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1da177e4 LT |
1 | /* |
2 | * rrunner.c: Linux driver for the Essential RoadRunner HIPPI board. | |
3 | * | |
4 | * Copyright (C) 1998-2002 by Jes Sorensen, <jes@wildopensource.com>. | |
5 | * | |
6 | * Thanks to Essential Communication for providing us with hardware | |
7 | * and very comprehensive documentation without which I would not have | |
8 | * been able to write this driver. A special thank you to John Gibbon | |
9 | * for sorting out the legal issues, with the NDA, allowing the code to | |
10 | * be released under the GPL. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * Thanks to Jayaram Bhat from ODS/Essential for fixing some of the | |
18 | * stupid bugs in my code. | |
19 | * | |
20 | * Softnet support and various other patches from Val Henson of | |
21 | * ODS/Essential. | |
22 | * | |
23 | * PCI DMA mapping code partly based on work by Francois Romieu. | |
24 | */ | |
25 | ||
26 | ||
27 | #define DEBUG 1 | |
28 | #define RX_DMA_SKBUFF 1 | |
29 | #define PKT_COPY_THRESHOLD 512 | |
30 | ||
1da177e4 LT |
31 | #include <linux/module.h> |
32 | #include <linux/types.h> | |
33 | #include <linux/errno.h> | |
34 | #include <linux/ioport.h> | |
35 | #include <linux/pci.h> | |
36 | #include <linux/kernel.h> | |
37 | #include <linux/netdevice.h> | |
38 | #include <linux/hippidevice.h> | |
39 | #include <linux/skbuff.h> | |
40 | #include <linux/init.h> | |
41 | #include <linux/delay.h> | |
42 | #include <linux/mm.h> | |
43 | #include <net/sock.h> | |
44 | ||
45 | #include <asm/system.h> | |
46 | #include <asm/cache.h> | |
47 | #include <asm/byteorder.h> | |
48 | #include <asm/io.h> | |
49 | #include <asm/irq.h> | |
50 | #include <asm/uaccess.h> | |
51 | ||
52 | #define rr_if_busy(dev) netif_queue_stopped(dev) | |
53 | #define rr_if_running(dev) netif_running(dev) | |
54 | ||
55 | #include "rrunner.h" | |
56 | ||
57 | #define RUN_AT(x) (jiffies + (x)) | |
58 | ||
59 | ||
60 | MODULE_AUTHOR("Jes Sorensen <jes@wildopensource.com>"); | |
61 | MODULE_DESCRIPTION("Essential RoadRunner HIPPI driver"); | |
62 | MODULE_LICENSE("GPL"); | |
63 | ||
64 | static char version[] __devinitdata = "rrunner.c: v0.50 11/11/2002 Jes Sorensen (jes@wildopensource.com)\n"; | |
65 | ||
66 | /* | |
67 | * Implementation notes: | |
68 | * | |
69 | * The DMA engine only allows for DMA within physical 64KB chunks of | |
70 | * memory. The current approach of the driver (and stack) is to use | |
71 | * linear blocks of memory for the skbuffs. However, as the data block | |
72 | * is always the first part of the skb and skbs are 2^n aligned so we | |
73 | * are guarantted to get the whole block within one 64KB align 64KB | |
74 | * chunk. | |
75 | * | |
76 | * On the long term, relying on being able to allocate 64KB linear | |
77 | * chunks of memory is not feasible and the skb handling code and the | |
78 | * stack will need to know about I/O vectors or something similar. | |
79 | */ | |
80 | ||
81 | /* | |
82 | * These are checked at init time to see if they are at least 256KB | |
83 | * and increased to 256KB if they are not. This is done to avoid ending | |
84 | * up with socket buffers smaller than the MTU size, | |
85 | */ | |
86 | extern __u32 sysctl_wmem_max; | |
87 | extern __u32 sysctl_rmem_max; | |
88 | ||
89 | static int __devinit rr_init_one(struct pci_dev *pdev, | |
90 | const struct pci_device_id *ent) | |
91 | { | |
92 | struct net_device *dev; | |
93 | static int version_disp; | |
94 | u8 pci_latency; | |
95 | struct rr_private *rrpriv; | |
96 | void *tmpptr; | |
97 | dma_addr_t ring_dma; | |
98 | int ret = -ENOMEM; | |
99 | ||
100 | dev = alloc_hippi_dev(sizeof(struct rr_private)); | |
101 | if (!dev) | |
102 | goto out3; | |
103 | ||
104 | ret = pci_enable_device(pdev); | |
105 | if (ret) { | |
106 | ret = -ENODEV; | |
107 | goto out2; | |
108 | } | |
109 | ||
110 | rrpriv = netdev_priv(dev); | |
111 | ||
1da177e4 LT |
112 | SET_NETDEV_DEV(dev, &pdev->dev); |
113 | ||
114 | if (pci_request_regions(pdev, "rrunner")) { | |
115 | ret = -EIO; | |
116 | goto out; | |
117 | } | |
118 | ||
119 | pci_set_drvdata(pdev, dev); | |
120 | ||
121 | rrpriv->pci_dev = pdev; | |
122 | ||
123 | spin_lock_init(&rrpriv->lock); | |
124 | ||
125 | dev->irq = pdev->irq; | |
126 | dev->open = &rr_open; | |
127 | dev->hard_start_xmit = &rr_start_xmit; | |
128 | dev->stop = &rr_close; | |
1da177e4 LT |
129 | dev->do_ioctl = &rr_ioctl; |
130 | ||
131 | dev->base_addr = pci_resource_start(pdev, 0); | |
132 | ||
133 | /* display version info if adapter is found */ | |
134 | if (!version_disp) { | |
135 | /* set display flag to TRUE so that */ | |
136 | /* we only display this string ONCE */ | |
137 | version_disp = 1; | |
138 | printk(version); | |
139 | } | |
140 | ||
141 | pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency); | |
142 | if (pci_latency <= 0x58){ | |
143 | pci_latency = 0x58; | |
144 | pci_write_config_byte(pdev, PCI_LATENCY_TIMER, pci_latency); | |
145 | } | |
146 | ||
147 | pci_set_master(pdev); | |
148 | ||
149 | printk(KERN_INFO "%s: Essential RoadRunner serial HIPPI " | |
150 | "at 0x%08lx, irq %i, PCI latency %i\n", dev->name, | |
151 | dev->base_addr, dev->irq, pci_latency); | |
152 | ||
153 | /* | |
154 | * Remap the regs into kernel space. | |
155 | */ | |
156 | ||
157 | rrpriv->regs = ioremap(dev->base_addr, 0x1000); | |
158 | ||
159 | if (!rrpriv->regs){ | |
160 | printk(KERN_ERR "%s: Unable to map I/O register, " | |
161 | "RoadRunner will be disabled.\n", dev->name); | |
162 | ret = -EIO; | |
163 | goto out; | |
164 | } | |
165 | ||
166 | tmpptr = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma); | |
167 | rrpriv->tx_ring = tmpptr; | |
168 | rrpriv->tx_ring_dma = ring_dma; | |
169 | ||
170 | if (!tmpptr) { | |
171 | ret = -ENOMEM; | |
172 | goto out; | |
173 | } | |
174 | ||
175 | tmpptr = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma); | |
176 | rrpriv->rx_ring = tmpptr; | |
177 | rrpriv->rx_ring_dma = ring_dma; | |
178 | ||
179 | if (!tmpptr) { | |
180 | ret = -ENOMEM; | |
181 | goto out; | |
182 | } | |
183 | ||
184 | tmpptr = pci_alloc_consistent(pdev, EVT_RING_SIZE, &ring_dma); | |
185 | rrpriv->evt_ring = tmpptr; | |
186 | rrpriv->evt_ring_dma = ring_dma; | |
187 | ||
188 | if (!tmpptr) { | |
189 | ret = -ENOMEM; | |
190 | goto out; | |
191 | } | |
192 | ||
193 | /* | |
194 | * Don't access any register before this point! | |
195 | */ | |
196 | #ifdef __BIG_ENDIAN | |
197 | writel(readl(&rrpriv->regs->HostCtrl) | NO_SWAP, | |
198 | &rrpriv->regs->HostCtrl); | |
199 | #endif | |
200 | /* | |
201 | * Need to add a case for little-endian 64-bit hosts here. | |
202 | */ | |
203 | ||
204 | rr_init(dev); | |
205 | ||
206 | dev->base_addr = 0; | |
207 | ||
208 | ret = register_netdev(dev); | |
209 | if (ret) | |
210 | goto out; | |
211 | return 0; | |
212 | ||
213 | out: | |
214 | if (rrpriv->rx_ring) | |
6aa20a22 | 215 | pci_free_consistent(pdev, RX_TOTAL_SIZE, rrpriv->rx_ring, |
1da177e4 LT |
216 | rrpriv->rx_ring_dma); |
217 | if (rrpriv->tx_ring) | |
218 | pci_free_consistent(pdev, TX_TOTAL_SIZE, rrpriv->tx_ring, | |
219 | rrpriv->tx_ring_dma); | |
220 | if (rrpriv->regs) | |
6aa20a22 | 221 | iounmap(rrpriv->regs); |
