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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. | |
eef35c2d | 36 | * All hardware dependent functions are handled by the SysKonnect |
1da177e4 LT |
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 | ||
f71e1309 | 70 | static const char * const boot_msg = |
1da177e4 LT |
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 | ||
d43c36dc | 76 | #include <linux/capability.h> |
1da177e4 LT |
77 | #include <linux/module.h> |
78 | #include <linux/kernel.h> | |
79 | #include <linux/errno.h> | |
80 | #include <linux/ioport.h> | |
1da177e4 LT |
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> | |
5a0e3ad6 | 87 | #include <linux/gfp.h> |
1da177e4 LT |
88 | |
89 | #include <asm/byteorder.h> | |
90 | #include <asm/io.h> | |
91 | #include <asm/uaccess.h> | |
92 | ||
93 | #include "h/types.h" | |
94 | #undef ADDR // undo Linux definition | |
95 | #include "h/skfbi.h" | |
96 | #include "h/fddi.h" | |
97 | #include "h/smc.h" | |
98 | #include "h/smtstate.h" | |
99 | ||
100 | ||
101 | // Define module-wide (static) routines | |
102 | static int skfp_driver_init(struct net_device *dev); | |
103 | static int skfp_open(struct net_device *dev); | |
104 | static int skfp_close(struct net_device *dev); | |
7d12e780 | 105 | static irqreturn_t skfp_interrupt(int irq, void *dev_id); |
1da177e4 LT |
106 | static struct net_device_stats *skfp_ctl_get_stats(struct net_device *dev); |
107 | static void skfp_ctl_set_multicast_list(struct net_device *dev); | |
108 | static void skfp_ctl_set_multicast_list_wo_lock(struct net_device *dev); | |
109 | static int skfp_ctl_set_mac_address(struct net_device *dev, void *addr); | |
110 | static int skfp_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
61357325 SH |
111 | static netdev_tx_t skfp_send_pkt(struct sk_buff *skb, |
112 | struct net_device *dev); | |
1da177e4 LT |
113 | static void send_queued_packets(struct s_smc *smc); |
114 | static void CheckSourceAddress(unsigned char *frame, unsigned char *hw_addr); | |
115 | static void ResetAdapter(struct s_smc *smc); | |
116 | ||
117 | ||
118 | // Functions needed by the hardware module | |
119 | void *mac_drv_get_space(struct s_smc *smc, u_int size); | |
120 | void *mac_drv_get_desc_mem(struct s_smc *smc, u_int size); | |
121 | unsigned long mac_drv_virt2phys(struct s_smc *smc, void *virt); | |
122 | unsigned long dma_master(struct s_smc *smc, void *virt, int len, int flag); | |
123 | void dma_complete(struct s_smc *smc, volatile union s_fp_descr *descr, | |
124 | int flag); | |
125 | void mac_drv_tx_complete(struct s_smc *smc, volatile struct s_smt_fp_txd *txd); | |
126 | void llc_restart_tx(struct s_smc *smc); | |
127 | void mac_drv_rx_complete(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, | |
128 | int frag_count, int len); | |
129 | void mac_drv_requeue_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, | |
130 | int frag_count); | |
131 | void mac_drv_fill_rxd(struct s_smc *smc); | |
132 | void mac_drv_clear_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, | |
133 | int frag_count); | |
134 | int mac_drv_rx_init(struct s_smc *smc, int len, int fc, char *look_ahead, | |
135 | int la_len); | |
136 | void dump_data(unsigned char *Data, int length); | |
137 | ||
138 | // External functions from the hardware module | |
139 | extern u_int mac_drv_check_space(void); | |
1da177e4 LT |
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); | |
1da177e4 LT |
145 | extern void fddi_isr(struct s_smc *smc); |
146 | extern void hwm_rx_frag(struct s_smc *smc, char far * virt, u_long phys, | |
147 | int len, int frame_status); | |
148 | extern void mac_drv_rx_mode(struct s_smc *smc, int mode); | |
149 | extern void mac_drv_clear_rx_queue(struct s_smc *smc); | |
150 | extern void enable_tx_irq(struct s_smc *smc, u_short queue); | |
1da177e4 | 151 | |
a3aa1884 | 152 | static DEFINE_PCI_DEVICE_TABLE(skfddi_pci_tbl) = { |
1da177e4 LT |
153 | { PCI_VENDOR_ID_SK, PCI_DEVICE_ID_SK_FP, PCI_ANY_ID, PCI_ANY_ID, }, |
154 | { } /* Terminating entry */ | |
155 | }; | |
156 | MODULE_DEVICE_TABLE(pci, skfddi_pci_tbl); | |
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 | ||
145186a3 SH |
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_change_mtu = fddi_change_mtu, | |
170 | .ndo_set_multicast_list = skfp_ctl_set_multicast_list, | |
171 | .ndo_set_mac_address = skfp_ctl_set_mac_address, | |
172 | .ndo_do_ioctl = skfp_ioctl, | |
173 | }; | |
174 | ||
1da177e4 LT |
175 | /* |
176 | * ================= | |
177 | * = skfp_init_one = | |
178 | * ================= | |
179 | * | |
180 | * Overview: | |
181 | * Probes for supported FDDI PCI controllers | |
182 | * | |
183 | * Returns: | |
184 | * Condition code | |
185 | * | |
186 | * Arguments: | |
187 | * pdev - pointer to PCI device information | |
188 | * | |
189 | * Functional Description: | |
190 | * This is now called by PCI driver registration process | |
191 | * for each board found. | |
192 | * | |
193 | * Return Codes: | |
194 | * 0 - This device (fddi0, fddi1, etc) configured successfully | |
195 | * -ENODEV - No devices present, or no SysKonnect FDDI PCI device | |
196 | * present for this device name | |
197 | * | |
198 | * | |
199 | * Side Effects: | |
200 | * Device structures for FDDI adapters (fddi0, fddi1, etc) are | |
201 | * initialized and the board resources are read and stored in | |
202 | * the device structure. | |
203 | */ | |
204 | static int skfp_init_one(struct pci_dev *pdev, | |
205 | const struct pci_device_id *ent) | |
206 | { | |
207 | struct net_device *dev; | |
208 | struct s_smc *smc; /* board pointer */ | |
209 | void __iomem *mem; | |
210 | int err; | |
211 | ||
d81e27cf | 212 | pr_debug("entering skfp_init_one\n"); |
1da177e4 LT |
213 | |
214 | if (num_boards == 0) | |
215 | printk("%s\n", boot_msg); | |
216 | ||
217 | err = pci_enable_device(pdev); | |
218 | if (err) | |
219 | return err; | |
220 | ||
221 | err = pci_request_regions(pdev, "skfddi"); | |
222 | if (err) | |
223 | goto err_out1; | |
224 | ||
225 | pci_set_master(pdev); | |
226 | ||
227 | #ifdef MEM_MAPPED_IO | |
228 | if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { | |
229 | printk(KERN_ERR "skfp: region is not an MMIO resource\n"); | |
230 | err = -EIO; | |
231 | goto err_out2; | |
232 | } | |
233 | ||
234 | mem = ioremap(pci_resource_start(pdev, 0), 0x4000); | |
235 | #else | |
236 | if (!(pci_resource_flags(pdev, 1) & IO_RESOURCE_IO)) { | |
237 | printk(KERN_ERR "skfp: region is not PIO resource\n"); | |
238 | err = -EIO; | |
239 | goto err_out2; | |
240 | } | |
241 | ||
242 | mem = ioport_map(pci_resource_start(pdev, 1), FP_IO_LEN); | |
243 | #endif | |
244 | if (!mem) { | |
245 | printk(KERN_ERR "skfp: Unable to map register, " | |
246 | "FDDI adapter will be disabled.\n"); | |
247 | err = -EIO; | |
248 | goto err_out2; | |
249 | } | |
250 | ||
251 | dev = alloc_fddidev(sizeof(struct s_smc)); | |
252 | if (!dev) { | |
253 | printk(KERN_ERR "skfp: Unable to allocate fddi device, " | |
254 | "FDDI adapter will be disabled.\n"); | |
255 | err = -ENOMEM; | |
256 | goto err_out3; | |
257 | } | |
258 | ||
259 | dev->irq = pdev->irq; | |
145186a3 | 260 | dev->netdev_ops = &skfp_netdev_ops; |
1da177e4 | 261 | |
1da177e4 LT |
262 | SET_NETDEV_DEV(dev, &pdev->dev); |
263 | ||
264 | /* Initialize board structure with bus-specific info */ | |
265 | smc = netdev_priv(dev); | |
266 | smc->os.dev = dev; | |
267 | smc->os.bus_type = SK_BUS_TYPE_PCI; | |
268 | smc->os.pdev = *pdev; | |
269 | smc->os.QueueSkb = MAX_TX_QUEUE_LEN; | |
270 | smc->os.MaxFrameSize = MAX_FRAME_SIZE; | |
271 | smc->os.dev = dev; | |
272 | smc->hw.slot = -1; | |
273 | smc->hw.iop = mem; | |
274 | smc->os.ResetRequested = FALSE; | |
275 | skb_queue_head_init(&smc->os.SendSkbQueue); | |
276 | ||
277 | dev->base_addr = (unsigned long)mem; | |
278 | ||
279 | err = skfp_driver_init(dev); | |
280 | if (err) | |
281 | goto err_out4; | |
282 | ||
283 | err = register_netdev(dev); | |
284 | if (err) | |
285 | goto err_out5; | |
286 | ||
287 | ++num_boards; | |
288 | pci_set_drvdata(pdev, dev); | |
289 | ||
290 | if ((pdev->subsystem_device & 0xff00) == 0x5500 || | |
291 | (pdev->subsystem_device & 0xff00) == 0x5800) | |
292 | printk("%s: SysKonnect FDDI PCI adapter" | |
293 | " found (SK-%04X)\n", dev->name, | |
294 | pdev->subsystem_device); | |
295 | else | |
296 | printk("%s: FDDI PCI adapter found\n", dev->name); | |
297 | ||
298 | return 0; | |
299 | err_out5: | |
300 | if (smc->os.SharedMemAddr) | |
301 | pci_free_consistent(pdev, smc->os.SharedMemSize, | |
302 | smc->os.SharedMemAddr, | |
303 | smc->os.SharedMemDMA); | |
304 | pci_free_consistent(pdev, MAX_FRAME_SIZE, | |
305 | smc->os.LocalRxBuffer, smc->os.LocalRxBufferDMA); | |
306 | err_out4: | |
307 | free_netdev(dev); | |
308 | err_out3: | |
309 | #ifdef MEM_MAPPED_IO | |
310 | iounmap(mem); | |
311 | #else | |
312 | ioport_unmap(mem); | |
313 | #endif | |
314 | err_out2: | |
315 | pci_release_regions(pdev); | |
316 | err_out1: | |
317 | pci_disable_device(pdev); | |
318 | return err; | |
319 | } | |
320 | ||
321 | /* | |
322 | * Called for each adapter board from pci_unregister_driver | |
323 | */ | |
324 | static void __devexit skfp_remove_one(struct pci_dev *pdev) | |
325 | { | |
326 | struct net_device *p = pci_get_drvdata(pdev); | |
327 | struct s_smc *lp = netdev_priv(p); | |
328 | ||
329 | unregister_netdev(p); | |
330 | ||
331 | if (lp->os.SharedMemAddr) { | |
332 | pci_free_consistent(&lp->os.pdev, | |
333 | lp->os.SharedMemSize, | |
334 | lp->os.SharedMemAddr, | |
335 | lp->os.SharedMemDMA); | |
336 | lp->os.SharedMemAddr = NULL; | |
337 | } | |
338 | if (lp->os.LocalRxBuffer) { | |
339 | pci_free_consistent(&lp->os.pdev, | |
340 | MAX_FRAME_SIZE, | |
341 | lp->os.LocalRxBuffer, | |
342 | lp->os.LocalRxBufferDMA); | |
343 | lp->os.LocalRxBuffer = NULL; | |
344 | } | |
345 | #ifdef MEM_MAPPED_IO | |
346 | iounmap(lp->hw.iop); | |
347 | #else | |
348 | ioport_unmap(lp->hw.iop); | |
349 | #endif | |
350 | pci_release_regions(pdev); | |
351 | free_netdev(p); | |
352 | ||
353 | pci_disable_device(pdev); | |
354 | pci_set_drvdata(pdev, NULL); | |
355 | } | |
356 | ||
357 | /* | |
358 | * ==================== | |
359 | * = skfp_driver_init = | |
360 | * ==================== | |
361 | * | |
362 | * Overview: | |
363 | * Initializes remaining adapter board structure information | |
