1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * File Name: |
4 | * skfddi.c |
5 | * |
6 | * Copyright Information: |
7 | * Copyright SysKonnect 1998,1999. |
8 | * |
9 | * The information in this file is provided "AS IS" without warranty. |
10 | * |
11 | * Abstract: |
12 | * A Linux device driver supporting the SysKonnect FDDI PCI controller |
13 | * familie. |
14 | * |
15 | * Maintainers: |
16 | * CG Christoph Goos (cgoos@syskonnect.de) |
17 | * |
18 | * Contributors: |
19 | * DM David S. Miller |
20 | * |
21 | * Address all question to: |
22 | * linux@syskonnect.de |
23 | * |
24 | * The technical manual for the adapters is available from SysKonnect's |
25 | * web pages: www.syskonnect.com |
26 | * Goto "Support" and search Knowledge Base for "manual". |
27 | * |
28 | * Driver Architecture: |
29 | * The driver architecture is based on the DEC FDDI driver by |
30 | * Lawrence V. Stefani and several ethernet drivers. |
31 | * I also used an existing Windows NT miniport driver. |
32 | * All hardware dependent functions are handled by the SysKonnect |
33 | * Hardware Module. |
34 | * The only headerfiles that are directly related to this source |
35 | * are skfddi.c, h/types.h, h/osdef1st.h, h/targetos.h. |
36 | * The others belong to the SysKonnect FDDI Hardware Module and |
37 | * should better not be changed. |
38 | * |
39 | * Modification History: |
40 | * Date Name Description |
41 | * 02-Mar-98 CG Created. |
42 | * |
43 | * 10-Mar-99 CG Support for 2.2.x added. |
44 | * 25-Mar-99 CG Corrected IRQ routing for SMP (APIC) |
45 | * 26-Oct-99 CG Fixed compilation error on 2.2.13 |
46 | * 12-Nov-99 CG Source code release |
47 | * 22-Nov-99 CG Included in kernel source. |
48 | * 07-May-00 DM 64 bit fixes, new dma interface |
49 | * 31-Jul-03 DB Audit copy_*_user in skfp_ioctl |
50 | * Daniele Bellucci <bellucda@tiscali.it> |
51 | * 03-Dec-03 SH Convert to PCI device model |
52 | * |
53 | * Compilation options (-Dxxx): |
54 | * DRIVERDEBUG print lots of messages to log file |
55 | * DUMPPACKETS print received/transmitted packets to logfile |
56 | * |
57 | * Tested cpu architectures: |
58 | * - i386 |
59 | * - sparc64 |
60 | */ |
61 | |
62 | /* Version information string - should be updated prior to */ |
63 | /* each new release!!! */ |
64 | #define VERSION "2.07" |
65 | |
66 | static const char * const boot_msg = |
67 | "SysKonnect FDDI PCI Adapter driver v" VERSION " for\n" |
68 | " SK-55xx/SK-58xx adapters (SK-NET FDDI-FP/UP/LP)" ; |
69 | |
70 | /* Include files */ |
71 | |
72 | #include <linux/capability.h> |
73 | #include <linux/compat.h> |
74 | #include <linux/module.h> |
75 | #include <linux/kernel.h> |
76 | #include <linux/errno.h> |
77 | #include <linux/ioport.h> |
78 | #include <linux/interrupt.h> |
79 | #include <linux/pci.h> |
80 | #include <linux/netdevice.h> |
81 | #include <linux/etherdevice.h> |
82 | #include <linux/fddidevice.h> |
83 | #include <linux/skbuff.h> |
84 | #include <linux/bitops.h> |
85 | #include <linux/gfp.h> |
86 | |
87 | #include <asm/byteorder.h> |
88 | #include <asm/io.h> |
89 | #include <linux/uaccess.h> |
90 | |
91 | #include "h/types.h" |
92 | #undef ADDR // undo Linux definition |
93 | #include "h/skfbi.h" |
94 | #include "h/fddi.h" |
95 | #include "h/smc.h" |
96 | #include "h/smtstate.h" |
97 | |
98 | |
99 | // Define module-wide (static) routines |
100 | static int skfp_driver_init(struct net_device *dev); |
101 | static int skfp_open(struct net_device *dev); |
102 | static int skfp_close(struct net_device *dev); |
103 | static irqreturn_t skfp_interrupt(int irq, void *dev_id); |
104 | static struct net_device_stats *skfp_ctl_get_stats(struct net_device *dev); |
105 | static void skfp_ctl_set_multicast_list(struct net_device *dev); |
106 | static void skfp_ctl_set_multicast_list_wo_lock(struct net_device *dev); |
107 | static int skfp_ctl_set_mac_address(struct net_device *dev, void *addr); |
108 | static int skfp_siocdevprivate(struct net_device *dev, struct ifreq *rq, |
109 | void __user *data, int cmd); |
110 | static netdev_tx_t skfp_send_pkt(struct sk_buff *skb, |
111 | struct net_device *dev); |
112 | static void send_queued_packets(struct s_smc *smc); |
113 | static void CheckSourceAddress(unsigned char *frame, unsigned char *hw_addr); |
114 | static void ResetAdapter(struct s_smc *smc); |
115 | |
116 | |
117 | // Functions needed by the hardware module |
118 | void *mac_drv_get_space(struct s_smc *smc, u_int size); |
119 | void *mac_drv_get_desc_mem(struct s_smc *smc, u_int size); |
120 | unsigned long mac_drv_virt2phys(struct s_smc *smc, void *virt); |
121 | unsigned long dma_master(struct s_smc *smc, void *virt, int len, int flag); |
122 | void dma_complete(struct s_smc *smc, volatile union s_fp_descr *descr, |
123 | int flag); |
124 | void mac_drv_tx_complete(struct s_smc *smc, volatile struct s_smt_fp_txd *txd); |
125 | void llc_restart_tx(struct s_smc *smc); |
126 | void mac_drv_rx_complete(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, |
127 | int frag_count, int len); |
128 | void mac_drv_requeue_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, |
129 | int frag_count); |
130 | void mac_drv_fill_rxd(struct s_smc *smc); |
131 | void mac_drv_clear_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, |
132 | int frag_count); |
133 | int mac_drv_rx_init(struct s_smc *smc, int len, int fc, char *look_ahead, |
134 | int la_len); |
135 | void dump_data(unsigned char *Data, int length); |
136 | |
137 | // External functions from the hardware module |
138 | extern u_int mac_drv_check_space(void); |
139 | extern int mac_drv_init(struct s_smc *smc); |
140 | extern void hwm_tx_frag(struct s_smc *smc, char far * virt, u_long phys, |
141 | int len, int frame_status); |
142 | extern int hwm_tx_init(struct s_smc *smc, u_char fc, int frag_count, |
143 | int frame_len, int frame_status); |
144 | extern void fddi_isr(struct s_smc *smc); |
145 | extern void hwm_rx_frag(struct s_smc *smc, char far * virt, u_long phys, |
146 | int len, int frame_status); |
147 | extern void mac_drv_rx_mode(struct s_smc *smc, int mode); |
148 | extern void mac_drv_clear_rx_queue(struct s_smc *smc); |
149 | extern void enable_tx_irq(struct s_smc *smc, u_short queue); |
150 | |
151 | static const struct pci_device_id skfddi_pci_tbl[] = { |
152 | { PCI_VENDOR_ID_SK, PCI_DEVICE_ID_SK_FP, PCI_ANY_ID, PCI_ANY_ID, }, |
153 | { } /* Terminating entry */ |
154 | }; |
155 | MODULE_DEVICE_TABLE(pci, skfddi_pci_tbl); |
156 | MODULE_DESCRIPTION("SysKonnect FDDI PCI driver" ); |
157 | MODULE_LICENSE("GPL" ); |
158 | MODULE_AUTHOR("Mirko Lindner <mlindner@syskonnect.de>" ); |
159 | |
160 | // Define module-wide (static) variables |
161 | |
162 | static int num_boards; /* total number of adapters configured */ |
163 | |
164 | static const struct net_device_ops skfp_netdev_ops = { |
165 | .ndo_open = skfp_open, |
166 | .ndo_stop = skfp_close, |
167 | .ndo_start_xmit = skfp_send_pkt, |
168 | .ndo_get_stats = skfp_ctl_get_stats, |
169 | .ndo_set_rx_mode = skfp_ctl_set_multicast_list, |
170 | .ndo_set_mac_address = skfp_ctl_set_mac_address, |
171 | .ndo_siocdevprivate = skfp_siocdevprivate, |
172 | }; |
173 | |
174 | /* |
175 | * ================= |
176 | * = skfp_init_one = |
177 | * ================= |
178 | * |
179 | * Overview: |
180 | * Probes for supported FDDI PCI controllers |
181 | * |
182 | * Returns: |
183 | * Condition code |
184 | * |
185 | * Arguments: |
186 | * pdev - pointer to PCI device information |
187 | * |
188 | * Functional Description: |
189 | * This is now called by PCI driver registration process |
190 | * for each board found. |
191 | * |
192 | * Return Codes: |
193 | * 0 - This device (fddi0, fddi1, etc) configured successfully |
194 | * -ENODEV - No devices present, or no SysKonnect FDDI PCI device |
195 | * present for this device name |
196 | * |
197 | * |
198 | * Side Effects: |
199 | * Device structures for FDDI adapters (fddi0, fddi1, etc) are |
200 | * initialized and the board resources are read and stored in |
201 | * the device structure. |
202 | */ |
203 | static int skfp_init_one(struct pci_dev *pdev, |
204 | const struct pci_device_id *ent) |
205 | { |
206 | struct net_device *dev; |
207 | struct s_smc *smc; /* board pointer */ |
208 | void __iomem *mem; |
209 | int err; |
210 | |
211 | pr_debug("entering skfp_init_one\n" ); |
212 | |
213 | if (num_boards == 0) |
214 | printk("%s\n" , boot_msg); |
215 | |
216 | err = pci_enable_device(dev: pdev); |
217 | if (err) |
218 | return err; |
219 | |
220 | err = pci_request_regions(pdev, "skfddi" ); |
221 | if (err) |
222 | goto err_out1; |
223 | |
224 | pci_set_master(dev: pdev); |
225 | |
226 | #ifdef MEM_MAPPED_IO |
227 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { |
228 | printk(KERN_ERR "skfp: region is not an MMIO resource\n" ); |
229 | err = -EIO; |
230 | goto err_out2; |
231 | } |
232 | |
233 | mem = ioremap(pci_resource_start(pdev, 0), size: 0x4000); |
234 | #else |
235 | if (!(pci_resource_flags(pdev, 1) & IO_RESOURCE_IO)) { |
236 | printk(KERN_ERR "skfp: region is not PIO resource\n" ); |
237 | err = -EIO; |
238 | goto err_out2; |
239 | } |
240 | |
241 | mem = ioport_map(pci_resource_start(pdev, 1), FP_IO_LEN); |
242 | #endif |
243 | if (!mem) { |
244 | printk(KERN_ERR "skfp: Unable to map register, " |
245 | "FDDI adapter will be disabled.\n" ); |
246 | err = -EIO; |
247 | goto err_out2; |
248 | } |
249 | |
250 | dev = alloc_fddidev(sizeof_priv: sizeof(struct s_smc)); |
251 | if (!dev) { |
252 | printk(KERN_ERR "skfp: Unable to allocate fddi device, " |
253 | "FDDI adapter will be disabled.\n" ); |
254 | err = -ENOMEM; |
255 | goto err_out3; |
256 | } |
257 | |
258 | dev->irq = pdev->irq; |
259 | dev->netdev_ops = &skfp_netdev_ops; |
260 | |
261 | SET_NETDEV_DEV(dev, &pdev->dev); |
262 | |
263 | /* Initialize board structure with bus-specific info */ |
264 | smc = netdev_priv(dev); |
265 | smc->os.dev = dev; |
266 | smc->os.bus_type = SK_BUS_TYPE_PCI; |
267 | smc->os.pdev = *pdev; |
268 | smc->os.QueueSkb = MAX_TX_QUEUE_LEN; |
