
995 | skfddi_priv *lp = &smc->os; | |
996 | struct s_skfp_ioctl ioc; | |
997 | int status = 0; | |
998 | ||
999 | if (copy_from_user(&ioc, rq->ifr_data, sizeof(struct s_skfp_ioctl))) | |
1000 | return -EFAULT; | |
1001 | ||
1002 | switch (ioc.cmd) { | |
1003 | case SKFP_GET_STATS: /* Get the driver statistics */ | |
1004 | ioc.len = sizeof(lp->MacStat); | |
1005 | status = copy_to_user(ioc.data, skfp_ctl_get_stats(dev), ioc.len) | |
1006 | ? -EFAULT : 0; | |
1007 | break; | |
1008 | case SKFP_CLR_STATS: /* Zero out the driver statistics */ | |
1009 | if (!capable(CAP_NET_ADMIN)) { | |
1010 | memset(&lp->MacStat, 0, sizeof(lp->MacStat)); | |
1011 | } else { | |
1012 | status = -EPERM; | |
1013 | } | |
1014 | break; | |
1015 | default: | |
1016 | printk("ioctl for %s: unknow cmd: %04x\n", dev->name, ioc.cmd); | |
1017 | status = -EOPNOTSUPP; | |
1018 | ||
1019 | } // switch | |
1020 | ||
1021 | return status; | |
1022 | } // skfp_ioctl | |
1023 | ||
1024 | ||
1025 | /* | |
1026 | * ===================== | |
1027 | * = skfp_send_pkt = | |
1028 | * ===================== | |
1029 | * | |
1030 | * Overview: | |
1031 | * Queues a packet for transmission and try to transmit it. | |
1032 | * | |
1033 | * Returns: | |
1034 | * Condition code | |
1035 | * | |
1036 | * Arguments: | |
1037 | * skb - pointer to sk_buff to queue for transmission | |
1038 | * dev - pointer to device information | |
1039 | * | |
1040 | * Functional Description: | |
1041 | * Here we assume that an incoming skb transmit request | |
1042 | * is contained in a single physically contiguous buffer | |
1043 | * in which the virtual address of the start of packet | |
1044 | * (skb->data) can be converted to a physical address | |
1045 | * by using pci_map_single(). | |
1046 | * | |
1047 | * We have an internal queue for packets we can not send | |
1048 | * immediately. Packets in this queue can be given to the | |
1049 | * adapter if transmit buffers are freed. | |
1050 | * | |
1051 | * We can't free the skb until after it's been DMA'd | |
1052 | * out by the adapter, so we'll keep it in the driver and | |
1053 | * return it in mac_drv_tx_complete. | |
1054 | * | |
1055 | * Return Codes: | |
1056 | * 0 - driver has queued and/or sent packet | |
1057 | * 1 - caller should requeue the sk_buff for later transmission | |
1058 | * | |
1059 | * Assumptions: | |
1060 | * The entire packet is stored in one physically | |
1061 | * contiguous buffer which is not cached and whose | |
1062 | * 32-bit physical address can be determined. | |
1063 | * | |
1064 | * It's vital that this routine is NOT reentered for the | |
1065 | * same board and that the OS is not in another section of | |
1066 | * code (eg. skfp_interrupt) for the same board on a | |
1067 | * different thread. | |
1068 | * | |
1069 | * Side Effects: | |
1070 | * None | |
1071 | */ | |
1072 | static int skfp_send_pkt(struct sk_buff *skb, struct net_device *dev) | |
1073 | { | |
1074 | struct s_smc *smc = netdev_priv(dev); | |
1075 | skfddi_priv *bp = &smc->os; | |
1076 | ||
1077 | PRINTK(KERN_INFO "skfp_send_pkt\n"); | |
1078 | ||
1079 | /* | |
1080 | * Verify that incoming transmit request is OK | |
1081 | * | |
1082 | * Note: The packet size check is consistent with other | |
1083 | * Linux device drivers, although the correct packet | |
1084 | * size should be verified before calling the | |
1085 | * transmit routine. | |
1086 | */ | |
1087 | ||
1088 | if (!(skb->len >= FDDI_K_LLC_ZLEN && skb->len <= FDDI_K_LLC_LEN)) { | |
1089 | bp->MacStat.gen.tx_errors++; /* bump error counter */ | |
1090 | // dequeue packets from xmt queue and send them | |
1091 | netif_start_queue(dev); | |
1092 | dev_kfree_skb(skb); | |
1093 | return (0); /* return "success" */ | |
1094 | } | |
1095 | if (bp->QueueSkb == 0) { // return with tbusy set: queue full | |
1096 | ||
1097 | netif_stop_queue(dev); | |
1098 | return 1; | |
1099 | } | |
1100 | bp->QueueSkb--; | |
1101 | skb_queue_tail(&bp->SendSkbQueue, skb); | |
1102 | send_queued_packets(netdev_priv(dev)); | |
1103 | if (bp->QueueSkb == 0) { | |
1104 | netif_stop_queue(dev); | |
1105 | } | |
1106 | dev->trans_start = jiffies; | |
1107 | return 0; | |
1108 | ||
1109 | } // skfp_send_pkt | |
1110 | ||
1111 | ||
1112 | /* | |
1113 | * ======================= | |
1114 | * = send_queued_packets = | |
1115 | * ======================= | |
1116 | * | |
1117 | * Overview: | |
1118 | * Send packets from the driver queue as long as there are some and | |
1119 | * transmit resources are available. | |
1120 | * | |
1121 | * Returns: | |
1122 | * None | |
1123 | * | |
1124 | * Arguments: | |
1125 | * smc - pointer to smc (adapter) structure | |
1126 | * | |
1127 | * Functional Description: | |
1128 | * Take a packet from queue if there is any. If not, then we are done. | |
1129 | * Check if there are resources to send the packet. If not, requeue it | |
1130 | * and exit. | |
1131 | * Set packet descriptor flags and give packet to adapter. | |
1132 | * Check if any send resources can be freed (we do not use the | |
1133 | * transmit complete interrupt). | |
1134 | */ | |
1135 | static void send_queued_packets(struct s_smc *smc) | |
1136 | { | |
1137 | skfddi_priv *bp = &smc->os; | |
1138 | struct sk_buff *skb; | |
1139 | unsigned char fc; | |
1140 | int queue; | |
1141 | struct s_smt_fp_txd *txd; // Current TxD. | |
1142 | dma_addr_t dma_address; | |
1143 | unsigned long Flags; | |
1144 | ||
1145 | int frame_status; // HWM tx frame status. | |
1146 | ||
1147 | PRINTK(KERN_INFO "send queued packets\n"); | |
1148 | for (;;) { | |
1149 | // send first buffer from queue | |