1da177e4 LT |
222 | if (pdev) { |
223 | pci_release_regions(pdev); | |
224 | pci_set_drvdata(pdev, NULL); | |
225 | } | |
226 | out2: | |
227 | free_netdev(dev); | |
228 | out3: | |
229 | return ret; | |
230 | } | |
231 | ||
232 | static void __devexit rr_remove_one (struct pci_dev *pdev) | |
233 | { | |
234 | struct net_device *dev = pci_get_drvdata(pdev); | |
235 | ||
236 | if (dev) { | |
237 | struct rr_private *rr = netdev_priv(dev); | |
238 | ||
239 | if (!(readl(&rr->regs->HostCtrl) & NIC_HALTED)){ | |
240 | printk(KERN_ERR "%s: trying to unload running NIC\n", | |
241 | dev->name); | |
242 | writel(HALT_NIC, &rr->regs->HostCtrl); | |
243 | } | |
244 | ||
245 | pci_free_consistent(pdev, EVT_RING_SIZE, rr->evt_ring, | |
246 | rr->evt_ring_dma); | |
247 | pci_free_consistent(pdev, RX_TOTAL_SIZE, rr->rx_ring, | |
248 | rr->rx_ring_dma); | |
249 | pci_free_consistent(pdev, TX_TOTAL_SIZE, rr->tx_ring, | |
250 | rr->tx_ring_dma); | |
251 | unregister_netdev(dev); | |
252 | iounmap(rr->regs); | |
253 | free_netdev(dev); | |
254 | pci_release_regions(pdev); | |
255 | pci_disable_device(pdev); | |
256 | pci_set_drvdata(pdev, NULL); | |
257 | } | |
258 | } | |
259 | ||
260 | ||
261 | /* | |
262 | * Commands are considered to be slow, thus there is no reason to | |
263 | * inline this. | |
264 | */ | |
265 | static void rr_issue_cmd(struct rr_private *rrpriv, struct cmd *cmd) | |
266 | { | |
267 | struct rr_regs __iomem *regs; | |
268 | u32 idx; | |
269 | ||
270 | regs = rrpriv->regs; | |
271 | /* | |
272 | * This is temporary - it will go away in the final version. | |
273 | * We probably also want to make this function inline. | |
274 | */ | |
275 | if (readl(®s->HostCtrl) & NIC_HALTED){ | |
276 | printk("issuing command for halted NIC, code 0x%x, " | |
277 | "HostCtrl %08x\n", cmd->code, readl(®s->HostCtrl)); | |
278 | if (readl(®s->Mode) & FATAL_ERR) | |
279 | printk("error codes Fail1 %02x, Fail2 %02x\n", | |
280 | readl(®s->Fail1), readl(®s->Fail2)); | |
281 | } | |
282 | ||
283 | idx = rrpriv->info->cmd_ctrl.pi; | |
284 | ||
285 | writel(*(u32*)(cmd), ®s->CmdRing[idx]); | |
286 | wmb(); | |
287 | ||
288 | idx = (idx - 1) % CMD_RING_ENTRIES; | |
289 | rrpriv->info->cmd_ctrl.pi = idx; | |
290 | wmb(); | |
291 | ||
292 | if (readl(®s->Mode) & FATAL_ERR) | |
293 | printk("error code %02x\n", readl(®s->Fail1)); | |
294 | } | |
295 | ||
296 | ||
297 | /* | |
298 | * Reset the board in a sensible manner. The NIC is already halted | |
299 | * when we get here and a spin-lock is held. | |
300 | */ | |
301 | static int rr_reset(struct net_device *dev) | |
302 | { | |
303 | struct rr_private *rrpriv; | |
304 | struct rr_regs __iomem *regs; | |
305 | struct eeprom *hw = NULL; | |
306 | u32 start_pc; | |
307 | int i; | |
308 | ||
309 | rrpriv = netdev_priv(dev); | |
310 | regs = rrpriv->regs; | |
311 | ||
312 | rr_load_firmware(dev); | |
313 | ||
314 | writel(0x01000000, ®s->TX_state); | |
315 | writel(0xff800000, ®s->RX_state); | |
316 | writel(0, ®s->AssistState); | |
317 | writel(CLEAR_INTA, ®s->LocalCtrl); | |
318 | writel(0x01, ®s->BrkPt); | |
319 | writel(0, ®s->Timer); | |
320 | writel(0, ®s->TimerRef); | |
321 | writel(RESET_DMA, ®s->DmaReadState); | |
322 | writel(RESET_DMA, ®s->DmaWriteState); | |
323 | writel(0, ®s->DmaWriteHostHi); | |
324 | writel(0, ®s->DmaWriteHostLo); | |
325 | writel(0, ®s->DmaReadHostHi); | |
326 | writel(0, ®s->DmaReadHostLo); | |
327 | writel(0, ®s->DmaReadLen); | |
328 | writel(0, ®s->DmaWriteLen); | |
329 | writel(0, ®s->DmaWriteLcl); | |
330 | writel(0, ®s->DmaWriteIPchecksum); | |
331 | writel(0, ®s->DmaReadLcl); | |
332 | writel(0, ®s->DmaReadIPchecksum); | |
333 | writel(0, ®s->PciState); | |
334 | #if (BITS_PER_LONG == 64) && defined __LITTLE_ENDIAN | |
335 | writel(SWAP_DATA | PTR64BIT | PTR_WD_SWAP, ®s->Mode); | |
336 | #elif (BITS_PER_LONG == 64) | |
337 | writel(SWAP_DATA | PTR64BIT | PTR_WD_NOSWAP, ®s->Mode); | |
338 | #else | |
339 | writel(SWAP_DATA | PTR32BIT | PTR_WD_NOSWAP, ®s->Mode); | |
340 | #endif | |
341 | ||
342 | #if 0 | |
343 | /* | |
344 | * Don't worry, this is just black magic. | |
345 | */ | |
346 | writel(0xdf000, ®s->RxBase); | |
347 | writel(0xdf000, ®s->RxPrd); | |
348 | writel(0xdf000, ®s->RxCon); | |
349 | writel(0xce000, ®s->TxBase); | |
350 | writel(0xce000, ®s->TxPrd); | |
351 | writel(0xce000, ®s->TxCon); | |
352 | writel(0, ®s->RxIndPro); | |
353 | writel(0, ®s->RxIndCon); | |
354 | writel(0, ®s->RxIndRef); | |
355 | writel(0, ®s->TxIndPro); | |
356 | writel(0, ®s->TxIndCon); | |
357 | writel(0, ®s->TxIndRef); | |
358 | writel(0xcc000, ®s->pad10[0]); | |
359 | writel(0, ®s->DrCmndPro); | |
360 | writel(0, ®s->DrCmndCon); | |
361 | writel(0, ®s->DwCmndPro); | |
362 | writel(0, ®s->DwCmndCon); | |
363 | writel(0, ®s->DwCmndRef); | |
364 | writel(0, ®s->DrDataPro); | |
365 | writel(0, ®s->DrDataCon); | |
366 | writel(0, ®s->DrDataRef); | |
367 | writel(0, ®s->DwDataPro); | |
368 | writel(0, ®s->DwDataCon); | |
369 | writel(0, ®s->DwDataRef); | |
370 | #endif | |
371 | ||
372 | writel(0xffffffff, ®s->MbEvent); | |
373 | writel(0, ®s->Event); | |
374 | ||
375 | writel(0, ®s->TxPi); | |
376 | writel(0, ®s->IpRxPi); | |
377 | ||
378 | writel(0, ®s->EvtCon); | |
379 | writel(0, ®s->EvtPrd); | |
380 | ||
381 | rrpriv->info->evt_ctrl.pi = 0; | |
382 | ||
383 | for (i = 0; i < CMD_RING_ENTRIES; i++) | |
384 | writel(0, ®s->CmdRing[i]); | |
385 | ||
386 | /* | |
387 | * Why 32 ? is this not cache line size dependent? | |
388 | */ | |
389 | writel(RBURST_64|WBURST_64, ®s->PciState); | |
390 | wmb(); | |
391 | ||
392 | start_pc = rr_read_eeprom_word(rrpriv, &hw->rncd_info.FwStart); | |
393 | ||
394 | #if (DEBUG > 1) | |
395 | printk("%s: Executing firmware at address 0x%06x\n", | |
396 | dev->name, start_pc); | |
397 | #endif | |
398 | ||
399 | writel(start_pc + 0x800, ®s->Pc); | |
400 | wmb(); | |
401 | udelay(5); | |
402 | ||
403 | writel(start_pc, ®s->Pc); | |
404 | wmb(); | |
405 | ||
406 | return 0; | |
407 | } | |
408 | ||
409 | ||
410 | /* | |
411 | * Read a string from the EEPROM. | |
412 | */ | |
413 | static unsigned int rr_read_eeprom(struct rr_private *rrpriv, | |
414 | unsigned long offset, | |
415 | unsigned char *buf, | |
416 | unsigned long length) | |
417 | { | |
418 | struct rr_regs __iomem *regs = rrpriv->regs; | |
419 | u32 misc, io, host, i; | |
420 | ||
421 | io = readl(®s->ExtIo); | |
422 | writel(0, ®s->ExtIo); | |
423 | misc = readl(®s->LocalCtrl); | |
424 | writel(0, ®s->LocalCtrl); | |
425 | host = readl(®s->HostCtrl); | |
426 | writel(host | HALT_NIC, ®s->HostCtrl); | |
427 | mb(); | |
428 | ||
429 | for (i = 0; i < length; i++){ | |
430 | writel((EEPROM_BASE + ((offset+i) << 3)), ®s->WinBase); | |
431 | mb(); | |
432 | buf[i] = (readl(®s->WinData) >> 24) & 0xff; | |
433 | mb(); | |
434 | } | |
435 | ||
436 | writel(host, ®s->HostCtrl); | |
437 | writel(misc, ®s->LocalCtrl); | |
438 | writel(io, ®s->ExtIo); | |
439 | mb(); | |
440 | return i; | |
441 | } | |
442 | ||
443 | ||
444 | /* | |
445 | * Shortcut to read one word (4 bytes) out of the EEPROM and convert | |
446 | * it to our CPU byte-order. | |
447 | */ | |
448 | static u32 rr_read_eeprom_word(struct rr_private *rrpriv, | |
449 | void * offset) | |
450 | { | |