269 | smc->os.MaxFrameSize = MAX_FRAME_SIZE; |
270 | smc->os.dev = dev; |
271 | smc->hw.slot = -1; |
272 | smc->hw.iop = mem; |
273 | smc->os.ResetRequested = FALSE; |
274 | skb_queue_head_init(list: &smc->os.SendSkbQueue); |
275 | |
276 | dev->base_addr = (unsigned long)mem; |
277 | |
278 | err = skfp_driver_init(dev); |
279 | if (err) |
280 | goto err_out4; |
281 | |
282 | err = register_netdev(dev); |
283 | if (err) |
284 | goto err_out5; |
285 | |
286 | ++num_boards; |
287 | pci_set_drvdata(pdev, data: dev); |
288 | |
289 | if ((pdev->subsystem_device & 0xff00) == 0x5500 || |
290 | (pdev->subsystem_device & 0xff00) == 0x5800) |
291 | printk("%s: SysKonnect FDDI PCI adapter" |
292 | " found (SK-%04X)\n" , dev->name, |
293 | pdev->subsystem_device); |
294 | else |
295 | printk("%s: FDDI PCI adapter found\n" , dev->name); |
296 | |
297 | return 0; |
298 | err_out5: |
299 | if (smc->os.SharedMemAddr) |
300 | dma_free_coherent(dev: &pdev->dev, size: smc->os.SharedMemSize, |
301 | cpu_addr: smc->os.SharedMemAddr, |
302 | dma_handle: smc->os.SharedMemDMA); |
303 | dma_free_coherent(dev: &pdev->dev, MAX_FRAME_SIZE, |
304 | cpu_addr: smc->os.LocalRxBuffer, dma_handle: smc->os.LocalRxBufferDMA); |
305 | err_out4: |
306 | free_netdev(dev); |
307 | err_out3: |
308 | #ifdef MEM_MAPPED_IO |
309 | iounmap(addr: mem); |
310 | #else |
311 | ioport_unmap(mem); |
312 | #endif |
313 | err_out2: |
314 | pci_release_regions(pdev); |
315 | err_out1: |
316 | pci_disable_device(dev: pdev); |
317 | return err; |
318 | } |
319 | |
320 | /* |
321 | * Called for each adapter board from pci_unregister_driver |
322 | */ |
323 | static void skfp_remove_one(struct pci_dev *pdev) |
324 | { |
325 | struct net_device *p = pci_get_drvdata(pdev); |
326 | struct s_smc *lp = netdev_priv(dev: p); |
327 | |
328 | unregister_netdev(dev: p); |
329 | |
330 | if (lp->os.SharedMemAddr) { |
331 | dma_free_coherent(dev: &pdev->dev, |
332 | size: lp->os.SharedMemSize, |
333 | cpu_addr: lp->os.SharedMemAddr, |
334 | dma_handle: lp->os.SharedMemDMA); |
335 | lp->os.SharedMemAddr = NULL; |
336 | } |
337 | if (lp->os.LocalRxBuffer) { |
338 | dma_free_coherent(dev: &pdev->dev, |
339 | MAX_FRAME_SIZE, |
340 | cpu_addr: lp->os.LocalRxBuffer, |
341 | dma_handle: lp->os.LocalRxBufferDMA); |
342 | lp->os.LocalRxBuffer = NULL; |
343 | } |
344 | #ifdef MEM_MAPPED_IO |
345 | iounmap(addr: lp->hw.iop); |
346 | #else |
347 | ioport_unmap(lp->hw.iop); |
348 | #endif |
349 | pci_release_regions(pdev); |
350 | free_netdev(dev: p); |
351 | |
352 | pci_disable_device(dev: pdev); |
353 | } |
354 | |
355 | /* |
356 | * ==================== |
357 | * = skfp_driver_init = |
358 | * ==================== |
359 | * |
360 | * Overview: |
361 | * Initializes remaining adapter board structure information |
362 | * and makes sure adapter is in a safe state prior to skfp_open(). |
363 | * |
364 | * Returns: |
365 | * Condition code |
366 | * |
367 | * Arguments: |
368 | * dev - pointer to device information |
369 | * |
370 | * Functional Description: |
371 | * This function allocates additional resources such as the host memory |
372 | * blocks needed by the adapter. |
373 | * The adapter is also reset. The OS must call skfp_open() to open |
374 | * the adapter and bring it on-line. |
375 | * |
376 | * Return Codes: |
377 | * 0 - initialization succeeded |
378 | * -1 - initialization failed |
379 | */ |
380 | static int skfp_driver_init(struct net_device *dev) |
381 | { |
382 | struct s_smc *smc = netdev_priv(dev); |
383 | skfddi_priv *bp = &smc->os; |
384 | int err = -EIO; |
385 | |
386 | pr_debug("entering skfp_driver_init\n" ); |
387 | |
388 | // set the io address in private structures |
389 | bp->base_addr = dev->base_addr; |
390 | |
391 | // Get the interrupt level from the PCI Configuration Table |
392 | smc->hw.irq = dev->irq; |
393 | |
394 | spin_lock_init(&bp->DriverLock); |
395 | |
396 | // Allocate invalid frame |
397 | bp->LocalRxBuffer = dma_alloc_coherent(dev: &bp->pdev.dev, MAX_FRAME_SIZE, |
398 | dma_handle: &bp->LocalRxBufferDMA, |
399 | GFP_ATOMIC); |
400 | if (!bp->LocalRxBuffer) { |
401 | printk("could not allocate mem for " ); |
402 | printk("LocalRxBuffer: %d byte\n" , MAX_FRAME_SIZE); |
403 | goto fail; |
404 | } |
405 | |
406 | // Determine the required size of the 'shared' memory area. |
407 | bp->SharedMemSize = mac_drv_check_space(); |
408 | pr_debug("Memory for HWM: %ld\n" , bp->SharedMemSize); |
409 | if (bp->SharedMemSize > 0) { |
410 | bp->SharedMemSize += 16; // for descriptor alignment |
411 | |
412 | bp->SharedMemAddr = dma_alloc_coherent(dev: &bp->pdev.dev, |
413 | size: bp->SharedMemSize, |
414 | dma_handle: &bp->SharedMemDMA, |
415 | GFP_ATOMIC); |
416 | if (!bp->SharedMemAddr) { |
417 | printk("could not allocate mem for " ); |
418 | printk("hardware module: %ld byte\n" , |
419 | bp->SharedMemSize); |
420 | goto fail; |
421 | } |
422 | |
423 | } else { |
424 | bp->SharedMemAddr = NULL; |
425 | } |
426 | |
427 | bp->SharedMemHeap = 0; |
428 | |
429 | card_stop(smc); // Reset adapter. |
430 | |
431 | pr_debug("mac_drv_init()..\n" ); |
432 | if (mac_drv_init(smc) != 0) { |
433 | pr_debug("mac_drv_init() failed\n" ); |
434 | goto fail; |
435 | } |
436 | read_address(smc, NULL); |
437 | pr_debug("HW-Addr: %pMF\n" , smc->hw.fddi_canon_addr.a); |
438 | eth_hw_addr_set(dev, addr: smc->hw.fddi_canon_addr.a); |
439 | |
440 | smt_reset_defaults(smc, level: 0); |
441 | |
442 | return 0; |
443 | |
444 | fail: |
445 | if (bp->SharedMemAddr) { |
446 | dma_free_coherent(dev: &bp->pdev.dev, |
447 | size: bp->SharedMemSize, |
448 | cpu_addr: bp->SharedMemAddr, |
449 | dma_handle: bp->SharedMemDMA); |
450 | bp->SharedMemAddr = NULL; |
451 | } |
452 | if (bp->LocalRxBuffer) { |
453 | dma_free_coherent(dev: &bp->pdev.dev, MAX_FRAME_SIZE, |
454 | cpu_addr: bp->LocalRxBuffer, dma_handle: bp->LocalRxBufferDMA); |
455 | bp->LocalRxBuffer = NULL; |
456 | } |
457 | return err; |
458 | } // skfp_driver_init |
459 | |
460 | |
461 | /* |
462 | * ============= |
463 | * = skfp_open = |
464 | * ============= |
465 | * |
466 | * Overview: |
467 | * Opens the adapter |
468 | * |
469 | * Returns: |
470 | * Condition code |
471 | * |
472 | * Arguments: |
473 | * dev - pointer to device information |
474 | * |
475 | * Functional Description: |
476 | * This function brings the adapter to an operational state. |
477 | * |
478 | * Return Codes: |
479 | * 0 - Adapter was successfully opened |
480 | * -EAGAIN - Could not register IRQ |
481 | */ |
482 | static int skfp_open(struct net_device *dev) |
483 | { |
484 | struct s_smc *smc = netdev_priv(dev); |
485 | int err; |
486 | |
487 | pr_debug("entering skfp_open\n" ); |
488 | /* Register IRQ - support shared interrupts by passing device ptr */ |
489 | err = request_irq(irq: dev->irq, handler: skfp_interrupt, IRQF_SHARED, |
490 | name: dev->name, dev); |
491 | if (err) |
492 | return err; |
493 | |
494 | /* |
495 | * Set current address to factory MAC address |
496 | * |
497 | * Note: We've already done this step in skfp_driver_init. |
498 | * However, it's possible that a user has set a node |
499 | * address override, then closed and reopened the |
500 | * adapter. Unless we reset the device address field |
501 | * now, we'll continue to use the existing modified |
502 | * address. |
503 | */ |
504 | read_address(smc, NULL); |
505 | eth_hw_addr_set(dev, addr: smc->hw.fddi_canon_addr.a); |
506 | |
507 | init_smt(smc, NULL); |
508 | smt_online(smc, on: 1); |
509 | STI_FBI(); |
510 | |
511 | /* Clear local multicast address tables */ |
512 | mac_clear_multicast(smc); |
513 | |
514 | /* Disable promiscuous filter settings */ |
515 | mac_drv_rx_mode(smc, RX_DISABLE_PROMISC); |
516 | |
517 | netif_start_queue(dev); |
518 | return 0; |
519 | } // skfp_open |
520 | |
521 | |
522 | /* |
523 | * ============== |
524 | * = skfp_close = |
525 | * ============== |
526 | * |
527 | * Overview: |
528 | * Closes the device/module. |
529 | * |
530 | * Returns: |
531 | * Condition code |
532 | * |
533 | * Arguments: |
534 | * dev - pointer to device information |
535 | * |
536 | * Functional Description: |
537 | * This routine closes the adapter and brings it to a safe state. |
538 | * The interrupt service routine is deregistered with the OS. |
539 | * The adapter can be opened again with another call to skfp_open(). |
540 | * |
541 | * Return Codes: |
542 | * Always return 0. |
543 | * |
544 | * Assumptions: |
545 | * No further requests for this adapter are made after this routine is |
546 | * called. skfp_open() can be called to reset and reinitialize the |
547 | * adapter. |
548 | */ |
549 | static int skfp_close(struct net_device *dev) |
550 | { |
551 | struct s_smc *smc = netdev_priv(dev); |
552 | skfddi_priv *bp = &smc->os; |
553 | |
554 | CLI_FBI(); |
555 | smt_reset_defaults(smc, level: 1); |
556 | card_stop(smc); |
557 | mac_drv_clear_tx_queue(smc); |
558 | mac_drv_clear_rx_queue(smc); |
559 | |
560 | netif_stop_queue(dev); |
561 | /* Deregister (free) IRQ */ |
562 | free_irq(dev->irq, dev); |
563 | |
564 | skb_queue_purge(list: &bp->SendSkbQueue); |
565 | bp->QueueSkb = MAX_TX_QUEUE_LEN; |
566 | |
567 | return 0; |
568 | } // skfp_close |
569 | |
570 | |
571 | /* |
572 | * ================== |
573 | * = skfp_interrupt = |
574 | * ================== |
575 | * |
576 | * Overview: |
577 | * Interrupt processing routine |
578 | * |
579 | * Returns: |
580 | * None |
581 | * |
582 | * Arguments: |
583 | * irq - interrupt vector |
584 | * dev_id - pointer to device information |
585 | * |
586 | * Functional Description: |
587 | * This routine calls the interrupt processing routine for this adapter. It |
588 | * disables and reenables adapter interrupts, as appropriate. We can support |
589 | * shared interrupts since the incoming dev_id pointer provides our device |
590 | * structure context. All the real work is done in the hardware module. |
591 | * |
592 | * Return Codes: |
593 | * None |
594 | * |
595 | * Assumptions: |
596 | * The interrupt acknowledgement at the hardware level (eg. ACKing the PIC |