1150 | skb = skb_dequeue(&bp->SendSkbQueue); | |
1151 | ||
1152 | if (!skb) { | |
1153 | PRINTK(KERN_INFO "queue empty\n"); | |
1154 | return; | |
1155 | } // queue empty ! | |
1156 | ||
1157 | spin_lock_irqsave(&bp->DriverLock, Flags); | |
1158 | fc = skb->data[0]; | |
1159 | queue = (fc & FC_SYNC_BIT) ? QUEUE_S : QUEUE_A0; | |
1160 | #ifdef ESS | |
1161 | // Check if the frame may/must be sent as a synchronous frame. | |
1162 | ||
1163 | if ((fc & ~(FC_SYNC_BIT | FC_LLC_PRIOR)) == FC_ASYNC_LLC) { | |
1164 | // It's an LLC frame. | |
1165 | if (!smc->ess.sync_bw_available) | |
1166 | fc &= ~FC_SYNC_BIT; // No bandwidth available. | |
1167 | ||
1168 | else { // Bandwidth is available. | |
1169 | ||
1170 | if (smc->mib.fddiESSSynchTxMode) { | |
1171 | // Send as sync. frame. | |
1172 | fc |= FC_SYNC_BIT; | |
1173 | } | |
1174 | } | |
1175 | } | |
1176 | #endif // ESS | |
1177 | frame_status = hwm_tx_init(smc, fc, 1, skb->len, queue); | |
1178 | ||
1179 | if ((frame_status & (LOC_TX | LAN_TX)) == 0) { | |
1180 | // Unable to send the frame. | |
1181 | ||
1182 | if ((frame_status & RING_DOWN) != 0) { | |
1183 | // Ring is down. | |
1184 | PRINTK("Tx attempt while ring down.\n"); | |
1185 | } else if ((frame_status & OUT_OF_TXD) != 0) { | |
1186 | PRINTK("%s: out of TXDs.\n", bp->dev->name); | |
1187 | } else { | |
1188 | PRINTK("%s: out of transmit resources", | |
1189 | bp->dev->name); | |
1190 | } | |
1191 | ||
1192 | // Note: We will retry the operation as soon as | |
1193 | // transmit resources become available. | |
1194 | skb_queue_head(&bp->SendSkbQueue, skb); | |
1195 | spin_unlock_irqrestore(&bp->DriverLock, Flags); | |
1196 | return; // Packet has been queued. | |
1197 | ||
1198 | } // if (unable to send frame) | |
1199 | ||
1200 | bp->QueueSkb++; // one packet less in local queue | |
1201 | ||
1202 | // source address in packet ? | |
1203 | CheckSourceAddress(skb->data, smc->hw.fddi_canon_addr.a); | |
1204 | ||
1205 | txd = (struct s_smt_fp_txd *) HWM_GET_CURR_TXD(smc, queue); | |
1206 | ||
1207 | dma_address = pci_map_single(&bp->pdev, skb->data, | |
1208 | skb->len, PCI_DMA_TODEVICE); | |
1209 | if (frame_status & LAN_TX) { | |
1210 | txd->txd_os.skb = skb; // save skb | |
1211 | txd->txd_os.dma_addr = dma_address; // save dma mapping | |
1212 | } | |
1213 | hwm_tx_frag(smc, skb->data, dma_address, skb->len, | |
1214 | frame_status | FIRST_FRAG | LAST_FRAG | EN_IRQ_EOF); | |
1215 | ||
1216 | if (!(frame_status & LAN_TX)) { // local only frame | |
1217 | pci_unmap_single(&bp->pdev, dma_address, | |
1218 | skb->len, PCI_DMA_TODEVICE); | |
1219 | dev_kfree_skb_irq(skb); | |
1220 | } | |
1221 | spin_unlock_irqrestore(&bp->DriverLock, Flags); | |
1222 | } // for | |
1223 | ||
1224 | return; // never reached | |
1225 | ||
1226 | } // send_queued_packets | |
1227 | ||
1228 | ||
1229 | /************************ | |
1230 | * | |
1231 | * CheckSourceAddress | |
1232 | * | |
1233 | * Verify if the source address is set. Insert it if necessary. | |
1234 | * | |
1235 | ************************/ | |
1236 | void CheckSourceAddress(unsigned char *frame, unsigned char *hw_addr) | |
1237 | { | |
1238 | unsigned char SRBit; | |
1239 | ||
1240 | if ((((unsigned long) frame[1 + 6]) & ~0x01) != 0) // source routing bit | |
1241 | ||
1242 | return; | |
1243 | if ((unsigned short) frame[1 + 10] != 0) | |
1244 | return; | |
1245 | SRBit = frame[1 + 6] & 0x01; | |
1246 | memcpy(&frame[1 + 6], hw_addr, 6); | |
1247 | frame[8] |= SRBit; | |
1248 | } // CheckSourceAddress | |
1249 | ||
1250 | ||
1251 | /************************ | |
1252 | * | |
1253 | * ResetAdapter | |
1254 | * | |
1255 | * Reset the adapter and bring it back to operational mode. | |
1256 | * Args | |
1257 | * smc - A pointer to the SMT context struct. | |
1258 | * Out | |
1259 | * Nothing. | |
1260 | * | |
1261 | ************************/ | |
1262 | static void ResetAdapter(struct s_smc *smc) | |
1263 | { | |
1264 | ||
1265 | PRINTK(KERN_INFO "[fddi: ResetAdapter]\n"); | |
1266 | ||
1267 | // Stop the adapter. | |
1268 | ||
1269 | card_stop(smc); // Stop all activity. | |
1270 | ||
1271 | // Clear the transmit and receive descriptor queues. | |
1272 | mac_drv_clear_tx_queue(smc); | |
1273 | mac_drv_clear_rx_queue(smc); | |
1274 | ||
1275 | // Restart the adapter. | |
1276 | ||
1277 | smt_reset_defaults(smc, 1); // Initialize the SMT module. | |
1278 | ||
1279 | init_smt(smc, (smc->os.dev)->dev_addr); // Initialize the hardware. | |
1280 | ||
1281 | smt_online(smc, 1); // Insert into the ring again. | |
1282 | STI_FBI(); | |
1283 | ||
1284 | // Restore original receive mode (multicasts, promiscuous, etc.). | |
1285 | skfp_ctl_set_multicast_list_wo_lock(smc->os.dev); | |
1286 | } // ResetAdapter | |
1287 | ||
1288 | ||
1289 | //--------------- functions called by hardware module ---------------- | |
1290 | ||
1291 | /************************ | |
1292 | * | |
1293 | * llc_restart_tx | |
1294 | * | |
1295 | * The hardware driver calls this routine when the transmit complete | |
1296 | * interrupt bits (end of frame) for the synchronous or asynchronous | |
1297 | * queue is set. | |
1298 | * | |
1299 | * NOTE The hardware driver calls this function also if no packets are queued. | |
1300 | * The routine must be able to handle this case. | |
1301 | * Args | |
1302 | * smc - A pointer to the SMT context struct. | |
1303 | * Out | |
1304 | * Nothing. | |
1305 | * | |
1306 | ************************/ | |
1307 | void llc_restart_tx(struct s_smc *smc) | |
1308 | { | |
1309 | skfddi_priv *bp = &smc->os; | |
1310 | ||
1311 | PRINTK(KERN_INFO "[llc_restart_tx]\n"); | |
1312 | ||
1313 | // Try to send queued packets | |
