Commit | Line | Data |
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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> | |
5a0e3ad6 | 43 | #include <linux/slab.h> |
1da177e4 LT |
44 | #include <net/sock.h> |
45 | ||
1da177e4 LT |
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 | ||
748ff68f SH |
66 | |
67 | static const struct net_device_ops rr_netdev_ops = { | |
68 | .ndo_open = rr_open, | |
69 | .ndo_stop = rr_close, | |
70 | .ndo_do_ioctl = rr_ioctl, | |
71 | .ndo_start_xmit = rr_start_xmit, | |
72 | .ndo_change_mtu = hippi_change_mtu, | |
73 | .ndo_set_mac_address = hippi_mac_addr, | |
74 | }; | |
75 | ||
1da177e4 LT |
76 | /* |
77 | * Implementation notes: | |
78 | * | |
79 | * The DMA engine only allows for DMA within physical 64KB chunks of | |
80 | * memory. The current approach of the driver (and stack) is to use | |
81 | * linear blocks of memory for the skbuffs. However, as the data block | |
82 | * is always the first part of the skb and skbs are 2^n aligned so we | |
83 | * are guarantted to get the whole block within one 64KB align 64KB | |
84 | * chunk. | |
85 | * | |
86 | * On the long term, relying on being able to allocate 64KB linear | |
87 | * chunks of memory is not feasible and the skb handling code and the | |
88 | * stack will need to know about I/O vectors or something similar. | |
89 | */ | |
90 | ||
1da177e4 LT |
91 | static int __devinit rr_init_one(struct pci_dev *pdev, |
92 | const struct pci_device_id *ent) | |
93 | { | |
94 | struct net_device *dev; | |
95 | static int version_disp; | |
96 | u8 pci_latency; | |
97 | struct rr_private *rrpriv; | |
98 | void *tmpptr; | |
99 | dma_addr_t ring_dma; | |
100 | int ret = -ENOMEM; | |
101 | ||
102 | dev = alloc_hippi_dev(sizeof(struct rr_private)); | |
103 | if (!dev) | |
104 | goto out3; | |
105 | ||
106 | ret = pci_enable_device(pdev); | |
107 | if (ret) { | |
108 | ret = -ENODEV; | |
109 | goto out2; | |
110 | } | |
111 | ||
112 | rrpriv = netdev_priv(dev); | |
113 | ||
1da177e4 LT |
114 | SET_NETDEV_DEV(dev, &pdev->dev); |
115 | ||
0193fc5e FR |
116 | ret = pci_request_regions(pdev, "rrunner"); |
117 | if (ret < 0) | |
1da177e4 | 118 | goto out; |
1da177e4 LT |
119 | |
120 | pci_set_drvdata(pdev, dev); | |
121 | ||
122 | rrpriv->pci_dev = pdev; | |
123 | ||
124 | spin_lock_init(&rrpriv->lock); | |
125 | ||
748ff68f | 126 | dev->netdev_ops = &rr_netdev_ops; |
1da177e4 | 127 | |
1da177e4 LT |
128 | /* display version info if adapter is found */ |
129 | if (!version_disp) { | |
130 | /* set display flag to TRUE so that */ | |
131 | /* we only display this string ONCE */ | |
132 | version_disp = 1; | |
133 | printk(version); | |
134 | } | |
135 | ||
136 | pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency); | |
137 | if (pci_latency <= 0x58){ | |
138 | pci_latency = 0x58; | |
139 | pci_write_config_byte(pdev, PCI_LATENCY_TIMER, pci_latency); | |
140 | } | |
141 | ||
142 | pci_set_master(pdev); | |
143 | ||
144 | printk(KERN_INFO "%s: Essential RoadRunner serial HIPPI " | |
ecffe75f RD |
145 | "at 0x%llx, irq %i, PCI latency %i\n", dev->name, |
146 | (unsigned long long)pci_resource_start(pdev, 0), | |
147 | pdev->irq, pci_latency); | |
1da177e4 LT |
148 | |
149 | /* | |
0193fc5e | 150 | * Remap the MMIO regs into kernel space. |
1da177e4 | 151 | */ |
0193fc5e FR |
152 | rrpriv->regs = pci_iomap(pdev, 0, 0x1000); |
153 | if (!rrpriv->regs) { | |
1da177e4 LT |
154 | printk(KERN_ERR "%s: Unable to map I/O register, " |
155 | "RoadRunner will be disabled.\n", dev->name); | |
156 | ret = -EIO; | |
157 | goto out; | |
158 | } | |
159 | ||
160 | tmpptr = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma); | |
161 | rrpriv->tx_ring = tmpptr; | |
162 | rrpriv->tx_ring_dma = ring_dma; | |
163 | ||
164 | if (!tmpptr) { | |
165 | ret = -ENOMEM; | |
166 | goto out; | |
167 | } | |
168 | ||
169 | tmpptr = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma); | |
170 | rrpriv->rx_ring = tmpptr; | |
171 | rrpriv->rx_ring_dma = ring_dma; | |
172 | ||
173 | if (!tmpptr) { | |
174 | ret = -ENOMEM; | |
175 | goto out; | |
176 | } | |
177 | ||
178 | tmpptr = pci_alloc_consistent(pdev, EVT_RING_SIZE, &ring_dma); | |
179 | rrpriv->evt_ring = tmpptr; | |
180 | rrpriv->evt_ring_dma = ring_dma; | |
181 | ||
182 | if (!tmpptr) { | |
183 | ret = -ENOMEM; | |
184 | goto out; | |
185 | } | |
186 | ||
187 | /* | |
188 | * Don't access any register before this point! | |
189 | */ | |
190 | #ifdef __BIG_ENDIAN | |
191 | writel(readl(&rrpriv->regs->HostCtrl) | NO_SWAP, | |
192 | &rrpriv->regs->HostCtrl); | |
193 | #endif | |
194 | /* | |
195 | * Need to add a case for little-endian 64-bit hosts here. | |
196 | */ | |
197 | ||
198 | rr_init(dev); | |
199 | ||
1da177e4 LT |
200 | ret = register_netdev(dev); |
201 | if (ret) | |
202 | goto out; | |
203 | return 0; | |
204 | ||
205 | out: | |
206 | if (rrpriv->rx_ring) | |
6aa20a22 | 207 | pci_free_consistent(pdev, RX_TOTAL_SIZE, rrpriv->rx_ring, |
1da177e4 LT |
208 | rrpriv->rx_ring_dma); |
209 | if (rrpriv->tx_ring) | |
210 | pci_free_consistent(pdev, TX_TOTAL_SIZE, rrpriv->tx_ring, | |
211 | rrpriv->tx_ring_dma); | |
212 | if (rrpriv->regs) | |
0193fc5e | 213 | pci_iounmap(pdev, rrpriv->regs); |
1da177e4 LT |
214 | if (pdev) { |
215 | pci_release_regions(pdev); | |
216 | pci_set_drvdata(pdev, NULL); | |
217 | } | |
218 | out2: | |
219 | free_netdev(dev); | |
220 | out3: | |
221 | return ret; | |
222 | } | |
223 | ||
224 | static void __devexit rr_remove_one (struct pci_dev *pdev) | |
225 | { | |
226 | struct net_device *dev = pci_get_drvdata(pdev); | |
0193fc5e | 227 | struct rr_private *rr = netdev_priv(dev); |
1da177e4 | 228 | |
0193fc5e FR |
229 | if (!(readl(&rr->regs->HostCtrl) & NIC_HALTED)) { |
230 | printk(KERN_ERR "%s: trying to unload running NIC\n", | |
231 | dev->name); | |
232 | writel(HALT_NIC, &rr->regs->HostCtrl); | |
1da177e4 | 233 | } |
0193fc5e FR |
234 | |
235 | unregister_netdev(dev); | |
236 | pci_free_consistent(pdev, EVT_RING_SIZE, rr->evt_ring, | |
237 | rr->evt_ring_dma); | |
238 | pci_free_consistent(pdev, RX_TOTAL_SIZE, rr->rx_ring, | |
239 | rr->rx_ring_dma); | |
240 | pci_free_consistent(pdev, TX_TOTAL_SIZE, rr->tx_ring, | |
241 | rr->tx_ring_dma); | |
242 | pci_iounmap(pdev, rr->regs); | |
243 | pci_release_regions(pdev); | |
244 | pci_disable_device(pdev); | |
245 | pci_set_drvdata(pdev, NULL); | |
246 | free_netdev(dev); | |
1da177e4 LT |
247 | } |
248 | ||
249 | ||
250 | /* | |
251 | * Commands are considered to be slow, thus there is no reason to | |
252 | * inline this. | |
253 | */ | |
254 | static void rr_issue_cmd(struct rr_private *rrpriv, struct cmd *cmd) | |
255 | { | |
256 | struct rr_regs __iomem *regs; | |
257 | u32 idx; | |
258 | ||
259 | regs = rrpriv->regs; | |
260 | /* | |
261 | * This is temporary - it will go away in the final version. | |
262 | * We probably also want to make this function inline. | |
