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 | ||
6e945491 | 64 | static char version[] = "rrunner.c: v0.50 11/11/2002 Jes Sorensen (jes@wildopensource.com)\n"; |
1da177e4 | 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 | ||
1dd06ae8 | 91 | static int rr_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) |
1da177e4 LT |
92 | { |
93 | struct net_device *dev; | |
94 | static int version_disp; | |
95 | u8 pci_latency; | |
96 | struct rr_private *rrpriv; | |
97 | void *tmpptr; | |
98 | dma_addr_t ring_dma; | |
99 | int ret = -ENOMEM; | |
100 | ||
101 | dev = alloc_hippi_dev(sizeof(struct rr_private)); | |
102 | if (!dev) | |
103 | goto out3; | |
104 | ||
105 | ret = pci_enable_device(pdev); | |
106 | if (ret) { | |
107 | ret = -ENODEV; | |
108 | goto out2; | |
109 | } | |
110 | ||
111 | rrpriv = netdev_priv(dev); | |
112 | ||
1da177e4 LT |
113 | SET_NETDEV_DEV(dev, &pdev->dev); |
114 | ||
0193fc5e FR |
115 | ret = pci_request_regions(pdev, "rrunner"); |
116 | if (ret < 0) | |
1da177e4 | 117 | goto out; |
1da177e4 LT |
118 | |
119 | pci_set_drvdata(pdev, dev); | |
120 | ||
121 | rrpriv->pci_dev = pdev; | |
122 | ||
123 | spin_lock_init(&rrpriv->lock); | |
124 | ||
748ff68f | 125 | dev->netdev_ops = &rr_netdev_ops; |
1da177e4 | 126 | |
1da177e4 LT |
127 | /* display version info if adapter is found */ |
128 | if (!version_disp) { | |
129 | /* set display flag to TRUE so that */ | |
130 | /* we only display this string ONCE */ | |
131 | version_disp = 1; | |
132 | printk(version); | |
133 | } | |
134 | ||
135 | pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &pci_latency); | |
136 | if (pci_latency <= 0x58){ | |
137 | pci_latency = 0x58; | |
138 | pci_write_config_byte(pdev, PCI_LATENCY_TIMER, pci_latency); | |
139 | } | |
140 | ||
141 | pci_set_master(pdev); | |
142 | ||
143 | printk(KERN_INFO "%s: Essential RoadRunner serial HIPPI " | |
ecffe75f RD |
144 | "at 0x%llx, irq %i, PCI latency %i\n", dev->name, |
145 | (unsigned long long)pci_resource_start(pdev, 0), | |
146 | pdev->irq, pci_latency); | |
1da177e4 LT |
147 | |
148 | /* | |
0193fc5e | 149 | * Remap the MMIO regs into kernel space. |
1da177e4 | 150 | */ |
0193fc5e FR |
151 | rrpriv->regs = pci_iomap(pdev, 0, 0x1000); |
152 | if (!rrpriv->regs) { | |
1da177e4 LT |
153 | printk(KERN_ERR "%s: Unable to map I/O register, " |
154 | "RoadRunner will be disabled.\n", dev->name); | |
155 | ret = -EIO; | |
156 | goto out; | |
157 | } | |
158 | ||
159 | tmpptr = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma); | |
160 | rrpriv->tx_ring = tmpptr; | |
161 | rrpriv->tx_ring_dma = ring_dma; | |
162 | ||
163 | if (!tmpptr) { | |
164 | ret = -ENOMEM; | |
165 | goto out; | |
166 | } | |
167 | ||
168 | tmpptr = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma); | |
169 | rrpriv->rx_ring = tmpptr; | |
170 | rrpriv->rx_ring_dma = ring_dma; | |
171 | ||
172 | if (!tmpptr) { | |
173 | ret = -ENOMEM; | |
174 | goto out; | |
175 | } | |
176 | ||
177 | tmpptr = pci_alloc_consistent(pdev, EVT_RING_SIZE, &ring_dma); | |
178 | rrpriv->evt_ring = tmpptr; | |
179 | rrpriv->evt_ring_dma = ring_dma; | |
180 | ||
181 | if (!tmpptr) { | |
182 | ret = -ENOMEM; | |
183 | goto out; | |
184 | } | |
185 | ||
186 | /* | |
187 | * Don't access any register before this point! | |
188 | */ | |
189 | #ifdef __BIG_ENDIAN | |
190 | writel(readl(&rrpriv->regs->HostCtrl) | NO_SWAP, | |
191 | &rrpriv->regs->HostCtrl); | |
192 | #endif | |
193 | /* | |
194 | * Need to add a case for little-endian 64-bit hosts here. | |