451 | u32 word; | |
452 | ||
453 | if ((rr_read_eeprom(rrpriv, (unsigned long)offset, | |
454 | (char *)&word, 4) == 4)) | |
455 | return be32_to_cpu(word); | |
456 | return 0; | |
457 | } | |
458 | ||
459 | ||
460 | /* | |
461 | * Write a string to the EEPROM. | |
462 | * | |
463 | * This is only called when the firmware is not running. | |
464 | */ | |
465 | static unsigned int write_eeprom(struct rr_private *rrpriv, | |
466 | unsigned long offset, | |
467 | unsigned char *buf, | |
468 | unsigned long length) | |
469 | { | |
470 | struct rr_regs __iomem *regs = rrpriv->regs; | |
471 | u32 misc, io, data, i, j, ready, error = 0; | |
472 | ||
473 | io = readl(®s->ExtIo); | |
474 | writel(0, ®s->ExtIo); | |
475 | misc = readl(®s->LocalCtrl); | |
476 | writel(ENABLE_EEPROM_WRITE, ®s->LocalCtrl); | |
477 | mb(); | |
478 | ||
479 | for (i = 0; i < length; i++){ | |
480 | writel((EEPROM_BASE + ((offset+i) << 3)), ®s->WinBase); | |
481 | mb(); | |
482 | data = buf[i] << 24; | |
483 | /* | |
484 | * Only try to write the data if it is not the same | |
485 | * value already. | |
486 | */ | |
487 | if ((readl(®s->WinData) & 0xff000000) != data){ | |
488 | writel(data, ®s->WinData); | |
489 | ready = 0; | |
490 | j = 0; | |
491 | mb(); | |
492 | while(!ready){ | |
493 | udelay(20); | |
494 | if ((readl(®s->WinData) & 0xff000000) == | |
495 | data) | |
496 | ready = 1; | |
497 | mb(); | |
498 | if (j++ > 5000){ | |
499 | printk("data mismatch: %08x, " | |
500 | "WinData %08x\n", data, | |
501 | readl(®s->WinData)); | |
502 | ready = 1; | |
503 | error = 1; | |
504 | } | |
505 | } | |
506 | } | |
507 | } | |
508 | ||
509 | writel(misc, ®s->LocalCtrl); | |
510 | writel(io, ®s->ExtIo); | |
511 | mb(); | |
512 | ||
513 | return error; | |
514 | } | |
515 | ||
516 | ||
4f092432 | 517 | static int __devinit rr_init(struct net_device *dev) |
1da177e4 LT |
518 | { |
519 | struct rr_private *rrpriv; | |
520 | struct rr_regs __iomem *regs; | |
521 | struct eeprom *hw = NULL; | |
522 | u32 sram_size, rev; | |
523 | int i; | |
524 | ||
525 | rrpriv = netdev_priv(dev); | |
526 | regs = rrpriv->regs; | |
527 | ||
528 | rev = readl(®s->FwRev); | |
529 | rrpriv->fw_rev = rev; | |
530 | if (rev > 0x00020024) | |
531 | printk(" Firmware revision: %i.%i.%i\n", (rev >> 16), | |
532 | ((rev >> 8) & 0xff), (rev & 0xff)); | |
533 | else if (rev >= 0x00020000) { | |
534 | printk(" Firmware revision: %i.%i.%i (2.0.37 or " | |
535 | "later is recommended)\n", (rev >> 16), | |
536 | ((rev >> 8) & 0xff), (rev & 0xff)); | |
537 | }else{ | |
538 | printk(" Firmware revision too old: %i.%i.%i, please " | |
539 | "upgrade to 2.0.37 or later.\n", | |
540 | (rev >> 16), ((rev >> 8) & 0xff), (rev & 0xff)); | |
541 | } | |
542 | ||
543 | #if (DEBUG > 2) | |
544 | printk(" Maximum receive rings %i\n", readl(®s->MaxRxRng)); | |
545 | #endif | |
546 | ||
547 | /* | |
548 | * Read the hardware address from the eeprom. The HW address | |
549 | * is not really necessary for HIPPI but awfully convenient. | |
550 | * The pointer arithmetic to put it in dev_addr is ugly, but | |
551 | * Donald Becker does it this way for the GigE version of this | |
552 | * card and it's shorter and more portable than any | |
553 | * other method I've seen. -VAL | |
554 | */ | |
555 | ||
556 | *(u16 *)(dev->dev_addr) = | |
557 | htons(rr_read_eeprom_word(rrpriv, &hw->manf.BoardULA)); | |
558 | *(u32 *)(dev->dev_addr+2) = | |
559 | htonl(rr_read_eeprom_word(rrpriv, &hw->manf.BoardULA[4])); | |
6aa20a22 | 560 | |
1da177e4 LT |
561 | printk(" MAC: "); |
562 | ||
563 | for (i = 0; i < 5; i++) | |
564 | printk("%2.2x:", dev->dev_addr[i]); | |
565 | printk("%2.2x\n", dev->dev_addr[i]); | |
566 | ||
567 | sram_size = rr_read_eeprom_word(rrpriv, (void *)8); | |
568 | printk(" SRAM size 0x%06x\n", sram_size); | |
569 | ||
570 | if (sysctl_rmem_max < 262144){ | |
571 | printk(" Receive socket buffer limit too low (%i), " | |
572 | "setting to 262144\n", sysctl_rmem_max); | |
573 | sysctl_rmem_max = 262144; | |
574 | } | |
575 | ||
576 | if (sysctl_wmem_max < 262144){ | |
577 | printk(" Transmit socket buffer limit too low (%i), " | |
578 | "setting to 262144\n", sysctl_wmem_max); | |
579 | sysctl_wmem_max = 262144; | |
580 | } | |
581 | ||
582 | return 0; | |
583 | } | |
584 | ||
585 | ||
586 | static int rr_init1(struct net_device *dev) | |
587 | { | |
588 | struct rr_private *rrpriv; | |
589 | struct rr_regs __iomem *regs; | |
590 | unsigned long myjif, flags; | |
591 | struct cmd cmd; | |
592 | u32 hostctrl; | |
593 | int ecode = 0; | |
594 | short i; | |
595 | ||
596 | rrpriv = netdev_priv(dev); | |
597 | regs = rrpriv->regs; | |
598 | ||
599 | spin_lock_irqsave(&rrpriv->lock, flags); | |
600 | ||
601 | hostctrl = readl(®s->HostCtrl); | |
602 | writel(hostctrl | HALT_NIC | RR_CLEAR_INT, ®s->HostCtrl); | |
603 | wmb(); | |
604 | ||
605 | if (hostctrl & PARITY_ERR){ | |
606 | printk("%s: Parity error halting NIC - this is serious!\n", | |
607 | dev->name); | |
608 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
609 | ecode = -EFAULT; | |
610 | goto error; | |
611 | } | |
612 | ||
613 | set_rxaddr(regs, rrpriv->rx_ctrl_dma); | |
614 | set_infoaddr(regs, rrpriv->info_dma); | |
615 | ||
616 | rrpriv->info->evt_ctrl.entry_size = sizeof(struct event); | |
617 | rrpriv->info->evt_ctrl.entries = EVT_RING_ENTRIES; | |
618 | rrpriv->info->evt_ctrl.mode = 0; | |
619 | rrpriv->info->evt_ctrl.pi = 0; | |
620 | set_rraddr(&rrpriv->info->evt_ctrl.rngptr, rrpriv->evt_ring_dma); | |
621 | ||
622 | rrpriv->info->cmd_ctrl.entry_size = sizeof(struct cmd); | |
623 | rrpriv->info->cmd_ctrl.entries = CMD_RING_ENTRIES; | |
624 | rrpriv->info->cmd_ctrl.mode = 0; | |
625 | rrpriv->info->cmd_ctrl.pi = 15; | |
626 | ||
627 | for (i = 0; i < CMD_RING_ENTRIES; i++) { | |
628 | writel(0, ®s->CmdRing[i]); | |
629 | } | |
630 | ||
631 | for (i = 0; i < TX_RING_ENTRIES; i++) { | |
632 | rrpriv->tx_ring[i].size = 0; | |
633 | set_rraddr(&rrpriv->tx_ring[i].addr, 0); | |
634 | rrpriv->tx_skbuff[i] = NULL; | |
635 | } | |
636 | rrpriv->info->tx_ctrl.entry_size = sizeof(struct tx_desc); | |
637 | rrpriv->info->tx_ctrl.entries = TX_RING_ENTRIES; | |
638 | rrpriv->info->tx_ctrl.mode = 0; | |
639 | rrpriv->info->tx_ctrl.pi = 0; | |
640 | set_rraddr(&rrpriv->info->tx_ctrl.rngptr, rrpriv->tx_ring_dma); | |
641 | ||
642 | /* | |
643 | * Set dirty_tx before we start receiving interrupts, otherwise | |
644 | * the interrupt handler might think it is supposed to process | |
645 | * tx ints before we are up and running, which may cause a null | |
646 | * pointer access in the int handler. | |
647 | */ | |
648 | rrpriv->tx_full = 0; | |
649 | rrpriv->cur_rx = 0; | |
650 | rrpriv->dirty_rx = rrpriv->dirty_tx = 0; | |
651 | ||
652 | rr_reset(dev); | |
653 | ||
654 | /* Tuning values */ | |
655 | writel(0x5000, ®s->ConRetry); | |
656 | writel(0x100, ®s->ConRetryTmr); | |
657 | writel(0x500000, ®s->ConTmout); | |
658 | writel(0x60, ®s->IntrTmr); | |
659 | writel(0x500000, ®s->TxDataMvTimeout); | |
660 | writel(0x200000, ®s->RxDataMvTimeout); | |
661 | writel(0x80, ®s->WriteDmaThresh); | |
662 | writel(0x80, ®s->ReadDmaThresh); | |
663 | ||
664 | rrpriv->fw_running = 0; | |
665 | wmb(); | |
666 | ||