364 | * and makes sure adapter is in a safe state prior to skfp_open(). | |
365 | * | |
366 | * Returns: | |
367 | * Condition code | |
368 | * | |
369 | * Arguments: | |
370 | * dev - pointer to device information | |
371 | * | |
372 | * Functional Description: | |
373 | * This function allocates additional resources such as the host memory | |
374 | * blocks needed by the adapter. | |
375 | * The adapter is also reset. The OS must call skfp_open() to open | |
376 | * the adapter and bring it on-line. | |
377 | * | |
378 | * Return Codes: | |
379 | * 0 - initialization succeeded | |
380 | * -1 - initialization failed | |
381 | */ | |
382 | static int skfp_driver_init(struct net_device *dev) | |
383 | { | |
384 | struct s_smc *smc = netdev_priv(dev); | |
385 | skfddi_priv *bp = &smc->os; | |
386 | int err = -EIO; | |
387 | ||
d81e27cf | 388 | pr_debug("entering skfp_driver_init\n"); |
1da177e4 LT |
389 | |
390 | // set the io address in private structures | |
391 | bp->base_addr = dev->base_addr; | |
392 | ||
393 | // Get the interrupt level from the PCI Configuration Table | |
394 | smc->hw.irq = dev->irq; | |
395 | ||
396 | spin_lock_init(&bp->DriverLock); | |
397 | ||
398 | // Allocate invalid frame | |
399 | bp->LocalRxBuffer = pci_alloc_consistent(&bp->pdev, MAX_FRAME_SIZE, &bp->LocalRxBufferDMA); | |
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(); | |
d81e27cf | 408 | pr_debug("Memory for HWM: %ld\n", bp->SharedMemSize); |
1da177e4 LT |
409 | if (bp->SharedMemSize > 0) { |
410 | bp->SharedMemSize += 16; // for descriptor alignment | |
411 | ||
412 | bp->SharedMemAddr = pci_alloc_consistent(&bp->pdev, | |
413 | bp->SharedMemSize, | |
414 | &bp->SharedMemDMA); | |
4a5fc4e1 | 415 | if (!bp->SharedMemAddr) { |
1da177e4 LT |
416 | printk("could not allocate mem for "); |
417 | printk("hardware module: %ld byte\n", | |
418 | bp->SharedMemSize); | |
419 | goto fail; | |
420 | } | |
421 | bp->SharedMemHeap = 0; // Nothing used yet. | |
422 | ||
423 | } else { | |
424 | bp->SharedMemAddr = NULL; | |
425 | bp->SharedMemHeap = 0; | |
426 | } // SharedMemSize > 0 | |
427 | ||
428 | memset(bp->SharedMemAddr, 0, bp->SharedMemSize); | |
429 | ||
430 | card_stop(smc); // Reset adapter. | |
431 | ||
d81e27cf | 432 | pr_debug("mac_drv_init()..\n"); |
1da177e4 | 433 | if (mac_drv_init(smc) != 0) { |
d81e27cf | 434 | pr_debug("mac_drv_init() failed\n"); |
1da177e4 LT |
435 | goto fail; |
436 | } | |
437 | read_address(smc, NULL); | |
d81e27cf | 438 | pr_debug("HW-Addr: %pMF\n", smc->hw.fddi_canon_addr.a); |
1da177e4 LT |
439 | memcpy(dev->dev_addr, smc->hw.fddi_canon_addr.a, 6); |
440 | ||
441 | smt_reset_defaults(smc, 0); | |
442 | ||
807540ba | 443 | return 0; |
1da177e4 LT |
444 | |
445 | fail: | |
446 | if (bp->SharedMemAddr) { | |
447 | pci_free_consistent(&bp->pdev, | |
448 | bp->SharedMemSize, | |
449 | bp->SharedMemAddr, | |
450 | bp->SharedMemDMA); | |
451 | bp->SharedMemAddr = NULL; | |
452 | } | |
453 | if (bp->LocalRxBuffer) { | |
454 | pci_free_consistent(&bp->pdev, MAX_FRAME_SIZE, | |
455 | bp->LocalRxBuffer, bp->LocalRxBufferDMA); | |
456 | bp->LocalRxBuffer = NULL; | |
457 | } | |
458 | return err; | |
459 | } // skfp_driver_init | |
460 | ||
461 | ||
462 | /* | |
463 | * ============= | |
464 | * = skfp_open = | |
465 | * ============= | |
466 | * | |
467 | * Overview: | |
468 | * Opens the adapter | |
469 | * | |
470 | * Returns: | |
471 | * Condition code | |
472 | * | |
473 | * Arguments: | |
474 | * dev - pointer to device information | |
475 | * | |
476 | * Functional Description: | |
477 | * This function brings the adapter to an operational state. | |
478 | * | |
479 | * Return Codes: | |
480 | * 0 - Adapter was successfully opened | |
481 | * -EAGAIN - Could not register IRQ | |
482 | */ | |
483 | static int skfp_open(struct net_device *dev) | |
484 | { | |
485 | struct s_smc *smc = netdev_priv(dev); | |
486 | int err; | |
487 | ||
d81e27cf | 488 | pr_debug("entering skfp_open\n"); |
1da177e4 | 489 | /* Register IRQ - support shared interrupts by passing device ptr */ |
2f220e30 | 490 | err = request_irq(dev->irq, skfp_interrupt, IRQF_SHARED, |
1da177e4 LT |
491 | dev->name, dev); |
492 | if (err) | |
493 | return err; | |
494 | ||
495 | /* | |
496 | * Set current address to factory MAC address | |
497 | * | |
498 | * Note: We've already done this step in skfp_driver_init. | |
499 | * However, it's possible that a user has set a node | |
500 | * address override, then closed and reopened the | |
501 | * adapter. Unless we reset the device address field | |
502 | * now, we'll continue to use the existing modified | |
503 | * address. | |
504 | */ | |
505 | read_address(smc, NULL); | |
506 | memcpy(dev->dev_addr, smc->hw.fddi_canon_addr.a, 6); | |
507 | ||
508 | init_smt(smc, NULL); | |
509 | smt_online(smc, 1); | |
510 | STI_FBI(); | |
511 | ||
512 | /* Clear local multicast address tables */ | |
513 | mac_clear_multicast(smc); | |
514 | ||
515 | /* Disable promiscuous filter settings */ | |
516 | mac_drv_rx_mode(smc, RX_DISABLE_PROMISC); | |
517 | ||
518 | netif_start_queue(dev); | |
807540ba | 519 | return 0; |
1da177e4 LT |
520 | } // skfp_open |
521 | ||
522 | ||
523 | /* | |
524 | * ============== | |
525 | * = skfp_close = | |
526 | * ============== | |
527 | * | |
528 | * Overview: | |
529 | * Closes the device/module. | |
530 | * | |
531 | * Returns: | |
532 | * Condition code | |
533 | * | |
534 | * Arguments: | |
535 | * dev - pointer to device information | |
536 | * | |
537 | * Functional Description: | |
538 | * This routine closes the adapter and brings it to a safe state. | |
539 | * The interrupt service routine is deregistered with the OS. | |
540 | * The adapter can be opened again with another call to skfp_open(). | |
541 | * | |
542 | * Return Codes: | |
543 | * Always return 0. | |
544 | * | |
545 | * Assumptions: | |
546 | * No further requests for this adapter are made after this routine is | |
547 | * called. skfp_open() can be called to reset and reinitialize the | |
548 | * adapter. | |
549 | */ | |
550 | static int skfp_close(struct net_device *dev) | |
551 | { | |
552 | struct s_smc *smc = netdev_priv(dev); | |
553 | skfddi_priv *bp = &smc->os; | |
554 | ||
555 | CLI_FBI(); | |
556 | smt_reset_defaults(smc, 1); | |
557 | card_stop(smc); | |
558 | mac_drv_clear_tx_queue(smc); | |
559 | mac_drv_clear_rx_queue(smc); | |
560 | ||
561 | netif_stop_queue(dev); | |
562 | /* Deregister (free) IRQ */ | |
563 | free_irq(dev->irq, dev); | |
564 | ||
565 | skb_queue_purge(&bp->SendSkbQueue); | |
566 | bp->QueueSkb = MAX_TX_QUEUE_LEN; | |
567 | ||
807540ba | 568 | return 0; |
1da177e4 LT |
569 | } // skfp_close |
570 | ||
571 | ||
572 | /* | |
573 | * ================== | |
574 | * = skfp_interrupt = | |
575 | * ================== | |
576 | * | |
577 | * Overview: | |
578 | * Interrupt processing routine | |
579 | * | |
580 | * Returns: | |
581 | * None | |
582 | * | |
583 | * Arguments: | |
584 | * irq - interrupt vector | |
585 | * dev_id - pointer to device information | |
1da177e4 LT |
586 | * |
587 | * Functional Description: | |
588 | * This routine calls the interrupt processing routine for this adapter. It | |
589 | * disables and reenables adapter interrupts, as appropriate. We can support | |
590 | * shared interrupts since the incoming dev_id pointer provides our device | |
591 | * structure context. All the real work is done in the hardware module. | |
592 | * | |
593 | * Return Codes: | |
594 | * None | |
595 | * | |
596 | * Assumptions: | |
597 | * The interrupt acknowledgement at the hardware level (eg. ACKing the PIC | |
598 | * on Intel-based systems) is done by the operating system outside this | |
599 | * routine. | |
600 | * | |
601 | * System interrupts are enabled through this call. | |
602 | * | |
603 | * Side Effects: | |
604 | * Interrupts are disabled, then reenabled at the adapter. | |
605 | */ | |
606 | ||
409b2044 | 607 | static irqreturn_t skfp_interrupt(int irq, void *dev_id) |
1da177e4 | 608 | { |
c31f28e7 | 609 | struct net_device *dev = dev_id; |
1da177e4 LT |
610 | struct s_smc *smc; /* private board structure pointer */ |
611 | skfddi_priv *bp; | |
612 | ||
1da177e4 LT |
613 | smc = netdev_priv(dev); |
614 | bp = &smc->os; | |
615 | ||
616 | // IRQs enabled or disabled ? | |
617 | if (inpd(ADDR(B0_IMSK)) == 0) { | |
618 | // IRQs are disabled: must be shared interrupt | |
619 | return IRQ_NONE; | |
620 | } | |
621 | // Note: At this point, IRQs are enabled. | |
622 | if ((inpd(ISR_A) & smc->hw.is_imask) == 0) { // IRQ? | |
623 | // Adapter did not issue an IRQ: must be shared interrupt | |
624 | return IRQ_NONE; | |
625 | } | |
626 | CLI_FBI(); // Disable IRQs from our adapter. | |
627 | spin_lock(&bp->DriverLock); | |
628 | ||
629 | // Call interrupt handler in hardware module (HWM). | |
630 | fddi_isr(smc); | |
631 | ||
632 | if (smc->os.ResetRequested) { | |
633 | ResetAdapter(smc); | |
634 | smc->os.ResetRequested = FALSE; | |
635 | } | |
636 | spin_unlock(&bp->DriverLock); | |
637 | STI_FBI(); // Enable IRQs from our adapter. | |
638 | ||
639 | return IRQ_HANDLED; | |
640 | } // skfp_interrupt | |
641 | ||
642 | ||
643 | /* | |
644 | * ====================== | |
645 | * = skfp_ctl_get_stats = | |
646 | * ====================== | |
647 | * | |
648 | * Overview: | |
649 | * Get statistics for FDDI adapter | |
650 | * | |
651 | * Returns: | |
652 | * Pointer to FDDI statistics structure | |
653 | * | |
654 | * Arguments: | |
655 | * dev - pointer to device information | |
656 | * | |
657 | * Functional Description: | |
658 | * Gets current MIB objects from adapter, then | |
659 | * returns FDDI statistics structure as defined | |
660 | * in if_fddi.h. | |
661 | * | |
662 | * Note: Since the FDDI statistics structure is | |
663 | * still new and the device structure doesn't | |
664 | * have an FDDI-specific get statistics handler, | |
665 | * we'll return the FDDI statistics structure as | |
666 | * a pointer to an Ethernet statistics structure. | |
667 | * That way, at least the first part of the statistics | |
668 | * structure can be decoded properly. | |
669 | * We'll have to pay attention to this routine as the | |
670 | * device structure becomes more mature and LAN media | |
671 | * independent. | |
672 | * | |
673 | */ | |
409b2044 | 674 | static struct net_device_stats *skfp_ctl_get_stats(struct net_device *dev) |
1da177e4 LT |
675 | { |
676 | struct s_smc *bp = netdev_priv(dev); | |