1314 | spin_unlock(&bp->DriverLock); | |
1315 | send_queued_packets(smc); | |
1316 | spin_lock(&bp->DriverLock); | |
1317 | netif_start_queue(bp->dev);// system may send again if it was blocked | |
1318 | ||
1319 | } // llc_restart_tx | |
1320 | ||
1321 | ||
1322 | /************************ | |
1323 | * | |
1324 | * mac_drv_get_space | |
1325 | * | |
1326 | * The hardware module calls this function to allocate the memory | |
1327 | * for the SMT MBufs if the define MB_OUTSIDE_SMC is specified. | |
1328 | * Args | |
1329 | * smc - A pointer to the SMT context struct. | |
1330 | * | |
1331 | * size - Size of memory in bytes to allocate. | |
1332 | * Out | |
1333 | * != 0 A pointer to the virtual address of the allocated memory. | |
1334 | * == 0 Allocation error. | |
1335 | * | |
1336 | ************************/ | |
1337 | void *mac_drv_get_space(struct s_smc *smc, unsigned int size) | |
1338 | { | |
1339 | void *virt; | |
1340 | ||
1341 | PRINTK(KERN_INFO "mac_drv_get_space (%d bytes), ", size); | |
1342 | virt = (void *) (smc->os.SharedMemAddr + smc->os.SharedMemHeap); | |
1343 | ||
1344 | if ((smc->os.SharedMemHeap + size) > smc->os.SharedMemSize) { | |
1345 | printk("Unexpected SMT memory size requested: %d\n", size); | |
1346 | return (NULL); | |
1347 | } | |
1348 | smc->os.SharedMemHeap += size; // Move heap pointer. | |
1349 | ||
1350 | PRINTK(KERN_INFO "mac_drv_get_space end\n"); | |
1351 | PRINTK(KERN_INFO "virt addr: %lx\n", (ulong) virt); | |
1352 | PRINTK(KERN_INFO "bus addr: %lx\n", (ulong) | |
1353 | (smc->os.SharedMemDMA + | |
1354 | ((char *) virt - (char *)smc->os.SharedMemAddr))); | |
1355 | return (virt); | |
1356 | } // mac_drv_get_space | |
1357 | ||
1358 | ||
1359 | /************************ | |
1360 | * | |
1361 | * mac_drv_get_desc_mem | |
1362 | * | |
1363 | * This function is called by the hardware dependent module. | |
1364 | * It allocates the memory for the RxD and TxD descriptors. | |
1365 | * | |
1366 | * This memory must be non-cached, non-movable and non-swappable. | |
1367 | * This memory should start at a physical page boundary. | |
1368 | * Args | |
1369 | * smc - A pointer to the SMT context struct. | |
1370 | * | |
1371 | * size - Size of memory in bytes to allocate. | |
1372 | * Out | |
1373 | * != 0 A pointer to the virtual address of the allocated memory. | |
1374 | * == 0 Allocation error. | |
1375 | * | |
1376 | ************************/ | |
1377 | void *mac_drv_get_desc_mem(struct s_smc *smc, unsigned int size) | |
1378 | { | |
1379 | ||
1380 | char *virt; | |
1381 | ||
1382 | PRINTK(KERN_INFO "mac_drv_get_desc_mem\n"); | |
1383 | ||
1384 | // Descriptor memory must be aligned on 16-byte boundary. | |
1385 | ||
1386 | virt = mac_drv_get_space(smc, size); | |
1387 | ||
1388 | size = (u_int) (16 - (((unsigned long) virt) & 15UL)); | |
1389 | size = size % 16; | |
1390 | ||
1391 | PRINTK("Allocate %u bytes alignment gap ", size); | |
1392 | PRINTK("for descriptor memory.\n"); | |
1393 | ||
1394 | if (!mac_drv_get_space(smc, size)) { | |
1395 | printk("fddi: Unable to align descriptor memory.\n"); | |
1396 | return (NULL); | |
1397 | } | |
1398 | return (virt + size); | |
1399 | } // mac_drv_get_desc_mem | |
1400 | ||
1401 | ||
1402 | /************************ | |
1403 | * | |
1404 | * mac_drv_virt2phys | |
1405 | * | |
1406 | * Get the physical address of a given virtual address. | |
1407 | * Args | |
1408 | * smc - A pointer to the SMT context struct. | |
1409 | * | |
1410 | * virt - A (virtual) pointer into our 'shared' memory area. | |
1411 | * Out | |
1412 | * Physical address of the given virtual address. | |
1413 | * | |
1414 | ************************/ | |
1415 | unsigned long mac_drv_virt2phys(struct s_smc *smc, void *virt) | |
1416 | { | |
1417 | return (smc->os.SharedMemDMA + | |
1418 | ((char *) virt - (char *)smc->os.SharedMemAddr)); | |
1419 | } // mac_drv_virt2phys | |
1420 | ||
1421 | ||
1422 | /************************ | |
1423 | * | |
1424 | * dma_master | |
1425 | * | |
1426 | * The HWM calls this function, when the driver leads through a DMA | |
1427 | * transfer. If the OS-specific module must prepare the system hardware | |
1428 | * for the DMA transfer, it should do it in this function. | |
1429 | * | |
1430 | * The hardware module calls this dma_master if it wants to send an SMT | |
1431 | * frame. This means that the virt address passed in here is part of | |
1432 | * the 'shared' memory area. | |
1433 | * Args | |
1434 | * smc - A pointer to the SMT context struct. | |
1435 | * | |
1436 | * virt - The virtual address of the data. | |
1437 | * | |
1438 | * len - The length in bytes of the data. | |
1439 | * | |
1440 | * flag - Indicates the transmit direction and the buffer type: | |
1441 | * DMA_RD (0x01) system RAM ==> adapter buffer memory | |
1442 | * DMA_WR (0x02) adapter buffer memory ==> system RAM | |
1443 | * SMT_BUF (0x80) SMT buffer | |
1444 | * | |
1445 | * >> NOTE: SMT_BUF and DMA_RD are always set for PCI. << | |
1446 | * Out | |
1447 | * Returns the pyhsical address for the DMA transfer. | |
1448 | * | |
1449 | ************************/ | |
1450 | u_long dma_master(struct s_smc * smc, void *virt, int len, int flag) | |
1451 | { | |
1452 | return (smc->os.SharedMemDMA + | |
1453 | ((char *) virt - (char *)smc->os.SharedMemAddr)); | |
1454 | } // dma_master | |
1455 | ||
1456 | ||
1457 | /************************ | |
1458 | * | |
1459 | * dma_complete | |
1460 | * | |
1461 | * The hardware module calls this routine when it has completed a DMA | |
1462 | * transfer. If the operating system dependent module has set up the DMA | |