667 | hostctrl &= ~(HALT_NIC | INVALID_INST_B | PARITY_ERR); | |
668 | writel(hostctrl, ®s->HostCtrl); | |
669 | wmb(); | |
670 | ||
671 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
672 | ||
673 | for (i = 0; i < RX_RING_ENTRIES; i++) { | |
674 | struct sk_buff *skb; | |
675 | dma_addr_t addr; | |
676 | ||
677 | rrpriv->rx_ring[i].mode = 0; | |
678 | skb = alloc_skb(dev->mtu + HIPPI_HLEN, GFP_ATOMIC); | |
679 | if (!skb) { | |
680 | printk(KERN_WARNING "%s: Unable to allocate memory " | |
681 | "for receive ring - halting NIC\n", dev->name); | |
682 | ecode = -ENOMEM; | |
683 | goto error; | |
684 | } | |
685 | rrpriv->rx_skbuff[i] = skb; | |
686 | addr = pci_map_single(rrpriv->pci_dev, skb->data, | |
687 | dev->mtu + HIPPI_HLEN, PCI_DMA_FROMDEVICE); | |
688 | /* | |
689 | * Sanity test to see if we conflict with the DMA | |
690 | * limitations of the Roadrunner. | |
691 | */ | |
692 | if ((((unsigned long)skb->data) & 0xfff) > ~65320) | |
693 | printk("skb alloc error\n"); | |
694 | ||
695 | set_rraddr(&rrpriv->rx_ring[i].addr, addr); | |
696 | rrpriv->rx_ring[i].size = dev->mtu + HIPPI_HLEN; | |
697 | } | |
698 | ||
699 | rrpriv->rx_ctrl[4].entry_size = sizeof(struct rx_desc); | |
700 | rrpriv->rx_ctrl[4].entries = RX_RING_ENTRIES; | |
701 | rrpriv->rx_ctrl[4].mode = 8; | |
702 | rrpriv->rx_ctrl[4].pi = 0; | |
703 | wmb(); | |
704 | set_rraddr(&rrpriv->rx_ctrl[4].rngptr, rrpriv->rx_ring_dma); | |
705 | ||
706 | udelay(1000); | |
707 | ||
708 | /* | |
709 | * Now start the FirmWare. | |
710 | */ | |
711 | cmd.code = C_START_FW; | |
712 | cmd.ring = 0; | |
713 | cmd.index = 0; | |
714 | ||
715 | rr_issue_cmd(rrpriv, &cmd); | |
716 | ||
717 | /* | |
718 | * Give the FirmWare time to chew on the `get running' command. | |
719 | */ | |
720 | myjif = jiffies + 5 * HZ; | |
721 | while (time_before(jiffies, myjif) && !rrpriv->fw_running) | |
722 | cpu_relax(); | |
723 | ||
724 | netif_start_queue(dev); | |
725 | ||
726 | return ecode; | |
727 | ||
728 | error: | |
729 | /* | |
730 | * We might have gotten here because we are out of memory, | |
731 | * make sure we release everything we allocated before failing | |
732 | */ | |
733 | for (i = 0; i < RX_RING_ENTRIES; i++) { | |
734 | struct sk_buff *skb = rrpriv->rx_skbuff[i]; | |
735 | ||
736 | if (skb) { | |
6aa20a22 JG |
737 | pci_unmap_single(rrpriv->pci_dev, |
738 | rrpriv->rx_ring[i].addr.addrlo, | |
1da177e4 LT |
739 | dev->mtu + HIPPI_HLEN, |
740 | PCI_DMA_FROMDEVICE); | |
741 | rrpriv->rx_ring[i].size = 0; | |
742 | set_rraddr(&rrpriv->rx_ring[i].addr, 0); | |
743 | dev_kfree_skb(skb); | |
744 | rrpriv->rx_skbuff[i] = NULL; | |
745 | } | |
746 | } | |
747 | return ecode; | |
748 | } | |
749 | ||
750 | ||
751 | /* | |
752 | * All events are considered to be slow (RX/TX ints do not generate | |
753 | * events) and are handled here, outside the main interrupt handler, | |
754 | * to reduce the size of the handler. | |
755 | */ | |
756 | static u32 rr_handle_event(struct net_device *dev, u32 prodidx, u32 eidx) | |
757 | { | |
758 | struct rr_private *rrpriv; | |
759 | struct rr_regs __iomem *regs; | |
760 | u32 tmp; | |
761 | ||
762 | rrpriv = netdev_priv(dev); | |
763 | regs = rrpriv->regs; | |
764 | ||
765 | while (prodidx != eidx){ | |
766 | switch (rrpriv->evt_ring[eidx].code){ | |
767 | case E_NIC_UP: | |
768 | tmp = readl(®s->FwRev); | |
769 | printk(KERN_INFO "%s: Firmware revision %i.%i.%i " | |
770 | "up and running\n", dev->name, | |
771 | (tmp >> 16), ((tmp >> 8) & 0xff), (tmp & 0xff)); | |
772 | rrpriv->fw_running = 1; | |
773 | writel(RX_RING_ENTRIES - 1, ®s->IpRxPi); | |
774 | wmb(); | |
775 | break; | |
776 | case E_LINK_ON: | |
777 | printk(KERN_INFO "%s: Optical link ON\n", dev->name); | |
778 | break; | |
779 | case E_LINK_OFF: | |
780 | printk(KERN_INFO "%s: Optical link OFF\n", dev->name); | |
781 | break; | |
782 | case E_RX_IDLE: | |
783 | printk(KERN_WARNING "%s: RX data not moving\n", | |
784 | dev->name); | |
785 | goto drop; | |
786 | case E_WATCHDOG: | |
787 | printk(KERN_INFO "%s: The watchdog is here to see " | |
788 | "us\n", dev->name); | |
789 | break; | |
790 | case E_INTERN_ERR: | |
791 | printk(KERN_ERR "%s: HIPPI Internal NIC error\n", | |
792 | dev->name); | |
6aa20a22 | 793 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
794 | ®s->HostCtrl); |
795 | wmb(); | |
796 | break; | |
797 | case E_HOST_ERR: | |
798 | printk(KERN_ERR "%s: Host software error\n", | |
799 | dev->name); | |
6aa20a22 | 800 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
801 | ®s->HostCtrl); |
802 | wmb(); | |
803 | break; | |
804 | /* | |
805 | * TX events. | |
806 | */ | |
807 | case E_CON_REJ: | |
808 | printk(KERN_WARNING "%s: Connection rejected\n", | |
809 | dev->name); | |
09f75cd7 | 810 | dev->stats.tx_aborted_errors++; |
1da177e4 LT |
811 | break; |
812 | case E_CON_TMOUT: | |
813 | printk(KERN_WARNING "%s: Connection timeout\n", | |
814 | dev->name); | |
815 | break; | |
816 | case E_DISC_ERR: | |
817 | printk(KERN_WARNING "%s: HIPPI disconnect error\n", | |
818 | dev->name); | |
09f75cd7 | 819 | dev->stats.tx_aborted_errors++; |
1da177e4 LT |
820 | break; |
821 | case E_INT_PRTY: | |
822 | printk(KERN_ERR "%s: HIPPI Internal Parity error\n", | |
823 | dev->name); | |
6aa20a22 | 824 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
825 | ®s->HostCtrl); |
826 | wmb(); | |
827 | break; | |
828 | case E_TX_IDLE: | |
829 | printk(KERN_WARNING "%s: Transmitter idle\n", | |
830 | dev->name); | |
831 | break; | |
832 | case E_TX_LINK_DROP: | |
833 | printk(KERN_WARNING "%s: Link lost during transmit\n", | |
834 | dev->name); | |
09f75cd7 | 835 | dev->stats.tx_aborted_errors++; |
6aa20a22 | 836 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
837 | ®s->HostCtrl); |
838 | wmb(); | |
839 | break; | |
840 | case E_TX_INV_RNG: | |
841 | printk(KERN_ERR "%s: Invalid send ring block\n", | |
842 | dev->name); | |
6aa20a22 | 843 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
844 | ®s->HostCtrl); |
845 | wmb(); | |
846 | break; | |
847 | case E_TX_INV_BUF: | |
848 | printk(KERN_ERR "%s: Invalid send buffer address\n", | |
849 | dev->name); | |
6aa20a22 | 850 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
851 | ®s->HostCtrl); |
852 | wmb(); | |
853 | break; | |
854 | case E_TX_INV_DSC: | |
855 | printk(KERN_ERR "%s: Invalid descriptor address\n", | |
856 | dev->name); | |
6aa20a22 | 857 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
858 | ®s->HostCtrl); |
859 | wmb(); | |
860 | break; | |
861 | /* | |
862 | * RX events. | |
863 | */ | |
864 | case E_RX_RNG_OUT: | |
865 | printk(KERN_INFO "%s: Receive ring full\n", dev->name); | |
866 | break; | |
867 | ||
868 | case E_RX_PAR_ERR: | |
869 | printk(KERN_WARNING "%s: Receive parity error\n", | |
870 | dev->name); | |
871 | goto drop; | |
872 | case E_RX_LLRC_ERR: | |
873 | printk(KERN_WARNING "%s: Receive LLRC error\n", | |
874 | dev->name); | |
875 | goto drop; | |
876 | case E_PKT_LN_ERR: | |
877 | printk(KERN_WARNING "%s: Receive packet length " | |
878 | "error\n", dev->name); | |
879 | goto drop; | |
880 | case E_DTA_CKSM_ERR: | |
881 | printk(KERN_WARNING "%s: Data checksum error\n", | |
882 | dev->name); | |
883 | goto drop; | |
884 | case E_SHT_BST: | |