677 | ||
678 | /* Fill the bp->stats structure with driver-maintained counters */ | |
679 | ||
680 | bp->os.MacStat.port_bs_flag[0] = 0x1234; | |
681 | bp->os.MacStat.port_bs_flag[1] = 0x5678; | |
682 | // goos: need to fill out fddi statistic | |
683 | #if 0 | |
684 | /* Get FDDI SMT MIB objects */ | |
685 | ||
686 | /* Fill the bp->stats structure with the SMT MIB object values */ | |
687 | ||
688 | 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)); | |
689 | bp->stats.smt_op_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_op_version_id; | |
690 | bp->stats.smt_hi_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_hi_version_id; | |
691 | bp->stats.smt_lo_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_lo_version_id; | |
692 | 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)); | |
693 | bp->stats.smt_mib_version_id = bp->cmd_rsp_virt->smt_mib_get.smt_mib_version_id; | |
694 | bp->stats.smt_mac_cts = bp->cmd_rsp_virt->smt_mib_get.smt_mac_ct; | |
695 | bp->stats.smt_non_master_cts = bp->cmd_rsp_virt->smt_mib_get.smt_non_master_ct; | |
696 | bp->stats.smt_master_cts = bp->cmd_rsp_virt->smt_mib_get.smt_master_ct; | |
697 | bp->stats.smt_available_paths = bp->cmd_rsp_virt->smt_mib_get.smt_available_paths; | |
698 | bp->stats.smt_config_capabilities = bp->cmd_rsp_virt->smt_mib_get.smt_config_capabilities; | |
699 | bp->stats.smt_config_policy = bp->cmd_rsp_virt->smt_mib_get.smt_config_policy; | |
700 | bp->stats.smt_connection_policy = bp->cmd_rsp_virt->smt_mib_get.smt_connection_policy; | |
701 | bp->stats.smt_t_notify = bp->cmd_rsp_virt->smt_mib_get.smt_t_notify; | |
702 | bp->stats.smt_stat_rpt_policy = bp->cmd_rsp_virt->smt_mib_get.smt_stat_rpt_policy; | |
703 | bp->stats.smt_trace_max_expiration = bp->cmd_rsp_virt->smt_mib_get.smt_trace_max_expiration; | |
704 | bp->stats.smt_bypass_present = bp->cmd_rsp_virt->smt_mib_get.smt_bypass_present; | |
705 | bp->stats.smt_ecm_state = bp->cmd_rsp_virt->smt_mib_get.smt_ecm_state; | |
706 | bp->stats.smt_cf_state = bp->cmd_rsp_virt->smt_mib_get.smt_cf_state; | |
707 | bp->stats.smt_remote_disconnect_flag = bp->cmd_rsp_virt->smt_mib_get.smt_remote_disconnect_flag; | |
708 | bp->stats.smt_station_status = bp->cmd_rsp_virt->smt_mib_get.smt_station_status; | |
709 | bp->stats.smt_peer_wrap_flag = bp->cmd_rsp_virt->smt_mib_get.smt_peer_wrap_flag; | |
710 | bp->stats.smt_time_stamp = bp->cmd_rsp_virt->smt_mib_get.smt_msg_time_stamp.ls; | |
711 | bp->stats.smt_transition_time_stamp = bp->cmd_rsp_virt->smt_mib_get.smt_transition_time_stamp.ls; | |
712 | bp->stats.mac_frame_status_functions = bp->cmd_rsp_virt->smt_mib_get.mac_frame_status_functions; | |
713 | bp->stats.mac_t_max_capability = bp->cmd_rsp_virt->smt_mib_get.mac_t_max_capability; | |
714 | bp->stats.mac_tvx_capability = bp->cmd_rsp_virt->smt_mib_get.mac_tvx_capability; | |
715 | bp->stats.mac_available_paths = bp->cmd_rsp_virt->smt_mib_get.mac_available_paths; | |
716 | bp->stats.mac_current_path = bp->cmd_rsp_virt->smt_mib_get.mac_current_path; | |
717 | memcpy(bp->stats.mac_upstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_upstream_nbr, FDDI_K_ALEN); | |
718 | memcpy(bp->stats.mac_downstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_downstream_nbr, FDDI_K_ALEN); | |
719 | memcpy(bp->stats.mac_old_upstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_old_upstream_nbr, FDDI_K_ALEN); | |
720 | memcpy(bp->stats.mac_old_downstream_nbr, &bp->cmd_rsp_virt->smt_mib_get.mac_old_downstream_nbr, FDDI_K_ALEN); | |
721 | bp->stats.mac_dup_address_test = bp->cmd_rsp_virt->smt_mib_get.mac_dup_address_test; | |
722 | bp->stats.mac_requested_paths = bp->cmd_rsp_virt->smt_mib_get.mac_requested_paths; | |
723 | bp->stats.mac_downstream_port_type = bp->cmd_rsp_virt->smt_mib_get.mac_downstream_port_type; | |
724 | memcpy(bp->stats.mac_smt_address, &bp->cmd_rsp_virt->smt_mib_get.mac_smt_address, FDDI_K_ALEN); | |
725 | bp->stats.mac_t_req = bp->cmd_rsp_virt->smt_mib_get.mac_t_req; | |
726 | bp->stats.mac_t_neg = bp->cmd_rsp_virt->smt_mib_get.mac_t_neg; | |
727 | bp->stats.mac_t_max = bp->cmd_rsp_virt->smt_mib_get.mac_t_max; | |
728 | bp->stats.mac_tvx_value = bp->cmd_rsp_virt->smt_mib_get.mac_tvx_value; | |
729 | bp->stats.mac_frame_error_threshold = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_threshold; | |
730 | bp->stats.mac_frame_error_ratio = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_ratio; | |
731 | bp->stats.mac_rmt_state = bp->cmd_rsp_virt->smt_mib_get.mac_rmt_state; | |
732 | bp->stats.mac_da_flag = bp->cmd_rsp_virt->smt_mib_get.mac_da_flag; | |
733 | bp->stats.mac_una_da_flag = bp->cmd_rsp_virt->smt_mib_get.mac_unda_flag; | |
734 | bp->stats.mac_frame_error_flag = bp->cmd_rsp_virt->smt_mib_get.mac_frame_error_flag; | |
735 | bp->stats.mac_ma_unitdata_available = bp->cmd_rsp_virt->smt_mib_get.mac_ma_unitdata_available; | |
736 | bp->stats.mac_hardware_present = bp->cmd_rsp_virt->smt_mib_get.mac_hardware_present; | |
737 | bp->stats.mac_ma_unitdata_enable = bp->cmd_rsp_virt->smt_mib_get.mac_ma_unitdata_enable; | |
738 | bp->stats.path_tvx_lower_bound = bp->cmd_rsp_virt->smt_mib_get.path_tvx_lower_bound; | |
739 | bp->stats.path_t_max_lower_bound = bp->cmd_rsp_virt->smt_mib_get.path_t_max_lower_bound; | |
740 | bp->stats.path_max_t_req = bp->cmd_rsp_virt->smt_mib_get.path_max_t_req; | |
741 | memcpy(bp->stats.path_configuration, &bp->cmd_rsp_virt->smt_mib_get.path_configuration, sizeof(bp->cmd_rsp_virt->smt_mib_get.path_configuration)); | |
742 | bp->stats.port_my_type[0] = bp->cmd_rsp_virt->smt_mib_get.port_my_type[0]; | |
743 | bp->stats.port_my_type[1] = bp->cmd_rsp_virt->smt_mib_get.port_my_type[1]; | |
744 | bp->stats.port_neighbor_type[0] = bp->cmd_rsp_virt->smt_mib_get.port_neighbor_type[0]; | |
745 | bp->stats.port_neighbor_type[1] = bp->cmd_rsp_virt->smt_mib_get.port_neighbor_type[1]; | |
746 | bp->stats.port_connection_policies[0] = bp->cmd_rsp_virt->smt_mib_get.port_connection_policies[0]; | |
747 | bp->stats.port_connection_policies[1] = bp->cmd_rsp_virt->smt_mib_get.port_connection_policies[1]; | |
748 | bp->stats.port_mac_indicated[0] = bp->cmd_rsp_virt->smt_mib_get.port_mac_indicated[0]; | |
749 | bp->stats.port_mac_indicated[1] = bp->cmd_rsp_virt->smt_mib_get.port_mac_indicated[1]; | |
750 | bp->stats.port_current_path[0] = bp->cmd_rsp_virt->smt_mib_get.port_current_path[0]; | |
751 | bp->stats.port_current_path[1] = bp->cmd_rsp_virt->smt_mib_get.port_current_path[1]; | |
752 | memcpy(&bp->stats.port_requested_paths[0 * 3], &bp->cmd_rsp_virt->smt_mib_get.port_requested_paths[0], 3); | |
753 | memcpy(&bp->stats.port_requested_paths[1 * 3], &bp->cmd_rsp_virt->smt_mib_get.port_requested_paths[1], 3); | |
754 | bp->stats.port_mac_placement[0] = bp->cmd_rsp_virt->smt_mib_get.port_mac_placement[0]; | |
755 | bp->stats.port_mac_placement[1] = bp->cmd_rsp_virt->smt_mib_get.port_mac_placement[1]; | |
756 | bp->stats.port_available_paths[0] = bp->cmd_rsp_virt->smt_mib_get.port_available_paths[0]; | |
757 | bp->stats.port_available_paths[1] = bp->cmd_rsp_virt->smt_mib_get.port_available_paths[1]; | |
758 | bp->stats.port_pmd_class[0] = bp->cmd_rsp_virt->smt_mib_get.port_pmd_class[0]; | |
759 | bp->stats.port_pmd_class[1] = bp->cmd_rsp_virt->smt_mib_get.port_pmd_class[1]; | |
760 | bp->stats.port_connection_capabilities[0] = bp->cmd_rsp_virt->smt_mib_get.port_connection_capabilities[0]; | |
761 | bp->stats.port_connection_capabilities[1] = bp->cmd_rsp_virt->smt_mib_get.port_connection_capabilities[1]; | |
762 | bp->stats.port_bs_flag[0] = bp->cmd_rsp_virt->smt_mib_get.port_bs_flag[0]; | |
763 | bp->stats.port_bs_flag[1] = bp->cmd_rsp_virt->smt_mib_get.port_bs_flag[1]; | |
764 | bp->stats.port_ler_estimate[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_estimate[0]; | |
765 | bp->stats.port_ler_estimate[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_estimate[1]; | |
766 | bp->stats.port_ler_cutoff[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_cutoff[0]; | |
767 | bp->stats.port_ler_cutoff[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_cutoff[1]; | |
768 | bp->stats.port_ler_alarm[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_alarm[0]; | |
769 | bp->stats.port_ler_alarm[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_alarm[1]; | |
770 | bp->stats.port_connect_state[0] = bp->cmd_rsp_virt->smt_mib_get.port_connect_state[0]; | |
771 | bp->stats.port_connect_state[1] = bp->cmd_rsp_virt->smt_mib_get.port_connect_state[1]; | |
772 | bp->stats.port_pcm_state[0] = bp->cmd_rsp_virt->smt_mib_get.port_pcm_state[0]; | |
773 | bp->stats.port_pcm_state[1] = bp->cmd_rsp_virt->smt_mib_get.port_pcm_state[1]; | |
774 | bp->stats.port_pc_withhold[0] = bp->cmd_rsp_virt->smt_mib_get.port_pc_withhold[0]; | |
775 | bp->stats.port_pc_withhold[1] = bp->cmd_rsp_virt->smt_mib_get.port_pc_withhold[1]; | |
776 | bp->stats.port_ler_flag[0] = bp->cmd_rsp_virt->smt_mib_get.port_ler_flag[0]; | |
777 | bp->stats.port_ler_flag[1] = bp->cmd_rsp_virt->smt_mib_get.port_ler_flag[1]; | |
778 | bp->stats.port_hardware_present[0] = bp->cmd_rsp_virt->smt_mib_get.port_hardware_present[0]; | |
779 | bp->stats.port_hardware_present[1] = bp->cmd_rsp_virt->smt_mib_get.port_hardware_present[1]; | |
780 | ||
781 | ||
782 | /* Fill the bp->stats structure with the FDDI counter values */ | |
783 | ||
784 | bp->stats.mac_frame_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.frame_cnt.ls; | |
785 | bp->stats.mac_copied_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.copied_cnt.ls; | |
786 | bp->stats.mac_transmit_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.transmit_cnt.ls; | |
787 | bp->stats.mac_error_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.error_cnt.ls; | |
788 | bp->stats.mac_lost_cts = bp->cmd_rsp_virt->cntrs_get.cntrs.lost_cnt.ls; | |
789 | bp->stats.port_lct_fail_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.lct_rejects[0].ls; | |
790 | bp->stats.port_lct_fail_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.lct_rejects[1].ls; | |
791 | bp->stats.port_lem_reject_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.lem_rejects[0].ls; | |
792 | bp->stats.port_lem_reject_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.lem_rejects[1].ls; | |
793 | bp->stats.port_lem_cts[0] = bp->cmd_rsp_virt->cntrs_get.cntrs.link_errors[0].ls; | |
794 | bp->stats.port_lem_cts[1] = bp->cmd_rsp_virt->cntrs_get.cntrs.link_errors[1].ls; | |