1463 | * channel via dma_master() (e.g. Windows NT or AIX) it should clean up | |
1464 | * the DMA channel. | |
1465 | * Args | |
1466 | * smc - A pointer to the SMT context struct. | |
1467 | * | |
1468 | * descr - A pointer to a TxD or RxD, respectively. | |
1469 | * | |
1470 | * flag - Indicates the DMA transfer direction / SMT buffer: | |
1471 | * DMA_RD (0x01) system RAM ==> adapter buffer memory | |
1472 | * DMA_WR (0x02) adapter buffer memory ==> system RAM | |
1473 | * SMT_BUF (0x80) SMT buffer (managed by HWM) | |
1474 | * Out | |
1475 | * Nothing. | |
1476 | * | |
1477 | ************************/ | |
1478 | void dma_complete(struct s_smc *smc, volatile union s_fp_descr *descr, int flag) | |
1479 | { | |
1480 | /* For TX buffers, there are two cases. If it is an SMT transmit | |
1481 | * buffer, there is nothing to do since we use consistent memory | |
1482 | * for the 'shared' memory area. The other case is for normal | |
1483 | * transmit packets given to us by the networking stack, and in | |
1484 | * that case we cleanup the PCI DMA mapping in mac_drv_tx_complete | |
1485 | * below. | |
1486 | * | |
1487 | * For RX buffers, we have to unmap dynamic PCI DMA mappings here | |
1488 | * because the hardware module is about to potentially look at | |
1489 | * the contents of the buffer. If we did not call the PCI DMA | |
1490 | * unmap first, the hardware module could read inconsistent data. | |
1491 | */ | |
1492 | if (flag & DMA_WR) { | |
1493 | skfddi_priv *bp = &smc->os; | |
1494 | volatile struct s_smt_fp_rxd *r = &descr->r; | |
1495 | ||
1496 | /* If SKB is NULL, we used the local buffer. */ | |
1497 | if (r->rxd_os.skb && r->rxd_os.dma_addr) { | |
1498 | int MaxFrameSize = bp->MaxFrameSize; | |
1499 | ||
1500 | pci_unmap_single(&bp->pdev, r->rxd_os.dma_addr, | |
1501 | MaxFrameSize, PCI_DMA_FROMDEVICE); | |
1502 | r->rxd_os.dma_addr = 0; | |
1503 | } | |
1504 | } | |
1505 | } // dma_complete | |
1506 | ||
1507 | ||
1508 | /************************ | |
1509 | * | |
1510 | * mac_drv_tx_complete | |
1511 | * | |
1512 | * Transmit of a packet is complete. Release the tx staging buffer. | |
1513 | * | |
1514 | * Args | |
1515 | * smc - A pointer to the SMT context struct. | |
1516 | * | |
1517 | * txd - A pointer to the last TxD which is used by the frame. | |
1518 | * Out | |
1519 | * Returns nothing. | |
1520 | * | |
1521 | ************************/ | |
1522 | void mac_drv_tx_complete(struct s_smc *smc, volatile struct s_smt_fp_txd *txd) | |
1523 | { | |
1524 | struct sk_buff *skb; | |
1525 | ||
1526 | PRINTK(KERN_INFO "entering mac_drv_tx_complete\n"); | |
1527 | // Check if this TxD points to a skb | |
1528 | ||
1529 | if (!(skb = txd->txd_os.skb)) { | |
1530 | PRINTK("TXD with no skb assigned.\n"); | |
1531 | return; | |
1532 | } | |
1533 | txd->txd_os.skb = NULL; | |
1534 | ||
1535 | // release the DMA mapping | |
1536 | pci_unmap_single(&smc->os.pdev, txd->txd_os.dma_addr, | |
1537 | skb->len, PCI_DMA_TODEVICE); | |
1538 | txd->txd_os.dma_addr = 0; | |
1539 | ||
1540 | smc->os.MacStat.gen.tx_packets++; // Count transmitted packets. | |
1541 | smc->os.MacStat.gen.tx_bytes+=skb->len; // Count bytes | |
1542 | ||
1543 | // free the skb | |
1544 | dev_kfree_skb_irq(skb); | |
1545 | ||
1546 | PRINTK(KERN_INFO "leaving mac_drv_tx_complete\n"); | |
1547 | } // mac_drv_tx_complete | |
1548 | ||
1549 | ||
1550 | /************************ | |
1551 | * | |
1552 | * dump packets to logfile | |
1553 | * | |
1554 | ************************/ | |
1555 | #ifdef DUMPPACKETS | |
1556 | void dump_data(unsigned char *Data, int length) | |
1557 | { | |
1558 | int i, j; | |
1559 | unsigned char s[255], sh[10]; | |
1560 | if (length > 64) { | |
1561 | length = 64; | |
1562 | } | |
1563 | printk(KERN_INFO "---Packet start---\n"); | |
1564 | for (i = 0, j = 0; i < length / 8; i++, j += 8) | |
1565 | printk(KERN_INFO "%02x %02x %02x %02x %02x %02x %02x %02x\n", | |
1566 | Data[j + 0], Data[j + 1], Data[j + 2], Data[j + 3], | |
1567 | Data[j + 4], Data[j + 5], Data[j + 6], Data[j + 7]); | |
1568 | strcpy(s, ""); | |
1569 | for (i = 0; i < length % 8; i++) { | |
1570 | sprintf(sh, "%02x ", Data[j + i]); | |
1571 | strcat(s, sh); | |
1572 | } | |
1573 | printk(KERN_INFO "%s\n", s); | |
1574 | printk(KERN_INFO "------------------\n"); | |
1575 | } // dump_data | |
1576 | #else | |
1577 | #define dump_data(data,len) | |
1578 | #endif // DUMPPACKETS | |
1579 | ||
1580 | /************************ | |
1581 | * | |
1582 | * mac_drv_rx_complete | |
1583 | * | |
1584 | * The hardware module calls this function if an LLC frame is received | |
1585 | * in a receive buffer. Also the SMT, NSA, and directed beacon frames | |
1586 | * from the network will be passed to the LLC layer by this function | |
1587 | * if passing is enabled. | |
1588 | * | |
1589 | * mac_drv_rx_complete forwards the frame to the LLC layer if it should | |
1590 | * be received. It also fills the RxD ring with new receive buffers if | |
1591 | * some can be queued. | |
1592 | * Args | |
1593 | * smc - A pointer to the SMT context struct. | |
1594 | * | |
1595 | * rxd - A pointer to the first RxD which is used by the receive frame. | |
1596 | * | |
1597 | * frag_count - Count of RxDs used by the received frame. | |
1598 | * | |
1599 | * len - Frame length. | |
1600 | * Out | |
1601 | * Nothing. | |
1602 | * | |
1603 | ************************/ | |
1604 | void mac_drv_rx_complete(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, | |
1605 | int frag_count, int len) | |
1606 | { | |
1607 | skfddi_priv *bp = &smc->os; | |
1608 | struct sk_buff *skb; | |
1609 | unsigned char *virt, *cp; | |