263 | */ | |
264 | if (readl(®s->HostCtrl) & NIC_HALTED){ | |
265 | printk("issuing command for halted NIC, code 0x%x, " | |
266 | "HostCtrl %08x\n", cmd->code, readl(®s->HostCtrl)); | |
267 | if (readl(®s->Mode) & FATAL_ERR) | |
268 | printk("error codes Fail1 %02x, Fail2 %02x\n", | |
269 | readl(®s->Fail1), readl(®s->Fail2)); | |
270 | } | |
271 | ||
272 | idx = rrpriv->info->cmd_ctrl.pi; | |
273 | ||
274 | writel(*(u32*)(cmd), ®s->CmdRing[idx]); | |
275 | wmb(); | |
276 | ||
277 | idx = (idx - 1) % CMD_RING_ENTRIES; | |
278 | rrpriv->info->cmd_ctrl.pi = idx; | |
279 | wmb(); | |
280 | ||
281 | if (readl(®s->Mode) & FATAL_ERR) | |
282 | printk("error code %02x\n", readl(®s->Fail1)); | |
283 | } | |
284 | ||
285 | ||
286 | /* | |
287 | * Reset the board in a sensible manner. The NIC is already halted | |
288 | * when we get here and a spin-lock is held. | |
289 | */ | |
290 | static int rr_reset(struct net_device *dev) | |
291 | { | |
292 | struct rr_private *rrpriv; | |
293 | struct rr_regs __iomem *regs; | |
1da177e4 LT |
294 | u32 start_pc; |
295 | int i; | |
296 | ||
297 | rrpriv = netdev_priv(dev); | |
298 | regs = rrpriv->regs; | |
299 | ||
300 | rr_load_firmware(dev); | |
301 | ||
302 | writel(0x01000000, ®s->TX_state); | |
303 | writel(0xff800000, ®s->RX_state); | |
304 | writel(0, ®s->AssistState); | |
305 | writel(CLEAR_INTA, ®s->LocalCtrl); | |
306 | writel(0x01, ®s->BrkPt); | |
307 | writel(0, ®s->Timer); | |
308 | writel(0, ®s->TimerRef); | |
309 | writel(RESET_DMA, ®s->DmaReadState); | |
310 | writel(RESET_DMA, ®s->DmaWriteState); | |
311 | writel(0, ®s->DmaWriteHostHi); | |
312 | writel(0, ®s->DmaWriteHostLo); | |
313 | writel(0, ®s->DmaReadHostHi); | |
314 | writel(0, ®s->DmaReadHostLo); | |
315 | writel(0, ®s->DmaReadLen); | |
316 | writel(0, ®s->DmaWriteLen); | |
317 | writel(0, ®s->DmaWriteLcl); | |
318 | writel(0, ®s->DmaWriteIPchecksum); | |
319 | writel(0, ®s->DmaReadLcl); | |
320 | writel(0, ®s->DmaReadIPchecksum); | |
321 | writel(0, ®s->PciState); | |
322 | #if (BITS_PER_LONG == 64) && defined __LITTLE_ENDIAN | |
323 | writel(SWAP_DATA | PTR64BIT | PTR_WD_SWAP, ®s->Mode); | |
324 | #elif (BITS_PER_LONG == 64) | |
325 | writel(SWAP_DATA | PTR64BIT | PTR_WD_NOSWAP, ®s->Mode); | |
326 | #else | |
327 | writel(SWAP_DATA | PTR32BIT | PTR_WD_NOSWAP, ®s->Mode); | |
328 | #endif | |
329 | ||
330 | #if 0 | |
331 | /* | |
332 | * Don't worry, this is just black magic. | |
333 | */ | |
334 | writel(0xdf000, ®s->RxBase); | |
335 | writel(0xdf000, ®s->RxPrd); | |
336 | writel(0xdf000, ®s->RxCon); | |
337 | writel(0xce000, ®s->TxBase); | |
338 | writel(0xce000, ®s->TxPrd); | |
339 | writel(0xce000, ®s->TxCon); | |
340 | writel(0, ®s->RxIndPro); | |
341 | writel(0, ®s->RxIndCon); | |
342 | writel(0, ®s->RxIndRef); | |
343 | writel(0, ®s->TxIndPro); | |
344 | writel(0, ®s->TxIndCon); | |
345 | writel(0, ®s->TxIndRef); | |
346 | writel(0xcc000, ®s->pad10[0]); | |
347 | writel(0, ®s->DrCmndPro); | |
348 | writel(0, ®s->DrCmndCon); | |
349 | writel(0, ®s->DwCmndPro); | |
350 | writel(0, ®s->DwCmndCon); | |
351 | writel(0, ®s->DwCmndRef); | |
352 | writel(0, ®s->DrDataPro); | |
353 | writel(0, ®s->DrDataCon); | |
354 | writel(0, ®s->DrDataRef); | |
355 | writel(0, ®s->DwDataPro); | |
356 | writel(0, ®s->DwDataCon); | |
357 | writel(0, ®s->DwDataRef); | |
358 | #endif | |
359 | ||
360 | writel(0xffffffff, ®s->MbEvent); | |
361 | writel(0, ®s->Event); | |
362 | ||
363 | writel(0, ®s->TxPi); | |
364 | writel(0, ®s->IpRxPi); | |
365 | ||
366 | writel(0, ®s->EvtCon); | |
367 | writel(0, ®s->EvtPrd); | |
368 | ||
369 | rrpriv->info->evt_ctrl.pi = 0; | |
370 | ||
371 | for (i = 0; i < CMD_RING_ENTRIES; i++) | |
372 | writel(0, ®s->CmdRing[i]); | |
373 | ||
374 | /* | |
375 | * Why 32 ? is this not cache line size dependent? | |
376 | */ | |
377 | writel(RBURST_64|WBURST_64, ®s->PciState); | |
378 | wmb(); | |
379 | ||
cf962378 AV |
380 | start_pc = rr_read_eeprom_word(rrpriv, |
381 | offsetof(struct eeprom, rncd_info.FwStart)); | |
1da177e4 LT |
382 | |
383 | #if (DEBUG > 1) | |
384 | printk("%s: Executing firmware at address 0x%06x\n", | |
385 | dev->name, start_pc); | |
386 | #endif | |
387 | ||
388 | writel(start_pc + 0x800, ®s->Pc); | |
389 | wmb(); | |
390 | udelay(5); | |
391 | ||
392 | writel(start_pc, ®s->Pc); | |
393 | wmb(); | |
394 | ||
395 | return 0; | |
396 | } | |
397 | ||
398 | ||
399 | /* | |
400 | * Read a string from the EEPROM. | |
401 | */ | |
402 | static unsigned int rr_read_eeprom(struct rr_private *rrpriv, | |
403 | unsigned long offset, | |
404 | unsigned char *buf, | |
405 | unsigned long length) | |
406 | { | |
407 | struct rr_regs __iomem *regs = rrpriv->regs; | |
408 | u32 misc, io, host, i; | |
409 | ||
410 | io = readl(®s->ExtIo); | |
411 | writel(0, ®s->ExtIo); | |
412 | misc = readl(®s->LocalCtrl); | |
413 | writel(0, ®s->LocalCtrl); | |
414 | host = readl(®s->HostCtrl); | |
415 | writel(host | HALT_NIC, ®s->HostCtrl); | |
416 | mb(); | |
417 | ||
418 | for (i = 0; i < length; i++){ | |
419 | writel((EEPROM_BASE + ((offset+i) << 3)), ®s->WinBase); | |
420 | mb(); | |
421 | buf[i] = (readl(®s->WinData) >> 24) & 0xff; | |
422 | mb(); | |
423 | } | |
424 | ||
425 | writel(host, ®s->HostCtrl); | |
426 | writel(misc, ®s->LocalCtrl); | |
427 | writel(io, ®s->ExtIo); | |
428 | mb(); | |
429 | return i; | |
430 | } | |
431 | ||
432 | ||
433 | /* | |
434 | * Shortcut to read one word (4 bytes) out of the EEPROM and convert | |
435 | * it to our CPU byte-order. | |
436 | */ | |
437 | static u32 rr_read_eeprom_word(struct rr_private *rrpriv, | |
cf962378 | 438 | size_t offset) |
1da177e4 | 439 | { |
cf962378 | 440 | __be32 word; |
1da177e4 | 441 | |
cf962378 AV |
442 | if ((rr_read_eeprom(rrpriv, offset, |
443 | (unsigned char *)&word, 4) == 4)) | |
1da177e4 LT |
444 | return be32_to_cpu(word); |
445 | return 0; | |
446 | } | |
447 | ||
448 | ||
449 | /* | |
450 | * Write a string to the EEPROM. | |
451 | * | |
452 | * This is only called when the firmware is not running. | |
453 | */ | |
454 | static unsigned int write_eeprom(struct rr_private *rrpriv, | |
455 | unsigned long offset, | |
456 | unsigned char *buf, | |
457 | unsigned long length) | |
458 | { | |
459 | struct rr_regs __iomem *regs = rrpriv->regs; | |
460 | u32 misc, io, data, i, j, ready, error = 0; | |
461 | ||
462 | io = readl(®s->ExtIo); | |
463 | writel(0, ®s->ExtIo); | |
464 | misc = readl(®s->LocalCtrl); | |
465 | writel(ENABLE_EEPROM_WRITE, ®s->LocalCtrl); | |
466 | mb(); | |
467 | ||
468 | for (i = 0; i < length; i++){ | |
469 | writel((EEPROM_BASE + ((offset+i) << 3)), ®s->WinBase); | |
470 | mb(); | |
471 | data = buf[i] << 24; | |
472 | /* | |
473 | * Only try to write the data if it is not the same | |
474 | * value already. | |
475 | */ | |
476 | if ((readl(®s->WinData) & 0xff000000) != data){ | |
477 | writel(data, ®s->WinData); | |
478 | ready = 0; | |
479 | j = 0; | |
480 | mb(); | |