795 | ||
796 | #endif | |
807540ba | 797 | return (struct net_device_stats *)&bp->os.MacStat; |
1da177e4 LT |
798 | } // ctl_get_stat |
799 | ||
800 | ||
801 | /* | |
802 | * ============================== | |
803 | * = skfp_ctl_set_multicast_list = | |
804 | * ============================== | |
805 | * | |
806 | * Overview: | |
807 | * Enable/Disable LLC frame promiscuous mode reception | |
808 | * on the adapter and/or update multicast address table. | |
809 | * | |
810 | * Returns: | |
811 | * None | |
812 | * | |
813 | * Arguments: | |
814 | * dev - pointer to device information | |
815 | * | |
816 | * Functional Description: | |
817 | * This function acquires the driver lock and only calls | |
818 | * skfp_ctl_set_multicast_list_wo_lock then. | |
819 | * This routine follows a fairly simple algorithm for setting the | |
820 | * adapter filters and CAM: | |
821 | * | |
822 | * if IFF_PROMISC flag is set | |
823 | * enable promiscuous mode | |
824 | * else | |
825 | * disable promiscuous mode | |
826 | * if number of multicast addresses <= max. multicast number | |
827 | * add mc addresses to adapter table | |
828 | * else | |
829 | * enable promiscuous mode | |
830 | * update adapter filters | |
831 | * | |
832 | * Assumptions: | |
833 | * Multicast addresses are presented in canonical (LSB) format. | |
834 | * | |
835 | * Side Effects: | |
836 | * On-board adapter filters are updated. | |
837 | */ | |
838 | static void skfp_ctl_set_multicast_list(struct net_device *dev) | |
839 | { | |
840 | struct s_smc *smc = netdev_priv(dev); | |
841 | skfddi_priv *bp = &smc->os; | |
842 | unsigned long Flags; | |
843 | ||
844 | spin_lock_irqsave(&bp->DriverLock, Flags); | |
845 | skfp_ctl_set_multicast_list_wo_lock(dev); | |
846 | spin_unlock_irqrestore(&bp->DriverLock, Flags); | |
1da177e4 LT |
847 | } // skfp_ctl_set_multicast_list |
848 | ||
849 | ||
850 | ||
851 | static void skfp_ctl_set_multicast_list_wo_lock(struct net_device *dev) | |
852 | { | |
853 | struct s_smc *smc = netdev_priv(dev); | |
22bedad3 | 854 | struct netdev_hw_addr *ha; |
1da177e4 LT |
855 | |
856 | /* Enable promiscuous mode, if necessary */ | |
857 | if (dev->flags & IFF_PROMISC) { | |
858 | mac_drv_rx_mode(smc, RX_ENABLE_PROMISC); | |
d81e27cf | 859 | pr_debug("PROMISCUOUS MODE ENABLED\n"); |
1da177e4 LT |
860 | } |
861 | /* Else, update multicast address table */ | |
862 | else { | |
863 | mac_drv_rx_mode(smc, RX_DISABLE_PROMISC); | |
d81e27cf | 864 | pr_debug("PROMISCUOUS MODE DISABLED\n"); |
1da177e4 LT |
865 | |
866 | // Reset all MC addresses | |
867 | mac_clear_multicast(smc); | |
868 | mac_drv_rx_mode(smc, RX_DISABLE_ALLMULTI); | |
869 | ||
870 | if (dev->flags & IFF_ALLMULTI) { | |
871 | mac_drv_rx_mode(smc, RX_ENABLE_ALLMULTI); | |
d81e27cf | 872 | pr_debug("ENABLE ALL MC ADDRESSES\n"); |
4cd24eaf JP |
873 | } else if (!netdev_mc_empty(dev)) { |
874 | if (netdev_mc_count(dev) <= FPMAX_MULTICAST) { | |
1da177e4 LT |
875 | /* use exact filtering */ |
876 | ||
877 | // point to first multicast addr | |
22bedad3 JP |
878 | netdev_for_each_mc_addr(ha, dev) { |
879 | mac_add_multicast(smc, | |
880 | (struct fddi_addr *)ha->addr, | |
881 | 1); | |
1da177e4 | 882 | |
d81e27cf JP |
883 | pr_debug("ENABLE MC ADDRESS: %pMF\n", |
884 | ha->addr); | |
5508590c | 885 | } |
1da177e4 LT |
886 | |
887 | } else { // more MC addresses than HW supports | |
888 | ||
889 | mac_drv_rx_mode(smc, RX_ENABLE_ALLMULTI); | |
d81e27cf | 890 | pr_debug("ENABLE ALL MC ADDRESSES\n"); |
1da177e4 LT |
891 | } |
892 | } else { // no MC addresses | |
893 | ||
d81e27cf | 894 | pr_debug("DISABLE ALL MC ADDRESSES\n"); |
1da177e4 LT |
895 | } |
896 | ||
897 | /* Update adapter filters */ | |
898 | mac_update_multicast(smc); | |
899 | } | |
1da177e4 LT |
900 | } // skfp_ctl_set_multicast_list_wo_lock |
901 | ||
902 | ||
903 | /* | |
904 | * =========================== | |
905 | * = skfp_ctl_set_mac_address = | |
906 | * =========================== | |
907 | * | |
908 | * Overview: | |
909 | * set new mac address on adapter and update dev_addr field in device table. | |
910 | * | |
911 | * Returns: | |
912 | * None | |
913 | * | |
914 | * Arguments: | |
915 | * dev - pointer to device information | |
916 | * addr - pointer to sockaddr structure containing unicast address to set | |
917 | * | |
918 | * Assumptions: | |
919 | * The address pointed to by addr->sa_data is a valid unicast | |
920 | * address and is presented in canonical (LSB) format. | |
921 | */ | |
922 | static int skfp_ctl_set_mac_address(struct net_device *dev, void *addr) | |
923 | { | |
924 | struct s_smc *smc = netdev_priv(dev); | |
925 | struct sockaddr *p_sockaddr = (struct sockaddr *) addr; | |
926 | skfddi_priv *bp = &smc->os; | |
927 | unsigned long Flags; | |
928 | ||
929 | ||
930 | memcpy(dev->dev_addr, p_sockaddr->sa_data, FDDI_K_ALEN); | |
931 | spin_lock_irqsave(&bp->DriverLock, Flags); | |
932 | ResetAdapter(smc); | |
933 | spin_unlock_irqrestore(&bp->DriverLock, Flags); | |
934 | ||
807540ba | 935 | return 0; /* always return zero */ |
1da177e4 LT |
936 | } // skfp_ctl_set_mac_address |
937 | ||
938 | ||
939 | /* | |
940 | * ============== | |
941 | * = skfp_ioctl = | |
942 | * ============== | |
943 | * | |
944 | * Overview: | |
945 | * | |
946 | * Perform IOCTL call functions here. Some are privileged operations and the | |
947 | * effective uid is checked in those cases. | |
948 | * | |
949 | * Returns: | |
950 | * status value | |
951 | * 0 - success | |
952 | * other - failure | |
953 | * | |
954 | * Arguments: | |
955 | * dev - pointer to device information | |
956 | * rq - pointer to ioctl request structure | |
957 | * cmd - ? | |
958 | * | |
959 | */ | |
960 | ||
961 | ||
962 | static int skfp_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
963 | { | |
964 | struct s_smc *smc = netdev_priv(dev); | |
965 | skfddi_priv *lp = &smc->os; | |
966 | struct s_skfp_ioctl ioc; | |
967 | int status = 0; | |
968 | ||
969 | if (copy_from_user(&ioc, rq->ifr_data, sizeof(struct s_skfp_ioctl))) | |
970 | return -EFAULT; | |
971 | ||
972 | switch (ioc.cmd) { | |
973 | case SKFP_GET_STATS: /* Get the driver statistics */ | |
974 | ioc.len = sizeof(lp->MacStat); | |
975 | status = copy_to_user(ioc.data, skfp_ctl_get_stats(dev), ioc.len) | |
976 | ? -EFAULT : 0; | |
977 | break; | |
978 | case SKFP_CLR_STATS: /* Zero out the driver statistics */ | |
979 | if (!capable(CAP_NET_ADMIN)) { | |
1da177e4 | 980 | status = -EPERM; |
c25b9abb RK |
981 | } else { |
982 | memset(&lp->MacStat, 0, sizeof(lp->MacStat)); | |
1da177e4 LT |
983 | } |
984 | break; | |
985 | default: | |
af901ca1 | 986 | printk("ioctl for %s: unknown cmd: %04x\n", dev->name, ioc.cmd); |
1da177e4 LT |
987 | status = -EOPNOTSUPP; |
988 | ||
989 | } // switch | |
990 | ||
991 | return status; | |
992 | } // skfp_ioctl | |
993 | ||
994 | ||
995 | /* | |
996 | * ===================== | |
997 | * = skfp_send_pkt = | |
998 | * ===================== | |
999 | * | |
1000 | * Overview: | |
1001 | * Queues a packet for transmission and try to transmit it. | |
1002 | * | |
1003 | * Returns: | |
1004 | * Condition code | |
1005 | * | |
1006 | * Arguments: | |
1007 | * skb - pointer to sk_buff to queue for transmission | |
1008 | * dev - pointer to device information | |
1009 | * | |
1010 | * Functional Description: | |
1011 | * Here we assume that an incoming skb transmit request | |
1012 | * is contained in a single physically contiguous buffer | |
1013 | * in which the virtual address of the start of packet | |
1014 | * (skb->data) can be converted to a physical address | |
1015 | * by using pci_map_single(). | |
1016 | * | |
1017 | * We have an internal queue for packets we can not send | |
1018 | * immediately. Packets in this queue can be given to the | |
1019 | * adapter if transmit buffers are freed. | |
1020 | * | |
1021 | * We can't free the skb until after it's been DMA'd | |
1022 | * out by the adapter, so we'll keep it in the driver and | |
1023 | * return it in mac_drv_tx_complete. | |
1024 | * | |
1025 | * Return Codes: | |
1026 | * 0 - driver has queued and/or sent packet | |
1027 | * 1 - caller should requeue the sk_buff for later transmission | |
1028 | * | |
1029 | * Assumptions: | |
1030 | * The entire packet is stored in one physically | |
1031 | * contiguous buffer which is not cached and whose | |
1032 | * 32-bit physical address can be determined. | |
1033 | * | |
1034 | * It's vital that this routine is NOT reentered for the | |
1035 | * same board and that the OS is not in another section of | |
1036 | * code (eg. skfp_interrupt) for the same board on a | |
1037 | * different thread. | |
1038 | * | |
1039 | * Side Effects: | |
1040 | * None | |
1041 | */ | |
61357325 SH |
1042 | static netdev_tx_t skfp_send_pkt(struct sk_buff *skb, |
1043 | struct net_device *dev) | |
1da177e4 LT |
1044 | { |
1045 | struct s_smc *smc = netdev_priv(dev); | |
1046 | skfddi_priv *bp = &smc->os; | |
1047 | ||
d81e27cf | 1048 | pr_debug("skfp_send_pkt\n"); |
1da177e4 LT |
1049 | |
1050 | /* | |
1051 | * Verify that incoming transmit request is OK | |
1052 | * | |
1053 | * Note: The packet size check is consistent with other | |
1054 | * Linux device drivers, although the correct packet | |
1055 | * size should be verified before calling the | |
1056 | * transmit routine. | |
1057 | */ | |
1058 | ||
1059 | if (!(skb->len >= FDDI_K_LLC_ZLEN && skb->len <= FDDI_K_LLC_LEN)) { | |
1060 | bp->MacStat.gen.tx_errors++; /* bump error counter */ | |
1061 | // dequeue packets from xmt queue and send them | |
1062 | netif_start_queue(dev); | |
1063 | dev_kfree_skb(skb); | |
ec634fe3 | 1064 | return NETDEV_TX_OK; /* return "success" */ |
1da177e4 LT |
1065 | } |
1066 | if (bp->QueueSkb == 0) { // return with tbusy set: queue full | |
1067 | ||
1068 | netif_stop_queue(dev); | |
5b548140 | 1069 | return NETDEV_TX_BUSY; |
1da177e4 LT |
1070 | } |
1071 | bp->QueueSkb--; | |
1072 | skb_queue_tail(&bp->SendSkbQueue, skb); | |
1073 | send_queued_packets(netdev_priv(dev)); | |
1074 | if (bp->QueueSkb == 0) { | |
1075 | netif_stop_queue(dev); | |
1076 | } | |
6ed10654 | 1077 | return NETDEV_TX_OK; |
1da177e4 LT |
1078 | |
1079 | } // skfp_send_pkt | |
1080 | ||
1081 | ||
1082 | /* | |
1083 | * ======================= | |
1084 | * = send_queued_packets = | |
1085 | * ======================= | |
1086 | * | |
1087 | * Overview: | |
1088 | * Send packets from the driver queue as long as there are some and | |