885 | printk(KERN_WARNING "%s: Unexpected short burst " | |
886 | "error\n", dev->name); | |
887 | goto drop; | |
888 | case E_STATE_ERR: | |
889 | printk(KERN_WARNING "%s: Recv. state transition" | |
890 | " error\n", dev->name); | |
891 | goto drop; | |
892 | case E_UNEXP_DATA: | |
893 | printk(KERN_WARNING "%s: Unexpected data error\n", | |
894 | dev->name); | |
895 | goto drop; | |
896 | case E_LST_LNK_ERR: | |
897 | printk(KERN_WARNING "%s: Link lost error\n", | |
898 | dev->name); | |
899 | goto drop; | |
900 | case E_FRM_ERR: | |
901 | printk(KERN_WARNING "%s: Framming Error\n", | |
902 | dev->name); | |
903 | goto drop; | |
904 | case E_FLG_SYN_ERR: | |
905 | printk(KERN_WARNING "%s: Flag sync. lost during" | |
906 | "packet\n", dev->name); | |
907 | goto drop; | |
908 | case E_RX_INV_BUF: | |
909 | printk(KERN_ERR "%s: Invalid receive buffer " | |
910 | "address\n", dev->name); | |
6aa20a22 | 911 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
912 | ®s->HostCtrl); |
913 | wmb(); | |
914 | break; | |
915 | case E_RX_INV_DSC: | |
916 | printk(KERN_ERR "%s: Invalid receive descriptor " | |
917 | "address\n", dev->name); | |
6aa20a22 | 918 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
919 | ®s->HostCtrl); |
920 | wmb(); | |
921 | break; | |
922 | case E_RNG_BLK: | |
923 | printk(KERN_ERR "%s: Invalid ring block\n", | |
924 | dev->name); | |
6aa20a22 | 925 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
926 | ®s->HostCtrl); |
927 | wmb(); | |
928 | break; | |
929 | drop: | |
930 | /* Label packet to be dropped. | |
931 | * Actual dropping occurs in rx | |
932 | * handling. | |
933 | * | |
934 | * The index of packet we get to drop is | |
935 | * the index of the packet following | |
936 | * the bad packet. -kbf | |
937 | */ | |
938 | { | |
939 | u16 index = rrpriv->evt_ring[eidx].index; | |
940 | index = (index + (RX_RING_ENTRIES - 1)) % | |
941 | RX_RING_ENTRIES; | |
942 | rrpriv->rx_ring[index].mode |= | |
943 | (PACKET_BAD | PACKET_END); | |
944 | } | |
945 | break; | |
946 | default: | |
947 | printk(KERN_WARNING "%s: Unhandled event 0x%02x\n", | |
948 | dev->name, rrpriv->evt_ring[eidx].code); | |
949 | } | |
950 | eidx = (eidx + 1) % EVT_RING_ENTRIES; | |
951 | } | |
952 | ||
953 | rrpriv->info->evt_ctrl.pi = eidx; | |
954 | wmb(); | |
955 | return eidx; | |
956 | } | |
957 | ||
958 | ||
959 | static void rx_int(struct net_device *dev, u32 rxlimit, u32 index) | |
960 | { | |
961 | struct rr_private *rrpriv = netdev_priv(dev); | |
962 | struct rr_regs __iomem *regs = rrpriv->regs; | |
963 | ||
964 | do { | |
965 | struct rx_desc *desc; | |
966 | u32 pkt_len; | |
967 | ||
968 | desc = &(rrpriv->rx_ring[index]); | |
969 | pkt_len = desc->size; | |
970 | #if (DEBUG > 2) | |
971 | printk("index %i, rxlimit %i\n", index, rxlimit); | |
972 | printk("len %x, mode %x\n", pkt_len, desc->mode); | |
973 | #endif | |
974 | if ( (rrpriv->rx_ring[index].mode & PACKET_BAD) == PACKET_BAD){ | |
09f75cd7 | 975 | dev->stats.rx_dropped++; |
1da177e4 LT |
976 | goto defer; |
977 | } | |
978 | ||
979 | if (pkt_len > 0){ | |
980 | struct sk_buff *skb, *rx_skb; | |
981 | ||
982 | rx_skb = rrpriv->rx_skbuff[index]; | |
983 | ||
984 | if (pkt_len < PKT_COPY_THRESHOLD) { | |
985 | skb = alloc_skb(pkt_len, GFP_ATOMIC); | |
986 | if (skb == NULL){ | |
987 | printk(KERN_WARNING "%s: Unable to allocate skb (%i bytes), deferring packet\n", dev->name, pkt_len); | |
09f75cd7 | 988 | dev->stats.rx_dropped++; |
1da177e4 LT |
989 | goto defer; |
990 | } else { | |
991 | pci_dma_sync_single_for_cpu(rrpriv->pci_dev, | |
992 | desc->addr.addrlo, | |
993 | pkt_len, | |
994 | PCI_DMA_FROMDEVICE); | |
995 | ||
996 | memcpy(skb_put(skb, pkt_len), | |
997 | rx_skb->data, pkt_len); | |
998 | ||
999 | pci_dma_sync_single_for_device(rrpriv->pci_dev, | |
1000 | desc->addr.addrlo, | |
1001 | pkt_len, | |
1002 | PCI_DMA_FROMDEVICE); | |
1003 | } | |
1004 | }else{ | |
1005 | struct sk_buff *newskb; | |
1006 | ||
1007 | newskb = alloc_skb(dev->mtu + HIPPI_HLEN, | |
1008 | GFP_ATOMIC); | |
1009 | if (newskb){ | |
1010 | dma_addr_t addr; | |
1011 | ||
6aa20a22 JG |
1012 | pci_unmap_single(rrpriv->pci_dev, |
1013 | desc->addr.addrlo, dev->mtu + | |
1da177e4 LT |
1014 | HIPPI_HLEN, PCI_DMA_FROMDEVICE); |
1015 | skb = rx_skb; | |
1016 | skb_put(skb, pkt_len); | |
1017 | rrpriv->rx_skbuff[index] = newskb; | |
6aa20a22 JG |
1018 | addr = pci_map_single(rrpriv->pci_dev, |
1019 | newskb->data, | |
1020 | dev->mtu + HIPPI_HLEN, | |
1da177e4 LT |
1021 | PCI_DMA_FROMDEVICE); |
1022 | set_rraddr(&desc->addr, addr); | |
1023 | } else { | |
1024 | printk("%s: Out of memory, deferring " | |
1025 | "packet\n", dev->name); | |
09f75cd7 | 1026 | dev->stats.rx_dropped++; |
1da177e4 LT |
1027 | goto defer; |
1028 | } | |
1029 | } | |
1da177e4 LT |
1030 | skb->protocol = hippi_type_trans(skb, dev); |
1031 | ||
1032 | netif_rx(skb); /* send it up */ | |
1033 | ||
1034 | dev->last_rx = jiffies; | |
09f75cd7 JG |
1035 | dev->stats.rx_packets++; |
1036 | dev->stats.rx_bytes += pkt_len; | |
1da177e4 LT |
1037 | } |
1038 | defer: | |
1039 | desc->mode = 0; | |
1040 | desc->size = dev->mtu + HIPPI_HLEN; | |
1041 | ||
1042 | if ((index & 7) == 7) | |
1043 | writel(index, ®s->IpRxPi); | |
1044 | ||
1045 | index = (index + 1) % RX_RING_ENTRIES; | |
1046 | } while(index != rxlimit); | |
1047 | ||
1048 | rrpriv->cur_rx = index; | |
1049 | wmb(); | |
1050 | } | |
1051 | ||
1052 | ||
7d12e780 | 1053 | static irqreturn_t rr_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1054 | { |
1055 | struct rr_private *rrpriv; | |
1056 | struct rr_regs __iomem *regs; | |
1057 | struct net_device *dev = (struct net_device *)dev_id; | |
1058 | u32 prodidx, rxindex, eidx, txcsmr, rxlimit, txcon; | |
1059 | ||
1060 | rrpriv = netdev_priv(dev); | |
1061 | regs = rrpriv->regs; | |
1062 | ||
1063 | if (!(readl(®s->HostCtrl) & RR_INT)) | |
1064 | return IRQ_NONE; | |
1065 | ||
1066 | spin_lock(&rrpriv->lock); | |
1067 | ||
1068 | prodidx = readl(®s->EvtPrd); | |
1069 | txcsmr = (prodidx >> 8) & 0xff; | |
1070 | rxlimit = (prodidx >> 16) & 0xff; | |
1071 | prodidx &= 0xff; | |
1072 | ||
1073 | #if (DEBUG > 2) | |
1074 | printk("%s: interrupt, prodidx = %i, eidx = %i\n", dev->name, | |
1075 | prodidx, rrpriv->info->evt_ctrl.pi); | |
1076 | #endif | |
1077 | /* | |
1078 | * Order here is important. We must handle events | |
1079 | * before doing anything else in order to catch | |
1080 | * such things as LLRC errors, etc -kbf | |
1081 | */ | |
1082 | ||
1083 | eidx = rrpriv->info->evt_ctrl.pi; | |
1084 | if (prodidx != eidx) | |
1085 | eidx = rr_handle_event(dev, prodidx, eidx); | |
1086 | ||
1087 | rxindex = rrpriv->cur_rx; | |
1088 | if (rxindex != rxlimit) | |
1089 | rx_int(dev, rxlimit, rxindex); | |
1090 | ||
1091 | txcon = rrpriv->dirty_tx; | |
1092 | if (txcsmr != txcon) { | |
1093 | do { | |
1094 | /* Due to occational firmware TX producer/consumer out | |
1095 | * of sync. error need to check entry in ring -kbf | |
1096 | */ | |
1097 | if(rrpriv->tx_skbuff[txcon]){ | |
1098 | struct tx_desc *desc; | |
1099 | struct sk_buff *skb; | |
1100 | ||
1101 | desc = &(rrpriv->tx_ring[txcon]); | |
1102 | skb = rrpriv->tx_skbuff[txcon]; | |
1103 | ||
09f75cd7 JG |
1104 | dev->stats.tx_packets++; |