481 | while(!ready){ | |
482 | udelay(20); | |
483 | if ((readl(®s->WinData) & 0xff000000) == | |
484 | data) | |
485 | ready = 1; | |
486 | mb(); | |
487 | if (j++ > 5000){ | |
488 | printk("data mismatch: %08x, " | |
489 | "WinData %08x\n", data, | |
490 | readl(®s->WinData)); | |
491 | ready = 1; | |
492 | error = 1; | |
493 | } | |
494 | } | |
495 | } | |
496 | } | |
497 | ||
498 | writel(misc, ®s->LocalCtrl); | |
499 | writel(io, ®s->ExtIo); | |
500 | mb(); | |
501 | ||
502 | return error; | |
503 | } | |
504 | ||
505 | ||
4f092432 | 506 | static int __devinit rr_init(struct net_device *dev) |
1da177e4 LT |
507 | { |
508 | struct rr_private *rrpriv; | |
509 | struct rr_regs __iomem *regs; | |
1da177e4 | 510 | u32 sram_size, rev; |
1da177e4 LT |
511 | |
512 | rrpriv = netdev_priv(dev); | |
513 | regs = rrpriv->regs; | |
514 | ||
515 | rev = readl(®s->FwRev); | |
516 | rrpriv->fw_rev = rev; | |
517 | if (rev > 0x00020024) | |
518 | printk(" Firmware revision: %i.%i.%i\n", (rev >> 16), | |
519 | ((rev >> 8) & 0xff), (rev & 0xff)); | |
520 | else if (rev >= 0x00020000) { | |
521 | printk(" Firmware revision: %i.%i.%i (2.0.37 or " | |
522 | "later is recommended)\n", (rev >> 16), | |
523 | ((rev >> 8) & 0xff), (rev & 0xff)); | |
524 | }else{ | |
525 | printk(" Firmware revision too old: %i.%i.%i, please " | |
526 | "upgrade to 2.0.37 or later.\n", | |
527 | (rev >> 16), ((rev >> 8) & 0xff), (rev & 0xff)); | |
528 | } | |
529 | ||
530 | #if (DEBUG > 2) | |
531 | printk(" Maximum receive rings %i\n", readl(®s->MaxRxRng)); | |
532 | #endif | |
533 | ||
534 | /* | |
535 | * Read the hardware address from the eeprom. The HW address | |
536 | * is not really necessary for HIPPI but awfully convenient. | |
537 | * The pointer arithmetic to put it in dev_addr is ugly, but | |
538 | * Donald Becker does it this way for the GigE version of this | |
539 | * card and it's shorter and more portable than any | |
540 | * other method I've seen. -VAL | |
541 | */ | |
542 | ||
cf962378 AV |
543 | *(__be16 *)(dev->dev_addr) = |
544 | htons(rr_read_eeprom_word(rrpriv, offsetof(struct eeprom, manf.BoardULA))); | |
545 | *(__be32 *)(dev->dev_addr+2) = | |
546 | htonl(rr_read_eeprom_word(rrpriv, offsetof(struct eeprom, manf.BoardULA[4]))); | |
6aa20a22 | 547 | |
e174961c | 548 | printk(" MAC: %pM\n", dev->dev_addr); |
1da177e4 | 549 | |
cf962378 | 550 | sram_size = rr_read_eeprom_word(rrpriv, 8); |
1da177e4 LT |
551 | printk(" SRAM size 0x%06x\n", sram_size); |
552 | ||
1da177e4 LT |
553 | return 0; |
554 | } | |
555 | ||
556 | ||
557 | static int rr_init1(struct net_device *dev) | |
558 | { | |
559 | struct rr_private *rrpriv; | |
560 | struct rr_regs __iomem *regs; | |
561 | unsigned long myjif, flags; | |
562 | struct cmd cmd; | |
563 | u32 hostctrl; | |
564 | int ecode = 0; | |
565 | short i; | |
566 | ||
567 | rrpriv = netdev_priv(dev); | |
568 | regs = rrpriv->regs; | |
569 | ||
570 | spin_lock_irqsave(&rrpriv->lock, flags); | |
571 | ||
572 | hostctrl = readl(®s->HostCtrl); | |
573 | writel(hostctrl | HALT_NIC | RR_CLEAR_INT, ®s->HostCtrl); | |
574 | wmb(); | |
575 | ||
576 | if (hostctrl & PARITY_ERR){ | |
577 | printk("%s: Parity error halting NIC - this is serious!\n", | |
578 | dev->name); | |
579 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
580 | ecode = -EFAULT; | |
581 | goto error; | |
582 | } | |
583 | ||
584 | set_rxaddr(regs, rrpriv->rx_ctrl_dma); | |
585 | set_infoaddr(regs, rrpriv->info_dma); | |
586 | ||
587 | rrpriv->info->evt_ctrl.entry_size = sizeof(struct event); | |
588 | rrpriv->info->evt_ctrl.entries = EVT_RING_ENTRIES; | |
589 | rrpriv->info->evt_ctrl.mode = 0; | |
590 | rrpriv->info->evt_ctrl.pi = 0; | |
591 | set_rraddr(&rrpriv->info->evt_ctrl.rngptr, rrpriv->evt_ring_dma); | |
592 | ||
593 | rrpriv->info->cmd_ctrl.entry_size = sizeof(struct cmd); | |
594 | rrpriv->info->cmd_ctrl.entries = CMD_RING_ENTRIES; | |
595 | rrpriv->info->cmd_ctrl.mode = 0; | |
596 | rrpriv->info->cmd_ctrl.pi = 15; | |
597 | ||
598 | for (i = 0; i < CMD_RING_ENTRIES; i++) { | |
599 | writel(0, ®s->CmdRing[i]); | |
600 | } | |
601 | ||
602 | for (i = 0; i < TX_RING_ENTRIES; i++) { | |
603 | rrpriv->tx_ring[i].size = 0; | |
604 | set_rraddr(&rrpriv->tx_ring[i].addr, 0); | |
605 | rrpriv->tx_skbuff[i] = NULL; | |
606 | } | |
607 | rrpriv->info->tx_ctrl.entry_size = sizeof(struct tx_desc); | |
608 | rrpriv->info->tx_ctrl.entries = TX_RING_ENTRIES; | |
609 | rrpriv->info->tx_ctrl.mode = 0; | |
610 | rrpriv->info->tx_ctrl.pi = 0; | |
611 | set_rraddr(&rrpriv->info->tx_ctrl.rngptr, rrpriv->tx_ring_dma); | |
612 | ||
613 | /* | |
614 | * Set dirty_tx before we start receiving interrupts, otherwise | |
615 | * the interrupt handler might think it is supposed to process | |
616 | * tx ints before we are up and running, which may cause a null | |
617 | * pointer access in the int handler. | |
618 | */ | |
619 | rrpriv->tx_full = 0; | |
620 | rrpriv->cur_rx = 0; | |
621 | rrpriv->dirty_rx = rrpriv->dirty_tx = 0; | |
622 | ||
623 | rr_reset(dev); | |
624 | ||
625 | /* Tuning values */ | |
626 | writel(0x5000, ®s->ConRetry); | |
627 | writel(0x100, ®s->ConRetryTmr); | |
628 | writel(0x500000, ®s->ConTmout); | |
629 | writel(0x60, ®s->IntrTmr); | |
630 | writel(0x500000, ®s->TxDataMvTimeout); | |
631 | writel(0x200000, ®s->RxDataMvTimeout); | |
632 | writel(0x80, ®s->WriteDmaThresh); | |
633 | writel(0x80, ®s->ReadDmaThresh); | |
634 | ||
635 | rrpriv->fw_running = 0; | |
636 | wmb(); | |
637 | ||
638 | hostctrl &= ~(HALT_NIC | INVALID_INST_B | PARITY_ERR); | |
639 | writel(hostctrl, ®s->HostCtrl); | |
640 | wmb(); | |
641 | ||
642 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
643 | ||
644 | for (i = 0; i < RX_RING_ENTRIES; i++) { | |
645 | struct sk_buff *skb; | |
646 | dma_addr_t addr; | |
647 | ||
648 | rrpriv->rx_ring[i].mode = 0; | |
649 | skb = alloc_skb(dev->mtu + HIPPI_HLEN, GFP_ATOMIC); | |
650 | if (!skb) { | |
651 | printk(KERN_WARNING "%s: Unable to allocate memory " | |
652 | "for receive ring - halting NIC\n", dev->name); | |
653 | ecode = -ENOMEM; | |
654 | goto error; | |
655 | } | |
656 | rrpriv->rx_skbuff[i] = skb; | |
657 | addr = pci_map_single(rrpriv->pci_dev, skb->data, | |
658 | dev->mtu + HIPPI_HLEN, PCI_DMA_FROMDEVICE); | |
659 | /* | |
660 | * Sanity test to see if we conflict with the DMA | |
661 | * limitations of the Roadrunner. | |
662 | */ | |
663 | if ((((unsigned long)skb->data) & 0xfff) > ~65320) | |
664 | printk("skb alloc error\n"); | |
665 | ||
666 | set_rraddr(&rrpriv->rx_ring[i].addr, addr); | |
667 | rrpriv->rx_ring[i].size = dev->mtu + HIPPI_HLEN; | |
668 | } | |
669 | ||
670 | rrpriv->rx_ctrl[4].entry_size = sizeof(struct rx_desc); | |
671 | rrpriv->rx_ctrl[4].entries = RX_RING_ENTRIES; | |
672 | rrpriv->rx_ctrl[4].mode = 8; | |
673 | rrpriv->rx_ctrl[4].pi = 0; | |
674 | wmb(); | |
675 | set_rraddr(&rrpriv->rx_ctrl[4].rngptr, rrpriv->rx_ring_dma); | |