1089 | * transmit resources are available. | |
1090 | * | |
1091 | * Returns: | |
1092 | * None | |
1093 | * | |
1094 | * Arguments: | |
1095 | * smc - pointer to smc (adapter) structure | |
1096 | * | |
1097 | * Functional Description: | |
1098 | * Take a packet from queue if there is any. If not, then we are done. | |
1099 | * Check if there are resources to send the packet. If not, requeue it | |
1100 | * and exit. | |
1101 | * Set packet descriptor flags and give packet to adapter. | |
1102 | * Check if any send resources can be freed (we do not use the | |
1103 | * transmit complete interrupt). | |
1104 | */ | |
1105 | static void send_queued_packets(struct s_smc *smc) | |
1106 | { | |
1107 | skfddi_priv *bp = &smc->os; | |
1108 | struct sk_buff *skb; | |
1109 | unsigned char fc; | |
1110 | int queue; | |
1111 | struct s_smt_fp_txd *txd; // Current TxD. | |
1112 | dma_addr_t dma_address; | |
1113 | unsigned long Flags; | |
1114 | ||
1115 | int frame_status; // HWM tx frame status. | |
1116 | ||
d81e27cf | 1117 | pr_debug("send queued packets\n"); |
1da177e4 LT |
1118 | for (;;) { |
1119 | // send first buffer from queue | |
1120 | skb = skb_dequeue(&bp->SendSkbQueue); | |
1121 | ||
1122 | if (!skb) { | |
d81e27cf | 1123 | pr_debug("queue empty\n"); |
1da177e4 LT |
1124 | return; |
1125 | } // queue empty ! | |
1126 | ||
1127 | spin_lock_irqsave(&bp->DriverLock, Flags); | |
1128 | fc = skb->data[0]; | |
1129 | queue = (fc & FC_SYNC_BIT) ? QUEUE_S : QUEUE_A0; | |
1130 | #ifdef ESS | |
1131 | // Check if the frame may/must be sent as a synchronous frame. | |
1132 | ||
1133 | if ((fc & ~(FC_SYNC_BIT | FC_LLC_PRIOR)) == FC_ASYNC_LLC) { | |
1134 | // It's an LLC frame. | |
1135 | if (!smc->ess.sync_bw_available) | |
1136 | fc &= ~FC_SYNC_BIT; // No bandwidth available. | |
1137 | ||
1138 | else { // Bandwidth is available. | |
1139 | ||
1140 | if (smc->mib.fddiESSSynchTxMode) { | |
1141 | // Send as sync. frame. | |
1142 | fc |= FC_SYNC_BIT; | |
1143 | } | |
1144 | } | |
1145 | } | |
1146 | #endif // ESS | |
1147 | frame_status = hwm_tx_init(smc, fc, 1, skb->len, queue); | |
1148 | ||
1149 | if ((frame_status & (LOC_TX | LAN_TX)) == 0) { | |
1150 | // Unable to send the frame. | |
1151 | ||
1152 | if ((frame_status & RING_DOWN) != 0) { | |
1153 | // Ring is down. | |
ebc06eeb | 1154 | pr_debug("Tx attempt while ring down.\n"); |
1da177e4 | 1155 | } else if ((frame_status & OUT_OF_TXD) != 0) { |
ebc06eeb | 1156 | pr_debug("%s: out of TXDs.\n", bp->dev->name); |
1da177e4 | 1157 | } else { |
ebc06eeb | 1158 | pr_debug("%s: out of transmit resources", |
1da177e4 LT |
1159 | bp->dev->name); |
1160 | } | |
1161 | ||
1162 | // Note: We will retry the operation as soon as | |
1163 | // transmit resources become available. | |
1164 | skb_queue_head(&bp->SendSkbQueue, skb); | |
1165 | spin_unlock_irqrestore(&bp->DriverLock, Flags); | |
1166 | return; // Packet has been queued. | |
1167 | ||
1168 | } // if (unable to send frame) | |
1169 | ||
1170 | bp->QueueSkb++; // one packet less in local queue | |
1171 | ||
1172 | // source address in packet ? | |
1173 | CheckSourceAddress(skb->data, smc->hw.fddi_canon_addr.a); | |
1174 | ||
1175 | txd = (struct s_smt_fp_txd *) HWM_GET_CURR_TXD(smc, queue); | |
1176 | ||
1177 | dma_address = pci_map_single(&bp->pdev, skb->data, | |
1178 | skb->len, PCI_DMA_TODEVICE); | |
1179 | if (frame_status & LAN_TX) { | |
1180 | txd->txd_os.skb = skb; // save skb | |
1181 | txd->txd_os.dma_addr = dma_address; // save dma mapping | |
1182 | } | |
1183 | hwm_tx_frag(smc, skb->data, dma_address, skb->len, | |
1184 | frame_status | FIRST_FRAG | LAST_FRAG | EN_IRQ_EOF); | |
1185 | ||
1186 | if (!(frame_status & LAN_TX)) { // local only frame | |
1187 | pci_unmap_single(&bp->pdev, dma_address, | |
1188 | skb->len, PCI_DMA_TODEVICE); | |
1189 | dev_kfree_skb_irq(skb); | |
1190 | } | |
1191 | spin_unlock_irqrestore(&bp->DriverLock, Flags); | |
1192 | } // for | |
1193 | ||
1194 | return; // never reached | |
1195 | ||
1196 | } // send_queued_packets | |
1197 | ||
1198 | ||
1199 | /************************ | |
1200 | * | |
1201 | * CheckSourceAddress | |
1202 | * | |
1203 | * Verify if the source address is set. Insert it if necessary. | |
1204 | * | |
1205 | ************************/ | |
409b2044 | 1206 | static void CheckSourceAddress(unsigned char *frame, unsigned char *hw_addr) |
1da177e4 LT |
1207 | { |
1208 | unsigned char SRBit; | |
1209 | ||
1210 | if ((((unsigned long) frame[1 + 6]) & ~0x01) != 0) // source routing bit | |
1211 | ||
1212 | return; | |
1213 | if ((unsigned short) frame[1 + 10] != 0) | |
1214 | return; | |
1215 | SRBit = frame[1 + 6] & 0x01; | |
1216 | memcpy(&frame[1 + 6], hw_addr, 6); | |
1217 | frame[8] |= SRBit; | |
1218 | } // CheckSourceAddress | |
1219 | ||
1220 | ||
1221 | /************************ | |
1222 | * | |
1223 | * ResetAdapter | |
1224 | * | |
1225 | * Reset the adapter and bring it back to operational mode. | |
1226 | * Args | |
1227 | * smc - A pointer to the SMT context struct. | |
1228 | * Out | |
1229 | * Nothing. | |
1230 | * | |
1231 | ************************/ | |
1232 | static void ResetAdapter(struct s_smc *smc) | |
1233 | { | |
1234 | ||
d81e27cf | 1235 | pr_debug("[fddi: ResetAdapter]\n"); |
1da177e4 LT |
1236 | |
1237 | // Stop the adapter. | |
1238 | ||
1239 | card_stop(smc); // Stop all activity. | |
1240 | ||
1241 | // Clear the transmit and receive descriptor queues. | |
1242 | mac_drv_clear_tx_queue(smc); | |
1243 | mac_drv_clear_rx_queue(smc); | |
1244 | ||
1245 | // Restart the adapter. | |
1246 | ||
1247 | smt_reset_defaults(smc, 1); // Initialize the SMT module. | |
1248 | ||
1249 | init_smt(smc, (smc->os.dev)->dev_addr); // Initialize the hardware. | |
1250 | ||
1251 | smt_online(smc, 1); // Insert into the ring again. | |
1252 | STI_FBI(); | |
1253 | ||
1254 | // Restore original receive mode (multicasts, promiscuous, etc.). | |
1255 | skfp_ctl_set_multicast_list_wo_lock(smc->os.dev); | |
1256 | } // ResetAdapter | |
1257 | ||
1258 | ||
1259 | //--------------- functions called by hardware module ---------------- | |
1260 | ||
1261 | /************************ | |
1262 | * | |
1263 | * llc_restart_tx | |
1264 | * | |
1265 | * The hardware driver calls this routine when the transmit complete | |
1266 | * interrupt bits (end of frame) for the synchronous or asynchronous | |
1267 | * queue is set. | |
1268 | * | |
1269 | * NOTE The hardware driver calls this function also if no packets are queued. | |
1270 | * The routine must be able to handle this case. | |
1271 | * Args | |
1272 | * smc - A pointer to the SMT context struct. | |
1273 | * Out | |
1274 | * Nothing. | |
1275 | * | |
1276 | ************************/ | |
1277 | void llc_restart_tx(struct s_smc *smc) | |
1278 | { | |
1279 | skfddi_priv *bp = &smc->os; | |
1280 | ||
d81e27cf | 1281 | pr_debug("[llc_restart_tx]\n"); |
1da177e4 LT |
1282 | |
1283 | // Try to send queued packets | |
1284 | spin_unlock(&bp->DriverLock); | |
1285 | send_queued_packets(smc); | |
1286 | spin_lock(&bp->DriverLock); | |
1287 | netif_start_queue(bp->dev);// system may send again if it was blocked | |
1288 | ||
1289 | } // llc_restart_tx | |
1290 | ||
1291 | ||
1292 | /************************ | |
1293 | * | |
1294 | * mac_drv_get_space | |
1295 | * | |
1296 | * The hardware module calls this function to allocate the memory | |
1297 | * for the SMT MBufs if the define MB_OUTSIDE_SMC is specified. | |
1298 | * Args | |
1299 | * smc - A pointer to the SMT context struct. | |
1300 | * | |
1301 | * size - Size of memory in bytes to allocate. | |
1302 | * Out | |
1303 | * != 0 A pointer to the virtual address of the allocated memory. | |
1304 | * == 0 Allocation error. | |
1305 | * | |
1306 | ************************/ | |
1307 | void *mac_drv_get_space(struct s_smc *smc, unsigned int size) | |
1308 | { | |
1309 | void *virt; | |
1310 | ||
d81e27cf | 1311 | pr_debug("mac_drv_get_space (%d bytes), ", size); |
1da177e4 LT |
1312 | virt = (void *) (smc->os.SharedMemAddr + smc->os.SharedMemHeap); |
1313 | ||
1314 | if ((smc->os.SharedMemHeap + size) > smc->os.SharedMemSize) { | |
1315 | printk("Unexpected SMT memory size requested: %d\n", size); | |
807540ba | 1316 | return NULL; |
1da177e4 LT |
1317 | } |
1318 | smc->os.SharedMemHeap += size; // Move heap pointer. | |
1319 | ||
d81e27cf JP |
1320 | pr_debug("mac_drv_get_space end\n"); |
1321 | pr_debug("virt addr: %lx\n", (ulong) virt); | |
1322 | pr_debug("bus addr: %lx\n", (ulong) | |
1da177e4 LT |
1323 | (smc->os.SharedMemDMA + |
1324 | ((char *) virt - (char *)smc->os.SharedMemAddr))); | |
807540ba | 1325 | return virt; |
1da177e4 LT |
1326 | } // mac_drv_get_space |
1327 | ||
1328 | ||
1329 | /************************ | |
1330 | * | |
1331 | * mac_drv_get_desc_mem | |
1332 | * | |
1333 | * This function is called by the hardware dependent module. | |
1334 | * It allocates the memory for the RxD and TxD descriptors. | |
1335 | * | |
1336 | * This memory must be non-cached, non-movable and non-swappable. | |
1337 | * This memory should start at a physical page boundary. | |
1338 | * Args | |
1339 | * smc - A pointer to the SMT context struct. | |
1340 | * | |
1341 | * size - Size of memory in bytes to allocate. | |
1342 | * Out | |
1343 | * != 0 A pointer to the virtual address of the allocated memory. | |
1344 | * == 0 Allocation error. | |
1345 | * | |
1346 | ************************/ | |
1347 | void *mac_drv_get_desc_mem(struct s_smc *smc, unsigned int size) | |
1348 | { | |
1349 | ||
1350 | char *virt; | |
1351 | ||
d81e27cf | 1352 | pr_debug("mac_drv_get_desc_mem\n"); |
1da177e4 LT |
1353 | |
1354 | // Descriptor memory must be aligned on 16-byte boundary. | |
1355 | ||
1356 | virt = mac_drv_get_space(smc, size); | |
1357 | ||
1358 | size = (u_int) (16 - (((unsigned long) virt) & 15UL)); | |
1359 | size = size % 16; | |
1360 | ||
ebc06eeb AB |
1361 | pr_debug("Allocate %u bytes alignment gap ", size); |
1362 | pr_debug("for descriptor memory.\n"); | |
1da177e4 LT |
1363 | |
1364 | if (!mac_drv_get_space(smc, size)) { | |
1365 | printk("fddi: Unable to align descriptor memory.\n"); | |
807540ba | 1366 | return NULL; |
1da177e4 | 1367 | } |
807540ba | 1368 | return virt + size; |
1da177e4 LT |
1369 | } // mac_drv_get_desc_mem |
1370 | ||
1371 | ||
1372 | /************************ | |
1373 | * | |
1374 | * mac_drv_virt2phys | |
1375 | * | |