1105 | dev->stats.tx_bytes += skb->len; | |
1da177e4 LT |
1106 | |
1107 | pci_unmap_single(rrpriv->pci_dev, | |
1108 | desc->addr.addrlo, skb->len, | |
1109 | PCI_DMA_TODEVICE); | |
1110 | dev_kfree_skb_irq(skb); | |
1111 | ||
1112 | rrpriv->tx_skbuff[txcon] = NULL; | |
1113 | desc->size = 0; | |
1114 | set_rraddr(&rrpriv->tx_ring[txcon].addr, 0); | |
1115 | desc->mode = 0; | |
1116 | } | |
1117 | txcon = (txcon + 1) % TX_RING_ENTRIES; | |
1118 | } while (txcsmr != txcon); | |
1119 | wmb(); | |
1120 | ||
1121 | rrpriv->dirty_tx = txcon; | |
1122 | if (rrpriv->tx_full && rr_if_busy(dev) && | |
1123 | (((rrpriv->info->tx_ctrl.pi + 1) % TX_RING_ENTRIES) | |
1124 | != rrpriv->dirty_tx)){ | |
1125 | rrpriv->tx_full = 0; | |
1126 | netif_wake_queue(dev); | |
1127 | } | |
1128 | } | |
1129 | ||
1130 | eidx |= ((txcsmr << 8) | (rxlimit << 16)); | |
1131 | writel(eidx, ®s->EvtCon); | |
1132 | wmb(); | |
1133 | ||
1134 | spin_unlock(&rrpriv->lock); | |
1135 | return IRQ_HANDLED; | |
1136 | } | |
1137 | ||
1138 | static inline void rr_raz_tx(struct rr_private *rrpriv, | |
1139 | struct net_device *dev) | |
1140 | { | |
1141 | int i; | |
1142 | ||
1143 | for (i = 0; i < TX_RING_ENTRIES; i++) { | |
1144 | struct sk_buff *skb = rrpriv->tx_skbuff[i]; | |
1145 | ||
1146 | if (skb) { | |
1147 | struct tx_desc *desc = &(rrpriv->tx_ring[i]); | |
1148 | ||
1149 | pci_unmap_single(rrpriv->pci_dev, desc->addr.addrlo, | |
1150 | skb->len, PCI_DMA_TODEVICE); | |
1151 | desc->size = 0; | |
1152 | set_rraddr(&desc->addr, 0); | |
1153 | dev_kfree_skb(skb); | |
1154 | rrpriv->tx_skbuff[i] = NULL; | |
1155 | } | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | ||
1160 | static inline void rr_raz_rx(struct rr_private *rrpriv, | |
1161 | struct net_device *dev) | |
1162 | { | |
1163 | int i; | |
1164 | ||
1165 | for (i = 0; i < RX_RING_ENTRIES; i++) { | |
1166 | struct sk_buff *skb = rrpriv->rx_skbuff[i]; | |
1167 | ||
1168 | if (skb) { | |
1169 | struct rx_desc *desc = &(rrpriv->rx_ring[i]); | |
1170 | ||
1171 | pci_unmap_single(rrpriv->pci_dev, desc->addr.addrlo, | |
1172 | dev->mtu + HIPPI_HLEN, PCI_DMA_FROMDEVICE); | |
1173 | desc->size = 0; | |
1174 | set_rraddr(&desc->addr, 0); | |
1175 | dev_kfree_skb(skb); | |
1176 | rrpriv->rx_skbuff[i] = NULL; | |
1177 | } | |
1178 | } | |
1179 | } | |
1180 | ||
1181 | static void rr_timer(unsigned long data) | |
1182 | { | |
1183 | struct net_device *dev = (struct net_device *)data; | |
1184 | struct rr_private *rrpriv = netdev_priv(dev); | |
1185 | struct rr_regs __iomem *regs = rrpriv->regs; | |
1186 | unsigned long flags; | |
1187 | ||
1188 | if (readl(®s->HostCtrl) & NIC_HALTED){ | |
1189 | printk("%s: Restarting nic\n", dev->name); | |
1190 | memset(rrpriv->rx_ctrl, 0, 256 * sizeof(struct ring_ctrl)); | |
1191 | memset(rrpriv->info, 0, sizeof(struct rr_info)); | |
1192 | wmb(); | |
1193 | ||
1194 | rr_raz_tx(rrpriv, dev); | |
1195 | rr_raz_rx(rrpriv, dev); | |
1196 | ||
1197 | if (rr_init1(dev)) { | |
1198 | spin_lock_irqsave(&rrpriv->lock, flags); | |
6aa20a22 | 1199 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
1200 | ®s->HostCtrl); |
1201 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1202 | } | |
1203 | } | |
1204 | rrpriv->timer.expires = RUN_AT(5*HZ); | |
1205 | add_timer(&rrpriv->timer); | |
1206 | } | |
1207 | ||
1208 | ||
1209 | static int rr_open(struct net_device *dev) | |
1210 | { | |
1211 | struct rr_private *rrpriv = netdev_priv(dev); | |
1212 | struct pci_dev *pdev = rrpriv->pci_dev; | |
1213 | struct rr_regs __iomem *regs; | |
1214 | int ecode = 0; | |
1215 | unsigned long flags; | |
1216 | dma_addr_t dma_addr; | |
1217 | ||
1218 | regs = rrpriv->regs; | |
1219 | ||
1220 | if (rrpriv->fw_rev < 0x00020000) { | |
1221 | printk(KERN_WARNING "%s: trying to configure device with " | |
1222 | "obsolete firmware\n", dev->name); | |
1223 | ecode = -EBUSY; | |
1224 | goto error; | |
1225 | } | |
1226 | ||
1227 | rrpriv->rx_ctrl = pci_alloc_consistent(pdev, | |
1228 | 256 * sizeof(struct ring_ctrl), | |
1229 | &dma_addr); | |
1230 | if (!rrpriv->rx_ctrl) { | |
1231 | ecode = -ENOMEM; | |
1232 | goto error; | |
1233 | } | |
1234 | rrpriv->rx_ctrl_dma = dma_addr; | |
1235 | memset(rrpriv->rx_ctrl, 0, 256*sizeof(struct ring_ctrl)); | |
1236 | ||
1237 | rrpriv->info = pci_alloc_consistent(pdev, sizeof(struct rr_info), | |
1238 | &dma_addr); | |
1239 | if (!rrpriv->info) { | |
1240 | ecode = -ENOMEM; | |
1241 | goto error; | |
1242 | } | |
1243 | rrpriv->info_dma = dma_addr; | |
1244 | memset(rrpriv->info, 0, sizeof(struct rr_info)); | |
1245 | wmb(); | |
1246 | ||
1247 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1248 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, ®s->HostCtrl); | |
1249 | readl(®s->HostCtrl); | |
1250 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1251 | ||
1fb9df5d | 1252 | if (request_irq(dev->irq, rr_interrupt, IRQF_SHARED, dev->name, dev)) { |
1da177e4 LT |
1253 | printk(KERN_WARNING "%s: Requested IRQ %d is busy\n", |
1254 | dev->name, dev->irq); | |
1255 | ecode = -EAGAIN; | |
1256 | goto error; | |
1257 | } | |
1258 | ||
1259 | if ((ecode = rr_init1(dev))) | |
1260 | goto error; | |
1261 | ||
1262 | /* Set the timer to switch to check for link beat and perhaps switch | |
1263 | to an alternate media type. */ | |
1264 | init_timer(&rrpriv->timer); | |
1265 | rrpriv->timer.expires = RUN_AT(5*HZ); /* 5 sec. watchdog */ | |
1266 | rrpriv->timer.data = (unsigned long)dev; | |
1267 | rrpriv->timer.function = &rr_timer; /* timer handler */ | |
1268 | add_timer(&rrpriv->timer); | |
1269 | ||
1270 | netif_start_queue(dev); | |
1271 | ||
1272 | return ecode; | |
1273 | ||
1274 | error: | |
1275 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1276 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, ®s->HostCtrl); | |
1277 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1278 | ||
1279 | if (rrpriv->info) { | |
1280 | pci_free_consistent(pdev, sizeof(struct rr_info), rrpriv->info, | |
1281 | rrpriv->info_dma); | |
1282 | rrpriv->info = NULL; | |
1283 | } | |
1284 | if (rrpriv->rx_ctrl) { | |
1285 | pci_free_consistent(pdev, sizeof(struct ring_ctrl), | |
1286 | rrpriv->rx_ctrl, rrpriv->rx_ctrl_dma); | |
1287 | rrpriv->rx_ctrl = NULL; | |
1288 | } | |
1289 | ||
1290 | netif_stop_queue(dev); | |
6aa20a22 | 1291 | |
1da177e4 LT |
1292 | return ecode; |
1293 | } | |
1294 | ||
1295 | ||
1296 | static void rr_dump(struct net_device *dev) | |
1297 | { | |
1298 | struct rr_private *rrpriv; | |
1299 | struct rr_regs __iomem *regs; | |
1300 | u32 index, cons; | |
1301 | short i; | |
1302 | int len; | |
1303 | ||
1304 | rrpriv = netdev_priv(dev); | |
1305 | regs = rrpriv->regs; | |
1306 | ||
1307 | printk("%s: dumping NIC TX rings\n", dev->name); | |
1308 | ||
1309 | printk("RxPrd %08x, TxPrd %02x, EvtPrd %08x, TxPi %02x, TxCtrlPi %02x\n", | |
1310 | readl(®s->RxPrd), readl(®s->TxPrd), | |
1311 | readl(®s->EvtPrd), readl(®s->TxPi), | |
1312 | rrpriv->info->tx_ctrl.pi); | |
1313 | ||
1314 | printk("Error code 0x%x\n", readl(®s->Fail1)); | |
1315 | ||
1316 | index = (((readl(®s->EvtPrd) >> 8) & 0xff ) - 1) % EVT_RING_ENTRIES; | |
1317 | cons = rrpriv->dirty_tx; | |
1318 | printk("TX ring index %i, TX consumer %i\n", | |