597 | * on Intel-based systems) is done by the operating system outside this |
598 | * routine. |
599 | * |
600 | * System interrupts are enabled through this call. |
601 | * |
602 | * Side Effects: |
603 | * Interrupts are disabled, then reenabled at the adapter. |
604 | */ |
605 | |
606 | static irqreturn_t skfp_interrupt(int irq, void *dev_id) |
607 | { |
608 | struct net_device *dev = dev_id; |
609 | struct s_smc *smc; /* private board structure pointer */ |
610 | skfddi_priv *bp; |
611 | |
612 | smc = netdev_priv(dev); |
613 | bp = &smc->os; |
614 | |
615 | // IRQs enabled or disabled ? |
616 | if (inpd(ADDR(B0_IMSK)) == 0) { |
617 | // IRQs are disabled: must be shared interrupt |
618 | return IRQ_NONE; |
619 | } |
620 | // Note: At this point, IRQs are enabled. |
621 | if ((inpd(ISR_A) & smc->hw.is_imask) == 0) { // IRQ? |
622 | // Adapter did not issue an IRQ: must be shared interrupt |
623 | return IRQ_NONE; |
624 | } |
625 | CLI_FBI(); // Disable IRQs from our adapter. |
626 | spin_lock(lock: &bp->DriverLock); |
627 | |
628 | // Call interrupt handler in hardware module (HWM). |
629 | fddi_isr(smc); |
630 | |
631 | if (smc->os.ResetRequested) { |
632 | ResetAdapter(smc); |
633 | smc->os.ResetRequested = FALSE; |
634 | } |
635 | spin_unlock(lock: &bp->DriverLock); |
636 | STI_FBI(); // Enable IRQs from our adapter. |
637 | |
638 | return IRQ_HANDLED; |
639 | } // skfp_interrupt |
640 | |
641 | |
642 | /* |
643 | * ====================== |
644 | * = skfp_ctl_get_stats = |
645 | * ====================== |
646 | * |
647 | * Overview: |
648 | * Get statistics for FDDI adapter |
649 | * |
650 | * Returns: |
651 | * Pointer to FDDI statistics structure |
652 | * |
653 | * Arguments: |
654 | * dev - pointer to device information |
655 | * |
656 | * Functional Description: |
657 | * Gets current MIB objects from adapter, then |
658 | * returns FDDI statistics structure as defined |
659 | * in if_fddi.h. |
660 | * |
661 | * Note: Since the FDDI statistics structure is |
662 | * still new and the device structure doesn't |
663 | * have an FDDI-specific get statistics handler, |
664 | * we'll return the FDDI statistics structure as |
665 | * a pointer to an Ethernet statistics structure. |
666 | * That way, at least the first part of the statistics |
667 | * structure can be decoded properly. |
668 | * We'll have to pay attention to this routine as the |
669 | * device structure becomes more mature and LAN media |
670 | * independent. |
671 | * |
672 | */ |
673 | static struct net_device_stats *skfp_ctl_get_stats(struct net_device *dev) |
674 | { |
675 | struct s_smc *bp = netdev_priv(dev); |
676 | |
677 | /* Fill the bp->stats structure with driver-maintained counters */ |
678 | |
679 | bp->os.MacStat.port_bs_flag[0] = 0x1234; |
680 | bp->os.MacStat.port_bs_flag[1] = 0x5678; |
681 | // goos: need to fill out fddi statistic |
682 | #if 0 |
683 | /* Get FDDI SMT MIB objects */ |
684 | |
685 | /* Fill the bp->stats structure with the SMT MIB object values */ |
686 | |
687 | 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)); |
688 | bp->stats.smt_op_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_op_version_id; |
689 | bp->stats.smt_hi_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_hi_version_id; |
690 | bp->stats.smt_lo_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_lo_version_id; |
691 | 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)); |
692 | bp->stats.smt_mib_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_mib_version_id; |
693 | bp->stats.smt_mac_cts = bp->cmd_rsp_virt->smt_mib_get.smt_mac_ct; |
694 | bp->stats.smt_non_master_cts = bp->cmd_rsp_virt->smt_mib_get.smt_non_master_ct; |
695 | bp->stats.smt_master_cts = bp->cmd_rsp_virt->smt_mib_get.smt_master_ct; |
696 | bp->stats.smt_available_paths = bp->cmd_rsp_virt->smt_mib_get.smt_available_paths; |
697 | bp->stats.smt_config_capabilities = bp->cmd_rsp_virt->smt_mib_get.smt_config_capabilities; |
698 | bp->stats.smt_config_policy = bp->cmd_rsp_virt->smt_mib_get.smt_config_policy; |
699 | bp->stats.smt_connection_policy = bp->cmd_rsp_virt->smt_mib_get.smt_connection_policy; |
700 | bp->stats.smt_t_notify = bp->cmd_rsp_virt->smt_mib_get.smt_t_notify; |
701 | bp->stats.smt_stat_rpt_policy = bp->cmd_rsp_virt->smt_mib_get.smt_stat_rpt_policy; |
702 | bp->stats.smt_trace_max_expiration = bp->cmd_rsp_virt->smt_mib_get.smt_trace_max_expiration; |
703 | bp->stats.smt_bypass_present = bp->cmd_rsp_virt->smt_mib_get.smt_bypass_present; |
704 | bp->stats.smt_ecm_state = bp->cmd_rsp_virt->smt_mib_get.smt_ecm_state; |
705 | bp->stats.smt_cf_state = bp->cmd_rsp_virt->smt_mib_get.smt_cf_state; |
706 | bp->stats.smt_remote_disconnect_flag = bp->cmd_rsp_virt->smt_mib_get.smt_remote_disconnect_flag; |
707 | bp->stats.smt_station_status = bp->cmd_rsp_virt->smt_mib_get.smt_station_status; |
708 | bp->stats.smt_peer_wrap_flag = bp->cmd_rsp_virt->smt_mib_get.smt_peer_wrap_flag; |
709 | bp->stats.smt_time_stamp = bp->cmd_rsp_virt->smt_mib_get.smt_msg_time_stamp.ls; |
710 | bp->stats.smt_transition_time_stamp = bp->cmd_rsp_virt->smt_mib_get.smt_transition_time_stamp.ls; |
711 | bp->stats.mac_frame_status_functions = bp->cmd_rsp_virt->smt_mib_get.mac_frame_status_functions; |
712 | bp->stats.mac_t_max_capability = bp->cmd_rsp_virt->smt_mib_get.mac_t_max_capability; |
713 | bp->stats.mac_tvx_capability = bp->cmd_rsp_virt->smt_mib_get.mac_tvx_capability; |
714 | bp->stats.mac_available_paths = bp->cmd_rsp_virt->smt_mib_get.mac_available_paths; |
715 | bp->stats.mac_current_path = bp->cmd_rsp_virt->smt_mib_get.mac_current_path; |
716 | memcpy(bp->stats.mac_upstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_upstream_nbr, FDDI_K_ALEN); |
717 | memcpy(bp->stats.mac_downstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_downstream_nbr, FDDI_K_ALEN); |
718 | memcpy(bp->stats.mac_old_upstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_old_upstream_nbr, FDDI_K_ALEN); |
719 | memcpy(bp->stats.mac_old_downstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_old_downstream_nbr, FDDI_K_ALEN); |
720 | bp->stats.mac_dup_address_test = bp->cmd_rsp_virt->smt_mib_get.mac_dup_address_test; |
721 | bp->stats.mac_requested_paths = bp->cmd_rsp_virt->smt_mib_get.mac_requested_paths; |
722 | bp->stats.mac_downstream_port_type = bp->cmd_rsp_virt->smt_mib_get.mac_downstream_port_type; |
723 | memcpy(bp->stats.mac_smt_address, &bp->cmd_rsp_virt->smt_mib_get.mac_smt_address, FDDI_K_ALEN); |
724 | bp->stats.mac_t_req = bp->cmd_rsp_virt->smt_mib_get.mac_t_req; |
725 | bp->stats.mac_t_neg = bp->cmd_rsp_virt->smt_mib_get.mac_t_neg; |
726 | bp->stats.mac_t_max = bp->cmd_rsp_virt->smt_mib_get.mac_t_max; |
727 | bp->stats.mac_tvx_value = bp->cmd_rsp_virt->smt_mib_get.mac_tvx_value; |
728 | bp->stats.mac_frame_error_threshold = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_threshold; |
729 | bp->stats.mac_frame_error_ratio = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_ratio; |
730 | bp->stats.mac_rmt_state = bp->cmd_rsp_virt->smt_mib_get.mac_rmt_state; |
731 | bp->stats.mac_da_flag = bp->cmd_rsp_virt->smt_mib_get.mac_da_flag; |
732 | bp->stats.mac_una_da_flag = bp->cmd_rsp_virt->smt_mib_get.mac_unda_flag; |
733 | bp->stats.mac_frame_error_flag = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_flag; |
734 | bp->stats.mac_ma_unitdata_available = bp->cmd_rsp_virt->smt_mib_get.mac_ma_unitdata_available; |
735 | bp->stats.mac_hardware_present = bp->cmd_rsp_virt->smt_mib_get.mac_hardware_present; |
736 | bp->stats.mac_ma_unitdata_enable = bp->cmd_rsp_virt->smt_mib_get.mac_ma_unitdata_enable; |
737 | bp->stats.path_tvx_lower_bound = bp->cmd_rsp_virt->smt_mib_get.path_tvx_lower_bound; |
738 | bp->stats.path_t_max_lower_bound = bp->cmd_rsp_virt->smt_mib_get.path_t_max_lower_bound; |
739 | bp->stats.path_max_t_req = bp->cmd_rsp_virt->smt_mib_get.path_max_t_req; |
740 | memcpy(bp->stats.path_configuration, &bp->cmd_rsp_virt->smt_mib_get.path_configuration, sizeof(bp->cmd_rsp_virt->smt_mib_get.path_configuration)); |
741 | bp->stats.port_my_type[0] = bp->cmd_rsp_virt->smt_mib_get.port_my_type[0]; |
742 | bp->stats.port_my_type[1] = bp->cmd_rsp_virt->smt_mib_get.port_my_type[1]; |
743 | bp->stats.port_neighbor_type[0] = bp->cmd_rsp_virt->smt_mib_get.port_neighbor_type[0]; |
744 | bp->stats.port_neighbor_type[1] = bp->cmd_rsp_virt->smt_mib_get.port_neighbor_type[1]; |
745 | bp->stats.port_connection_policies[0] = bp->cmd_rsp_virt->smt_mib_get.port_connection_policies[0]; |
746 | bp->stats.port_connection_policies[1] = bp->cmd_rsp_virt->smt_mib_get.port_connection_policies[1]; |
747 | bp->stats.port_mac_indicated[0] = bp->cmd_rsp_virt->smt_mib_get.port_mac_indicated[0]; |
748 | bp->stats.port_mac_indicated[1] = bp->cmd_rsp_virt->smt_mib_get.port_mac_indicated[1]; |
749 | bp->stats.port_current_path[0] = bp->cmd_rsp_virt->smt_mib_get.port_current_path[0]; |
750 | bp->stats.port_current_path[1] = bp->cmd_rsp_virt->smt_mib_get.port_current_path[1]; |
751 | memcpy(&bp->stats.port_requested_paths[0 * 3], &bp->cmd_rsp_virt->smt_mib_get.port_requested_paths[0], 3); |
752 | memcpy(&bp->stats.port_requested_paths[1 * 3], &bp->cmd_rsp_virt->smt_mib_get.port_requested_paths[1], 3); |
753 | bp->stats.port_mac_placement[0] = bp->cmd_rsp_virt->smt_mib_get.port_mac_placement[0]; |
754 | bp->stats.port_mac_placement[1] = bp->cmd_rsp_virt->smt_mib_get.port_mac_placement[1]; |
755 | bp->stats.port_available_paths[0] = bp->cmd_rsp_virt->smt_mib_get.port_available_paths[0]; |
756 | bp->stats.port_available_paths[1] = bp->cmd_rsp_virt->smt_mib_get.port_available_paths[1]; |
757 | bp->stats.port_pmd_class[0] = bp->cmd_rsp_virt->smt_mib_get.port_pmd_class[0]; |
758 | bp->stats.port_pmd_class[1] = bp->cmd_rsp_virt->smt_mib_get.port_pmd_class[1]; |
759 | bp->stats.port_connection_capabilities[0] = bp->cmd_rsp_virt->smt_mib_get.port_connection_capabilities[0]; |
760 | bp->stats.port_connection_capabilities[1] = bp->cmd_rsp_virt->smt_mib_get.port_connection_capabilities[1]; |
761 | bp->stats.port_bs_flag[0] = bp->cmd_rsp_virt->smt_mib_get.port_bs_flag[0]; |