1376 | * Get the physical address of a given virtual address. | |
1377 | * Args | |
1378 | * smc - A pointer to the SMT context struct. | |
1379 | * | |
1380 | * virt - A (virtual) pointer into our 'shared' memory area. | |
1381 | * Out | |
1382 | * Physical address of the given virtual address. | |
1383 | * | |
1384 | ************************/ | |
1385 | unsigned long mac_drv_virt2phys(struct s_smc *smc, void *virt) | |
1386 | { | |
807540ba ED |
1387 | return smc->os.SharedMemDMA + |
1388 | ((char *) virt - (char *)smc->os.SharedMemAddr); | |
1da177e4 LT |
1389 | } // mac_drv_virt2phys |
1390 | ||
1391 | ||
1392 | /************************ | |
1393 | * | |
1394 | * dma_master | |
1395 | * | |
1396 | * The HWM calls this function, when the driver leads through a DMA | |
1397 | * transfer. If the OS-specific module must prepare the system hardware | |
1398 | * for the DMA transfer, it should do it in this function. | |
1399 | * | |
1400 | * The hardware module calls this dma_master if it wants to send an SMT | |
1401 | * frame. This means that the virt address passed in here is part of | |
1402 | * the 'shared' memory area. | |
1403 | * Args | |
1404 | * smc - A pointer to the SMT context struct. | |
1405 | * | |
1406 | * virt - The virtual address of the data. | |
1407 | * | |
1408 | * len - The length in bytes of the data. | |
1409 | * | |
1410 | * flag - Indicates the transmit direction and the buffer type: | |
1411 | * DMA_RD (0x01) system RAM ==> adapter buffer memory | |
1412 | * DMA_WR (0x02) adapter buffer memory ==> system RAM | |
1413 | * SMT_BUF (0x80) SMT buffer | |
1414 | * | |
1415 | * >> NOTE: SMT_BUF and DMA_RD are always set for PCI. << | |
1416 | * Out | |
1417 | * Returns the pyhsical address for the DMA transfer. | |
1418 | * | |
1419 | ************************/ | |
1420 | u_long dma_master(struct s_smc * smc, void *virt, int len, int flag) | |
1421 | { | |
807540ba ED |
1422 | return smc->os.SharedMemDMA + |
1423 | ((char *) virt - (char *)smc->os.SharedMemAddr); | |
1da177e4 LT |
1424 | } // dma_master |
1425 | ||
1426 | ||
1427 | /************************ | |
1428 | * | |
1429 | * dma_complete | |
1430 | * | |
1431 | * The hardware module calls this routine when it has completed a DMA | |
1432 | * transfer. If the operating system dependent module has set up the DMA | |
1433 | * channel via dma_master() (e.g. Windows NT or AIX) it should clean up | |
1434 | * the DMA channel. | |
1435 | * Args | |
1436 | * smc - A pointer to the SMT context struct. | |
1437 | * | |
1438 | * descr - A pointer to a TxD or RxD, respectively. | |
1439 | * | |
1440 | * flag - Indicates the DMA transfer direction / SMT buffer: | |
1441 | * DMA_RD (0x01) system RAM ==> adapter buffer memory | |
1442 | * DMA_WR (0x02) adapter buffer memory ==> system RAM | |
1443 | * SMT_BUF (0x80) SMT buffer (managed by HWM) | |
1444 | * Out | |
1445 | * Nothing. | |
1446 | * | |
1447 | ************************/ | |
1448 | void dma_complete(struct s_smc *smc, volatile union s_fp_descr *descr, int flag) | |
1449 | { | |
1450 | /* For TX buffers, there are two cases. If it is an SMT transmit | |
1451 | * buffer, there is nothing to do since we use consistent memory | |
1452 | * for the 'shared' memory area. The other case is for normal | |
1453 | * transmit packets given to us by the networking stack, and in | |
1454 | * that case we cleanup the PCI DMA mapping in mac_drv_tx_complete | |
1455 | * below. | |
1456 | * | |
1457 | * For RX buffers, we have to unmap dynamic PCI DMA mappings here | |
1458 | * because the hardware module is about to potentially look at | |
1459 | * the contents of the buffer. If we did not call the PCI DMA | |
1460 | * unmap first, the hardware module could read inconsistent data. | |
1461 | */ | |
1462 | if (flag & DMA_WR) { | |
1463 | skfddi_priv *bp = &smc->os; | |
1464 | volatile struct s_smt_fp_rxd *r = &descr->r; | |
1465 | ||
1466 | /* If SKB is NULL, we used the local buffer. */ | |
1467 | if (r->rxd_os.skb && r->rxd_os.dma_addr) { | |
1468 | int MaxFrameSize = bp->MaxFrameSize; | |
1469 | ||
1470 | pci_unmap_single(&bp->pdev, r->rxd_os.dma_addr, | |
1471 | MaxFrameSize, PCI_DMA_FROMDEVICE); | |
1472 | r->rxd_os.dma_addr = 0; | |
1473 | } | |
1474 | } | |
1475 | } // dma_complete | |
1476 | ||
1477 | ||
1478 | /************************ | |
1479 | * | |
1480 | * mac_drv_tx_complete | |
1481 | * | |
1482 | * Transmit of a packet is complete. Release the tx staging buffer. | |
1483 | * | |
1484 | * Args | |
1485 | * smc - A pointer to the SMT context struct. | |
1486 | * | |
1487 | * txd - A pointer to the last TxD which is used by the frame. | |
1488 | * Out | |
1489 | * Returns nothing. | |
1490 | * | |
1491 | ************************/ | |
1492 | void mac_drv_tx_complete(struct s_smc *smc, volatile struct s_smt_fp_txd *txd) | |
1493 | { | |
1494 | struct sk_buff *skb; | |
1495 | ||
d81e27cf | 1496 | pr_debug("entering mac_drv_tx_complete\n"); |
1da177e4 LT |
1497 | // Check if this TxD points to a skb |
1498 | ||
1499 | if (!(skb = txd->txd_os.skb)) { | |
ebc06eeb | 1500 | pr_debug("TXD with no skb assigned.\n"); |
1da177e4 LT |
1501 | return; |
1502 | } | |
1503 | txd->txd_os.skb = NULL; | |
1504 | ||
1505 | // release the DMA mapping | |
1506 | pci_unmap_single(&smc->os.pdev, txd->txd_os.dma_addr, | |
1507 | skb->len, PCI_DMA_TODEVICE); | |
1508 | txd->txd_os.dma_addr = 0; | |
1509 | ||
1510 | smc->os.MacStat.gen.tx_packets++; // Count transmitted packets. | |
1511 | smc->os.MacStat.gen.tx_bytes+=skb->len; // Count bytes | |
1512 | ||
1513 | // free the skb | |
1514 | dev_kfree_skb_irq(skb); | |
1515 | ||
d81e27cf | 1516 | pr_debug("leaving mac_drv_tx_complete\n"); |
1da177e4 LT |
1517 | } // mac_drv_tx_complete |
1518 | ||
1519 | ||
1520 | /************************ | |
1521 | * | |
1522 | * dump packets to logfile | |
1523 | * | |
1524 | ************************/ | |
1525 | #ifdef DUMPPACKETS | |
1526 | void dump_data(unsigned char *Data, int length) | |
1527 | { | |
1528 | int i, j; | |
1529 | unsigned char s[255], sh[10]; | |
1530 | if (length > 64) { | |
1531 | length = 64; | |
1532 | } | |
1533 | printk(KERN_INFO "---Packet start---\n"); | |
1534 | for (i = 0, j = 0; i < length / 8; i++, j += 8) | |
1535 | printk(KERN_INFO "%02x %02x %02x %02x %02x %02x %02x %02x\n", | |
1536 | Data[j + 0], Data[j + 1], Data[j + 2], Data[j + 3], | |
1537 | Data[j + 4], Data[j + 5], Data[j + 6], Data[j + 7]); | |
1538 | strcpy(s, ""); | |
1539 | for (i = 0; i < length % 8; i++) { | |
1540 | sprintf(sh, "%02x ", Data[j + i]); | |
1541 | strcat(s, sh); | |
1542 | } | |
1543 | printk(KERN_INFO "%s\n", s); | |
1544 | printk(KERN_INFO "------------------\n"); | |
1545 | } // dump_data | |
1546 | #else | |
1547 | #define dump_data(data,len) | |
1548 | #endif // DUMPPACKETS | |
1549 | ||
1550 | /************************ | |
1551 | * | |
1552 | * mac_drv_rx_complete | |
1553 | * | |
1554 | * The hardware module calls this function if an LLC frame is received | |
1555 | * in a receive buffer. Also the SMT, NSA, and directed beacon frames | |
1556 | * from the network will be passed to the LLC layer by this function | |
1557 | * if passing is enabled. | |
1558 | * | |
1559 | * mac_drv_rx_complete forwards the frame to the LLC layer if it should | |
1560 | * be received. It also fills the RxD ring with new receive buffers if | |
1561 | * some can be queued. | |
1562 | * Args | |
1563 | * smc - A pointer to the SMT context struct. | |
1564 | * | |
1565 | * rxd - A pointer to the first RxD which is used by the receive frame. | |
1566 | * | |
1567 | * frag_count - Count of RxDs used by the received frame. | |
1568 | * | |
1569 | * len - Frame length. | |
1570 | * Out | |
1571 | * Nothing. | |
1572 | * | |
1573 | ************************/ | |
1574 | void mac_drv_rx_complete(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, | |
1575 | int frag_count, int len) | |
1576 | { | |
1577 | skfddi_priv *bp = &smc->os; | |
1578 | struct sk_buff *skb; | |
1579 | unsigned char *virt, *cp; | |
1580 | unsigned short ri; | |
1581 | u_int RifLength; | |
1582 | ||
d81e27cf | 1583 | pr_debug("entering mac_drv_rx_complete (len=%d)\n", len); |
1da177e4 LT |
1584 | if (frag_count != 1) { // This is not allowed to happen. |
1585 | ||
1586 | printk("fddi: Multi-fragment receive!\n"); | |
1587 | goto RequeueRxd; // Re-use the given RXD(s). | |
1588 | ||
1589 | } | |
1590 | skb = rxd->rxd_os.skb; | |
1591 | if (!skb) { | |
d81e27cf | 1592 | pr_debug("No skb in rxd\n"); |
1da177e4 LT |
1593 | smc->os.MacStat.gen.rx_errors++; |
1594 | goto RequeueRxd; | |
1595 | } | |
1596 | virt = skb->data; | |
1597 | ||
1598 | // The DMA mapping was released in dma_complete above. | |
1599 | ||
1600 | dump_data(skb->data, len); | |
1601 | ||
1602 | /* | |
1603 | * FDDI Frame format: | |
1604 | * +-------+-------+-------+------------+--------+------------+ | |
1605 | * | FC[1] | DA[6] | SA[6] | RIF[0..18] | LLC[3] | Data[0..n] | | |
1606 | * +-------+-------+-------+------------+--------+------------+ | |
1607 | * | |
1608 | * FC = Frame Control | |
1609 | * DA = Destination Address | |
1610 | * SA = Source Address | |
1611 | * RIF = Routing Information Field | |
1612 | * LLC = Logical Link Control | |
1613 | */ | |
1614 | ||
1615 | // Remove Routing Information Field (RIF), if present. | |
1616 | ||
1617 | if ((virt[1 + 6] & FDDI_RII) == 0) | |
1618 | RifLength = 0; | |
1619 | else { | |
1620 | int n; | |
1621 | // goos: RIF removal has still to be tested | |
d81e27cf | 1622 | pr_debug("RIF found\n"); |
1da177e4 LT |
1623 | // Get RIF length from Routing Control (RC) field. |
1624 | cp = virt + FDDI_MAC_HDR_LEN; // Point behind MAC header. | |
1625 | ||
2f220e30 | 1626 | ri = ntohs(*((__be16 *) cp)); |
1da177e4 LT |
1627 | RifLength = ri & FDDI_RCF_LEN_MASK; |
1628 | if (len < (int) (FDDI_MAC_HDR_LEN + RifLength)) { | |
1629 | printk("fddi: Invalid RIF.\n"); | |
1630 | goto RequeueRxd; // Discard the frame. | |
1631 | ||
1632 | } | |
1633 | virt[1 + 6] &= ~FDDI_RII; // Clear RII bit. | |
1634 | // regions overlap | |
1635 | ||
1636 | virt = cp + RifLength; | |
1637 | for (n = FDDI_MAC_HDR_LEN; n; n--) | |
1638 | *--virt = *--cp; | |
1639 | // adjust sbd->data pointer | |
1640 | skb_pull(skb, RifLength); | |
1641 | len -= RifLength; | |
1642 | RifLength = 0; | |
1643 | } | |
1644 | ||
1645 | // Count statistics. | |
1646 | smc->os.MacStat.gen.rx_packets++; // Count indicated receive | |