1319 | index, cons); | |
1320 | ||
1321 | if (rrpriv->tx_skbuff[index]){ | |
1322 | len = min_t(int, 0x80, rrpriv->tx_skbuff[index]->len); | |
1323 | printk("skbuff for index %i is valid - dumping data (0x%x bytes - DMA len 0x%x)\n", index, len, rrpriv->tx_ring[index].size); | |
1324 | for (i = 0; i < len; i++){ | |
1325 | if (!(i & 7)) | |
1326 | printk("\n"); | |
1327 | printk("%02x ", (unsigned char) rrpriv->tx_skbuff[index]->data[i]); | |
1328 | } | |
1329 | printk("\n"); | |
1330 | } | |
1331 | ||
1332 | if (rrpriv->tx_skbuff[cons]){ | |
1333 | len = min_t(int, 0x80, rrpriv->tx_skbuff[cons]->len); | |
1334 | printk("skbuff for cons %i is valid - dumping data (0x%x bytes - skbuff len 0x%x)\n", cons, len, rrpriv->tx_skbuff[cons]->len); | |
1335 | printk("mode 0x%x, size 0x%x,\n phys %08Lx, skbuff-addr %08lx, truesize 0x%x\n", | |
1336 | rrpriv->tx_ring[cons].mode, | |
1337 | rrpriv->tx_ring[cons].size, | |
1338 | (unsigned long long) rrpriv->tx_ring[cons].addr.addrlo, | |
1339 | (unsigned long)rrpriv->tx_skbuff[cons]->data, | |
1340 | (unsigned int)rrpriv->tx_skbuff[cons]->truesize); | |
1341 | for (i = 0; i < len; i++){ | |
1342 | if (!(i & 7)) | |
1343 | printk("\n"); | |
1344 | printk("%02x ", (unsigned char)rrpriv->tx_ring[cons].size); | |
1345 | } | |
1346 | printk("\n"); | |
1347 | } | |
1348 | ||
1349 | printk("dumping TX ring info:\n"); | |
1350 | for (i = 0; i < TX_RING_ENTRIES; i++) | |
1351 | printk("mode 0x%x, size 0x%x, phys-addr %08Lx\n", | |
1352 | rrpriv->tx_ring[i].mode, | |
1353 | rrpriv->tx_ring[i].size, | |
1354 | (unsigned long long) rrpriv->tx_ring[i].addr.addrlo); | |
1355 | ||
1356 | } | |
1357 | ||
1358 | ||
1359 | static int rr_close(struct net_device *dev) | |
1360 | { | |
1361 | struct rr_private *rrpriv; | |
1362 | struct rr_regs __iomem *regs; | |
1363 | unsigned long flags; | |
1364 | u32 tmp; | |
1365 | short i; | |
1366 | ||
1367 | netif_stop_queue(dev); | |
1368 | ||
1369 | rrpriv = netdev_priv(dev); | |
1370 | regs = rrpriv->regs; | |
1371 | ||
1372 | /* | |
1373 | * Lock to make sure we are not cleaning up while another CPU | |
1374 | * is handling interrupts. | |
1375 | */ | |
1376 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1377 | ||
1378 | tmp = readl(®s->HostCtrl); | |
1379 | if (tmp & NIC_HALTED){ | |
1380 | printk("%s: NIC already halted\n", dev->name); | |
1381 | rr_dump(dev); | |
1382 | }else{ | |
1383 | tmp |= HALT_NIC | RR_CLEAR_INT; | |
1384 | writel(tmp, ®s->HostCtrl); | |
1385 | readl(®s->HostCtrl); | |
1386 | } | |
1387 | ||
1388 | rrpriv->fw_running = 0; | |
1389 | ||
1390 | del_timer_sync(&rrpriv->timer); | |
1391 | ||
1392 | writel(0, ®s->TxPi); | |
1393 | writel(0, ®s->IpRxPi); | |
1394 | ||
1395 | writel(0, ®s->EvtCon); | |
1396 | writel(0, ®s->EvtPrd); | |
1397 | ||
1398 | for (i = 0; i < CMD_RING_ENTRIES; i++) | |
1399 | writel(0, ®s->CmdRing[i]); | |
1400 | ||
1401 | rrpriv->info->tx_ctrl.entries = 0; | |
1402 | rrpriv->info->cmd_ctrl.pi = 0; | |
1403 | rrpriv->info->evt_ctrl.pi = 0; | |
1404 | rrpriv->rx_ctrl[4].entries = 0; | |
1405 | ||
1406 | rr_raz_tx(rrpriv, dev); | |
1407 | rr_raz_rx(rrpriv, dev); | |
1408 | ||
1409 | pci_free_consistent(rrpriv->pci_dev, 256 * sizeof(struct ring_ctrl), | |
1410 | rrpriv->rx_ctrl, rrpriv->rx_ctrl_dma); | |
1411 | rrpriv->rx_ctrl = NULL; | |
1412 | ||
1413 | pci_free_consistent(rrpriv->pci_dev, sizeof(struct rr_info), | |
1414 | rrpriv->info, rrpriv->info_dma); | |
1415 | rrpriv->info = NULL; | |
1416 | ||
1417 | free_irq(dev->irq, dev); | |
1418 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1419 | ||
1420 | return 0; | |
1421 | } | |
1422 | ||
1423 | ||
1424 | static int rr_start_xmit(struct sk_buff *skb, struct net_device *dev) | |
1425 | { | |
1426 | struct rr_private *rrpriv = netdev_priv(dev); | |
1427 | struct rr_regs __iomem *regs = rrpriv->regs; | |
6f1cf165 | 1428 | struct hippi_cb *hcb = (struct hippi_cb *) skb->cb; |
1da177e4 LT |
1429 | struct ring_ctrl *txctrl; |
1430 | unsigned long flags; | |
1431 | u32 index, len = skb->len; | |
1432 | u32 *ifield; | |
1433 | struct sk_buff *new_skb; | |
1434 | ||
1435 | if (readl(®s->Mode) & FATAL_ERR) | |
1436 | printk("error codes Fail1 %02x, Fail2 %02x\n", | |
1437 | readl(®s->Fail1), readl(®s->Fail2)); | |
1438 | ||
1439 | /* | |
1440 | * We probably need to deal with tbusy here to prevent overruns. | |
1441 | */ | |
1442 | ||
1443 | if (skb_headroom(skb) < 8){ | |
1444 | printk("incoming skb too small - reallocating\n"); | |
1445 | if (!(new_skb = dev_alloc_skb(len + 8))) { | |
1446 | dev_kfree_skb(skb); | |
1447 | netif_wake_queue(dev); | |
1448 | return -EBUSY; | |
1449 | } | |
1450 | skb_reserve(new_skb, 8); | |
1451 | skb_put(new_skb, len); | |
d626f62b | 1452 | skb_copy_from_linear_data(skb, new_skb->data, len); |
1da177e4 LT |
1453 | dev_kfree_skb(skb); |
1454 | skb = new_skb; | |
1455 | } | |
1456 | ||
1457 | ifield = (u32 *)skb_push(skb, 8); | |
1458 | ||
1459 | ifield[0] = 0; | |
6f1cf165 | 1460 | ifield[1] = hcb->ifield; |
1da177e4 LT |
1461 | |
1462 | /* | |
1463 | * We don't need the lock before we are actually going to start | |
1464 | * fiddling with the control blocks. | |
1465 | */ | |
1466 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1467 | ||
1468 | txctrl = &rrpriv->info->tx_ctrl; | |
1469 | ||
1470 | index = txctrl->pi; | |
1471 | ||
1472 | rrpriv->tx_skbuff[index] = skb; | |
1473 | set_rraddr(&rrpriv->tx_ring[index].addr, pci_map_single( | |
1474 | rrpriv->pci_dev, skb->data, len + 8, PCI_DMA_TODEVICE)); | |
1475 | rrpriv->tx_ring[index].size = len + 8; /* include IFIELD */ | |
1476 | rrpriv->tx_ring[index].mode = PACKET_START | PACKET_END; | |
1477 | txctrl->pi = (index + 1) % TX_RING_ENTRIES; | |
1478 | wmb(); | |
1479 | writel(txctrl->pi, ®s->TxPi); | |
1480 | ||
1481 | if (txctrl->pi == rrpriv->dirty_tx){ | |
1482 | rrpriv->tx_full = 1; | |
1483 | netif_stop_queue(dev); | |
1484 | } | |
1485 | ||
1486 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1487 | ||
1488 | dev->trans_start = jiffies; | |
1489 | return 0; | |
1490 | } | |
1491 | ||
1492 | ||
1da177e4 LT |
1493 | /* |
1494 | * Read the firmware out of the EEPROM and put it into the SRAM | |
1495 | * (or from user space - later) | |
1496 | * | |
1497 | * This operation requires the NIC to be halted and is performed with | |
1498 | * interrupts disabled and with the spinlock hold. | |
1499 | */ | |
1500 | static int rr_load_firmware(struct net_device *dev) | |
1501 | { | |
1502 | struct rr_private *rrpriv; | |
1503 | struct rr_regs __iomem *regs; | |
1504 | unsigned long eptr, segptr; | |
1505 | int i, j; | |
1506 | u32 localctrl, sptr, len, tmp; | |
1507 | u32 p2len, p2size, nr_seg, revision, io, sram_size; | |
1508 | struct eeprom *hw = NULL; | |
1509 | ||
1510 | rrpriv = netdev_priv(dev); | |
1511 | regs = rrpriv->regs; | |
1512 | ||
1513 | if (dev->flags & IFF_UP) | |
1514 | return -EBUSY; | |
1515 | ||
1516 | if (!(readl(®s->HostCtrl) & NIC_HALTED)){ | |
6aa20a22 | 1517 | printk("%s: Trying to load firmware to a running NIC.\n", |
1da177e4 LT |
1518 | dev->name); |
1519 | return -EBUSY; | |
1520 | } | |
1521 | ||
1522 | localctrl = readl(®s->LocalCtrl); | |
1523 | writel(0, ®s->LocalCtrl); | |
1524 | ||