762 | bp->stats.port_bs_flag[1] = bp->cmd_rsp_virt->smt_mib_get.port_bs_flag[1]; |
763 | bp->stats.port_ler_estimate[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_estimate[0]; |
764 | bp->stats.port_ler_estimate[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_estimate[1]; |
765 | bp->stats.port_ler_cutoff[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_cutoff[0]; |
766 | bp->stats.port_ler_cutoff[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_cutoff[1]; |
767 | bp->stats.port_ler_alarm[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_alarm[0]; |
768 | bp->stats.port_ler_alarm[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_alarm[1]; |
769 | bp->stats.port_connect_state[0] = bp->cmd_rsp_virt->smt_mib_get.port_connect_state[0]; |
770 | bp->stats.port_connect_state[1] = bp->cmd_rsp_virt->smt_mib_get.port_connect_state[1]; |
771 | bp->stats.port_pcm_state[0] = bp->cmd_rsp_virt->smt_mib_get.port_pcm_state[0]; |
772 | bp->stats.port_pcm_state[1] = bp->cmd_rsp_virt->smt_mib_get.port_pcm_state[1]; |
773 | bp->stats.port_pc_withhold[0] = bp->cmd_rsp_virt->smt_mib_get.port_pc_withhold[0]; |
774 | bp->stats.port_pc_withhold[1] = bp->cmd_rsp_virt->smt_mib_get.port_pc_withhold[1]; |
775 | bp->stats.port_ler_flag[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_flag[0]; |
776 | bp->stats.port_ler_flag[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_flag[1]; |
777 | bp->stats.port_hardware_present[0] = bp->cmd_rsp_virt->smt_mib_get.port_hardware_present[0]; |
778 | bp->stats.port_hardware_present[1] = bp->cmd_rsp_virt->smt_mib_get.port_hardware_present[1]; |
779 | |
780 | |
781 | /* Fill the bp->stats structure with the FDDI counter values */ |
782 | |
783 | bp->stats.mac_frame_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.frame_cnt.ls; |
784 | bp->stats.mac_copied_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.copied_cnt.ls; |
785 | bp->stats.mac_transmit_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.transmit_cnt.ls; |
786 | bp->stats.mac_error_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.error_cnt.ls; |
787 | bp->stats.mac_lost_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.lost_cnt.ls; |
788 | bp->stats.port_lct_fail_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.lct_rejects[0].ls; |
789 | bp->stats.port_lct_fail_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.lct_rejects[1].ls; |
790 | bp->stats.port_lem_reject_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.lem_rejects[0].ls; |
791 | bp->stats.port_lem_reject_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.lem_rejects[1].ls; |
792 | bp->stats.port_lem_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.link_errors[0].ls; |
793 | bp->stats.port_lem_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.link_errors[1].ls; |
794 | |
795 | #endif |
796 | return (struct net_device_stats *)&bp->os.MacStat; |
797 | } // ctl_get_stat |
798 | |
799 | |
800 | /* |
801 | * ============================== |
802 | * = skfp_ctl_set_multicast_list = |
803 | * ============================== |
804 | * |
805 | * Overview: |
806 | * Enable/Disable LLC frame promiscuous mode reception |
807 | * on the adapter and/or update multicast address table. |
808 | * |
809 | * Returns: |
810 | * None |
811 | * |
812 | * Arguments: |
813 | * dev - pointer to device information |
814 | * |
815 | * Functional Description: |
816 | * This function acquires the driver lock and only calls |
817 | * skfp_ctl_set_multicast_list_wo_lock then. |
818 | * This routine follows a fairly simple algorithm for setting the |
819 | * adapter filters and CAM: |
820 | * |
821 | * if IFF_PROMISC flag is set |
822 | * enable promiscuous mode |
823 | * else |
824 | * disable promiscuous mode |
825 | * if number of multicast addresses <= max. multicast number |
826 | * add mc addresses to adapter table |
827 | * else |
828 | * enable promiscuous mode |
829 | * update adapter filters |
830 | * |
831 | * Assumptions: |
832 | * Multicast addresses are presented in canonical (LSB) format. |
833 | * |
834 | * Side Effects: |
835 | * On-board adapter filters are updated. |
836 | */ |
837 | static void skfp_ctl_set_multicast_list(struct net_device *dev) |
838 | { |
839 | struct s_smc *smc = netdev_priv(dev); |
840 | skfddi_priv *bp = &smc->os; |
841 | unsigned long Flags; |
842 | |
843 | spin_lock_irqsave(&bp->DriverLock, Flags); |
844 | skfp_ctl_set_multicast_list_wo_lock(dev); |
845 | spin_unlock_irqrestore(lock: &bp->DriverLock, flags: Flags); |
846 | } // skfp_ctl_set_multicast_list |
847 | |
848 | |
849 | |
850 | static void skfp_ctl_set_multicast_list_wo_lock(struct net_device *dev) |
851 | { |
852 | struct s_smc *smc = netdev_priv(dev); |
853 | struct netdev_hw_addr *ha; |
854 | |
855 | /* Enable promiscuous mode, if necessary */ |
856 | if (dev->flags & IFF_PROMISC) { |
857 | mac_drv_rx_mode(smc, RX_ENABLE_PROMISC); |
858 | pr_debug("PROMISCUOUS MODE ENABLED\n" ); |
859 | } |
860 | /* Else, update multicast address table */ |
861 | else { |
862 | mac_drv_rx_mode(smc, RX_DISABLE_PROMISC); |
863 | pr_debug("PROMISCUOUS MODE DISABLED\n" ); |
864 | |
865 | // Reset all MC addresses |
866 | mac_clear_multicast(smc); |
867 | mac_drv_rx_mode(smc, RX_DISABLE_ALLMULTI); |
868 | |
869 | if (dev->flags & IFF_ALLMULTI) { |
870 | mac_drv_rx_mode(smc, RX_ENABLE_ALLMULTI); |
871 | pr_debug("ENABLE ALL MC ADDRESSES\n" ); |
872 | } else if (!netdev_mc_empty(dev)) { |
873 | if (netdev_mc_count(dev) <= FPMAX_MULTICAST) { |
874 | /* use exact filtering */ |
875 | |
876 | // point to first multicast addr |
877 | netdev_for_each_mc_addr(ha, dev) { |
878 | mac_add_multicast(smc, |
879 | addr: (struct fddi_addr *)ha->addr, |
880 | can: 1); |
881 | |
882 | pr_debug("ENABLE MC ADDRESS: %pMF\n" , |
883 | ha->addr); |
884 | } |
885 | |
886 | } else { // more MC addresses than HW supports |
887 | |
888 | mac_drv_rx_mode(smc, RX_ENABLE_ALLMULTI); |
889 | pr_debug("ENABLE ALL MC ADDRESSES\n" ); |
890 | } |
891 | } else { // no MC addresses |
892 | |
893 | pr_debug("DISABLE ALL MC ADDRESSES\n" ); |
894 | } |
895 | |
896 | /* Update adapter filters */ |
897 | mac_update_multicast(smc); |
898 | } |
899 | } // skfp_ctl_set_multicast_list_wo_lock |
900 | |
901 | |
902 | /* |
903 | * =========================== |
904 | * = skfp_ctl_set_mac_address = |
905 | * =========================== |
906 | * |
907 | * Overview: |
908 | * set new mac address on adapter and update dev_addr field in device table. |
909 | * |
910 | * Returns: |
911 | * None |
912 | * |
913 | * Arguments: |
914 | * dev - pointer to device information |
915 | * addr - pointer to sockaddr structure containing unicast address to set |
916 | * |
917 | * Assumptions: |
918 | * The address pointed to by addr->sa_data is a valid unicast |
919 | * address and is presented in canonical (LSB) format. |
920 | */ |
921 | static int skfp_ctl_set_mac_address(struct net_device *dev, void *addr) |
922 | { |
923 | struct s_smc *smc = netdev_priv(dev); |
924 | struct sockaddr *p_sockaddr = (struct sockaddr *) addr; |
925 | skfddi_priv *bp = &smc->os; |
926 | unsigned long Flags; |
927 | |
928 | |
929 | dev_addr_set(dev, addr: p_sockaddr->sa_data); |
930 | spin_lock_irqsave(&bp->DriverLock, Flags); |
931 | ResetAdapter(smc); |
932 | spin_unlock_irqrestore(lock: &bp->DriverLock, flags: Flags); |
933 | |
934 | return 0; /* always return zero */ |
935 | } // skfp_ctl_set_mac_address |
936 | |
937 | |
938 | /* |
939 | * ======================= |
940 | * = skfp_siocdevprivate = |
941 | * ======================= |
942 | * |
943 | * Overview: |
944 | * |
945 | * Perform IOCTL call functions here. Some are privileged operations and the |
946 | * effective uid is checked in those cases. |
947 | * |
948 | * Returns: |
949 | * status value |
950 | * 0 - success |
951 | * other - failure |
952 | * |
953 | * Arguments: |
954 | * dev - pointer to device information |
955 | * rq - pointer to ioctl request structure |
956 | * cmd - ? |
957 | * |
958 | */ |
959 | |
960 | |
961 | static int skfp_siocdevprivate(struct net_device *dev, struct ifreq *rq, void __user *data, int cmd) |
962 | { |
963 | struct s_smc *smc = netdev_priv(dev); |
964 | skfddi_priv *lp = &smc->os; |
965 | struct s_skfp_ioctl ioc; |
966 | int status = 0; |
967 | |
968 | if (copy_from_user(to: &ioc, from: data, n: sizeof(struct s_skfp_ioctl))) |
969 | return -EFAULT; |
970 | |
971 | if (in_compat_syscall()) |
972 | return -EOPNOTSUPP; |
973 | |
974 | switch (ioc.cmd) { |
975 | case SKFP_GET_STATS: /* Get the driver statistics */ |
976 | ioc.len = sizeof(lp->MacStat); |
977 | status = copy_to_user(to: ioc.data, from: skfp_ctl_get_stats(dev), n: ioc.len) |
978 | ? -EFAULT : 0; |
979 | break; |
980 | case SKFP_CLR_STATS: /* Zero out the driver statistics */ |
981 | if (!capable(CAP_NET_ADMIN)) { |
982 | status = -EPERM; |
983 | } else { |
984 | memset(&lp->MacStat, 0, sizeof(lp->MacStat)); |
985 | } |
986 | break; |
987 | default: |
988 | printk("ioctl for %s: unknown cmd: %04x\n" , dev->name, ioc.cmd); |
989 | status = -EOPNOTSUPP; |
990 | |
991 | } // switch |
992 | |
993 | return status; |
994 | } // skfp_ioctl |
995 | |
996 | |
997 | /* |
998 | * ===================== |
999 | * = skfp_send_pkt = |
1000 | * ===================== |
1001 | * |
1002 | * Overview: |
1003 | * Queues a packet for transmission and try to transmit it. |
1004 | * |
1005 | * Returns: |
1006 | * Condition code |
1007 | * |
1008 | * Arguments: |
1009 | * skb - pointer to sk_buff to queue for transmission |
1010 | * dev - pointer to device information |
1011 | * |
1012 | * Functional Description: |
1013 | * Here we assume that an incoming skb transmit request |
1014 | * is contained in a single physically contiguous buffer |
1015 | * in which the virtual address of the start of packet |
1016 | * (skb->data) can be converted to a physical address |
1017 | * by using dma_map_single(). |
1018 | * |
1019 | * We have an internal queue for packets we can not send |
1020 | * immediately. Packets in this queue can be given to the |