1610 | unsigned short ri; | |
1611 | u_int RifLength; | |
1612 | ||
1613 | PRINTK(KERN_INFO "entering mac_drv_rx_complete (len=%d)\n", len); | |
1614 | if (frag_count != 1) { // This is not allowed to happen. | |
1615 | ||
1616 | printk("fddi: Multi-fragment receive!\n"); | |
1617 | goto RequeueRxd; // Re-use the given RXD(s). | |
1618 | ||
1619 | } | |
1620 | skb = rxd->rxd_os.skb; | |
1621 | if (!skb) { | |
1622 | PRINTK(KERN_INFO "No skb in rxd\n"); | |
1623 | smc->os.MacStat.gen.rx_errors++; | |
1624 | goto RequeueRxd; | |
1625 | } | |
1626 | virt = skb->data; | |
1627 | ||
1628 | // The DMA mapping was released in dma_complete above. | |
1629 | ||
1630 | dump_data(skb->data, len); | |
1631 | ||
1632 | /* | |
1633 | * FDDI Frame format: | |
1634 | * +-------+-------+-------+------------+--------+------------+ | |
1635 | * | FC[1] | DA[6] | SA[6] | RIF[0..18] | LLC[3] | Data[0..n] | | |
1636 | * +-------+-------+-------+------------+--------+------------+ | |
1637 | * | |
1638 | * FC = Frame Control | |
1639 | * DA = Destination Address | |
1640 | * SA = Source Address | |
1641 | * RIF = Routing Information Field | |
1642 | * LLC = Logical Link Control | |
1643 | */ | |
1644 | ||
1645 | // Remove Routing Information Field (RIF), if present. | |
1646 | ||
1647 | if ((virt[1 + 6] & FDDI_RII) == 0) | |
1648 | RifLength = 0; | |
1649 | else { | |
1650 | int n; | |
1651 | // goos: RIF removal has still to be tested | |
1652 | PRINTK(KERN_INFO "RIF found\n"); | |
1653 | // Get RIF length from Routing Control (RC) field. | |
1654 | cp = virt + FDDI_MAC_HDR_LEN; // Point behind MAC header. | |
1655 | ||
1656 | ri = ntohs(*((unsigned short *) cp)); | |
1657 | RifLength = ri & FDDI_RCF_LEN_MASK; | |
1658 | if (len < (int) (FDDI_MAC_HDR_LEN + RifLength)) { | |
1659 | printk("fddi: Invalid RIF.\n"); | |
1660 | goto RequeueRxd; // Discard the frame. | |
1661 | ||
1662 | } | |
1663 | virt[1 + 6] &= ~FDDI_RII; // Clear RII bit. | |
1664 | // regions overlap | |
1665 | ||
1666 | virt = cp + RifLength; | |
1667 | for (n = FDDI_MAC_HDR_LEN; n; n--) | |
1668 | *--virt = *--cp; | |
1669 | // adjust sbd->data pointer | |
1670 | skb_pull(skb, RifLength); | |
1671 | len -= RifLength; | |
1672 | RifLength = 0; | |
1673 | } | |
1674 | ||
1675 | // Count statistics. | |
1676 | smc->os.MacStat.gen.rx_packets++; // Count indicated receive | |
1677 | // packets. | |
1678 | smc->os.MacStat.gen.rx_bytes+=len; // Count bytes. | |
1679 | ||
1680 | // virt points to header again | |
1681 | if (virt[1] & 0x01) { // Check group (multicast) bit. | |
1682 | ||
1683 | smc->os.MacStat.gen.multicast++; | |
1684 | } | |
1685 | ||
1686 | // deliver frame to system | |
1687 | rxd->rxd_os.skb = NULL; | |
1688 | skb_trim(skb, len); | |
1689 | skb->protocol = fddi_type_trans(skb, bp->dev); | |
1690 | skb->dev = bp->dev; /* pass up device pointer */ | |
1691 | ||
1692 | netif_rx(skb); | |
1693 | bp->dev->last_rx = jiffies; | |
1694 | ||
1695 | HWM_RX_CHECK(smc, RX_LOW_WATERMARK); | |
1696 | return; | |
1697 | ||
1698 | RequeueRxd: | |
1699 | PRINTK(KERN_INFO "Rx: re-queue RXD.\n"); | |
1700 | mac_drv_requeue_rxd(smc, rxd, frag_count); | |
1701 | smc->os.MacStat.gen.rx_errors++; // Count receive packets | |
1702 | // not indicated. | |
1703 | ||
1704 | } // mac_drv_rx_complete | |
1705 | ||
1706 | ||
1707 | /************************ | |
1708 | * | |
1709 | * mac_drv_requeue_rxd | |
1710 | * | |
1711 | * The hardware module calls this function to request the OS-specific | |
1712 | * module to queue the receive buffer(s) represented by the pointer | |
1713 | * to the RxD and the frag_count into the receive queue again. This | |
1714 | * buffer was filled with an invalid frame or an SMT frame. | |
1715 | * Args | |
1716 | * smc - A pointer to the SMT context struct. | |
1717 | * | |
1718 | * rxd - A pointer to the first RxD which is used by the receive frame. | |
1719 | * | |
1720 | * frag_count - Count of RxDs used by the received frame. | |
1721 | * Out | |
1722 | * Nothing. | |
1723 | * | |
1724 | ************************/ | |
1725 | void mac_drv_requeue_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, | |
1726 | int frag_count) | |
1727 | { | |
1728 | volatile struct s_smt_fp_rxd *next_rxd; | |
1729 | volatile struct s_smt_fp_rxd *src_rxd; | |
1730 | struct sk_buff *skb; | |
1731 | int MaxFrameSize; | |
1732 | unsigned char *v_addr; | |
1733 | dma_addr_t b_addr; | |
1734 | ||
1735 | if (frag_count != 1) // This is not allowed to happen. | |
1736 | ||
1737 | printk("fddi: Multi-fragment requeue!\n"); | |
1738 | ||
1739 | MaxFrameSize = smc->os.MaxFrameSize; | |
1740 | src_rxd = rxd; | |
1741 | for (; frag_count > 0; frag_count--) { | |
1742 | next_rxd = src_rxd->rxd_next; | |
1743 | rxd = HWM_GET_CURR_RXD(smc); | |
1744 | ||
1745 | skb = src_rxd->rxd_os.skb; | |
1746 | if (skb == NULL) { // this should not happen | |
1747 | ||
1748 | PRINTK("Requeue with no skb in rxd!\n"); | |
1749 | skb = alloc_skb(MaxFrameSize + 3, GFP_ATOMIC); | |
1750 | if (skb) { | |
1751 | // we got a skb | |
1752 | rxd->rxd_os.skb = skb; | |
1753 | skb_reserve(skb, 3); | |
1754 | skb_put(skb, MaxFrameSize); | |
1755 | v_addr = skb->data; | |
1756 | b_addr = pci_map_single(&smc->os.pdev, | |
1757 | v_addr, | |
1758 | MaxFrameSize, | |
1759 | PCI_DMA_FROMDEVICE); | |
1760 | rxd->rxd_os.dma_addr = b_addr; | |
1761 | } else { | |
1762 | // no skb available, use local buffer | |
1763 | PRINTK("Queueing invalid buffer!\n"); | |
1764 | rxd->rxd_os.skb = NULL; | |
1765 | v_addr = smc->os.LocalRxBuffer; | |
1766 | b_addr = smc->os.LocalRxBufferDMA; | |
1767 | } | |
1768 | } else { | |