676 | ||
677 | udelay(1000); | |
678 | ||
679 | /* | |
680 | * Now start the FirmWare. | |
681 | */ | |
682 | cmd.code = C_START_FW; | |
683 | cmd.ring = 0; | |
684 | cmd.index = 0; | |
685 | ||
686 | rr_issue_cmd(rrpriv, &cmd); | |
687 | ||
688 | /* | |
689 | * Give the FirmWare time to chew on the `get running' command. | |
690 | */ | |
691 | myjif = jiffies + 5 * HZ; | |
692 | while (time_before(jiffies, myjif) && !rrpriv->fw_running) | |
693 | cpu_relax(); | |
694 | ||
695 | netif_start_queue(dev); | |
696 | ||
697 | return ecode; | |
698 | ||
699 | error: | |
700 | /* | |
701 | * We might have gotten here because we are out of memory, | |
702 | * make sure we release everything we allocated before failing | |
703 | */ | |
704 | for (i = 0; i < RX_RING_ENTRIES; i++) { | |
705 | struct sk_buff *skb = rrpriv->rx_skbuff[i]; | |
706 | ||
707 | if (skb) { | |
6aa20a22 JG |
708 | pci_unmap_single(rrpriv->pci_dev, |
709 | rrpriv->rx_ring[i].addr.addrlo, | |
1da177e4 LT |
710 | dev->mtu + HIPPI_HLEN, |
711 | PCI_DMA_FROMDEVICE); | |
712 | rrpriv->rx_ring[i].size = 0; | |
713 | set_rraddr(&rrpriv->rx_ring[i].addr, 0); | |
714 | dev_kfree_skb(skb); | |
715 | rrpriv->rx_skbuff[i] = NULL; | |
716 | } | |
717 | } | |
718 | return ecode; | |
719 | } | |
720 | ||
721 | ||
722 | /* | |
723 | * All events are considered to be slow (RX/TX ints do not generate | |
724 | * events) and are handled here, outside the main interrupt handler, | |
725 | * to reduce the size of the handler. | |
726 | */ | |
727 | static u32 rr_handle_event(struct net_device *dev, u32 prodidx, u32 eidx) | |
728 | { | |
729 | struct rr_private *rrpriv; | |
730 | struct rr_regs __iomem *regs; | |
731 | u32 tmp; | |
732 | ||
733 | rrpriv = netdev_priv(dev); | |
734 | regs = rrpriv->regs; | |
735 | ||
736 | while (prodidx != eidx){ | |
737 | switch (rrpriv->evt_ring[eidx].code){ | |
738 | case E_NIC_UP: | |
739 | tmp = readl(®s->FwRev); | |
740 | printk(KERN_INFO "%s: Firmware revision %i.%i.%i " | |
741 | "up and running\n", dev->name, | |
742 | (tmp >> 16), ((tmp >> 8) & 0xff), (tmp & 0xff)); | |
743 | rrpriv->fw_running = 1; | |
744 | writel(RX_RING_ENTRIES - 1, ®s->IpRxPi); | |
745 | wmb(); | |
746 | break; | |
747 | case E_LINK_ON: | |
748 | printk(KERN_INFO "%s: Optical link ON\n", dev->name); | |
749 | break; | |
750 | case E_LINK_OFF: | |
751 | printk(KERN_INFO "%s: Optical link OFF\n", dev->name); | |
752 | break; | |
753 | case E_RX_IDLE: | |
754 | printk(KERN_WARNING "%s: RX data not moving\n", | |
755 | dev->name); | |
756 | goto drop; | |
757 | case E_WATCHDOG: | |
758 | printk(KERN_INFO "%s: The watchdog is here to see " | |
759 | "us\n", dev->name); | |
760 | break; | |
761 | case E_INTERN_ERR: | |
762 | printk(KERN_ERR "%s: HIPPI Internal NIC error\n", | |
763 | dev->name); | |
6aa20a22 | 764 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
765 | ®s->HostCtrl); |
766 | wmb(); | |
767 | break; | |
768 | case E_HOST_ERR: | |
769 | printk(KERN_ERR "%s: Host software error\n", | |
770 | dev->name); | |
6aa20a22 | 771 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
772 | ®s->HostCtrl); |
773 | wmb(); | |
774 | break; | |
775 | /* | |
776 | * TX events. | |
777 | */ | |
778 | case E_CON_REJ: | |
779 | printk(KERN_WARNING "%s: Connection rejected\n", | |
780 | dev->name); | |
09f75cd7 | 781 | dev->stats.tx_aborted_errors++; |
1da177e4 LT |
782 | break; |
783 | case E_CON_TMOUT: | |
784 | printk(KERN_WARNING "%s: Connection timeout\n", | |
785 | dev->name); | |
786 | break; | |
787 | case E_DISC_ERR: | |
788 | printk(KERN_WARNING "%s: HIPPI disconnect error\n", | |
789 | dev->name); | |
09f75cd7 | 790 | dev->stats.tx_aborted_errors++; |
1da177e4 LT |
791 | break; |
792 | case E_INT_PRTY: | |
793 | printk(KERN_ERR "%s: HIPPI Internal Parity error\n", | |
794 | dev->name); | |
6aa20a22 | 795 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
796 | ®s->HostCtrl); |
797 | wmb(); | |
798 | break; | |
799 | case E_TX_IDLE: | |
800 | printk(KERN_WARNING "%s: Transmitter idle\n", | |
801 | dev->name); | |
802 | break; | |
803 | case E_TX_LINK_DROP: | |
804 | printk(KERN_WARNING "%s: Link lost during transmit\n", | |
805 | dev->name); | |
09f75cd7 | 806 | dev->stats.tx_aborted_errors++; |
6aa20a22 | 807 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
808 | ®s->HostCtrl); |
809 | wmb(); | |
810 | break; | |
811 | case E_TX_INV_RNG: | |
812 | printk(KERN_ERR "%s: Invalid send ring block\n", | |
813 | dev->name); | |
6aa20a22 | 814 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
815 | ®s->HostCtrl); |
816 | wmb(); | |
817 | break; | |
818 | case E_TX_INV_BUF: | |
819 | printk(KERN_ERR "%s: Invalid send buffer address\n", | |
820 | dev->name); | |
6aa20a22 | 821 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
822 | ®s->HostCtrl); |
823 | wmb(); | |
824 | break; | |
825 | case E_TX_INV_DSC: | |
826 | printk(KERN_ERR "%s: Invalid descriptor address\n", | |
827 | dev->name); | |
6aa20a22 | 828 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
829 | ®s->HostCtrl); |
830 | wmb(); | |
831 | break; | |
832 | /* | |
833 | * RX events. | |
834 | */ | |
835 | case E_RX_RNG_OUT: | |
836 | printk(KERN_INFO "%s: Receive ring full\n", dev->name); | |
837 | break; | |
838 | ||
839 | case E_RX_PAR_ERR: | |
840 | printk(KERN_WARNING "%s: Receive parity error\n", | |
841 | dev->name); | |
842 | goto drop; | |
843 | case E_RX_LLRC_ERR: | |
844 | printk(KERN_WARNING "%s: Receive LLRC error\n", | |
845 | dev->name); | |
846 | goto drop; | |
847 | case E_PKT_LN_ERR: | |
848 | printk(KERN_WARNING "%s: Receive packet length " | |
849 | "error\n", dev->name); | |
850 | goto drop; | |
851 | case E_DTA_CKSM_ERR: | |
852 | printk(KERN_WARNING "%s: Data checksum error\n", | |
853 | dev->name); | |
854 | goto drop; | |
855 | case E_SHT_BST: | |
856 | printk(KERN_WARNING "%s: Unexpected short burst " | |
857 | "error\n", dev->name); | |
858 | goto drop; | |
859 | case E_STATE_ERR: | |
860 | printk(KERN_WARNING "%s: Recv. state transition" | |
861 | " error\n", dev->name); | |
862 | goto drop; | |
863 | case E_UNEXP_DATA: | |
864 | printk(KERN_WARNING "%s: Unexpected data error\n", | |
865 | dev->name); | |
866 | goto drop; | |
867 | case E_LST_LNK_ERR: | |
868 | printk(KERN_WARNING "%s: Link lost error\n", | |
869 | dev->name); | |
870 | goto drop; | |
871 | case E_FRM_ERR: | |
872 | printk(KERN_WARNING "%s: Framming Error\n", | |
873 | dev->name); | |
874 | goto drop; | |
875 | case E_FLG_SYN_ERR: | |
2450022a | 876 | printk(KERN_WARNING "%s: Flag sync. lost during " |
1da177e4 LT |
877 | "packet\n", dev->name); |
878 | goto drop; | |
879 | case E_RX_INV_BUF: | |
880 | printk(KERN_ERR "%s: Invalid receive buffer " | |
881 | "address\n", dev->name); | |
6aa20a22 | 882 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
883 | ®s->HostCtrl); |
884 | wmb(); | |
885 | break; | |
886 | case E_RX_INV_DSC: | |