1021 | * adapter if transmit buffers are freed. |
1022 | * |
1023 | * We can't free the skb until after it's been DMA'd |
1024 | * out by the adapter, so we'll keep it in the driver and |
1025 | * return it in mac_drv_tx_complete. |
1026 | * |
1027 | * Return Codes: |
1028 | * 0 - driver has queued and/or sent packet |
1029 | * 1 - caller should requeue the sk_buff for later transmission |
1030 | * |
1031 | * Assumptions: |
1032 | * The entire packet is stored in one physically |
1033 | * contiguous buffer which is not cached and whose |
1034 | * 32-bit physical address can be determined. |
1035 | * |
1036 | * It's vital that this routine is NOT reentered for the |
1037 | * same board and that the OS is not in another section of |
1038 | * code (eg. skfp_interrupt) for the same board on a |
1039 | * different thread. |
1040 | * |
1041 | * Side Effects: |
1042 | * None |
1043 | */ |
1044 | static netdev_tx_t skfp_send_pkt(struct sk_buff *skb, |
1045 | struct net_device *dev) |
1046 | { |
1047 | struct s_smc *smc = netdev_priv(dev); |
1048 | skfddi_priv *bp = &smc->os; |
1049 | |
1050 | pr_debug("skfp_send_pkt\n" ); |
1051 | |
1052 | /* |
1053 | * Verify that incoming transmit request is OK |
1054 | * |
1055 | * Note: The packet size check is consistent with other |
1056 | * Linux device drivers, although the correct packet |
1057 | * size should be verified before calling the |
1058 | * transmit routine. |
1059 | */ |
1060 | |
1061 | if (!(skb->len >= FDDI_K_LLC_ZLEN && skb->len <= FDDI_K_LLC_LEN)) { |
1062 | bp->MacStat.gen.tx_errors++; /* bump error counter */ |
1063 | // dequeue packets from xmt queue and send them |
1064 | netif_start_queue(dev); |
1065 | dev_kfree_skb(skb); |
1066 | return NETDEV_TX_OK; /* return "success" */ |
1067 | } |
1068 | if (bp->QueueSkb == 0) { // return with tbusy set: queue full |
1069 | |
1070 | netif_stop_queue(dev); |
1071 | return NETDEV_TX_BUSY; |
1072 | } |
1073 | bp->QueueSkb--; |
1074 | skb_queue_tail(list: &bp->SendSkbQueue, newsk: skb); |
1075 | send_queued_packets(smc: netdev_priv(dev)); |
1076 | if (bp->QueueSkb == 0) { |
1077 | netif_stop_queue(dev); |
1078 | } |
1079 | return NETDEV_TX_OK; |
1080 | |
1081 | } // skfp_send_pkt |
1082 | |
1083 | |
1084 | /* |
1085 | * ======================= |
1086 | * = send_queued_packets = |
1087 | * ======================= |
1088 | * |
1089 | * Overview: |
1090 | * Send packets from the driver queue as long as there are some and |
1091 | * transmit resources are available. |
1092 | * |
1093 | * Returns: |
1094 | * None |
1095 | * |
1096 | * Arguments: |
1097 | * smc - pointer to smc (adapter) structure |
1098 | * |
1099 | * Functional Description: |
1100 | * Take a packet from queue if there is any. If not, then we are done. |
1101 | * Check if there are resources to send the packet. If not, requeue it |
1102 | * and exit. |
1103 | * Set packet descriptor flags and give packet to adapter. |
1104 | * Check if any send resources can be freed (we do not use the |
1105 | * transmit complete interrupt). |
1106 | */ |
1107 | static void send_queued_packets(struct s_smc *smc) |
1108 | { |
1109 | skfddi_priv *bp = &smc->os; |
1110 | struct sk_buff *skb; |
1111 | unsigned char fc; |
1112 | int queue; |
1113 | struct s_smt_fp_txd *txd; // Current TxD. |
1114 | dma_addr_t dma_address; |
1115 | unsigned long Flags; |
1116 | |
1117 | int frame_status; // HWM tx frame status. |
1118 | |
1119 | pr_debug("send queued packets\n" ); |
1120 | for (;;) { |
1121 | // send first buffer from queue |
1122 | skb = skb_dequeue(list: &bp->SendSkbQueue); |
1123 | |
1124 | if (!skb) { |
1125 | pr_debug("queue empty\n" ); |
1126 | return; |
1127 | } // queue empty ! |
1128 | |
1129 | spin_lock_irqsave(&bp->DriverLock, Flags); |
1130 | fc = skb->data[0]; |
1131 | queue = (fc & FC_SYNC_BIT) ? QUEUE_S : QUEUE_A0; |
1132 | #ifdef ESS |
1133 | // Check if the frame may/must be sent as a synchronous frame. |
1134 | |
1135 | if ((fc & ~(FC_SYNC_BIT | FC_LLC_PRIOR)) == FC_ASYNC_LLC) { |
1136 | // It's an LLC frame. |
1137 | if (!smc->ess.sync_bw_available) |
1138 | fc &= ~FC_SYNC_BIT; // No bandwidth available. |
1139 | |
1140 | else { // Bandwidth is available. |
1141 | |
1142 | if (smc->mib.fddiESSSynchTxMode) { |
1143 | // Send as sync. frame. |
1144 | fc |= FC_SYNC_BIT; |
1145 | } |
1146 | } |
1147 | } |
1148 | #endif // ESS |
1149 | frame_status = hwm_tx_init(smc, fc, frag_count: 1, frame_len: skb->len, frame_status: queue); |
1150 | |
1151 | if ((frame_status & (LOC_TX | LAN_TX)) == 0) { |
1152 | // Unable to send the frame. |
1153 | |
1154 | if ((frame_status & RING_DOWN) != 0) { |
1155 | // Ring is down. |
1156 | pr_debug("Tx attempt while ring down.\n" ); |
1157 | } else if ((frame_status & OUT_OF_TXD) != 0) { |
1158 | pr_debug("%s: out of TXDs.\n" , bp->dev->name); |
1159 | } else { |
1160 | pr_debug("%s: out of transmit resources" , |
1161 | bp->dev->name); |
1162 | } |
1163 | |
1164 | // Note: We will retry the operation as soon as |
1165 | // transmit resources become available. |
1166 | skb_queue_head(list: &bp->SendSkbQueue, newsk: skb); |
1167 | spin_unlock_irqrestore(lock: &bp->DriverLock, flags: Flags); |
1168 | return; // Packet has been queued. |
1169 | |
1170 | } // if (unable to send frame) |
1171 | |
1172 | bp->QueueSkb++; // one packet less in local queue |
1173 | |
1174 | // source address in packet ? |
1175 | CheckSourceAddress(frame: skb->data, hw_addr: smc->hw.fddi_canon_addr.a); |
1176 | |
1177 | txd = (struct s_smt_fp_txd *) HWM_GET_CURR_TXD(smc, queue); |
1178 | |
1179 | dma_address = dma_map_single(&(&bp->pdev)->dev, skb->data, |
1180 | skb->len, DMA_TO_DEVICE); |
1181 | if (frame_status & LAN_TX) { |
1182 | txd->txd_os.skb = skb; // save skb |
1183 | txd->txd_os.dma_addr = dma_address; // save dma mapping |
1184 | } |
1185 | hwm_tx_frag(smc, virt: skb->data, phys: dma_address, len: skb->len, |
1186 | frame_status: frame_status | FIRST_FRAG | LAST_FRAG | EN_IRQ_EOF); |
1187 | |
1188 | if (!(frame_status & LAN_TX)) { // local only frame |
1189 | dma_unmap_single(&(&bp->pdev)->dev, dma_address, |
1190 | skb->len, DMA_TO_DEVICE); |
1191 | dev_kfree_skb_irq(skb); |
1192 | } |
1193 | spin_unlock_irqrestore(lock: &bp->DriverLock, flags: Flags); |
1194 | } // for |
1195 | |
1196 | return; // never reached |
1197 | |
1198 | } // send_queued_packets |
1199 | |
1200 | |
1201 | /************************ |
1202 | * |
1203 | * CheckSourceAddress |
1204 | * |
1205 | * Verify if the source address is set. Insert it if necessary. |
1206 | * |
1207 | ************************/ |
1208 | static void CheckSourceAddress(unsigned char *frame, unsigned char *hw_addr) |
1209 | { |
1210 | unsigned char SRBit; |
1211 | |
1212 | if ((((unsigned long) frame[1 + 6]) & ~0x01) != 0) // source routing bit |
1213 | |
1214 | return; |
1215 | if ((unsigned short) frame[1 + 10] != 0) |
1216 | return; |
1217 | SRBit = frame[1 + 6] & 0x01; |
1218 | memcpy(&frame[1 + 6], hw_addr, ETH_ALEN); |
1219 | frame[8] |= SRBit; |
1220 | } // CheckSourceAddress |
1221 | |
1222 | |
1223 | /************************ |
1224 | * |
1225 | * ResetAdapter |
1226 | * |
1227 | * Reset the adapter and bring it back to operational mode. |
1228 | * Args |
1229 | * smc - A pointer to the SMT context struct. |
1230 | * Out |
1231 | * Nothing. |
1232 | * |
1233 | ************************/ |
1234 | static void ResetAdapter(struct s_smc *smc) |
1235 | { |
1236 | |
1237 | pr_debug("[fddi: ResetAdapter]\n" ); |
1238 | |
1239 | // Stop the adapter. |
1240 | |
1241 | card_stop(smc); // Stop all activity. |
1242 | |
1243 | // Clear the transmit and receive descriptor queues. |
1244 | mac_drv_clear_tx_queue(smc); |
1245 | mac_drv_clear_rx_queue(smc); |
1246 | |
1247 | // Restart the adapter. |
1248 | |
1249 | smt_reset_defaults(smc, level: 1); // Initialize the SMT module. |
1250 | |
1251 | init_smt(smc, mac_addr: (smc->os.dev)->dev_addr); // Initialize the hardware. |
1252 | |
1253 | smt_online(smc, on: 1); // Insert into the ring again. |
1254 | STI_FBI(); |
1255 | |
1256 | // Restore original receive mode (multicasts, promiscuous, etc.). |
1257 | skfp_ctl_set_multicast_list_wo_lock(dev: smc->os.dev); |
1258 | } // ResetAdapter |
1259 | |
1260 | |
1261 | //--------------- functions called by hardware module ---------------- |
1262 | |
1263 | /************************ |
1264 | * |
1265 | * llc_restart_tx |
1266 | * |
1267 | * The hardware driver calls this routine when the transmit complete |
1268 | * interrupt bits (end of frame) for the synchronous or asynchronous |
1269 | * queue is set. |
1270 | * |
1271 | * NOTE The hardware driver calls this function also if no packets are queued. |
1272 | * The routine must be able to handle this case. |
1273 | * Args |
1274 | * smc - A pointer to the SMT context struct. |
1275 | * Out |
1276 | * Nothing. |
1277 | * |
1278 | ************************/ |
1279 | void llc_restart_tx(struct s_smc *smc) |
1280 | { |
1281 | skfddi_priv *bp = &smc->os; |
1282 | |
1283 | pr_debug("[llc_restart_tx]\n" ); |
1284 | |
1285 | // Try to send queued packets |
1286 | spin_unlock(lock: &bp->DriverLock); |
1287 | send_queued_packets(smc); |
1288 | spin_lock(lock: &bp->DriverLock); |
1289 | netif_start_queue(dev: bp->dev);// system may send again if it was blocked |
1290 | |
1291 | } // llc_restart_tx |
1292 | |
1293 | |
1294 | /************************ |
1295 | * |
1296 | * mac_drv_get_space |
1297 | * |
1298 | * The hardware module calls this function to allocate the memory |
1299 | * for the SMT MBufs if the define MB_OUTSIDE_SMC is specified. |
1300 | * Args |
1301 | * smc - A pointer to the SMT context struct. |
1302 | * |
1303 | * size - Size of memory in bytes to allocate. |
1304 | * Out |
1305 | * != 0 A pointer to the virtual address of the allocated memory. |
1306 | * == 0 Allocation error. |
1307 | * |
1308 | ************************/ |
1309 | void *mac_drv_get_space(struct s_smc *smc, unsigned int size) |
1310 | { |
1311 | void *virt; |
1312 | |
1313 | pr_debug("mac_drv_get_space (%d bytes), " , size); |