1769 | // we use skb from old rxd | |
1770 | rxd->rxd_os.skb = skb; | |
1771 | v_addr = skb->data; | |
1772 | b_addr = pci_map_single(&smc->os.pdev, | |
1773 | v_addr, | |
1774 | MaxFrameSize, | |
1775 | PCI_DMA_FROMDEVICE); | |
1776 | rxd->rxd_os.dma_addr = b_addr; | |
1777 | } | |
1778 | hwm_rx_frag(smc, v_addr, b_addr, MaxFrameSize, | |
1779 | FIRST_FRAG | LAST_FRAG); | |
1780 | ||
1781 | src_rxd = next_rxd; | |
1782 | } | |
1783 | } // mac_drv_requeue_rxd | |
1784 | ||
1785 | ||
1786 | /************************ | |
1787 | * | |
1788 | * mac_drv_fill_rxd | |
1789 | * | |
1790 | * The hardware module calls this function at initialization time | |
1791 | * to fill the RxD ring with receive buffers. It is also called by | |
1792 | * mac_drv_rx_complete if rx_free is large enough to queue some new | |
1793 | * receive buffers into the RxD ring. mac_drv_fill_rxd queues new | |
1794 | * receive buffers as long as enough RxDs and receive buffers are | |
1795 | * available. | |
1796 | * Args | |
1797 | * smc - A pointer to the SMT context struct. | |
1798 | * Out | |
1799 | * Nothing. | |
1800 | * | |
1801 | ************************/ | |
1802 | void mac_drv_fill_rxd(struct s_smc *smc) | |
1803 | { | |
1804 | int MaxFrameSize; | |
1805 | unsigned char *v_addr; | |
1806 | unsigned long b_addr; | |
1807 | struct sk_buff *skb; | |
1808 | volatile struct s_smt_fp_rxd *rxd; | |
1809 | ||
1810 | PRINTK(KERN_INFO "entering mac_drv_fill_rxd\n"); | |
1811 | ||
1812 | // Walk through the list of free receive buffers, passing receive | |
1813 | // buffers to the HWM as long as RXDs are available. | |
1814 | ||
1815 | MaxFrameSize = smc->os.MaxFrameSize; | |
1816 | // Check if there is any RXD left. | |
1817 | while (HWM_GET_RX_FREE(smc) > 0) { | |
1818 | PRINTK(KERN_INFO ".\n"); | |
1819 | ||
1820 | rxd = HWM_GET_CURR_RXD(smc); | |
1821 | skb = alloc_skb(MaxFrameSize + 3, GFP_ATOMIC); | |
1822 | if (skb) { | |
1823 | // we got a skb | |
1824 | skb_reserve(skb, 3); | |
1825 | skb_put(skb, MaxFrameSize); | |
1826 | v_addr = skb->data; | |
1827 | b_addr = pci_map_single(&smc->os.pdev, | |
1828 | v_addr, | |
1829 | MaxFrameSize, | |
1830 | PCI_DMA_FROMDEVICE); | |
1831 | rxd->rxd_os.dma_addr = b_addr; | |
1832 | } else { | |
1833 | // no skb available, use local buffer | |
1834 | // System has run out of buffer memory, but we want to | |
1835 | // keep the receiver running in hope of better times. | |
1836 | // Multiple descriptors may point to this local buffer, | |
1837 | // so data in it must be considered invalid. | |
1838 | PRINTK("Queueing invalid buffer!\n"); | |
1839 | v_addr = smc->os.LocalRxBuffer; | |
1840 | b_addr = smc->os.LocalRxBufferDMA; | |
1841 | } | |
1842 | ||
1843 | rxd->rxd_os.skb = skb; | |
1844 | ||
1845 | // Pass receive buffer to HWM. | |
1846 | hwm_rx_frag(smc, v_addr, b_addr, MaxFrameSize, | |
1847 | FIRST_FRAG | LAST_FRAG); | |
1848 | } | |
1849 | PRINTK(KERN_INFO "leaving mac_drv_fill_rxd\n"); | |
1850 | } // mac_drv_fill_rxd | |
1851 | ||
1852 | ||
1853 | /************************ | |
1854 | * | |
1855 | * mac_drv_clear_rxd | |
1856 | * | |
1857 | * The hardware module calls this function to release unused | |
1858 | * receive buffers. | |
1859 | * Args | |
1860 | * smc - A pointer to the SMT context struct. | |
1861 | * | |
1862 | * rxd - A pointer to the first RxD which is used by the receive buffer. | |
1863 | * | |
1864 | * frag_count - Count of RxDs used by the receive buffer. | |
1865 | * Out | |
1866 | * Nothing. | |
1867 | * | |
1868 | ************************/ | |
1869 | void mac_drv_clear_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, | |
1870 | int frag_count) | |
1871 | { | |
1872 | ||
1873 | struct sk_buff *skb; | |
1874 | ||
1875 | PRINTK("entering mac_drv_clear_rxd\n"); | |
1876 | ||
1877 | if (frag_count != 1) // This is not allowed to happen. | |
1878 | ||
1879 | printk("fddi: Multi-fragment clear!\n"); | |
1880 | ||
1881 | for (; frag_count > 0; frag_count--) { | |
1882 | skb = rxd->rxd_os.skb; | |
1883 | if (skb != NULL) { | |
1884 | skfddi_priv *bp = &smc->os; | |
1885 | int MaxFrameSize = bp->MaxFrameSize; | |
1886 | ||
1887 | pci_unmap_single(&bp->pdev, rxd->rxd_os.dma_addr, | |
1888 | MaxFrameSize, PCI_DMA_FROMDEVICE); | |
1889 | ||
1890 | dev_kfree_skb(skb); | |
1891 | rxd->rxd_os.skb = NULL; | |
1892 | } | |
1893 | rxd = rxd->rxd_next; // Next RXD. | |
1894 | ||
1895 | } | |
1896 | } // mac_drv_clear_rxd | |
1897 | ||
1898 | ||
1899 | /************************ | |
1900 | * | |
1901 | * mac_drv_rx_init | |
1902 | * | |
1903 | * The hardware module calls this routine when an SMT or NSA frame of the | |
1904 | * local SMT should be delivered to the LLC layer. | |
1905 | * | |
1906 | * It is necessary to have this function, because there is no other way to | |
1907 | * copy the contents of SMT MBufs into receive buffers. | |
1908 | * | |
1909 | * mac_drv_rx_init allocates the required target memory for this frame, | |
1910 | * and receives the frame fragment by fragment by calling mac_drv_rx_frag. | |
1911 | * Args | |
1912 | * smc - A pointer to the SMT context struct. | |
1913 | * | |
1914 | * len - The length (in bytes) of the received frame (FC, DA, SA, Data). | |
1915 | * | |
1916 | * fc - The Frame Control field of the received frame. | |
1917 | * | |
1918 | * look_ahead - A pointer to the lookahead data buffer (may be NULL). | |
1919 | * | |
1920 | * la_len - The length of the lookahead data stored in the lookahead | |
1921 | * buffer (may be zero). | |
1922 | * Out | |
1923 | * Always returns zero (0). | |
1924 | * | |
1925 | ************************/ | |