887 | printk(KERN_ERR "%s: Invalid receive descriptor " | |
888 | "address\n", dev->name); | |
6aa20a22 | 889 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
890 | ®s->HostCtrl); |
891 | wmb(); | |
892 | break; | |
893 | case E_RNG_BLK: | |
894 | printk(KERN_ERR "%s: Invalid ring block\n", | |
895 | dev->name); | |
6aa20a22 | 896 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
897 | ®s->HostCtrl); |
898 | wmb(); | |
899 | break; | |
900 | drop: | |
901 | /* Label packet to be dropped. | |
902 | * Actual dropping occurs in rx | |
903 | * handling. | |
904 | * | |
905 | * The index of packet we get to drop is | |
906 | * the index of the packet following | |
907 | * the bad packet. -kbf | |
908 | */ | |
909 | { | |
910 | u16 index = rrpriv->evt_ring[eidx].index; | |
911 | index = (index + (RX_RING_ENTRIES - 1)) % | |
912 | RX_RING_ENTRIES; | |
913 | rrpriv->rx_ring[index].mode |= | |
914 | (PACKET_BAD | PACKET_END); | |
915 | } | |
916 | break; | |
917 | default: | |
918 | printk(KERN_WARNING "%s: Unhandled event 0x%02x\n", | |
919 | dev->name, rrpriv->evt_ring[eidx].code); | |
920 | } | |
921 | eidx = (eidx + 1) % EVT_RING_ENTRIES; | |
922 | } | |
923 | ||
924 | rrpriv->info->evt_ctrl.pi = eidx; | |
925 | wmb(); | |
926 | return eidx; | |
927 | } | |
928 | ||
929 | ||
930 | static void rx_int(struct net_device *dev, u32 rxlimit, u32 index) | |
931 | { | |
932 | struct rr_private *rrpriv = netdev_priv(dev); | |
933 | struct rr_regs __iomem *regs = rrpriv->regs; | |
934 | ||
935 | do { | |
936 | struct rx_desc *desc; | |
937 | u32 pkt_len; | |
938 | ||
939 | desc = &(rrpriv->rx_ring[index]); | |
940 | pkt_len = desc->size; | |
941 | #if (DEBUG > 2) | |
942 | printk("index %i, rxlimit %i\n", index, rxlimit); | |
943 | printk("len %x, mode %x\n", pkt_len, desc->mode); | |
944 | #endif | |
945 | if ( (rrpriv->rx_ring[index].mode & PACKET_BAD) == PACKET_BAD){ | |
09f75cd7 | 946 | dev->stats.rx_dropped++; |
1da177e4 LT |
947 | goto defer; |
948 | } | |
949 | ||
950 | if (pkt_len > 0){ | |
951 | struct sk_buff *skb, *rx_skb; | |
952 | ||
953 | rx_skb = rrpriv->rx_skbuff[index]; | |
954 | ||
955 | if (pkt_len < PKT_COPY_THRESHOLD) { | |
956 | skb = alloc_skb(pkt_len, GFP_ATOMIC); | |
957 | if (skb == NULL){ | |
958 | printk(KERN_WARNING "%s: Unable to allocate skb (%i bytes), deferring packet\n", dev->name, pkt_len); | |
09f75cd7 | 959 | dev->stats.rx_dropped++; |
1da177e4 LT |
960 | goto defer; |
961 | } else { | |
962 | pci_dma_sync_single_for_cpu(rrpriv->pci_dev, | |
963 | desc->addr.addrlo, | |
964 | pkt_len, | |
965 | PCI_DMA_FROMDEVICE); | |
966 | ||
967 | memcpy(skb_put(skb, pkt_len), | |
968 | rx_skb->data, pkt_len); | |
969 | ||
970 | pci_dma_sync_single_for_device(rrpriv->pci_dev, | |
971 | desc->addr.addrlo, | |
972 | pkt_len, | |
973 | PCI_DMA_FROMDEVICE); | |
974 | } | |
975 | }else{ | |
976 | struct sk_buff *newskb; | |
977 | ||
978 | newskb = alloc_skb(dev->mtu + HIPPI_HLEN, | |
979 | GFP_ATOMIC); | |
980 | if (newskb){ | |
981 | dma_addr_t addr; | |
982 | ||
6aa20a22 JG |
983 | pci_unmap_single(rrpriv->pci_dev, |
984 | desc->addr.addrlo, dev->mtu + | |
1da177e4 LT |
985 | HIPPI_HLEN, PCI_DMA_FROMDEVICE); |
986 | skb = rx_skb; | |
987 | skb_put(skb, pkt_len); | |
988 | rrpriv->rx_skbuff[index] = newskb; | |
6aa20a22 JG |
989 | addr = pci_map_single(rrpriv->pci_dev, |
990 | newskb->data, | |
991 | dev->mtu + HIPPI_HLEN, | |
1da177e4 LT |
992 | PCI_DMA_FROMDEVICE); |
993 | set_rraddr(&desc->addr, addr); | |
994 | } else { | |
995 | printk("%s: Out of memory, deferring " | |
996 | "packet\n", dev->name); | |
09f75cd7 | 997 | dev->stats.rx_dropped++; |
1da177e4 LT |
998 | goto defer; |
999 | } | |
1000 | } | |
1da177e4 LT |
1001 | skb->protocol = hippi_type_trans(skb, dev); |
1002 | ||
1003 | netif_rx(skb); /* send it up */ | |
1004 | ||
09f75cd7 JG |
1005 | dev->stats.rx_packets++; |
1006 | dev->stats.rx_bytes += pkt_len; | |
1da177e4 LT |
1007 | } |
1008 | defer: | |
1009 | desc->mode = 0; | |
1010 | desc->size = dev->mtu + HIPPI_HLEN; | |
1011 | ||
1012 | if ((index & 7) == 7) | |
1013 | writel(index, ®s->IpRxPi); | |
1014 | ||
1015 | index = (index + 1) % RX_RING_ENTRIES; | |
1016 | } while(index != rxlimit); | |
1017 | ||
1018 | rrpriv->cur_rx = index; | |
1019 | wmb(); | |
1020 | } | |
1021 | ||
1022 | ||
7d12e780 | 1023 | static irqreturn_t rr_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1024 | { |
1025 | struct rr_private *rrpriv; | |
1026 | struct rr_regs __iomem *regs; | |
1027 | struct net_device *dev = (struct net_device *)dev_id; | |
1028 | u32 prodidx, rxindex, eidx, txcsmr, rxlimit, txcon; | |
1029 | ||
1030 | rrpriv = netdev_priv(dev); | |
1031 | regs = rrpriv->regs; | |
1032 | ||
1033 | if (!(readl(®s->HostCtrl) & RR_INT)) | |
1034 | return IRQ_NONE; | |
1035 | ||
1036 | spin_lock(&rrpriv->lock); | |
1037 | ||
1038 | prodidx = readl(®s->EvtPrd); | |
1039 | txcsmr = (prodidx >> 8) & 0xff; | |
1040 | rxlimit = (prodidx >> 16) & 0xff; | |
1041 | prodidx &= 0xff; | |
1042 | ||
1043 | #if (DEBUG > 2) | |
1044 | printk("%s: interrupt, prodidx = %i, eidx = %i\n", dev->name, | |
1045 | prodidx, rrpriv->info->evt_ctrl.pi); | |
1046 | #endif | |
1047 | /* | |
1048 | * Order here is important. We must handle events | |
1049 | * before doing anything else in order to catch | |
1050 | * such things as LLRC errors, etc -kbf | |
1051 | */ | |
1052 | ||
1053 | eidx = rrpriv->info->evt_ctrl.pi; | |
1054 | if (prodidx != eidx) | |
1055 | eidx = rr_handle_event(dev, prodidx, eidx); | |
1056 | ||
1057 | rxindex = rrpriv->cur_rx; | |
1058 | if (rxindex != rxlimit) | |
1059 | rx_int(dev, rxlimit, rxindex); | |
1060 | ||
1061 | txcon = rrpriv->dirty_tx; | |
1062 | if (txcsmr != txcon) { | |
1063 | do { | |
1064 | /* Due to occational firmware TX producer/consumer out | |
1065 | * of sync. error need to check entry in ring -kbf | |
1066 | */ | |
1067 | if(rrpriv->tx_skbuff[txcon]){ | |
1068 | struct tx_desc *desc; | |
1069 | struct sk_buff *skb; | |
1070 | ||
1071 | desc = &(rrpriv->tx_ring[txcon]); | |
1072 | skb = rrpriv->tx_skbuff[txcon]; | |
1073 | ||
09f75cd7 JG |
1074 | dev->stats.tx_packets++; |
1075 | dev->stats.tx_bytes += skb->len; | |
1da177e4 LT |
1076 | |
1077 | pci_unmap_single(rrpriv->pci_dev, | |
1078 | desc->addr.addrlo, skb->len, | |
1079 | PCI_DMA_TODEVICE); | |
1080 | dev_kfree_skb_irq(skb); | |
1081 | ||
1082 | rrpriv->tx_skbuff[txcon] = NULL; | |
1083 | desc->size = 0; | |
1084 | set_rraddr(&rrpriv->tx_ring[txcon].addr, 0); | |
1085 | desc->mode = 0; | |
1086 | } | |
1087 | txcon = (txcon + 1) % TX_RING_ENTRIES; | |
1088 | } while (txcsmr != txcon); | |
1089 | wmb(); | |
1090 | ||
1091 | rrpriv->dirty_tx = txcon; | |
1092 | if (rrpriv->tx_full && rr_if_busy(dev) && | |
1093 | (((rrpriv->info->tx_ctrl.pi + 1) % TX_RING_ENTRIES) | |
1094 | != rrpriv->dirty_tx)){ | |
1095 | rrpriv->tx_full = 0; | |
1096 | netif_wake_queue(dev); | |
1097 | } | |
1098 | } | |