1314 | virt = (void *) (smc->os.SharedMemAddr + smc->os.SharedMemHeap); |
1315 | |
1316 | if ((smc->os.SharedMemHeap + size) > smc->os.SharedMemSize) { |
1317 | printk("Unexpected SMT memory size requested: %d\n" , size); |
1318 | return NULL; |
1319 | } |
1320 | smc->os.SharedMemHeap += size; // Move heap pointer. |
1321 | |
1322 | pr_debug("mac_drv_get_space end\n" ); |
1323 | pr_debug("virt addr: %lx\n" , (ulong) virt); |
1324 | pr_debug("bus addr: %lx\n" , (ulong) |
1325 | (smc->os.SharedMemDMA + |
1326 | ((char *) virt - (char *)smc->os.SharedMemAddr))); |
1327 | return virt; |
1328 | } // mac_drv_get_space |
1329 | |
1330 | |
1331 | /************************ |
1332 | * |
1333 | * mac_drv_get_desc_mem |
1334 | * |
1335 | * This function is called by the hardware dependent module. |
1336 | * It allocates the memory for the RxD and TxD descriptors. |
1337 | * |
1338 | * This memory must be non-cached, non-movable and non-swappable. |
1339 | * This memory should start at a physical page boundary. |
1340 | * Args |
1341 | * smc - A pointer to the SMT context struct. |
1342 | * |
1343 | * size - Size of memory in bytes to allocate. |
1344 | * Out |
1345 | * != 0 A pointer to the virtual address of the allocated memory. |
1346 | * == 0 Allocation error. |
1347 | * |
1348 | ************************/ |
1349 | void *mac_drv_get_desc_mem(struct s_smc *smc, unsigned int size) |
1350 | { |
1351 | |
1352 | char *virt; |
1353 | |
1354 | pr_debug("mac_drv_get_desc_mem\n" ); |
1355 | |
1356 | // Descriptor memory must be aligned on 16-byte boundary. |
1357 | |
1358 | virt = mac_drv_get_space(smc, size); |
1359 | |
1360 | size = (u_int) (16 - (((unsigned long) virt) & 15UL)); |
1361 | size = size % 16; |
1362 | |
1363 | pr_debug("Allocate %u bytes alignment gap " , size); |
1364 | pr_debug("for descriptor memory.\n" ); |
1365 | |
1366 | if (!mac_drv_get_space(smc, size)) { |
1367 | printk("fddi: Unable to align descriptor memory.\n" ); |
1368 | return NULL; |
1369 | } |
1370 | return virt + size; |
1371 | } // mac_drv_get_desc_mem |
1372 | |
1373 | |
1374 | /************************ |
1375 | * |
1376 | * mac_drv_virt2phys |
1377 | * |
1378 | * Get the physical address of a given virtual address. |
1379 | * Args |
1380 | * smc - A pointer to the SMT context struct. |
1381 | * |
1382 | * virt - A (virtual) pointer into our 'shared' memory area. |
1383 | * Out |
1384 | * Physical address of the given virtual address. |
1385 | * |
1386 | ************************/ |
1387 | unsigned long mac_drv_virt2phys(struct s_smc *smc, void *virt) |
1388 | { |
1389 | return smc->os.SharedMemDMA + |
1390 | ((char *) virt - (char *)smc->os.SharedMemAddr); |
1391 | } // mac_drv_virt2phys |
1392 | |
1393 | |
1394 | /************************ |
1395 | * |
1396 | * dma_master |
1397 | * |
1398 | * The HWM calls this function, when the driver leads through a DMA |
1399 | * transfer. If the OS-specific module must prepare the system hardware |
1400 | * for the DMA transfer, it should do it in this function. |
1401 | * |
1402 | * The hardware module calls this dma_master if it wants to send an SMT |
1403 | * frame. This means that the virt address passed in here is part of |
1404 | * the 'shared' memory area. |
1405 | * Args |
1406 | * smc - A pointer to the SMT context struct. |
1407 | * |
1408 | * virt - The virtual address of the data. |
1409 | * |
1410 | * len - The length in bytes of the data. |
1411 | * |
1412 | * flag - Indicates the transmit direction and the buffer type: |
1413 | * DMA_RD (0x01) system RAM ==> adapter buffer memory |
1414 | * DMA_WR (0x02) adapter buffer memory ==> system RAM |
1415 | * SMT_BUF (0x80) SMT buffer |
1416 | * |
1417 | * >> NOTE: SMT_BUF and DMA_RD are always set for PCI. << |
1418 | * Out |
1419 | * Returns the pyhsical address for the DMA transfer. |
1420 | * |
1421 | ************************/ |
1422 | u_long dma_master(struct s_smc * smc, void *virt, int len, int flag) |
1423 | { |
1424 | return smc->os.SharedMemDMA + |
1425 | ((char *) virt - (char *)smc->os.SharedMemAddr); |
1426 | } // dma_master |
1427 | |
1428 | |
1429 | /************************ |
1430 | * |
1431 | * dma_complete |
1432 | * |
1433 | * The hardware module calls this routine when it has completed a DMA |
1434 | * transfer. If the operating system dependent module has set up the DMA |
1435 | * channel via dma_master() (e.g. Windows NT or AIX) it should clean up |
1436 | * the DMA channel. |
1437 | * Args |
1438 | * smc - A pointer to the SMT context struct. |
1439 | * |
1440 | * descr - A pointer to a TxD or RxD, respectively. |
1441 | * |
1442 | * flag - Indicates the DMA transfer direction / SMT buffer: |
1443 | * DMA_RD (0x01) system RAM ==> adapter buffer memory |
1444 | * DMA_WR (0x02) adapter buffer memory ==> system RAM |
1445 | * SMT_BUF (0x80) SMT buffer (managed by HWM) |
1446 | * Out |
1447 | * Nothing. |
1448 | * |
1449 | ************************/ |
1450 | void dma_complete(struct s_smc *smc, volatile union s_fp_descr *descr, int flag) |
1451 | { |
1452 | /* For TX buffers, there are two cases. If it is an SMT transmit |
1453 | * buffer, there is nothing to do since we use consistent memory |
1454 | * for the 'shared' memory area. The other case is for normal |
1455 | * transmit packets given to us by the networking stack, and in |
1456 | * that case we cleanup the PCI DMA mapping in mac_drv_tx_complete |
1457 | * below. |
1458 | * |
1459 | * For RX buffers, we have to unmap dynamic PCI DMA mappings here |
1460 | * because the hardware module is about to potentially look at |
1461 | * the contents of the buffer. If we did not call the PCI DMA |
1462 | * unmap first, the hardware module could read inconsistent data. |
1463 | */ |
1464 | if (flag & DMA_WR) { |
1465 | skfddi_priv *bp = &smc->os; |
1466 | volatile struct s_smt_fp_rxd *r = &descr->r; |
1467 | |
1468 | /* If SKB is NULL, we used the local buffer. */ |
1469 | if (r->rxd_os.skb && r->rxd_os.dma_addr) { |
1470 | int MaxFrameSize = bp->MaxFrameSize; |
1471 | |
1472 | dma_unmap_single(&(&bp->pdev)->dev, |
1473 | r->rxd_os.dma_addr, MaxFrameSize, |
1474 | DMA_FROM_DEVICE); |
1475 | r->rxd_os.dma_addr = 0; |
1476 | } |
1477 | } |
1478 | } // dma_complete |
1479 | |
1480 | |
1481 | /************************ |
1482 | * |
1483 | * mac_drv_tx_complete |
1484 | * |
1485 | * Transmit of a packet is complete. Release the tx staging buffer. |
1486 | * |
1487 | * Args |
1488 | * smc - A pointer to the SMT context struct. |
1489 | * |
1490 | * txd - A pointer to the last TxD which is used by the frame. |
1491 | * Out |
1492 | * Returns nothing. |
1493 | * |
1494 | ************************/ |
1495 | void mac_drv_tx_complete(struct s_smc *smc, volatile struct s_smt_fp_txd *txd) |
1496 | { |
1497 | struct sk_buff *skb; |
1498 | |
1499 | pr_debug("entering mac_drv_tx_complete\n" ); |
1500 | // Check if this TxD points to a skb |
1501 | |
1502 | if (!(skb = txd->txd_os.skb)) { |
1503 | pr_debug("TXD with no skb assigned.\n" ); |
1504 | return; |
1505 | } |
1506 | txd->txd_os.skb = NULL; |
1507 | |
1508 | // release the DMA mapping |
1509 | dma_unmap_single(&(&smc->os.pdev)->dev, txd->txd_os.dma_addr, |
1510 | skb->len, DMA_TO_DEVICE); |
1511 | txd->txd_os.dma_addr = 0; |
1512 | |
1513 | smc->os.MacStat.gen.tx_packets++; // Count transmitted packets. |
1514 | smc->os.MacStat.gen.tx_bytes+=skb->len; // Count bytes |
1515 | |
1516 | // free the skb |
1517 | dev_kfree_skb_irq(skb); |
1518 | |
1519 | pr_debug("leaving mac_drv_tx_complete\n" ); |
1520 | } // mac_drv_tx_complete |
1521 | |
1522 | |
1523 | /************************ |
1524 | * |
1525 | * dump packets to logfile |
1526 | * |
1527 | ************************/ |
1528 | #ifdef DUMPPACKETS |
1529 | void dump_data(unsigned char *Data, int length) |
1530 | { |
1531 | printk(KERN_INFO "---Packet start---\n" ); |
1532 | print_hex_dump(KERN_INFO, "" , DUMP_PREFIX_NONE, 16, 1, Data, min_t(size_t, length, 64), false); |
1533 | printk(KERN_INFO "------------------\n" ); |
1534 | } // dump_data |
1535 | #else |
1536 | #define dump_data(data,len) |
1537 | #endif // DUMPPACKETS |
1538 | |
1539 | /************************ |
1540 | * |
1541 | * mac_drv_rx_complete |
1542 | * |
1543 | * The hardware module calls this function if an LLC frame is received |
1544 | * in a receive buffer. Also the SMT, NSA, and directed beacon frames |
1545 | * from the network will be passed to the LLC layer by this function |
1546 | * if passing is enabled. |
1547 | * |
1548 | * mac_drv_rx_complete forwards the frame to the LLC layer if it should |
1549 | * be received. It also fills the RxD ring with new receive buffers if |
1550 | * some can be queued. |
1551 | * Args |
1552 | * smc - A pointer to the SMT context struct. |
1553 | * |
1554 | * rxd - A pointer to the first RxD which is used by the receive frame. |
1555 | * |
1556 | * frag_count - Count of RxDs used by the received frame. |
1557 | * |
1558 | * len - Frame length. |
1559 | * Out |
1560 | * Nothing. |
1561 | * |
1562 | ************************/ |
1563 | void mac_drv_rx_complete(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, |
1564 | int frag_count, int len) |
1565 | { |
1566 | skfddi_priv *bp = &smc->os; |
1567 | struct sk_buff *skb; |
1568 | unsigned char *virt, *cp; |
1569 | unsigned short ri; |
1570 | u_int RifLength; |
1571 | |
1572 | pr_debug("entering mac_drv_rx_complete (len=%d)\n" , len); |
1573 | if (frag_count != 1) { // This is not allowed to happen. |
1574 | |
1575 | printk("fddi: Multi-fragment receive!\n" ); |
1576 | goto RequeueRxd; // Re-use the given RXD(s). |
1577 | |
1578 | } |
1579 | skb = rxd->rxd_os.skb; |
1580 | if (!skb) { |
1581 | pr_debug("No skb in rxd\n" ); |
1582 | smc->os.MacStat.gen.rx_errors++; |
1583 | goto RequeueRxd; |
1584 | } |
1585 | virt = skb->data; |
1586 | |
1587 | // The DMA mapping was released in dma_complete above. |
1588 | |
1589 | dump_data(skb->data, len); |
1590 | |
1591 | /* |
1592 | * FDDI Frame format: |
1593 | * +-------+-------+-------+------------+--------+------------+ |