1647 | // packets. | |
1648 | smc->os.MacStat.gen.rx_bytes+=len; // Count bytes. | |
1649 | ||
1650 | // virt points to header again | |
1651 | if (virt[1] & 0x01) { // Check group (multicast) bit. | |
1652 | ||
1653 | smc->os.MacStat.gen.multicast++; | |
1654 | } | |
1655 | ||
1656 | // deliver frame to system | |
1657 | rxd->rxd_os.skb = NULL; | |
1658 | skb_trim(skb, len); | |
1659 | skb->protocol = fddi_type_trans(skb, bp->dev); | |
1da177e4 LT |
1660 | |
1661 | netif_rx(skb); | |
1da177e4 LT |
1662 | |
1663 | HWM_RX_CHECK(smc, RX_LOW_WATERMARK); | |
1664 | return; | |
1665 | ||
1666 | RequeueRxd: | |
d81e27cf | 1667 | pr_debug("Rx: re-queue RXD.\n"); |
1da177e4 LT |
1668 | mac_drv_requeue_rxd(smc, rxd, frag_count); |
1669 | smc->os.MacStat.gen.rx_errors++; // Count receive packets | |
1670 | // not indicated. | |
1671 | ||
1672 | } // mac_drv_rx_complete | |
1673 | ||
1674 | ||
1675 | /************************ | |
1676 | * | |
1677 | * mac_drv_requeue_rxd | |
1678 | * | |
1679 | * The hardware module calls this function to request the OS-specific | |
1680 | * module to queue the receive buffer(s) represented by the pointer | |
1681 | * to the RxD and the frag_count into the receive queue again. This | |
1682 | * buffer was filled with an invalid frame or an SMT frame. | |
1683 | * Args | |
1684 | * smc - A pointer to the SMT context struct. | |
1685 | * | |
1686 | * rxd - A pointer to the first RxD which is used by the receive frame. | |
1687 | * | |
1688 | * frag_count - Count of RxDs used by the received frame. | |
1689 | * Out | |
1690 | * Nothing. | |
1691 | * | |
1692 | ************************/ | |
1693 | void mac_drv_requeue_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, | |
1694 | int frag_count) | |
1695 | { | |
1696 | volatile struct s_smt_fp_rxd *next_rxd; | |
1697 | volatile struct s_smt_fp_rxd *src_rxd; | |
1698 | struct sk_buff *skb; | |
1699 | int MaxFrameSize; | |
1700 | unsigned char *v_addr; | |
1701 | dma_addr_t b_addr; | |
1702 | ||
1703 | if (frag_count != 1) // This is not allowed to happen. | |
1704 | ||
1705 | printk("fddi: Multi-fragment requeue!\n"); | |
1706 | ||
1707 | MaxFrameSize = smc->os.MaxFrameSize; | |
1708 | src_rxd = rxd; | |
1709 | for (; frag_count > 0; frag_count--) { | |
1710 | next_rxd = src_rxd->rxd_next; | |
1711 | rxd = HWM_GET_CURR_RXD(smc); | |
1712 | ||
1713 | skb = src_rxd->rxd_os.skb; | |
1714 | if (skb == NULL) { // this should not happen | |
1715 | ||
ebc06eeb | 1716 | pr_debug("Requeue with no skb in rxd!\n"); |
1da177e4 LT |
1717 | skb = alloc_skb(MaxFrameSize + 3, GFP_ATOMIC); |
1718 | if (skb) { | |
1719 | // we got a skb | |
1720 | rxd->rxd_os.skb = skb; | |
1721 | skb_reserve(skb, 3); | |
1722 | skb_put(skb, MaxFrameSize); | |
1723 | v_addr = skb->data; | |
1724 | b_addr = pci_map_single(&smc->os.pdev, | |
1725 | v_addr, | |
1726 | MaxFrameSize, | |
1727 | PCI_DMA_FROMDEVICE); | |
1728 | rxd->rxd_os.dma_addr = b_addr; | |
1729 | } else { | |
1730 | // no skb available, use local buffer | |
ebc06eeb | 1731 | pr_debug("Queueing invalid buffer!\n"); |
1da177e4 LT |
1732 | rxd->rxd_os.skb = NULL; |
1733 | v_addr = smc->os.LocalRxBuffer; | |
1734 | b_addr = smc->os.LocalRxBufferDMA; | |
1735 | } | |
1736 | } else { | |
1737 | // we use skb from old rxd | |
1738 | rxd->rxd_os.skb = skb; | |
1739 | v_addr = skb->data; | |
1740 | b_addr = pci_map_single(&smc->os.pdev, | |
1741 | v_addr, | |
1742 | MaxFrameSize, | |
1743 | PCI_DMA_FROMDEVICE); | |
1744 | rxd->rxd_os.dma_addr = b_addr; | |
1745 | } | |
1746 | hwm_rx_frag(smc, v_addr, b_addr, MaxFrameSize, | |
1747 | FIRST_FRAG | LAST_FRAG); | |
1748 | ||
1749 | src_rxd = next_rxd; | |
1750 | } | |
1751 | } // mac_drv_requeue_rxd | |
1752 | ||
1753 | ||
1754 | /************************ | |
1755 | * | |
1756 | * mac_drv_fill_rxd | |
1757 | * | |
1758 | * The hardware module calls this function at initialization time | |
1759 | * to fill the RxD ring with receive buffers. It is also called by | |
1760 | * mac_drv_rx_complete if rx_free is large enough to queue some new | |
1761 | * receive buffers into the RxD ring. mac_drv_fill_rxd queues new | |
1762 | * receive buffers as long as enough RxDs and receive buffers are | |
1763 | * available. | |
1764 | * Args | |
1765 | * smc - A pointer to the SMT context struct. | |
1766 | * Out | |
1767 | * Nothing. | |
1768 | * | |
1769 | ************************/ | |
1770 | void mac_drv_fill_rxd(struct s_smc *smc) | |
1771 | { | |
1772 | int MaxFrameSize; | |
1773 | unsigned char *v_addr; | |
1774 | unsigned long b_addr; | |
1775 | struct sk_buff *skb; | |
1776 | volatile struct s_smt_fp_rxd *rxd; | |
1777 | ||
d81e27cf | 1778 | pr_debug("entering mac_drv_fill_rxd\n"); |
1da177e4 LT |
1779 | |
1780 | // Walk through the list of free receive buffers, passing receive | |
1781 | // buffers to the HWM as long as RXDs are available. | |
1782 | ||
1783 | MaxFrameSize = smc->os.MaxFrameSize; | |
1784 | // Check if there is any RXD left. | |
1785 | while (HWM_GET_RX_FREE(smc) > 0) { | |
d81e27cf | 1786 | pr_debug(".\n"); |
1da177e4 LT |
1787 | |
1788 | rxd = HWM_GET_CURR_RXD(smc); | |
1789 | skb = alloc_skb(MaxFrameSize + 3, GFP_ATOMIC); | |
1790 | if (skb) { | |
1791 | // we got a skb | |
1792 | skb_reserve(skb, 3); | |
1793 | skb_put(skb, MaxFrameSize); | |
1794 | v_addr = skb->data; | |
1795 | b_addr = pci_map_single(&smc->os.pdev, | |
1796 | v_addr, | |
1797 | MaxFrameSize, | |
1798 | PCI_DMA_FROMDEVICE); | |
1799 | rxd->rxd_os.dma_addr = b_addr; | |
1800 | } else { | |
1801 | // no skb available, use local buffer | |
1802 | // System has run out of buffer memory, but we want to | |
1803 | // keep the receiver running in hope of better times. | |
1804 | // Multiple descriptors may point to this local buffer, | |
1805 | // so data in it must be considered invalid. | |
ebc06eeb | 1806 | pr_debug("Queueing invalid buffer!\n"); |
1da177e4 LT |
1807 | v_addr = smc->os.LocalRxBuffer; |
1808 | b_addr = smc->os.LocalRxBufferDMA; | |
1809 | } | |
1810 | ||
1811 | rxd->rxd_os.skb = skb; | |
1812 | ||
1813 | // Pass receive buffer to HWM. | |
1814 | hwm_rx_frag(smc, v_addr, b_addr, MaxFrameSize, | |
1815 | FIRST_FRAG | LAST_FRAG); | |
1816 | } | |
d81e27cf | 1817 | pr_debug("leaving mac_drv_fill_rxd\n"); |
1da177e4 LT |
1818 | } // mac_drv_fill_rxd |
1819 | ||
1820 | ||
1821 | /************************ | |
1822 | * | |
1823 | * mac_drv_clear_rxd | |
1824 | * | |
1825 | * The hardware module calls this function to release unused | |
1826 | * receive buffers. | |
1827 | * Args | |
1828 | * smc - A pointer to the SMT context struct. | |
1829 | * | |
1830 | * rxd - A pointer to the first RxD which is used by the receive buffer. | |
1831 | * | |
1832 | * frag_count - Count of RxDs used by the receive buffer. | |
1833 | * Out | |
1834 | * Nothing. | |
1835 | * | |
1836 | ************************/ | |
1837 | void mac_drv_clear_rxd(struct s_smc *smc, volatile struct s_smt_fp_rxd *rxd, | |
1838 | int frag_count) | |
1839 | { | |
1840 | ||
1841 | struct sk_buff *skb; | |
1842 | ||
ebc06eeb | 1843 | pr_debug("entering mac_drv_clear_rxd\n"); |
1da177e4 LT |
1844 | |
1845 | if (frag_count != 1) // This is not allowed to happen. | |
1846 | ||
1847 | printk("fddi: Multi-fragment clear!\n"); | |
1848 | ||
1849 | for (; frag_count > 0; frag_count--) { | |
1850 | skb = rxd->rxd_os.skb; | |
1851 | if (skb != NULL) { | |
1852 | skfddi_priv *bp = &smc->os; | |
1853 | int MaxFrameSize = bp->MaxFrameSize; | |
1854 | ||
1855 | pci_unmap_single(&bp->pdev, rxd->rxd_os.dma_addr, | |
1856 | MaxFrameSize, PCI_DMA_FROMDEVICE); | |
1857 | ||
1858 | dev_kfree_skb(skb); | |
1859 | rxd->rxd_os.skb = NULL; | |
1860 | } | |
1861 | rxd = rxd->rxd_next; // Next RXD. | |
1862 | ||
1863 | } | |
1864 | } // mac_drv_clear_rxd | |
1865 | ||
1866 | ||
1867 | /************************ | |
1868 | * | |
1869 | * mac_drv_rx_init | |
1870 | * | |
1871 | * The hardware module calls this routine when an SMT or NSA frame of the | |
1872 | * local SMT should be delivered to the LLC layer. | |
1873 | * | |
1874 | * It is necessary to have this function, because there is no other way to | |
1875 | * copy the contents of SMT MBufs into receive buffers. | |
1876 | * | |
1877 | * mac_drv_rx_init allocates the required target memory for this frame, | |
1878 | * and receives the frame fragment by fragment by calling mac_drv_rx_frag. | |
1879 | * Args | |
1880 | * smc - A pointer to the SMT context struct. | |
1881 | * | |
1882 | * len - The length (in bytes) of the received frame (FC, DA, SA, Data). | |
1883 | * | |
1884 | * fc - The Frame Control field of the received frame. | |
1885 | * | |
1886 | * look_ahead - A pointer to the lookahead data buffer (may be NULL). | |
1887 | * | |
1888 | * la_len - The length of the lookahead data stored in the lookahead | |
1889 | * buffer (may be zero). | |
1890 | * Out | |
1891 | * Always returns zero (0). | |
1892 | * | |
1893 | ************************/ | |
1894 | int mac_drv_rx_init(struct s_smc *smc, int len, int fc, | |
1895 | char *look_ahead, int la_len) | |
1896 | { | |
1897 | struct sk_buff *skb; | |
1898 | ||
ebc06eeb | 1899 | pr_debug("entering mac_drv_rx_init(len=%d)\n", len); |
1da177e4 LT |
1900 | |
1901 | // "Received" a SMT or NSA frame of the local SMT. | |
1902 | ||
1903 | if (len != la_len || len < FDDI_MAC_HDR_LEN || !look_ahead) { | |
ebc06eeb AB |
1904 | pr_debug("fddi: Discard invalid local SMT frame\n"); |
1905 | pr_debug(" len=%d, la_len=%d, (ULONG) look_ahead=%08lXh.\n", | |
1da177e4 | 1906 | len, la_len, (unsigned long) look_ahead); |
807540ba | 1907 | return 0; |
1da177e4 LT |
1908 | } |
1909 | skb = alloc_skb(len + 3, GFP_ATOMIC); | |
1910 | if (!skb) { | |
ebc06eeb | 1911 | pr_debug("fddi: Local SMT: skb memory exhausted.\n"); |
807540ba | 1912 | return 0; |
1da177e4 LT |
1913 | } |
1914 | skb_reserve(skb, 3); | |
1915 | skb_put(skb, len); | |
27d7ff46 | 1916 | skb_copy_to_linear_data(skb, look_ahead, len); |
1da177e4 LT |
1917 | |
1918 | // deliver frame to system | |
1919 | skb->protocol = fddi_type_trans(skb, smc->os.dev); | |
1da177e4 LT |
1920 | netif_rx(skb); |
1921 | ||
807540ba | 1922 | return 0; |
1da177e4 LT |
1923 | } // mac_drv_rx_init |
1924 | ||
1925 | ||
1926 | /************************ | |
1927 | * | |
1928 | * smt_timer_poll | |
1929 | * | |
1930 | * This routine is called periodically by the SMT module to clean up the | |
1931 | * driver. | |
1932 | * | |