195 | */ | |
196 | ||
197 | rr_init(dev); | |
198 | ||
1da177e4 LT |
199 | ret = register_netdev(dev); |
200 | if (ret) | |
201 | goto out; | |
202 | return 0; | |
203 | ||
204 | out: | |
205 | if (rrpriv->rx_ring) | |
6aa20a22 | 206 | pci_free_consistent(pdev, RX_TOTAL_SIZE, rrpriv->rx_ring, |
1da177e4 LT |
207 | rrpriv->rx_ring_dma); |
208 | if (rrpriv->tx_ring) | |
209 | pci_free_consistent(pdev, TX_TOTAL_SIZE, rrpriv->tx_ring, | |
210 | rrpriv->tx_ring_dma); | |
211 | if (rrpriv->regs) | |
0193fc5e | 212 | pci_iounmap(pdev, rrpriv->regs); |
1da177e4 LT |
213 | if (pdev) { |
214 | pci_release_regions(pdev); | |
215 | pci_set_drvdata(pdev, NULL); | |
216 | } | |
217 | out2: | |
218 | free_netdev(dev); | |
219 | out3: | |
220 | return ret; | |
221 | } | |
222 | ||
6e945491 | 223 | static void rr_remove_one(struct pci_dev *pdev) |
1da177e4 LT |
224 | { |
225 | struct net_device *dev = pci_get_drvdata(pdev); | |
0193fc5e | 226 | struct rr_private *rr = netdev_priv(dev); |
1da177e4 | 227 | |
0193fc5e FR |
228 | if (!(readl(&rr->regs->HostCtrl) & NIC_HALTED)) { |
229 | printk(KERN_ERR "%s: trying to unload running NIC\n", | |
230 | dev->name); | |
231 | writel(HALT_NIC, &rr->regs->HostCtrl); | |
1da177e4 | 232 | } |
0193fc5e FR |
233 | |
234 | unregister_netdev(dev); | |
235 | pci_free_consistent(pdev, EVT_RING_SIZE, rr->evt_ring, | |
236 | rr->evt_ring_dma); | |
237 | pci_free_consistent(pdev, RX_TOTAL_SIZE, rr->rx_ring, | |
238 | rr->rx_ring_dma); | |
239 | pci_free_consistent(pdev, TX_TOTAL_SIZE, rr->tx_ring, | |
240 | rr->tx_ring_dma); | |
241 | pci_iounmap(pdev, rr->regs); | |
242 | pci_release_regions(pdev); | |
243 | pci_disable_device(pdev); | |
244 | pci_set_drvdata(pdev, NULL); | |
245 | free_netdev(dev); | |
1da177e4 LT |
246 | } |
247 | ||
248 | ||
249 | /* | |
250 | * Commands are considered to be slow, thus there is no reason to | |
251 | * inline this. | |
252 | */ | |
253 | static void rr_issue_cmd(struct rr_private *rrpriv, struct cmd *cmd) | |
254 | { | |
255 | struct rr_regs __iomem *regs; | |
256 | u32 idx; | |
257 | ||
258 | regs = rrpriv->regs; | |
259 | /* | |
260 | * This is temporary - it will go away in the final version. | |
261 | * We probably also want to make this function inline. | |
262 | */ | |
263 | if (readl(®s->HostCtrl) & NIC_HALTED){ | |
264 | printk("issuing command for halted NIC, code 0x%x, " | |
265 | "HostCtrl %08x\n", cmd->code, readl(®s->HostCtrl)); | |
266 | if (readl(®s->Mode) & FATAL_ERR) | |
267 | printk("error codes Fail1 %02x, Fail2 %02x\n", | |
268 | readl(®s->Fail1), readl(®s->Fail2)); | |
269 | } | |
270 | ||
271 | idx = rrpriv->info->cmd_ctrl.pi; | |
272 | ||
273 | writel(*(u32*)(cmd), ®s->CmdRing[idx]); | |
274 | wmb(); | |
275 | ||
276 | idx = (idx - 1) % CMD_RING_ENTRIES; | |
277 | rrpriv->info->cmd_ctrl.pi = idx; | |
278 | wmb(); | |
279 | ||
280 | if (readl(®s->Mode) & FATAL_ERR) | |
281 | printk("error code %02x\n", readl(®s->Fail1)); | |
282 | } | |
283 | ||
284 | ||
285 | /* | |
286 | * Reset the board in a sensible manner. The NIC is already halted | |
287 | * when we get here and a spin-lock is held. | |
288 | */ | |
289 | static int rr_reset(struct net_device *dev) | |
290 | { | |
291 | struct rr_private *rrpriv; | |
292 | struct rr_regs __iomem *regs; | |
1da177e4 LT |
293 | u32 start_pc; |
294 | int i; | |
295 | ||
296 | rrpriv = netdev_priv(dev); | |
297 | regs = rrpriv->regs; | |
298 | ||
299 | rr_load_firmware(dev); | |
300 | ||
301 | writel(0x01000000, ®s->TX_state); | |