1594 | * | FC[1] | DA[6] | SA[6] | RIF[0..18] | LLC[3] | Data[0..n] | |
1595 | * +-------+-------+-------+------------+--------+------------+ |
1596 | * |
1597 | * FC = Frame Control |
1598 | * DA = Destination Address |
1599 | * SA = Source Address |
1600 | * RIF = Routing Information Field |
1601 | * LLC = Logical Link Control |
1602 | */ |
1603 | |
1604 | // Remove Routing Information Field (RIF), if present. |
1605 | |
1606 | if ((virt[1 + 6] & FDDI_RII) == 0) |
1607 | RifLength = 0; |
1608 | else { |
1609 | int n; |
1610 | // goos: RIF removal has still to be tested |
1611 | pr_debug("RIF found\n" ); |
1612 | // Get RIF length from Routing Control (RC) field. |
1613 | cp = virt + FDDI_MAC_HDR_LEN; // Point behind MAC header. |
1614 | |
1615 | ri = ntohs(*((__be16 *) cp)); |
1616 | RifLength = ri & FDDI_RCF_LEN_MASK; |
1617 | if (len < (int) (FDDI_MAC_HDR_LEN + RifLength)) { |
1618 | printk("fddi: Invalid RIF.\n" ); |
1619 | goto RequeueRxd; // Discard the frame. |
1620 | |
1621 | } |
1622 | virt[1 + 6] &= ~FDDI_RII; // Clear RII bit. |
1623 | // regions overlap |
1624 | |
1625 | virt = cp + RifLength; |
1626 | for (n = FDDI_MAC_HDR_LEN; n; n--) |
1627 | *--virt = *--cp; |
1628 | // adjust sbd->data pointer |
1629 | skb_pull(skb, len: RifLength); |
1630 | len -= RifLength; |
1631 | RifLength = 0; |
1632 | } |
1633 | |
1634 | // Count statistics. |
1635 | smc->os.MacStat.gen.rx_packets++; // Count indicated receive |
1636 | // packets. |
1637 | smc->os.MacStat.gen.rx_bytes+=len; // Count bytes. |
1638 | |
1639 | // virt points to header again |
1640 | if (virt[1] & 0x01) { // Check group (multicast) bit. |
1641 | |
1642 | smc->os.MacStat.gen.multicast++; |
1643 | } |
1644 | |
1645 | // deliver frame to system |
1646 | rxd->rxd_os.skb = NULL; |
1647 | skb_trim(skb, len); |
1648 | skb->protocol = fddi_type_trans(skb, dev: bp->dev); |
1649 | |
1650 | netif_rx(skb); |
1651 | |
1652 | HWM_RX_CHECK(smc, RX_LOW_WATERMARK); |
1653 | return; |
1654 | |
1655 | RequeueRxd: |
1656 | pr_debug("Rx: re-queue RXD.\n" ); |
1657 | mac_drv_requeue_rxd(smc, rxd, frag_count); |
1658 | smc->os.MacStat.gen.rx_errors++; // Count receive packets |
1659 | // not indicated. |
1660 | |
1661 | } // mac_drv_rx_complete |
1662 | |
1663 | |
1664 | /************************ |
1665 | * |
1666 | * mac_drv_requeue_rxd |
1667 | * |
1668 | * The hardware module calls this function to request the OS-specific |
1669 | * module to queue the receive buffer(s) represented by the pointer |
1670 | * to the RxD and the frag_count into the receive queue again. This |
1671 | * buffer was filled with an invalid frame or an SMT frame. |
1672 | * Args |
1673 | * smc - A pointer to the SMT context struct. |
1674 | * |
1675 | * rxd - A pointer to the first RxD which is used by the receive frame. |
1676 | * |
1677 | * frag_count - Count of RxDs used by the received frame. |
1678 | * Out |
1679 | * Nothing. |
1680 | * |
1681 | ************************/ |
1682 | void mac_drv_requeue_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, |
1683 | int frag_count) |
1684 | { |
1685 | volatile struct s_smt_fp_rxd *next_rxd; |
1686 | volatile struct s_smt_fp_rxd *src_rxd; |
1687 | struct sk_buff *skb; |
1688 | int MaxFrameSize; |
1689 | unsigned char *v_addr; |
1690 | dma_addr_t b_addr; |
1691 | |
1692 | if (frag_count != 1) // This is not allowed to happen. |
1693 | |
1694 | printk("fddi: Multi-fragment requeue!\n" ); |
1695 | |
1696 | MaxFrameSize = smc->os.MaxFrameSize; |
1697 | src_rxd = rxd; |
1698 | for (; frag_count > 0; frag_count--) { |
1699 | next_rxd = src_rxd->rxd_next; |
1700 | rxd = HWM_GET_CURR_RXD(smc); |
1701 | |
1702 | skb = src_rxd->rxd_os.skb; |
1703 | if (skb == NULL) { // this should not happen |
1704 | |
1705 | pr_debug("Requeue with no skb in rxd!\n" ); |
1706 | skb = alloc_skb(size: MaxFrameSize + 3, GFP_ATOMIC); |
1707 | if (skb) { |
1708 | // we got a skb |
1709 | rxd->rxd_os.skb = skb; |
1710 | skb_reserve(skb, len: 3); |
1711 | skb_put(skb, len: MaxFrameSize); |
1712 | v_addr = skb->data; |
1713 | b_addr = dma_map_single(&(&smc->os.pdev)->dev, |
1714 | v_addr, MaxFrameSize, |
1715 | DMA_FROM_DEVICE); |
1716 | rxd->rxd_os.dma_addr = b_addr; |
1717 | } else { |
1718 | // no skb available, use local buffer |
1719 | pr_debug("Queueing invalid buffer!\n" ); |
1720 | rxd->rxd_os.skb = NULL; |
1721 | v_addr = smc->os.LocalRxBuffer; |
1722 | b_addr = smc->os.LocalRxBufferDMA; |
1723 | } |
1724 | } else { |
1725 | // we use skb from old rxd |
1726 | rxd->rxd_os.skb = skb; |
1727 | v_addr = skb->data; |
1728 | b_addr = dma_map_single(&(&smc->os.pdev)->dev, v_addr, |
1729 | MaxFrameSize, DMA_FROM_DEVICE); |
1730 | rxd->rxd_os.dma_addr = b_addr; |
1731 | } |
1732 | hwm_rx_frag(smc, virt: v_addr, phys: b_addr, len: MaxFrameSize, |
1733 | FIRST_FRAG | LAST_FRAG); |
1734 | |
1735 | src_rxd = next_rxd; |
1736 | } |
1737 | } // mac_drv_requeue_rxd |
1738 | |
1739 | |
1740 | /************************ |
1741 | * |
1742 | * mac_drv_fill_rxd |
1743 | * |
1744 | * The hardware module calls this function at initialization time |
1745 | * to fill the RxD ring with receive buffers. It is also called by |
1746 | * mac_drv_rx_complete if rx_free is large enough to queue some new |
1747 | * receive buffers into the RxD ring. mac_drv_fill_rxd queues new |
1748 | * receive buffers as long as enough RxDs and receive buffers are |
1749 | * available. |
1750 | * Args |
1751 | * smc - A pointer to the SMT context struct. |
1752 | * Out |
1753 | * Nothing. |
1754 | * |
1755 | ************************/ |
1756 | void mac_drv_fill_rxd(struct s_smc *smc) |
1757 | { |
1758 | int MaxFrameSize; |
1759 | unsigned char *v_addr; |
1760 | unsigned long b_addr; |
1761 | struct sk_buff *skb; |
1762 | volatile struct s_smt_fp_rxd *rxd; |
1763 | |
1764 | pr_debug("entering mac_drv_fill_rxd\n" ); |
1765 | |
1766 | // Walk through the list of free receive buffers, passing receive |
1767 | // buffers to the HWM as long as RXDs are available. |
1768 | |
1769 | MaxFrameSize = smc->os.MaxFrameSize; |
1770 | // Check if there is any RXD left. |
1771 | while (HWM_GET_RX_FREE(smc) > 0) { |
1772 | pr_debug(".\n" ); |
1773 | |
1774 | rxd = HWM_GET_CURR_RXD(smc); |
1775 | skb = alloc_skb(size: MaxFrameSize + 3, GFP_ATOMIC); |
1776 | if (skb) { |
1777 | // we got a skb |
1778 | skb_reserve(skb, len: 3); |
1779 | skb_put(skb, len: MaxFrameSize); |
1780 | v_addr = skb->data; |
1781 | b_addr = dma_map_single(&(&smc->os.pdev)->dev, v_addr, |
1782 | MaxFrameSize, DMA_FROM_DEVICE); |
1783 | rxd->rxd_os.dma_addr = b_addr; |
1784 | } else { |
1785 | // no skb available, use local buffer |
1786 | // System has run out of buffer memory, but we want to |
1787 | // keep the receiver running in hope of better times. |
1788 | // Multiple descriptors may point to this local buffer, |
1789 | // so data in it must be considered invalid. |
1790 | pr_debug("Queueing invalid buffer!\n" ); |
1791 | v_addr = smc->os.LocalRxBuffer; |
1792 | b_addr = smc->os.LocalRxBufferDMA; |
1793 | } |
1794 | |
1795 | rxd->rxd_os.skb = skb; |
1796 | |
1797 | // Pass receive buffer to HWM. |
1798 | hwm_rx_frag(smc, virt: v_addr, phys: b_addr, len: MaxFrameSize, |
1799 | FIRST_FRAG | LAST_FRAG); |
1800 | } |
1801 | pr_debug("leaving mac_drv_fill_rxd\n" ); |
1802 | } // mac_drv_fill_rxd |
1803 | |
1804 | |
1805 | /************************ |
1806 | * |
1807 | * mac_drv_clear_rxd |
1808 | * |
1809 | * The hardware module calls this function to release unused |
1810 | * receive buffers. |
1811 | * Args |
1812 | * smc - A pointer to the SMT context struct. |
1813 | * |
1814 | * rxd - A pointer to the first RxD which is used by the receive buffer. |
1815 | * |
1816 | * frag_count - Count of RxDs used by the receive buffer. |
1817 | * Out |
1818 | * Nothing. |
1819 | * |
1820 | ************************/ |
1821 | void mac_drv_clear_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, |
1822 | int frag_count) |
1823 | { |
1824 | |
1825 | struct sk_buff *skb; |
1826 | |
1827 | pr_debug("entering mac_drv_clear_rxd\n" ); |
1828 | |
1829 | if (frag_count != 1) // This is not allowed to happen. |
1830 | |
1831 | printk("fddi: Multi-fragment clear!\n" ); |
1832 | |
1833 | for (; frag_count > 0; frag_count--) { |
1834 | skb = rxd->rxd_os.skb; |
1835 | if (skb != NULL) { |
1836 | skfddi_priv *bp = &smc->os; |
1837 | int MaxFrameSize = bp->MaxFrameSize; |
1838 | |
1839 | dma_unmap_single(&(&bp->pdev)->dev, |
1840 | rxd->rxd_os.dma_addr, MaxFrameSize, |
1841 | DMA_FROM_DEVICE); |
1842 | |
1843 | dev_kfree_skb(skb); |
1844 | rxd->rxd_os.skb = NULL; |
1845 | } |
1846 | rxd = rxd->rxd_next; // Next RXD. |
1847 | |
1848 | } |
1849 | } // mac_drv_clear_rxd |
1850 | |
1851 | |
1852 | /************************ |
1853 | * |
1854 | * mac_drv_rx_init |
1855 | * |
1856 | * The hardware module calls this routine when an SMT or NSA frame of the |
1857 | * local SMT should be delivered to the LLC layer. |
1858 | * |
1859 | * It is necessary to have this function, because there is no other way to |
1860 | * copy the contents of SMT MBufs into receive buffers. |
1861 | * |
1862 | * mac_drv_rx_init allocates the required target memory for this frame, |
1863 | * and receives the frame fragment by fragment by calling mac_drv_rx_frag. |
1864 | * Args |
1865 | * smc - A pointer to the SMT context struct. |
1866 | * |
1867 | * len - The length (in bytes) of the received frame (FC, DA, SA, Data). |
1868 | * |
1869 | * fc - The Frame Control field of the received frame. |
1870 | * |
1871 | * look_ahead - A pointer to the lookahead data buffer (may be NULL). |
1872 | * |
1873 | * la_len - The length of the lookahead data stored in the lookahead |
1874 | * buffer (may be zero). |
1875 | * Out |
1876 | * Always returns zero (0). |
1877 | * |
1878 | ************************/ |
1879 | int mac_drv_rx_init(struct s_smc *smc, int len, int fc, |
1880 | char *look_ahead, int la_len) |
1881 | { |
1882 | struct sk_buff *skb; |
1883 | |
1884 | pr_debug("entering mac_drv_rx_init(len=%d)\n" , len); |
1885 | |
1886 | // "Received" a SMT or NSA frame of the local SMT. |