1099 | ||
1100 | eidx |= ((txcsmr << 8) | (rxlimit << 16)); | |
1101 | writel(eidx, ®s->EvtCon); | |
1102 | wmb(); | |
1103 | ||
1104 | spin_unlock(&rrpriv->lock); | |
1105 | return IRQ_HANDLED; | |
1106 | } | |
1107 | ||
1108 | static inline void rr_raz_tx(struct rr_private *rrpriv, | |
1109 | struct net_device *dev) | |
1110 | { | |
1111 | int i; | |
1112 | ||
1113 | for (i = 0; i < TX_RING_ENTRIES; i++) { | |
1114 | struct sk_buff *skb = rrpriv->tx_skbuff[i]; | |
1115 | ||
1116 | if (skb) { | |
1117 | struct tx_desc *desc = &(rrpriv->tx_ring[i]); | |
1118 | ||
1119 | pci_unmap_single(rrpriv->pci_dev, desc->addr.addrlo, | |
1120 | skb->len, PCI_DMA_TODEVICE); | |
1121 | desc->size = 0; | |
1122 | set_rraddr(&desc->addr, 0); | |
1123 | dev_kfree_skb(skb); | |
1124 | rrpriv->tx_skbuff[i] = NULL; | |
1125 | } | |
1126 | } | |
1127 | } | |
1128 | ||
1129 | ||
1130 | static inline void rr_raz_rx(struct rr_private *rrpriv, | |
1131 | struct net_device *dev) | |
1132 | { | |
1133 | int i; | |
1134 | ||
1135 | for (i = 0; i < RX_RING_ENTRIES; i++) { | |
1136 | struct sk_buff *skb = rrpriv->rx_skbuff[i]; | |
1137 | ||
1138 | if (skb) { | |
1139 | struct rx_desc *desc = &(rrpriv->rx_ring[i]); | |
1140 | ||
1141 | pci_unmap_single(rrpriv->pci_dev, desc->addr.addrlo, | |
1142 | dev->mtu + HIPPI_HLEN, PCI_DMA_FROMDEVICE); | |
1143 | desc->size = 0; | |
1144 | set_rraddr(&desc->addr, 0); | |
1145 | dev_kfree_skb(skb); | |
1146 | rrpriv->rx_skbuff[i] = NULL; | |
1147 | } | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | static void rr_timer(unsigned long data) | |
1152 | { | |
1153 | struct net_device *dev = (struct net_device *)data; | |
1154 | struct rr_private *rrpriv = netdev_priv(dev); | |
1155 | struct rr_regs __iomem *regs = rrpriv->regs; | |
1156 | unsigned long flags; | |
1157 | ||
1158 | if (readl(®s->HostCtrl) & NIC_HALTED){ | |
1159 | printk("%s: Restarting nic\n", dev->name); | |
1160 | memset(rrpriv->rx_ctrl, 0, 256 * sizeof(struct ring_ctrl)); | |
1161 | memset(rrpriv->info, 0, sizeof(struct rr_info)); | |
1162 | wmb(); | |
1163 | ||
1164 | rr_raz_tx(rrpriv, dev); | |
1165 | rr_raz_rx(rrpriv, dev); | |
1166 | ||
1167 | if (rr_init1(dev)) { | |
1168 | spin_lock_irqsave(&rrpriv->lock, flags); | |
6aa20a22 | 1169 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
1170 | ®s->HostCtrl); |
1171 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1172 | } | |
1173 | } | |
1174 | rrpriv->timer.expires = RUN_AT(5*HZ); | |
1175 | add_timer(&rrpriv->timer); | |
1176 | } | |
1177 | ||
1178 | ||
1179 | static int rr_open(struct net_device *dev) | |
1180 | { | |
1181 | struct rr_private *rrpriv = netdev_priv(dev); | |
1182 | struct pci_dev *pdev = rrpriv->pci_dev; | |
1183 | struct rr_regs __iomem *regs; | |
1184 | int ecode = 0; | |
1185 | unsigned long flags; | |
1186 | dma_addr_t dma_addr; | |
1187 | ||
1188 | regs = rrpriv->regs; | |
1189 | ||
1190 | if (rrpriv->fw_rev < 0x00020000) { | |
1191 | printk(KERN_WARNING "%s: trying to configure device with " | |
1192 | "obsolete firmware\n", dev->name); | |
1193 | ecode = -EBUSY; | |
1194 | goto error; | |
1195 | } | |
1196 | ||
1197 | rrpriv->rx_ctrl = pci_alloc_consistent(pdev, | |
1198 | 256 * sizeof(struct ring_ctrl), | |
1199 | &dma_addr); | |
1200 | if (!rrpriv->rx_ctrl) { | |
1201 | ecode = -ENOMEM; | |
1202 | goto error; | |
1203 | } | |
1204 | rrpriv->rx_ctrl_dma = dma_addr; | |
1205 | memset(rrpriv->rx_ctrl, 0, 256*sizeof(struct ring_ctrl)); | |
1206 | ||
1207 | rrpriv->info = pci_alloc_consistent(pdev, sizeof(struct rr_info), | |
1208 | &dma_addr); | |
1209 | if (!rrpriv->info) { | |
1210 | ecode = -ENOMEM; | |
1211 | goto error; | |
1212 | } | |
1213 | rrpriv->info_dma = dma_addr; | |
1214 | memset(rrpriv->info, 0, sizeof(struct rr_info)); | |
1215 | wmb(); | |
1216 | ||
1217 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1218 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, ®s->HostCtrl); | |
1219 | readl(®s->HostCtrl); | |
1220 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1221 | ||
0193fc5e | 1222 | if (request_irq(pdev->irq, rr_interrupt, IRQF_SHARED, dev->name, dev)) { |
1da177e4 | 1223 | printk(KERN_WARNING "%s: Requested IRQ %d is busy\n", |
0193fc5e | 1224 | dev->name, pdev->irq); |
1da177e4 LT |
1225 | ecode = -EAGAIN; |
1226 | goto error; | |
1227 | } | |
1228 | ||
1229 | if ((ecode = rr_init1(dev))) | |
1230 | goto error; | |
1231 | ||
1232 | /* Set the timer to switch to check for link beat and perhaps switch | |
1233 | to an alternate media type. */ | |
1234 | init_timer(&rrpriv->timer); | |
1235 | rrpriv->timer.expires = RUN_AT(5*HZ); /* 5 sec. watchdog */ | |
1236 | rrpriv->timer.data = (unsigned long)dev; | |
c061b18d | 1237 | rrpriv->timer.function = rr_timer; /* timer handler */ |
1da177e4 LT |
1238 | add_timer(&rrpriv->timer); |
1239 | ||
1240 | netif_start_queue(dev); | |
1241 | ||
1242 | return ecode; | |
1243 | ||
1244 | error: | |
1245 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1246 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, ®s->HostCtrl); | |
1247 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1248 | ||
1249 | if (rrpriv->info) { | |
1250 | pci_free_consistent(pdev, sizeof(struct rr_info), rrpriv->info, | |
1251 | rrpriv->info_dma); | |
1252 | rrpriv->info = NULL; | |
1253 | } | |
1254 | if (rrpriv->rx_ctrl) { | |
1255 | pci_free_consistent(pdev, sizeof(struct ring_ctrl), | |
1256 | rrpriv->rx_ctrl, rrpriv->rx_ctrl_dma); | |
1257 | rrpriv->rx_ctrl = NULL; | |
1258 | } | |
1259 | ||
1260 | netif_stop_queue(dev); | |
6aa20a22 | 1261 | |
1da177e4 LT |
1262 | return ecode; |
1263 | } | |
1264 | ||
1265 | ||
1266 | static void rr_dump(struct net_device *dev) | |
1267 | { | |
1268 | struct rr_private *rrpriv; | |
1269 | struct rr_regs __iomem *regs; | |
1270 | u32 index, cons; | |
1271 | short i; | |
1272 | int len; | |
1273 | ||
1274 | rrpriv = netdev_priv(dev); | |
1275 | regs = rrpriv->regs; | |
1276 | ||
1277 | printk("%s: dumping NIC TX rings\n", dev->name); | |
1278 | ||
1279 | printk("RxPrd %08x, TxPrd %02x, EvtPrd %08x, TxPi %02x, TxCtrlPi %02x\n", | |
1280 | readl(®s->RxPrd), readl(®s->TxPrd), | |
1281 | readl(®s->EvtPrd), readl(®s->TxPi), | |
1282 | rrpriv->info->tx_ctrl.pi); | |
1283 | ||
1284 | printk("Error code 0x%x\n", readl(®s->Fail1)); | |
1285 | ||
2585e7e5 | 1286 | index = (((readl(®s->EvtPrd) >> 8) & 0xff) - 1) % TX_RING_ENTRIES; |
1da177e4 LT |
1287 | cons = rrpriv->dirty_tx; |
1288 | printk("TX ring index %i, TX consumer %i\n", | |
1289 | index, cons); | |
1290 | ||
1291 | if (rrpriv->tx_skbuff[index]){ | |
1292 | len = min_t(int, 0x80, rrpriv->tx_skbuff[index]->len); | |
1293 | printk("skbuff for index %i is valid - dumping data (0x%x bytes - DMA len 0x%x)\n", index, len, rrpriv->tx_ring[index].size); | |
1294 | for (i = 0; i < len; i++){ | |
1295 | if (!(i & 7)) | |
1296 | printk("\n"); | |
1297 | printk("%02x ", (unsigned char) rrpriv->tx_skbuff[index]->data[i]); | |