1926 | int mac_drv_rx_init(struct s_smc *smc, int len, int fc, | |
1927 | char *look_ahead, int la_len) | |
1928 | { | |
1929 | struct sk_buff *skb; | |
1930 | ||
1931 | PRINTK("entering mac_drv_rx_init(len=%d)\n", len); | |
1932 | ||
1933 | // "Received" a SMT or NSA frame of the local SMT. | |
1934 | ||
1935 | if (len != la_len || len < FDDI_MAC_HDR_LEN || !look_ahead) { | |
1936 | PRINTK("fddi: Discard invalid local SMT frame\n"); | |
1937 | PRINTK(" len=%d, la_len=%d, (ULONG) look_ahead=%08lXh.\n", | |
1938 | len, la_len, (unsigned long) look_ahead); | |
1939 | return (0); | |
1940 | } | |
1941 | skb = alloc_skb(len + 3, GFP_ATOMIC); | |
1942 | if (!skb) { | |
1943 | PRINTK("fddi: Local SMT: skb memory exhausted.\n"); | |
1944 | return (0); | |
1945 | } | |
1946 | skb_reserve(skb, 3); | |
1947 | skb_put(skb, len); | |
1948 | memcpy(skb->data, look_ahead, len); | |
1949 | ||
1950 | // deliver frame to system | |
1951 | skb->protocol = fddi_type_trans(skb, smc->os.dev); | |
1952 | skb->dev->last_rx = jiffies; | |
1953 | netif_rx(skb); | |
1954 | ||
1955 | return (0); | |
1956 | } // mac_drv_rx_init | |
1957 | ||
1958 | ||
1959 | /************************ | |
1960 | * | |
1961 | * smt_timer_poll | |
1962 | * | |
1963 | * This routine is called periodically by the SMT module to clean up the | |
1964 | * driver. | |
1965 | * | |
1966 | * Return any queued frames back to the upper protocol layers if the ring | |
1967 | * is down. | |
1968 | * Args | |
1969 | * smc - A pointer to the SMT context struct. | |
1970 | * Out | |
1971 | * Nothing. | |
1972 | * | |
1973 | ************************/ | |
1974 | void smt_timer_poll(struct s_smc *smc) | |
1975 | { | |
1976 | } // smt_timer_poll | |
1977 | ||
1978 | ||
1979 | /************************ | |
1980 | * | |
1981 | * ring_status_indication | |
1982 | * | |
1983 | * This function indicates a change of the ring state. | |
1984 | * Args | |
1985 | * smc - A pointer to the SMT context struct. | |
1986 | * | |
1987 | * status - The current ring status. | |
1988 | * Out | |
1989 | * Nothing. | |
1990 | * | |
1991 | ************************/ | |
1992 | void ring_status_indication(struct s_smc *smc, u_long status) | |
1993 | { | |
1994 | PRINTK("ring_status_indication( "); | |
1995 | if (status & RS_RES15) | |
1996 | PRINTK("RS_RES15 "); | |
1997 | if (status & RS_HARDERROR) | |
1998 | PRINTK("RS_HARDERROR "); | |
1999 | if (status & RS_SOFTERROR) | |
2000 | PRINTK("RS_SOFTERROR "); | |
2001 | if (status & RS_BEACON) | |
2002 | PRINTK("RS_BEACON "); | |
2003 | if (status & RS_PATHTEST) | |
2004 | PRINTK("RS_PATHTEST "); | |
2005 | if (status & RS_SELFTEST) | |
2006 | PRINTK("RS_SELFTEST "); | |
2007 | if (status & RS_RES9) | |
2008 | PRINTK("RS_RES9 "); | |
2009 | if (status & RS_DISCONNECT) | |
2010 | PRINTK("RS_DISCONNECT "); | |
2011 | if (status & RS_RES7) | |
2012 | PRINTK("RS_RES7 "); | |
2013 | if (status & RS_DUPADDR) | |
2014 | PRINTK("RS_DUPADDR "); | |
2015 | if (status & RS_NORINGOP) | |
2016 | PRINTK("RS_NORINGOP "); | |
2017 | if (status & RS_VERSION) | |
2018 | PRINTK("RS_VERSION "); | |
2019 | if (status & RS_STUCKBYPASSS) | |
2020 | PRINTK("RS_STUCKBYPASSS "); | |
2021 | if (status & RS_EVENT) | |
2022 | PRINTK("RS_EVENT "); | |
2023 | if (status & RS_RINGOPCHANGE) | |
2024 | PRINTK("RS_RINGOPCHANGE "); | |
2025 | if (status & RS_RES0) | |
2026 | PRINTK("RS_RES0 "); | |
2027 | PRINTK("]\n"); | |
2028 | } // ring_status_indication | |
2029 | ||
2030 | ||
2031 | /************************ | |
2032 | * | |
2033 | * smt_get_time | |
2034 | * | |
2035 | * Gets the current time from the system. | |
2036 | * Args | |
2037 | * None. | |
2038 | * Out | |
2039 | * The current time in TICKS_PER_SECOND. | |
2040 | * | |
2041 | * TICKS_PER_SECOND has the unit 'count of timer ticks per second'. It is | |
2042 | * defined in "targetos.h". The definition of TICKS_PER_SECOND must comply | |
2043 | * to the time returned by smt_get_time(). | |
2044 | * | |
2045 | ************************/ | |
2046 | unsigned long smt_get_time(void) | |
2047 | { | |
2048 | return jiffies; | |
2049 | } // smt_get_time | |
2050 | ||
2051 | ||
2052 | /************************ | |
2053 | * | |
2054 | * smt_stat_counter | |
2055 | * | |
2056 | * Status counter update (ring_op, fifo full). | |
2057 | * Args | |
2058 | * smc - A pointer to the SMT context struct. | |
2059 | * | |
2060 | * stat - = 0: A ring operational change occurred. | |
2061 | * = 1: The FORMAC FIFO buffer is full / FIFO overflow. | |
2062 | * Out | |
2063 | * Nothing. | |
2064 | * | |
2065 | ************************/ | |
2066 | void smt_stat_counter(struct s_smc *smc, int stat) | |
2067 | { | |
2068 | // BOOLEAN RingIsUp ; | |
2069 | ||
2070 | PRINTK(KERN_INFO "smt_stat_counter\n"); | |
2071 | switch (stat) { | |
2072 | case 0: | |
2073 | PRINTK(KERN_INFO "Ring operational change.\n"); | |
2074 | break; | |
2075 | case 1: | |
2076 | PRINTK(KERN_INFO "Receive fifo overflow.\n"); | |
2077 | smc->os.MacStat.gen.rx_errors++; | |
2078 | break; | |
2079 | default: | |
2080 | PRINTK(KERN_INFO "Unknown status (%d).\n", stat); | |
2081 | break; | |
2082 | } | |
2083 | } // smt_stat_counter | |
2084 | ||
2085 | ||
2086 | /************************ | |
2087 | * | |
2088 | * cfm_state_change | |
2089 | * | |
2090 | * Sets CFM state in custom statistics. | |
2091 | * Args | |
2092 | * smc - A pointer to the SMT context struct. | |
2093 | * | |
2094 | * c_state - Possible values are: | |
2095 | * | |
2096 | * EC0_OUT, EC1_IN, EC2_TRACE, EC3_LEAVE, EC4_PATH_TEST, | |
2097 | * EC5_INSERT, EC6_CHECK, EC7_DEINSERT | |
2098 | * Out | |
2099 | * Nothing. | |
2100 | * | |