1887 | |
1888 | if (len != la_len || len < FDDI_MAC_HDR_LEN || !look_ahead) { |
1889 | pr_debug("fddi: Discard invalid local SMT frame\n" ); |
1890 | pr_debug(" len=%d, la_len=%d, (ULONG) look_ahead=%08lXh.\n" , |
1891 | len, la_len, (unsigned long) look_ahead); |
1892 | return 0; |
1893 | } |
1894 | skb = alloc_skb(size: len + 3, GFP_ATOMIC); |
1895 | if (!skb) { |
1896 | pr_debug("fddi: Local SMT: skb memory exhausted.\n" ); |
1897 | return 0; |
1898 | } |
1899 | skb_reserve(skb, len: 3); |
1900 | skb_put(skb, len); |
1901 | skb_copy_to_linear_data(skb, from: look_ahead, len); |
1902 | |
1903 | // deliver frame to system |
1904 | skb->protocol = fddi_type_trans(skb, dev: smc->os.dev); |
1905 | netif_rx(skb); |
1906 | |
1907 | return 0; |
1908 | } // mac_drv_rx_init |
1909 | |
1910 | |
1911 | /************************ |
1912 | * |
1913 | * smt_timer_poll |
1914 | * |
1915 | * This routine is called periodically by the SMT module to clean up the |
1916 | * driver. |
1917 | * |
1918 | * Return any queued frames back to the upper protocol layers if the ring |
1919 | * is down. |
1920 | * Args |
1921 | * smc - A pointer to the SMT context struct. |
1922 | * Out |
1923 | * Nothing. |
1924 | * |
1925 | ************************/ |
1926 | void smt_timer_poll(struct s_smc *smc) |
1927 | { |
1928 | } // smt_timer_poll |
1929 | |
1930 | |
1931 | /************************ |
1932 | * |
1933 | * ring_status_indication |
1934 | * |
1935 | * This function indicates a change of the ring state. |
1936 | * Args |
1937 | * smc - A pointer to the SMT context struct. |
1938 | * |
1939 | * status - The current ring status. |
1940 | * Out |
1941 | * Nothing. |
1942 | * |
1943 | ************************/ |
1944 | void ring_status_indication(struct s_smc *smc, u_long status) |
1945 | { |
1946 | pr_debug("ring_status_indication( " ); |
1947 | if (status & RS_RES15) |
1948 | pr_debug("RS_RES15 " ); |
1949 | if (status & RS_HARDERROR) |
1950 | pr_debug("RS_HARDERROR " ); |
1951 | if (status & RS_SOFTERROR) |
1952 | pr_debug("RS_SOFTERROR " ); |
1953 | if (status & RS_BEACON) |
1954 | pr_debug("RS_BEACON " ); |
1955 | if (status & RS_PATHTEST) |
1956 | pr_debug("RS_PATHTEST " ); |
1957 | if (status & RS_SELFTEST) |
1958 | pr_debug("RS_SELFTEST " ); |
1959 | if (status & RS_RES9) |
1960 | pr_debug("RS_RES9 " ); |
1961 | if (status & RS_DISCONNECT) |
1962 | pr_debug("RS_DISCONNECT " ); |
1963 | if (status & RS_RES7) |
1964 | pr_debug("RS_RES7 " ); |
1965 | if (status & RS_DUPADDR) |
1966 | pr_debug("RS_DUPADDR " ); |
1967 | if (status & RS_NORINGOP) |
1968 | pr_debug("RS_NORINGOP " ); |
1969 | if (status & RS_VERSION) |
1970 | pr_debug("RS_VERSION " ); |
1971 | if (status & RS_STUCKBYPASSS) |
1972 | pr_debug("RS_STUCKBYPASSS " ); |
1973 | if (status & RS_EVENT) |
1974 | pr_debug("RS_EVENT " ); |
1975 | if (status & RS_RINGOPCHANGE) |
1976 | pr_debug("RS_RINGOPCHANGE " ); |
1977 | if (status & RS_RES0) |
1978 | pr_debug("RS_RES0 " ); |
1979 | pr_debug("]\n" ); |
1980 | } // ring_status_indication |
1981 | |
1982 | |
1983 | /************************ |
1984 | * |
1985 | * smt_get_time |
1986 | * |
1987 | * Gets the current time from the system. |
1988 | * Args |
1989 | * None. |
1990 | * Out |
1991 | * The current time in TICKS_PER_SECOND. |
1992 | * |
1993 | * TICKS_PER_SECOND has the unit 'count of timer ticks per second'. It is |
1994 | * defined in "targetos.h". The definition of TICKS_PER_SECOND must comply |
1995 | * to the time returned by smt_get_time(). |
1996 | * |
1997 | ************************/ |
1998 | unsigned long smt_get_time(void) |
1999 | { |
2000 | return jiffies; |
2001 | } // smt_get_time |
2002 | |
2003 | |
2004 | /************************ |
2005 | * |
2006 | * smt_stat_counter |
2007 | * |
2008 | * Status counter update (ring_op, fifo full). |
2009 | * Args |
2010 | * smc - A pointer to the SMT context struct. |
2011 | * |
2012 | * stat - = 0: A ring operational change occurred. |
2013 | * = 1: The FORMAC FIFO buffer is full / FIFO overflow. |
2014 | * Out |
2015 | * Nothing. |
2016 | * |
2017 | ************************/ |
2018 | void smt_stat_counter(struct s_smc *smc, int stat) |
2019 | { |
2020 | // BOOLEAN RingIsUp ; |
2021 | |
2022 | pr_debug("smt_stat_counter\n" ); |
2023 | switch (stat) { |
2024 | case 0: |
2025 | pr_debug("Ring operational change.\n" ); |
2026 | break; |
2027 | case 1: |
2028 | pr_debug("Receive fifo overflow.\n" ); |
2029 | smc->os.MacStat.gen.rx_errors++; |
2030 | break; |
2031 | default: |
2032 | pr_debug("Unknown status (%d).\n" , stat); |
2033 | break; |
2034 | } |
2035 | } // smt_stat_counter |
2036 | |
2037 | |
2038 | /************************ |
2039 | * |
2040 | * cfm_state_change |
2041 | * |
2042 | * Sets CFM state in custom statistics. |
2043 | * Args |
2044 | * smc - A pointer to the SMT context struct. |
2045 | * |
2046 | * c_state - Possible values are: |
2047 | * |
2048 | * EC0_OUT, EC1_IN, EC2_TRACE, EC3_LEAVE, EC4_PATH_TEST, |
2049 | * EC5_INSERT, EC6_CHECK, EC7_DEINSERT |
2050 | * Out |
2051 | * Nothing. |
2052 | * |
2053 | ************************/ |
2054 | void cfm_state_change(struct s_smc *smc, int c_state) |
2055 | { |
2056 | #ifdef DRIVERDEBUG |
2057 | char *s; |
2058 | |
2059 | switch (c_state) { |
2060 | case SC0_ISOLATED: |
2061 | s = "SC0_ISOLATED" ; |
2062 | break; |
2063 | case SC1_WRAP_A: |
2064 | s = "SC1_WRAP_A" ; |
2065 | break; |
2066 | case SC2_WRAP_B: |
2067 | s = "SC2_WRAP_B" ; |
2068 | break; |
2069 | case SC4_THRU_A: |
2070 | s = "SC4_THRU_A" ; |
2071 | break; |
2072 | case SC5_THRU_B: |
2073 | s = "SC5_THRU_B" ; |
2074 | break; |
2075 | case SC7_WRAP_S: |
2076 | s = "SC7_WRAP_S" ; |
2077 | break; |
2078 | case SC9_C_WRAP_A: |
2079 | s = "SC9_C_WRAP_A" ; |
2080 | break; |
2081 | case SC10_C_WRAP_B: |
2082 | s = "SC10_C_WRAP_B" ; |
2083 | break; |
2084 | case SC11_C_WRAP_S: |
2085 | s = "SC11_C_WRAP_S" ; |
2086 | break; |
2087 | default: |
2088 | pr_debug("cfm_state_change: unknown %d\n" , c_state); |
2089 | return; |
2090 | } |
2091 | pr_debug("cfm_state_change: %s\n" , s); |
2092 | #endif // DRIVERDEBUG |
2093 | } // cfm_state_change |
2094 | |
2095 | |
2096 | /************************ |
2097 | * |
2098 | * ecm_state_change |
2099 | * |
2100 | * Sets ECM state in custom statistics. |
2101 | * Args |
2102 | * smc - A pointer to the SMT context struct. |
2103 | * |
2104 | * e_state - Possible values are: |
2105 | * |
2106 | * SC0_ISOLATED, SC1_WRAP_A (5), SC2_WRAP_B (6), SC4_THRU_A (12), |
2107 | * SC5_THRU_B (7), SC7_WRAP_S (8) |
2108 | * Out |
2109 | * Nothing. |
2110 | * |
2111 | ************************/ |
2112 | void ecm_state_change(struct s_smc *smc, int e_state) |
2113 | { |
2114 | #ifdef DRIVERDEBUG |
2115 | char *s; |
2116 | |
2117 | switch (e_state) { |
2118 | case EC0_OUT: |
2119 | s = "EC0_OUT" ; |
2120 | break; |
2121 | case EC1_IN: |
2122 | s = "EC1_IN" ; |
2123 | break; |
2124 | case EC2_TRACE: |
2125 | s = "EC2_TRACE" ; |
2126 | break; |
2127 | case EC3_LEAVE: |
2128 | s = "EC3_LEAVE" ; |
2129 | break; |
2130 | case EC4_PATH_TEST: |
2131 | s = "EC4_PATH_TEST" ; |
2132 | break; |
2133 | case EC5_INSERT: |
2134 | s = "EC5_INSERT" ; |
2135 | break; |
2136 | case EC6_CHECK: |
2137 | s = "EC6_CHECK" ; |
2138 | break; |
2139 | case EC7_DEINSERT: |
2140 | s = "EC7_DEINSERT" ; |
2141 | break; |
2142 | default: |
2143 | s = "unknown" ; |
2144 | break; |
2145 | } |
2146 | pr_debug("ecm_state_change: %s\n" , s); |
2147 | #endif //DRIVERDEBUG |
2148 | } // ecm_state_change |
2149 | |
2150 | |
2151 | /************************ |
2152 | * |
2153 | * rmt_state_change |
2154 | * |
2155 | * Sets RMT state in custom statistics. |
2156 | * Args |
2157 | * smc - A pointer to the SMT context struct. |
2158 | * |
2159 | * r_state - Possible values are: |
2160 | * |
2161 | * RM0_ISOLATED, RM1_NON_OP, RM2_RING_OP, RM3_DETECT, |
2162 | * RM4_NON_OP_DUP, RM5_RING_OP_DUP, RM6_DIRECTED, RM7_TRACE |
2163 | * Out |
2164 | * Nothing. |
2165 | * |
2166 | ************************/ |
2167 | void rmt_state_change(struct s_smc *smc, int r_state) |
2168 | { |
2169 | #ifdef DRIVERDEBUG |
2170 | char *s; |
2171 | |
2172 | switch (r_state) { |
2173 | case RM0_ISOLATED: |
2174 | s = "RM0_ISOLATED" ; |
2175 | break; |
2176 | case RM1_NON_OP: |
2177 | s = "RM1_NON_OP - not operational" ; |
2178 | break; |
2179 | case RM2_RING_OP: |
2180 | s = "RM2_RING_OP - ring operational" ; |
2181 | break; |
2182 | case RM3_DETECT: |
2183 | s = "RM3_DETECT - detect dupl addresses" ; |
2184 | break; |
2185 | case RM4_NON_OP_DUP: |
2186 | s = "RM4_NON_OP_DUP - dupl. addr detected" ; |
2187 | break; |
2188 | case RM5_RING_OP_DUP: |
2189 | s = "RM5_RING_OP_DUP - ring oper. with dupl. addr" ; |
2190 | break; |
2191 | case RM6_DIRECTED: |
2192 | s = "RM6_DIRECTED - sending directed beacons" ; |
2193 | break; |
2194 | case RM7_TRACE: |
2195 | s = "RM7_TRACE - trace initiated" ; |
2196 | break; |
2197 | default: |
2198 | s = "unknown" ; |
2199 | break; |
2200 | } |
2201 | pr_debug("[rmt_state_change: %s]\n" , s); |
2202 | #endif // DRIVERDEBUG |
2203 | } // rmt_state_change |
2204 | |
2205 | |
2206 | /************************ |
2207 | * |
2208 | * drv_reset_indication |
2209 | * |
2210 | * This function is called by the SMT when it has detected a severe |
2211 | * hardware problem. The driver should perform a reset on the adapter |
2212 | * as soon as possible, but not from within this function. |
2213 | * Args |
2214 | * smc - A pointer to the SMT context struct. |
2215 | * Out |
2216 | * Nothing. |
2217 | * |
2218 | ************************/ |
2219 | void drv_reset_indication(struct s_smc *smc) |
2220 | { |
2221 | pr_debug("entering drv_reset_indication\n" ); |
2222 | |
2223 | smc->os.ResetRequested = TRUE; // Set flag. |
2224 | |
2225 | } // drv_reset_indication |
2226 | |
2227 | static struct pci_driver skfddi_pci_driver = { |
2228 | .name = "skfddi" , |
2229 | .id_table = skfddi_pci_tbl, |
2230 | .probe = skfp_init_one, |
2231 | .remove = skfp_remove_one, |
2232 | }; |
2233 | |
2234 | module_pci_driver(skfddi_pci_driver); |
2235 | |