1298 | } | |
1299 | printk("\n"); | |
1300 | } | |
1301 | ||
1302 | if (rrpriv->tx_skbuff[cons]){ | |
1303 | len = min_t(int, 0x80, rrpriv->tx_skbuff[cons]->len); | |
1304 | printk("skbuff for cons %i is valid - dumping data (0x%x bytes - skbuff len 0x%x)\n", cons, len, rrpriv->tx_skbuff[cons]->len); | |
1305 | printk("mode 0x%x, size 0x%x,\n phys %08Lx, skbuff-addr %08lx, truesize 0x%x\n", | |
1306 | rrpriv->tx_ring[cons].mode, | |
1307 | rrpriv->tx_ring[cons].size, | |
1308 | (unsigned long long) rrpriv->tx_ring[cons].addr.addrlo, | |
1309 | (unsigned long)rrpriv->tx_skbuff[cons]->data, | |
1310 | (unsigned int)rrpriv->tx_skbuff[cons]->truesize); | |
1311 | for (i = 0; i < len; i++){ | |
1312 | if (!(i & 7)) | |
1313 | printk("\n"); | |
1314 | printk("%02x ", (unsigned char)rrpriv->tx_ring[cons].size); | |
1315 | } | |
1316 | printk("\n"); | |
1317 | } | |
1318 | ||
1319 | printk("dumping TX ring info:\n"); | |
1320 | for (i = 0; i < TX_RING_ENTRIES; i++) | |
1321 | printk("mode 0x%x, size 0x%x, phys-addr %08Lx\n", | |
1322 | rrpriv->tx_ring[i].mode, | |
1323 | rrpriv->tx_ring[i].size, | |
1324 | (unsigned long long) rrpriv->tx_ring[i].addr.addrlo); | |
1325 | ||
1326 | } | |
1327 | ||
1328 | ||
1329 | static int rr_close(struct net_device *dev) | |
1330 | { | |
0193fc5e FR |
1331 | struct rr_private *rrpriv = netdev_priv(dev); |
1332 | struct rr_regs __iomem *regs = rrpriv->regs; | |
1333 | struct pci_dev *pdev = rrpriv->pci_dev; | |
1da177e4 LT |
1334 | unsigned long flags; |
1335 | u32 tmp; | |
1336 | short i; | |
1337 | ||
1338 | netif_stop_queue(dev); | |
1339 | ||
1da177e4 LT |
1340 | |
1341 | /* | |
1342 | * Lock to make sure we are not cleaning up while another CPU | |
1343 | * is handling interrupts. | |
1344 | */ | |
1345 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1346 | ||
1347 | tmp = readl(®s->HostCtrl); | |
1348 | if (tmp & NIC_HALTED){ | |
1349 | printk("%s: NIC already halted\n", dev->name); | |
1350 | rr_dump(dev); | |
1351 | }else{ | |
1352 | tmp |= HALT_NIC | RR_CLEAR_INT; | |
1353 | writel(tmp, ®s->HostCtrl); | |
1354 | readl(®s->HostCtrl); | |
1355 | } | |
1356 | ||
1357 | rrpriv->fw_running = 0; | |
1358 | ||
1359 | del_timer_sync(&rrpriv->timer); | |
1360 | ||
1361 | writel(0, ®s->TxPi); | |
1362 | writel(0, ®s->IpRxPi); | |
1363 | ||
1364 | writel(0, ®s->EvtCon); | |
1365 | writel(0, ®s->EvtPrd); | |
1366 | ||
1367 | for (i = 0; i < CMD_RING_ENTRIES; i++) | |
1368 | writel(0, ®s->CmdRing[i]); | |
1369 | ||
1370 | rrpriv->info->tx_ctrl.entries = 0; | |
1371 | rrpriv->info->cmd_ctrl.pi = 0; | |
1372 | rrpriv->info->evt_ctrl.pi = 0; | |
1373 | rrpriv->rx_ctrl[4].entries = 0; | |
1374 | ||
1375 | rr_raz_tx(rrpriv, dev); | |
1376 | rr_raz_rx(rrpriv, dev); | |
1377 | ||
0193fc5e | 1378 | pci_free_consistent(pdev, 256 * sizeof(struct ring_ctrl), |
1da177e4 LT |
1379 | rrpriv->rx_ctrl, rrpriv->rx_ctrl_dma); |
1380 | rrpriv->rx_ctrl = NULL; | |
1381 | ||
0193fc5e FR |
1382 | pci_free_consistent(pdev, sizeof(struct rr_info), rrpriv->info, |
1383 | rrpriv->info_dma); | |
1da177e4 LT |
1384 | rrpriv->info = NULL; |
1385 | ||
0193fc5e | 1386 | free_irq(pdev->irq, dev); |
1da177e4 LT |
1387 | spin_unlock_irqrestore(&rrpriv->lock, flags); |
1388 | ||
1389 | return 0; | |
1390 | } | |
1391 | ||
1392 | ||
61357325 SH |
1393 | static netdev_tx_t rr_start_xmit(struct sk_buff *skb, |
1394 | struct net_device *dev) | |
1da177e4 LT |
1395 | { |
1396 | struct rr_private *rrpriv = netdev_priv(dev); | |
1397 | struct rr_regs __iomem *regs = rrpriv->regs; | |
6f1cf165 | 1398 | struct hippi_cb *hcb = (struct hippi_cb *) skb->cb; |
1da177e4 LT |
1399 | struct ring_ctrl *txctrl; |
1400 | unsigned long flags; | |
1401 | u32 index, len = skb->len; | |
1402 | u32 *ifield; | |
1403 | struct sk_buff *new_skb; | |
1404 | ||
1405 | if (readl(®s->Mode) & FATAL_ERR) | |
1406 | printk("error codes Fail1 %02x, Fail2 %02x\n", | |
1407 | readl(®s->Fail1), readl(®s->Fail2)); | |
1408 | ||
1409 | /* | |
1410 | * We probably need to deal with tbusy here to prevent overruns. | |
1411 | */ | |
1412 | ||
1413 | if (skb_headroom(skb) < 8){ | |
1414 | printk("incoming skb too small - reallocating\n"); | |
1415 | if (!(new_skb = dev_alloc_skb(len + 8))) { | |
1416 | dev_kfree_skb(skb); | |
1417 | netif_wake_queue(dev); | |
3790c8cd | 1418 | return NETDEV_TX_OK; |
1da177e4 LT |
1419 | } |
1420 | skb_reserve(new_skb, 8); | |
1421 | skb_put(new_skb, len); | |
d626f62b | 1422 | skb_copy_from_linear_data(skb, new_skb->data, len); |
1da177e4 LT |
1423 | dev_kfree_skb(skb); |
1424 | skb = new_skb; | |
1425 | } | |
1426 | ||
1427 | ifield = (u32 *)skb_push(skb, 8); | |
1428 | ||
1429 | ifield[0] = 0; | |
6f1cf165 | 1430 | ifield[1] = hcb->ifield; |
1da177e4 LT |
1431 | |
1432 | /* | |
1433 | * We don't need the lock before we are actually going to start | |
1434 | * fiddling with the control blocks. | |
1435 | */ | |
1436 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1437 | ||
1438 | txctrl = &rrpriv->info->tx_ctrl; | |
1439 | ||
1440 | index = txctrl->pi; | |
1441 | ||
1442 | rrpriv->tx_skbuff[index] = skb; | |
1443 | set_rraddr(&rrpriv->tx_ring[index].addr, pci_map_single( | |
1444 | rrpriv->pci_dev, skb->data, len + 8, PCI_DMA_TODEVICE)); | |
1445 | rrpriv->tx_ring[index].size = len + 8; /* include IFIELD */ | |
1446 | rrpriv->tx_ring[index].mode = PACKET_START | PACKET_END; | |
1447 | txctrl->pi = (index + 1) % TX_RING_ENTRIES; | |
1448 | wmb(); | |
1449 | writel(txctrl->pi, ®s->TxPi); | |
1450 | ||
1451 | if (txctrl->pi == rrpriv->dirty_tx){ | |
1452 | rrpriv->tx_full = 1; | |
1453 | netif_stop_queue(dev); | |
1454 | } | |
1455 | ||
1456 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1457 | ||
6ed10654 | 1458 | return NETDEV_TX_OK; |
1da177e4 LT |
1459 | } |
1460 | ||
1461 | ||
1da177e4 LT |
1462 | /* |
1463 | * Read the firmware out of the EEPROM and put it into the SRAM | |
1464 | * (or from user space - later) | |
1465 | * | |
1466 | * This operation requires the NIC to be halted and is performed with | |
1467 | * interrupts disabled and with the spinlock hold. | |
1468 | */ | |
1469 | static int rr_load_firmware(struct net_device *dev) | |
1470 | { | |
1471 | struct rr_private *rrpriv; | |
1472 | struct rr_regs __iomem *regs; | |
cf962378 | 1473 | size_t eptr, segptr; |
1da177e4 LT |
1474 | int i, j; |
1475 | u32 localctrl, sptr, len, tmp; | |
1476 | u32 p2len, p2size, nr_seg, revision, io, sram_size; | |
1da177e4 LT |
1477 | |
1478 | rrpriv = netdev_priv(dev); | |
1479 | regs = rrpriv->regs; | |
1480 | ||
1481 | if (dev->flags & IFF_UP) | |
1482 | return -EBUSY; | |
1483 | ||
1484 | if (!(readl(®s->HostCtrl) & NIC_HALTED)){ | |
6aa20a22 | 1485 | printk("%s: Trying to load firmware to a running NIC.\n", |
1da177e4 LT |
1486 | dev->name); |
1487 | return -EBUSY; | |
1488 | } | |
1489 | ||
1490 | localctrl = readl(®s->LocalCtrl); | |