1933 | * Return any queued frames back to the upper protocol layers if the ring | |
1934 | * is down. | |
1935 | * Args | |
1936 | * smc - A pointer to the SMT context struct. | |
1937 | * Out | |
1938 | * Nothing. | |
1939 | * | |
1940 | ************************/ | |
1941 | void smt_timer_poll(struct s_smc *smc) | |
1942 | { | |
1943 | } // smt_timer_poll | |
1944 | ||
1945 | ||
1946 | /************************ | |
1947 | * | |
1948 | * ring_status_indication | |
1949 | * | |
1950 | * This function indicates a change of the ring state. | |
1951 | * Args | |
1952 | * smc - A pointer to the SMT context struct. | |
1953 | * | |
1954 | * status - The current ring status. | |
1955 | * Out | |
1956 | * Nothing. | |
1957 | * | |
1958 | ************************/ | |
1959 | void ring_status_indication(struct s_smc *smc, u_long status) | |
1960 | { | |
ebc06eeb | 1961 | pr_debug("ring_status_indication( "); |
1da177e4 | 1962 | if (status & RS_RES15) |
ebc06eeb | 1963 | pr_debug("RS_RES15 "); |
1da177e4 | 1964 | if (status & RS_HARDERROR) |
ebc06eeb | 1965 | pr_debug("RS_HARDERROR "); |
1da177e4 | 1966 | if (status & RS_SOFTERROR) |
ebc06eeb | 1967 | pr_debug("RS_SOFTERROR "); |
1da177e4 | 1968 | if (status & RS_BEACON) |
ebc06eeb | 1969 | pr_debug("RS_BEACON "); |
1da177e4 | 1970 | if (status & RS_PATHTEST) |
ebc06eeb | 1971 | pr_debug("RS_PATHTEST "); |
1da177e4 | 1972 | if (status & RS_SELFTEST) |
ebc06eeb | 1973 | pr_debug("RS_SELFTEST "); |
1da177e4 | 1974 | if (status & RS_RES9) |
ebc06eeb | 1975 | pr_debug("RS_RES9 "); |
1da177e4 | 1976 | if (status & RS_DISCONNECT) |
ebc06eeb | 1977 | pr_debug("RS_DISCONNECT "); |
1da177e4 | 1978 | if (status & RS_RES7) |
ebc06eeb | 1979 | pr_debug("RS_RES7 "); |
1da177e4 | 1980 | if (status & RS_DUPADDR) |
ebc06eeb | 1981 | pr_debug("RS_DUPADDR "); |
1da177e4 | 1982 | if (status & RS_NORINGOP) |
ebc06eeb | 1983 | pr_debug("RS_NORINGOP "); |
1da177e4 | 1984 | if (status & RS_VERSION) |
ebc06eeb | 1985 | pr_debug("RS_VERSION "); |
1da177e4 | 1986 | if (status & RS_STUCKBYPASSS) |
ebc06eeb | 1987 | pr_debug("RS_STUCKBYPASSS "); |
1da177e4 | 1988 | if (status & RS_EVENT) |
ebc06eeb | 1989 | pr_debug("RS_EVENT "); |
1da177e4 | 1990 | if (status & RS_RINGOPCHANGE) |
ebc06eeb | 1991 | pr_debug("RS_RINGOPCHANGE "); |
1da177e4 | 1992 | if (status & RS_RES0) |
ebc06eeb AB |
1993 | pr_debug("RS_RES0 "); |
1994 | pr_debug("]\n"); | |
1da177e4 LT |
1995 | } // ring_status_indication |
1996 | ||
1997 | ||
1998 | /************************ | |
1999 | * | |
2000 | * smt_get_time | |
2001 | * | |
2002 | * Gets the current time from the system. | |
2003 | * Args | |
2004 | * None. | |
2005 | * Out | |
2006 | * The current time in TICKS_PER_SECOND. | |
2007 | * | |
2008 | * TICKS_PER_SECOND has the unit 'count of timer ticks per second'. It is | |
2009 | * defined in "targetos.h". The definition of TICKS_PER_SECOND must comply | |
2010 | * to the time returned by smt_get_time(). | |
2011 | * | |
2012 | ************************/ | |
2013 | unsigned long smt_get_time(void) | |
2014 | { | |
2015 | return jiffies; | |
2016 | } // smt_get_time | |
2017 | ||
2018 | ||
2019 | /************************ | |
2020 | * | |
2021 | * smt_stat_counter | |
2022 | * | |
2023 | * Status counter update (ring_op, fifo full). | |
2024 | * Args | |
2025 | * smc - A pointer to the SMT context struct. | |
2026 | * | |
2027 | * stat - = 0: A ring operational change occurred. | |
2028 | * = 1: The FORMAC FIFO buffer is full / FIFO overflow. | |
2029 | * Out | |
2030 | * Nothing. | |
2031 | * | |
2032 | ************************/ | |
2033 | void smt_stat_counter(struct s_smc *smc, int stat) | |
2034 | { | |
2035 | // BOOLEAN RingIsUp ; | |
2036 | ||
d81e27cf | 2037 | pr_debug("smt_stat_counter\n"); |
1da177e4 LT |
2038 | switch (stat) { |
2039 | case 0: | |
d81e27cf | 2040 | pr_debug("Ring operational change.\n"); |
1da177e4 LT |
2041 | break; |
2042 | case 1: | |
d81e27cf | 2043 | pr_debug("Receive fifo overflow.\n"); |
1da177e4 LT |
2044 | smc->os.MacStat.gen.rx_errors++; |
2045 | break; | |
2046 | default: | |
d81e27cf | 2047 | pr_debug("Unknown status (%d).\n", stat); |
1da177e4 LT |
2048 | break; |
2049 | } | |
2050 | } // smt_stat_counter | |
2051 | ||
2052 | ||
2053 | /************************ | |
2054 | * | |
2055 | * cfm_state_change | |
2056 | * | |
2057 | * Sets CFM state in custom statistics. | |
2058 | * Args | |
2059 | * smc - A pointer to the SMT context struct. | |
2060 | * | |
2061 | * c_state - Possible values are: | |
2062 | * | |
2063 | * EC0_OUT, EC1_IN, EC2_TRACE, EC3_LEAVE, EC4_PATH_TEST, | |
2064 | * EC5_INSERT, EC6_CHECK, EC7_DEINSERT | |
2065 | * Out | |
2066 | * Nothing. | |
2067 | * | |
2068 | ************************/ | |
2069 | void cfm_state_change(struct s_smc *smc, int c_state) | |
2070 | { | |
2071 | #ifdef DRIVERDEBUG | |
2072 | char *s; | |
2073 | ||
2074 | switch (c_state) { | |
2075 | case SC0_ISOLATED: | |
2076 | s = "SC0_ISOLATED"; | |
2077 | break; | |
2078 | case SC1_WRAP_A: | |
2079 | s = "SC1_WRAP_A"; | |
2080 | break; | |
2081 | case SC2_WRAP_B: | |
2082 | s = "SC2_WRAP_B"; | |
2083 | break; | |
2084 | case SC4_THRU_A: | |
2085 | s = "SC4_THRU_A"; | |
2086 | break; | |
2087 | case SC5_THRU_B: | |
2088 | s = "SC5_THRU_B"; | |
2089 | break; | |
2090 | case SC7_WRAP_S: | |
2091 | s = "SC7_WRAP_S"; | |
2092 | break; | |
2093 | case SC9_C_WRAP_A: | |
2094 | s = "SC9_C_WRAP_A"; | |
2095 | break; | |
2096 | case SC10_C_WRAP_B: | |
2097 | s = "SC10_C_WRAP_B"; | |
2098 | break; | |
2099 | case SC11_C_WRAP_S: | |
2100 | s = "SC11_C_WRAP_S"; | |
2101 | break; | |
2102 | default: | |
d81e27cf | 2103 | pr_debug("cfm_state_change: unknown %d\n", c_state); |
1da177e4 LT |
2104 | return; |
2105 | } | |
d81e27cf | 2106 | pr_debug("cfm_state_change: %s\n", s); |
1da177e4 LT |
2107 | #endif // DRIVERDEBUG |
2108 | } // cfm_state_change | |
2109 | ||
2110 | ||
2111 | /************************ | |
2112 | * | |
2113 | * ecm_state_change | |
2114 | * | |
2115 | * Sets ECM state in custom statistics. | |
2116 | * Args | |
2117 | * smc - A pointer to the SMT context struct. | |
2118 | * | |
2119 | * e_state - Possible values are: | |
2120 | * | |
2121 | * SC0_ISOLATED, SC1_WRAP_A (5), SC2_WRAP_B (6), SC4_THRU_A (12), | |
2122 | * SC5_THRU_B (7), SC7_WRAP_S (8) | |
2123 | * Out | |
2124 | * Nothing. | |
2125 | * | |
2126 | ************************/ | |
2127 | void ecm_state_change(struct s_smc *smc, int e_state) | |
2128 | { | |
2129 | #ifdef DRIVERDEBUG | |
2130 | char *s; | |
2131 | ||
2132 | switch (e_state) { | |
2133 | case EC0_OUT: | |
2134 | s = "EC0_OUT"; | |
2135 | break; | |
2136 | case EC1_IN: | |
2137 | s = "EC1_IN"; | |
2138 | break; | |
2139 | case EC2_TRACE: | |
2140 | s = "EC2_TRACE"; | |
2141 | break; | |
2142 | case EC3_LEAVE: | |
2143 | s = "EC3_LEAVE"; | |
2144 | break; | |
2145 | case EC4_PATH_TEST: | |
2146 | s = "EC4_PATH_TEST"; | |
2147 | break; | |
2148 | case EC5_INSERT: | |
2149 | s = "EC5_INSERT"; | |
2150 | break; | |
2151 | case EC6_CHECK: | |
2152 | s = "EC6_CHECK"; | |
2153 | break; | |
2154 | case EC7_DEINSERT: | |
2155 | s = "EC7_DEINSERT"; | |
2156 | break; | |
2157 | default: | |
2158 | s = "unknown"; | |
2159 | break; | |
2160 | } | |
d81e27cf | 2161 | pr_debug("ecm_state_change: %s\n", s); |
1da177e4 LT |
2162 | #endif //DRIVERDEBUG |
2163 | } // ecm_state_change | |
2164 | ||
2165 | ||
2166 | /************************ | |
2167 | * | |
2168 | * rmt_state_change | |
2169 | * | |
2170 | * Sets RMT state in custom statistics. | |
2171 | * Args | |
2172 | * smc - A pointer to the SMT context struct. | |
2173 | * | |
2174 | * r_state - Possible values are: | |
2175 | * | |
2176 | * RM0_ISOLATED, RM1_NON_OP, RM2_RING_OP, RM3_DETECT, | |
2177 | * RM4_NON_OP_DUP, RM5_RING_OP_DUP, RM6_DIRECTED, RM7_TRACE | |
2178 | * Out | |
2179 | * Nothing. | |
2180 | * | |
2181 | ************************/ | |
2182 | void rmt_state_change(struct s_smc *smc, int r_state) | |
2183 | { | |
2184 | #ifdef DRIVERDEBUG | |
2185 | char *s; | |
2186 | ||
2187 | switch (r_state) { | |
2188 | case RM0_ISOLATED: | |
2189 | s = "RM0_ISOLATED"; | |
2190 | break; | |
2191 | case RM1_NON_OP: | |
2192 | s = "RM1_NON_OP - not operational"; | |
2193 | break; | |
2194 | case RM2_RING_OP: | |
2195 | s = "RM2_RING_OP - ring operational"; | |
2196 | break; | |
2197 | case RM3_DETECT: | |
2198 | s = "RM3_DETECT - detect dupl addresses"; | |
2199 | break; | |
2200 | case RM4_NON_OP_DUP: | |
2201 | s = "RM4_NON_OP_DUP - dupl. addr detected"; | |
2202 | break; | |
2203 | case RM5_RING_OP_DUP: | |
2204 | s = "RM5_RING_OP_DUP - ring oper. with dupl. addr"; | |
2205 | break; | |
2206 | case RM6_DIRECTED: | |
2207 | s = "RM6_DIRECTED - sending directed beacons"; | |
2208 | break; | |
2209 | case RM7_TRACE: | |
2210 | s = "RM7_TRACE - trace initiated"; | |
2211 | break; | |
2212 | default: | |
2213 | s = "unknown"; | |
2214 | break; | |
2215 | } | |
d81e27cf | 2216 | pr_debug("[rmt_state_change: %s]\n", s); |
1da177e4 LT |
2217 | #endif // DRIVERDEBUG |
2218 | } // rmt_state_change | |
2219 | ||
2220 | ||
2221 | /************************ | |
2222 | * | |
2223 | * drv_reset_indication | |
2224 | * | |
2225 | * This function is called by the SMT when it has detected a severe | |
2226 | * hardware problem. The driver should perform a reset on the adapter | |
2227 | * as soon as possible, but not from within this function. | |
2228 | * Args | |
2229 | * smc - A pointer to the SMT context struct. | |
2230 | * Out | |
2231 | * Nothing. | |
2232 | * | |
2233 | ************************/ | |
2234 | void drv_reset_indication(struct s_smc *smc) | |
2235 | { | |
d81e27cf | 2236 | pr_debug("entering drv_reset_indication\n"); |
1da177e4 LT |
2237 | |
2238 | smc->os.ResetRequested = TRUE; // Set flag. | |
2239 | ||
2240 | } // drv_reset_indication | |
2241 | ||
2242 | static struct pci_driver skfddi_pci_driver = { | |
2243 | .name = "skfddi", | |
2244 | .id_table = skfddi_pci_tbl, | |
2245 | .probe = skfp_init_one, | |
2246 | .remove = __devexit_p(skfp_remove_one), | |
2247 | }; | |
2248 | ||
2249 | static int __init skfd_init(void) | |
2250 | { | |
29917620 | 2251 | return pci_register_driver(&skfddi_pci_driver); |
1da177e4 LT |
2252 | } |
2253 | ||
2254 | static void __exit skfd_exit(void) | |
2255 | { | |
2256 | pci_unregister_driver(&skfddi_pci_driver); | |
2257 | } | |
2258 | ||
2259 | module_init(skfd_init); | |
2260 | module_exit(skfd_exit); |