1525 | writel(0, ®s->EvtPrd); | |
1526 | writel(0, ®s->RxPrd); | |
1527 | writel(0, ®s->TxPrd); | |
1528 | ||
1529 | /* | |
1530 | * First wipe the entire SRAM, otherwise we might run into all | |
1531 | * kinds of trouble ... sigh, this took almost all afternoon | |
1532 | * to track down ;-( | |
1533 | */ | |
1534 | io = readl(®s->ExtIo); | |
1535 | writel(0, ®s->ExtIo); | |
1536 | sram_size = rr_read_eeprom_word(rrpriv, (void *)8); | |
1537 | ||
1538 | for (i = 200; i < sram_size / 4; i++){ | |
1539 | writel(i * 4, ®s->WinBase); | |
1540 | mb(); | |
1541 | writel(0, ®s->WinData); | |
1542 | mb(); | |
1543 | } | |
1544 | writel(io, ®s->ExtIo); | |
1545 | mb(); | |
1546 | ||
1547 | eptr = (unsigned long)rr_read_eeprom_word(rrpriv, | |
1548 | &hw->rncd_info.AddrRunCodeSegs); | |
1549 | eptr = ((eptr & 0x1fffff) >> 3); | |
1550 | ||
1551 | p2len = rr_read_eeprom_word(rrpriv, (void *)(0x83*4)); | |
1552 | p2len = (p2len << 2); | |
1553 | p2size = rr_read_eeprom_word(rrpriv, (void *)(0x84*4)); | |
1554 | p2size = ((p2size & 0x1fffff) >> 3); | |
1555 | ||
1556 | if ((eptr < p2size) || (eptr > (p2size + p2len))){ | |
1557 | printk("%s: eptr is invalid\n", dev->name); | |
1558 | goto out; | |
1559 | } | |
1560 | ||
1561 | revision = rr_read_eeprom_word(rrpriv, &hw->manf.HeaderFmt); | |
1562 | ||
1563 | if (revision != 1){ | |
1564 | printk("%s: invalid firmware format (%i)\n", | |
1565 | dev->name, revision); | |
1566 | goto out; | |
1567 | } | |
1568 | ||
1569 | nr_seg = rr_read_eeprom_word(rrpriv, (void *)eptr); | |
1570 | eptr +=4; | |
1571 | #if (DEBUG > 1) | |
1572 | printk("%s: nr_seg %i\n", dev->name, nr_seg); | |
1573 | #endif | |
1574 | ||
1575 | for (i = 0; i < nr_seg; i++){ | |
1576 | sptr = rr_read_eeprom_word(rrpriv, (void *)eptr); | |
1577 | eptr += 4; | |
1578 | len = rr_read_eeprom_word(rrpriv, (void *)eptr); | |
1579 | eptr += 4; | |
1580 | segptr = (unsigned long)rr_read_eeprom_word(rrpriv, (void *)eptr); | |
1581 | segptr = ((segptr & 0x1fffff) >> 3); | |
1582 | eptr += 4; | |
1583 | #if (DEBUG > 1) | |
1584 | printk("%s: segment %i, sram address %06x, length %04x, segptr %06x\n", | |
1585 | dev->name, i, sptr, len, segptr); | |
1586 | #endif | |
1587 | for (j = 0; j < len; j++){ | |
1588 | tmp = rr_read_eeprom_word(rrpriv, (void *)segptr); | |
1589 | writel(sptr, ®s->WinBase); | |
1590 | mb(); | |
1591 | writel(tmp, ®s->WinData); | |
1592 | mb(); | |
1593 | segptr += 4; | |
1594 | sptr += 4; | |
1595 | } | |
1596 | } | |
1597 | ||
1598 | out: | |
1599 | writel(localctrl, ®s->LocalCtrl); | |
1600 | mb(); | |
1601 | return 0; | |
1602 | } | |
1603 | ||
1604 | ||
1605 | static int rr_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1606 | { | |
1607 | struct rr_private *rrpriv; | |
1608 | unsigned char *image, *oldimage; | |
1609 | unsigned long flags; | |
1610 | unsigned int i; | |
1611 | int error = -EOPNOTSUPP; | |
1612 | ||
1613 | rrpriv = netdev_priv(dev); | |
1614 | ||
1615 | switch(cmd){ | |
1616 | case SIOCRRGFW: | |
1617 | if (!capable(CAP_SYS_RAWIO)){ | |
1618 | return -EPERM; | |
1619 | } | |
1620 | ||
1621 | image = kmalloc(EEPROM_WORDS * sizeof(u32), GFP_KERNEL); | |
1622 | if (!image){ | |
1623 | printk(KERN_ERR "%s: Unable to allocate memory " | |
1624 | "for EEPROM image\n", dev->name); | |
1625 | return -ENOMEM; | |
1626 | } | |
1627 | ||
1628 | ||
1629 | if (rrpriv->fw_running){ | |
1630 | printk("%s: Firmware already running\n", dev->name); | |
1631 | error = -EPERM; | |
1632 | goto gf_out; | |
1633 | } | |
1634 | ||
1635 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1636 | i = rr_read_eeprom(rrpriv, 0, image, EEPROM_BYTES); | |
1637 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1638 | if (i != EEPROM_BYTES){ | |
1639 | printk(KERN_ERR "%s: Error reading EEPROM\n", | |
1640 | dev->name); | |
1641 | error = -EFAULT; | |
1642 | goto gf_out; | |
1643 | } | |
1644 | error = copy_to_user(rq->ifr_data, image, EEPROM_BYTES); | |
1645 | if (error) | |
1646 | error = -EFAULT; | |
1647 | gf_out: | |
1648 | kfree(image); | |
1649 | return error; | |
6aa20a22 | 1650 | |
1da177e4 LT |
1651 | case SIOCRRPFW: |
1652 | if (!capable(CAP_SYS_RAWIO)){ | |
1653 | return -EPERM; | |
1654 | } | |
1655 | ||
1656 | image = kmalloc(EEPROM_WORDS * sizeof(u32), GFP_KERNEL); | |
1657 | oldimage = kmalloc(EEPROM_WORDS * sizeof(u32), GFP_KERNEL); | |
1658 | if (!image || !oldimage) { | |
1659 | printk(KERN_ERR "%s: Unable to allocate memory " | |
1660 | "for EEPROM image\n", dev->name); | |
1661 | error = -ENOMEM; | |
1662 | goto wf_out; | |
1663 | } | |
1664 | ||
1665 | error = copy_from_user(image, rq->ifr_data, EEPROM_BYTES); | |
1666 | if (error) { | |
1667 | error = -EFAULT; | |
1668 | goto wf_out; | |
1669 | } | |
1670 | ||
1671 | if (rrpriv->fw_running){ | |
1672 | printk("%s: Firmware already running\n", dev->name); | |
1673 | error = -EPERM; | |
1674 | goto wf_out; | |
1675 | } | |
1676 | ||
1677 | printk("%s: Updating EEPROM firmware\n", dev->name); | |
1678 | ||
1679 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1680 | error = write_eeprom(rrpriv, 0, image, EEPROM_BYTES); | |
1681 | if (error) | |
1682 | printk(KERN_ERR "%s: Error writing EEPROM\n", | |
1683 | dev->name); | |
1684 | ||
1685 | i = rr_read_eeprom(rrpriv, 0, oldimage, EEPROM_BYTES); | |
1686 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1687 | ||
1688 | if (i != EEPROM_BYTES) | |
1689 | printk(KERN_ERR "%s: Error reading back EEPROM " | |
1690 | "image\n", dev->name); | |
1691 | ||
1692 | error = memcmp(image, oldimage, EEPROM_BYTES); | |
1693 | if (error){ | |
1694 | printk(KERN_ERR "%s: Error verifying EEPROM image\n", | |
1695 | dev->name); | |
1696 | error = -EFAULT; | |
1697 | } | |
1698 | wf_out: | |
b4558ea9 JJ |
1699 | kfree(oldimage); |
1700 | kfree(image); | |
1da177e4 | 1701 | return error; |
6aa20a22 | 1702 | |
1da177e4 LT |
1703 | case SIOCRRID: |
1704 | return put_user(0x52523032, (int __user *)rq->ifr_data); | |
1705 | default: | |
1706 | return error; | |
1707 | } | |
1708 | } | |
1709 | ||
1710 | static struct pci_device_id rr_pci_tbl[] = { | |
1711 | { PCI_VENDOR_ID_ESSENTIAL, PCI_DEVICE_ID_ESSENTIAL_ROADRUNNER, | |
1712 | PCI_ANY_ID, PCI_ANY_ID, }, | |
1713 | { 0,} | |
1714 | }; | |
1715 | MODULE_DEVICE_TABLE(pci, rr_pci_tbl); | |
1716 | ||
1717 | static struct pci_driver rr_driver = { | |
1718 | .name = "rrunner", | |
1719 | .id_table = rr_pci_tbl, | |
1720 | .probe = rr_init_one, | |
1721 | .remove = __devexit_p(rr_remove_one), | |
1722 | }; | |
1723 | ||
1724 | static int __init rr_init_module(void) | |
1725 | { | |
29917620 | 1726 | return pci_register_driver(&rr_driver); |
1da177e4 LT |
1727 | } |
1728 | ||
1729 | static void __exit rr_cleanup_module(void) | |
1730 | { | |
1731 | pci_unregister_driver(&rr_driver); | |
1732 | } | |
1733 | ||
1734 | module_init(rr_init_module); | |
1735 | module_exit(rr_cleanup_module); | |
1736 | ||
1737 | /* | |
1738 | * Local variables: | |
1739 | * compile-command: "gcc -D__KERNEL__ -I../../include -Wall -Wstrict-prototypes -O2 -pipe -fomit-frame-pointer -fno-strength-reduce -m486 -malign-loops=2 -malign-jumps=2 -malign-functions=2 -DMODULE -DMODVERSIONS -include ../../include/linux/modversions.h -c rrunner.c" | |
1740 | * End: | |
1741 | */ |