1491 | writel(0, ®s->LocalCtrl); | |
1492 | ||
1493 | writel(0, ®s->EvtPrd); | |
1494 | writel(0, ®s->RxPrd); | |
1495 | writel(0, ®s->TxPrd); | |
1496 | ||
1497 | /* | |
1498 | * First wipe the entire SRAM, otherwise we might run into all | |
1499 | * kinds of trouble ... sigh, this took almost all afternoon | |
1500 | * to track down ;-( | |
1501 | */ | |
1502 | io = readl(®s->ExtIo); | |
1503 | writel(0, ®s->ExtIo); | |
cf962378 | 1504 | sram_size = rr_read_eeprom_word(rrpriv, 8); |
1da177e4 LT |
1505 | |
1506 | for (i = 200; i < sram_size / 4; i++){ | |
1507 | writel(i * 4, ®s->WinBase); | |
1508 | mb(); | |
1509 | writel(0, ®s->WinData); | |
1510 | mb(); | |
1511 | } | |
1512 | writel(io, ®s->ExtIo); | |
1513 | mb(); | |
1514 | ||
cf962378 AV |
1515 | eptr = rr_read_eeprom_word(rrpriv, |
1516 | offsetof(struct eeprom, rncd_info.AddrRunCodeSegs)); | |
1da177e4 LT |
1517 | eptr = ((eptr & 0x1fffff) >> 3); |
1518 | ||
cf962378 | 1519 | p2len = rr_read_eeprom_word(rrpriv, 0x83*4); |
1da177e4 | 1520 | p2len = (p2len << 2); |
cf962378 | 1521 | p2size = rr_read_eeprom_word(rrpriv, 0x84*4); |
1da177e4 LT |
1522 | p2size = ((p2size & 0x1fffff) >> 3); |
1523 | ||
1524 | if ((eptr < p2size) || (eptr > (p2size + p2len))){ | |
1525 | printk("%s: eptr is invalid\n", dev->name); | |
1526 | goto out; | |
1527 | } | |
1528 | ||
cf962378 AV |
1529 | revision = rr_read_eeprom_word(rrpriv, |
1530 | offsetof(struct eeprom, manf.HeaderFmt)); | |
1da177e4 LT |
1531 | |
1532 | if (revision != 1){ | |
1533 | printk("%s: invalid firmware format (%i)\n", | |
1534 | dev->name, revision); | |
1535 | goto out; | |
1536 | } | |
1537 | ||
cf962378 | 1538 | nr_seg = rr_read_eeprom_word(rrpriv, eptr); |
1da177e4 LT |
1539 | eptr +=4; |
1540 | #if (DEBUG > 1) | |
1541 | printk("%s: nr_seg %i\n", dev->name, nr_seg); | |
1542 | #endif | |
1543 | ||
1544 | for (i = 0; i < nr_seg; i++){ | |
cf962378 | 1545 | sptr = rr_read_eeprom_word(rrpriv, eptr); |
1da177e4 | 1546 | eptr += 4; |
cf962378 | 1547 | len = rr_read_eeprom_word(rrpriv, eptr); |
1da177e4 | 1548 | eptr += 4; |
cf962378 | 1549 | segptr = rr_read_eeprom_word(rrpriv, eptr); |
1da177e4 LT |
1550 | segptr = ((segptr & 0x1fffff) >> 3); |
1551 | eptr += 4; | |
1552 | #if (DEBUG > 1) | |
1553 | printk("%s: segment %i, sram address %06x, length %04x, segptr %06x\n", | |
1554 | dev->name, i, sptr, len, segptr); | |
1555 | #endif | |
1556 | for (j = 0; j < len; j++){ | |
cf962378 | 1557 | tmp = rr_read_eeprom_word(rrpriv, segptr); |
1da177e4 LT |
1558 | writel(sptr, ®s->WinBase); |
1559 | mb(); | |
1560 | writel(tmp, ®s->WinData); | |
1561 | mb(); | |
1562 | segptr += 4; | |
1563 | sptr += 4; | |
1564 | } | |
1565 | } | |
1566 | ||
1567 | out: | |
1568 | writel(localctrl, ®s->LocalCtrl); | |
1569 | mb(); | |
1570 | return 0; | |
1571 | } | |
1572 | ||
1573 | ||
1574 | static int rr_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1575 | { | |
1576 | struct rr_private *rrpriv; | |
1577 | unsigned char *image, *oldimage; | |
1578 | unsigned long flags; | |
1579 | unsigned int i; | |
1580 | int error = -EOPNOTSUPP; | |
1581 | ||
1582 | rrpriv = netdev_priv(dev); | |
1583 | ||
1584 | switch(cmd){ | |
1585 | case SIOCRRGFW: | |
1586 | if (!capable(CAP_SYS_RAWIO)){ | |
1587 | return -EPERM; | |
1588 | } | |
1589 | ||
1590 | image = kmalloc(EEPROM_WORDS * sizeof(u32), GFP_KERNEL); | |
e404decb | 1591 | if (!image) |
1da177e4 | 1592 | return -ENOMEM; |
1da177e4 LT |
1593 | |
1594 | if (rrpriv->fw_running){ | |
1595 | printk("%s: Firmware already running\n", dev->name); | |
1596 | error = -EPERM; | |
1597 | goto gf_out; | |
1598 | } | |
1599 | ||
1600 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1601 | i = rr_read_eeprom(rrpriv, 0, image, EEPROM_BYTES); | |
1602 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1603 | if (i != EEPROM_BYTES){ | |
1604 | printk(KERN_ERR "%s: Error reading EEPROM\n", | |
1605 | dev->name); | |
1606 | error = -EFAULT; | |
1607 | goto gf_out; | |
1608 | } | |
1609 | error = copy_to_user(rq->ifr_data, image, EEPROM_BYTES); | |
1610 | if (error) | |
1611 | error = -EFAULT; | |
1612 | gf_out: | |
1613 | kfree(image); | |
1614 | return error; | |
6aa20a22 | 1615 | |
1da177e4 LT |
1616 | case SIOCRRPFW: |
1617 | if (!capable(CAP_SYS_RAWIO)){ | |
1618 | return -EPERM; | |
1619 | } | |
1620 | ||
1621 | image = kmalloc(EEPROM_WORDS * sizeof(u32), GFP_KERNEL); | |
1622 | oldimage = kmalloc(EEPROM_WORDS * sizeof(u32), GFP_KERNEL); | |
1623 | if (!image || !oldimage) { | |
1da177e4 LT |
1624 | error = -ENOMEM; |
1625 | goto wf_out; | |
1626 | } | |
1627 | ||
1628 | error = copy_from_user(image, rq->ifr_data, EEPROM_BYTES); | |
1629 | if (error) { | |
1630 | error = -EFAULT; | |
1631 | goto wf_out; | |
1632 | } | |
1633 | ||
1634 | if (rrpriv->fw_running){ | |
1635 | printk("%s: Firmware already running\n", dev->name); | |
1636 | error = -EPERM; | |
1637 | goto wf_out; | |
1638 | } | |
1639 | ||
1640 | printk("%s: Updating EEPROM firmware\n", dev->name); | |
1641 | ||
1642 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1643 | error = write_eeprom(rrpriv, 0, image, EEPROM_BYTES); | |
1644 | if (error) | |
1645 | printk(KERN_ERR "%s: Error writing EEPROM\n", | |
1646 | dev->name); | |
1647 | ||
1648 | i = rr_read_eeprom(rrpriv, 0, oldimage, EEPROM_BYTES); | |
1649 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1650 | ||
1651 | if (i != EEPROM_BYTES) | |
1652 | printk(KERN_ERR "%s: Error reading back EEPROM " | |
1653 | "image\n", dev->name); | |
1654 | ||
1655 | error = memcmp(image, oldimage, EEPROM_BYTES); | |
1656 | if (error){ | |
1657 | printk(KERN_ERR "%s: Error verifying EEPROM image\n", | |
1658 | dev->name); | |
1659 | error = -EFAULT; | |
1660 | } | |
1661 | wf_out: | |
b4558ea9 JJ |
1662 | kfree(oldimage); |
1663 | kfree(image); | |
1da177e4 | 1664 | return error; |
6aa20a22 | 1665 | |
1da177e4 LT |
1666 | case SIOCRRID: |
1667 | return put_user(0x52523032, (int __user *)rq->ifr_data); | |
1668 | default: | |
1669 | return error; | |
1670 | } | |
1671 | } | |
1672 | ||
a3aa1884 | 1673 | static DEFINE_PCI_DEVICE_TABLE(rr_pci_tbl) = { |
1da177e4 LT |
1674 | { PCI_VENDOR_ID_ESSENTIAL, PCI_DEVICE_ID_ESSENTIAL_ROADRUNNER, |
1675 | PCI_ANY_ID, PCI_ANY_ID, }, | |
1676 | { 0,} | |
1677 | }; | |
1678 | MODULE_DEVICE_TABLE(pci, rr_pci_tbl); | |
1679 | ||
1680 | static struct pci_driver rr_driver = { | |
1681 | .name = "rrunner", | |
1682 | .id_table = rr_pci_tbl, | |
1683 | .probe = rr_init_one, | |
1684 | .remove = __devexit_p(rr_remove_one), | |
1685 | }; | |
1686 | ||
1687 | static int __init rr_init_module(void) | |
1688 | { | |
29917620 | 1689 | return pci_register_driver(&rr_driver); |
1da177e4 LT |
1690 | } |
1691 | ||
1692 | static void __exit rr_cleanup_module(void) | |
1693 | { | |
1694 | pci_unregister_driver(&rr_driver); | |
1695 | } | |
1696 | ||
1697 | module_init(rr_init_module); | |
1698 | module_exit(rr_cleanup_module); |