2101 | ************************/ | |
2102 | void cfm_state_change(struct s_smc *smc, int c_state) | |
2103 | { | |
2104 | #ifdef DRIVERDEBUG | |
2105 | char *s; | |
2106 | ||
2107 | switch (c_state) { | |
2108 | case SC0_ISOLATED: | |
2109 | s = "SC0_ISOLATED"; | |
2110 | break; | |
2111 | case SC1_WRAP_A: | |
2112 | s = "SC1_WRAP_A"; | |
2113 | break; | |
2114 | case SC2_WRAP_B: | |
2115 | s = "SC2_WRAP_B"; | |
2116 | break; | |
2117 | case SC4_THRU_A: | |
2118 | s = "SC4_THRU_A"; | |
2119 | break; | |
2120 | case SC5_THRU_B: | |
2121 | s = "SC5_THRU_B"; | |
2122 | break; | |
2123 | case SC7_WRAP_S: | |
2124 | s = "SC7_WRAP_S"; | |
2125 | break; | |
2126 | case SC9_C_WRAP_A: | |
2127 | s = "SC9_C_WRAP_A"; | |
2128 | break; | |
2129 | case SC10_C_WRAP_B: | |
2130 | s = "SC10_C_WRAP_B"; | |
2131 | break; | |
2132 | case SC11_C_WRAP_S: | |
2133 | s = "SC11_C_WRAP_S"; | |
2134 | break; | |
2135 | default: | |
2136 | PRINTK(KERN_INFO "cfm_state_change: unknown %d\n", c_state); | |
2137 | return; | |
2138 | } | |
2139 | PRINTK(KERN_INFO "cfm_state_change: %s\n", s); | |
2140 | #endif // DRIVERDEBUG | |
2141 | } // cfm_state_change | |
2142 | ||
2143 | ||
2144 | /************************ | |
2145 | * | |
2146 | * ecm_state_change | |
2147 | * | |
2148 | * Sets ECM state in custom statistics. | |
2149 | * Args | |
2150 | * smc - A pointer to the SMT context struct. | |
2151 | * | |
2152 | * e_state - Possible values are: | |
2153 | * | |
2154 | * SC0_ISOLATED, SC1_WRAP_A (5), SC2_WRAP_B (6), SC4_THRU_A (12), | |
2155 | * SC5_THRU_B (7), SC7_WRAP_S (8) | |
2156 | * Out | |
2157 | * Nothing. | |
2158 | * | |
2159 | ************************/ | |
2160 | void ecm_state_change(struct s_smc *smc, int e_state) | |
2161 | { | |
2162 | #ifdef DRIVERDEBUG | |
2163 | char *s; | |
2164 | ||
2165 | switch (e_state) { | |
2166 | case EC0_OUT: | |
2167 | s = "EC0_OUT"; | |
2168 | break; | |
2169 | case EC1_IN: | |
2170 | s = "EC1_IN"; | |
2171 | break; | |
2172 | case EC2_TRACE: | |
2173 | s = "EC2_TRACE"; | |
2174 | break; | |
2175 | case EC3_LEAVE: | |
2176 | s = "EC3_LEAVE"; | |
2177 | break; | |
2178 | case EC4_PATH_TEST: | |
2179 | s = "EC4_PATH_TEST"; | |
2180 | break; | |
2181 | case EC5_INSERT: | |
2182 | s = "EC5_INSERT"; | |
2183 | break; | |
2184 | case EC6_CHECK: | |
2185 | s = "EC6_CHECK"; | |
2186 | break; | |
2187 | case EC7_DEINSERT: | |
2188 | s = "EC7_DEINSERT"; | |
2189 | break; | |
2190 | default: | |
2191 | s = "unknown"; | |
2192 | break; | |
2193 | } | |
2194 | PRINTK(KERN_INFO "ecm_state_change: %s\n", s); | |
2195 | #endif //DRIVERDEBUG | |
2196 | } // ecm_state_change | |
2197 | ||
2198 | ||
2199 | /************************ | |
2200 | * | |
2201 | * rmt_state_change | |
2202 | * | |
2203 | * Sets RMT state in custom statistics. | |
2204 | * Args | |
2205 | * smc - A pointer to the SMT context struct. | |
2206 | * | |
2207 | * r_state - Possible values are: | |
2208 | * | |
2209 | * RM0_ISOLATED, RM1_NON_OP, RM2_RING_OP, RM3_DETECT, | |
2210 | * RM4_NON_OP_DUP, RM5_RING_OP_DUP, RM6_DIRECTED, RM7_TRACE | |
2211 | * Out | |
2212 | * Nothing. | |
2213 | * | |
2214 | ************************/ | |
2215 | void rmt_state_change(struct s_smc *smc, int r_state) | |
2216 | { | |
2217 | #ifdef DRIVERDEBUG | |
2218 | char *s; | |
2219 | ||
2220 | switch (r_state) { | |
2221 | case RM0_ISOLATED: | |
2222 | s = "RM0_ISOLATED"; | |
2223 | break; | |
2224 | case RM1_NON_OP: | |
2225 | s = "RM1_NON_OP - not operational"; | |
2226 | break; | |
2227 | case RM2_RING_OP: | |
2228 | s = "RM2_RING_OP - ring operational"; | |
2229 | break; | |
2230 | case RM3_DETECT: | |
2231 | s = "RM3_DETECT - detect dupl addresses"; | |
2232 | break; | |
2233 | case RM4_NON_OP_DUP: | |
2234 | s = "RM4_NON_OP_DUP - dupl. addr detected"; | |
2235 | break; | |
2236 | case RM5_RING_OP_DUP: | |
2237 | s = "RM5_RING_OP_DUP - ring oper. with dupl. addr"; | |
2238 | break; | |
2239 | case RM6_DIRECTED: | |
2240 | s = "RM6_DIRECTED - sending directed beacons"; | |
2241 | break; | |
2242 | case RM7_TRACE: | |
2243 | s = "RM7_TRACE - trace initiated"; | |
2244 | break; | |
2245 | default: | |
2246 | s = "unknown"; | |
2247 | break; | |
2248 | } | |
2249 | PRINTK(KERN_INFO "[rmt_state_change: %s]\n", s); | |
2250 | #endif // DRIVERDEBUG | |
2251 | } // rmt_state_change | |
2252 | ||
2253 | ||
2254 | /************************ | |
2255 | * | |
2256 | * drv_reset_indication | |
2257 | * | |
2258 | * This function is called by the SMT when it has detected a severe | |
2259 | * hardware problem. The driver should perform a reset on the adapter | |
2260 | * as soon as possible, but not from within this function. | |
2261 | * Args | |
2262 | * smc - A pointer to the SMT context struct. | |
2263 | * Out | |
2264 | * Nothing. | |
2265 | * | |
2266 | ************************/ | |
2267 | void drv_reset_indication(struct s_smc *smc) | |
2268 | { | |
2269 | PRINTK(KERN_INFO "entering drv_reset_indication\n"); | |
2270 | ||
2271 | smc->os.ResetRequested = TRUE; // Set flag. | |
2272 | ||
2273 | } // drv_reset_indication | |
2274 | ||
2275 | static struct pci_driver skfddi_pci_driver = { | |
2276 | .name = "skfddi", | |
2277 | .id_table = skfddi_pci_tbl, | |
2278 | .probe = skfp_init_one, | |
2279 | .remove = __devexit_p(skfp_remove_one), | |
2280 | }; | |
2281 | ||
2282 | static int __init skfd_init(void) | |
2283 | { | |
2284 | return pci_module_init(&skfddi_pci_driver); | |
2285 | } | |
2286 | ||
2287 | static void __exit skfd_exit(void) | |
2288 | { | |
2289 | pci_unregister_driver(&skfddi_pci_driver); | |
2290 | } | |
2291 | ||
2292 | module_init(skfd_init); | |
2293 | module_exit(skfd_exit); |