302 | writel(0xff800000, ®s->RX_state); | |
303 | writel(0, ®s->AssistState); | |
304 | writel(CLEAR_INTA, ®s->LocalCtrl); | |
305 | writel(0x01, ®s->BrkPt); | |
306 | writel(0, ®s->Timer); | |
307 | writel(0, ®s->TimerRef); | |
308 | writel(RESET_DMA, ®s->DmaReadState); | |
309 | writel(RESET_DMA, ®s->DmaWriteState); | |
310 | writel(0, ®s->DmaWriteHostHi); | |
311 | writel(0, ®s->DmaWriteHostLo); | |
312 | writel(0, ®s->DmaReadHostHi); | |
313 | writel(0, ®s->DmaReadHostLo); | |
314 | writel(0, ®s->DmaReadLen); | |
315 | writel(0, ®s->DmaWriteLen); | |
316 | writel(0, ®s->DmaWriteLcl); | |
317 | writel(0, ®s->DmaWriteIPchecksum); | |
318 | writel(0, ®s->DmaReadLcl); | |
319 | writel(0, ®s->DmaReadIPchecksum); | |
320 | writel(0, ®s->PciState); | |
321 | #if (BITS_PER_LONG == 64) && defined __LITTLE_ENDIAN | |
322 | writel(SWAP_DATA | PTR64BIT | PTR_WD_SWAP, ®s->Mode); | |
323 | #elif (BITS_PER_LONG == 64) | |
324 | writel(SWAP_DATA | PTR64BIT | PTR_WD_NOSWAP, ®s->Mode); | |
325 | #else | |
326 | writel(SWAP_DATA | PTR32BIT | PTR_WD_NOSWAP, ®s->Mode); | |
327 | #endif | |
328 | ||
329 | #if 0 | |
330 | /* | |
331 | * Don't worry, this is just black magic. | |
332 | */ | |
333 | writel(0xdf000, ®s->RxBase); | |
334 | writel(0xdf000, ®s->RxPrd); | |
335 | writel(0xdf000, ®s->RxCon); | |
336 | writel(0xce000, ®s->TxBase); | |
337 | writel(0xce000, ®s->TxPrd); | |
338 | writel(0xce000, ®s->TxCon); | |
339 | writel(0, ®s->RxIndPro); | |
340 | writel(0, ®s->RxIndCon); | |
341 | writel(0, ®s->RxIndRef); | |
342 | writel(0, ®s->TxIndPro); | |
343 | writel(0, ®s->TxIndCon); | |
344 | writel(0, ®s->TxIndRef); | |
345 | writel(0xcc000, ®s->pad10[0]); | |
346 | writel(0, ®s->DrCmndPro); | |
347 | writel(0, ®s->DrCmndCon); | |
348 | writel(0, ®s->DwCmndPro); | |
349 | writel(0, ®s->DwCmndCon); | |
350 | writel(0, ®s->DwCmndRef); | |
351 | writel(0, ®s->DrDataPro); | |
352 | writel(0, ®s->DrDataCon); | |
353 | writel(0, ®s->DrDataRef); | |
354 | writel(0, ®s->DwDataPro); | |
355 | writel(0, ®s->DwDataCon); | |
356 | writel(0, ®s->DwDataRef); | |
357 | #endif | |
358 | ||
359 | writel(0xffffffff, ®s->MbEvent); | |
360 | writel(0, ®s->Event); | |
361 | ||
362 | writel(0, ®s->TxPi); | |
363 | writel(0, ®s->IpRxPi); | |
364 | ||
365 | writel(0, ®s->EvtCon); | |
366 | writel(0, ®s->EvtPrd); | |
367 | ||
368 | rrpriv->info->evt_ctrl.pi = 0; | |
369 | ||
370 | for (i = 0; i < CMD_RING_ENTRIES; i++) | |
371 | writel(0, ®s->CmdRing[i]); | |
372 | ||
373 | /* | |
374 | * Why 32 ? is this not cache line size dependent? | |
375 | */ | |
376 | writel(RBURST_64|WBURST_64, ®s->PciState); | |
377 | wmb(); | |
378 | ||
cf962378 AV |
379 | start_pc = rr_read_eeprom_word(rrpriv, |
380 | offsetof(struct eeprom, rncd_info.FwStart)); | |
1da177e4 LT |
381 | |
382 | #if (DEBUG > 1) | |
383 | printk("%s: Executing firmware at address 0x%06x\n", | |
384 | dev->name, start_pc); | |
385 | #endif | |
386 | ||
387 | writel(start_pc + 0x800, ®s->Pc); | |
388 | wmb(); | |
389 | udelay(5); | |
390 | ||
391 | writel(start_pc, ®s->Pc); | |
392 | wmb(); | |
393 | ||
394 | return 0; | |
395 | } | |
396 | ||
397 | ||
398 | /* | |
399 | * Read a string from the EEPROM. | |
400 | */ | |
401 | static unsigned int rr_read_eeprom(struct rr_private *rrpriv, | |
402 | unsigned long offset, | |
403 | unsigned char *buf, | |
404 | unsigned long length) | |
405 | { | |
406 | struct rr_regs __iomem *regs = rrpriv->regs; | |
407 | u32 misc, io, host, i; | |
408 | ||
409 | io = readl(®s->ExtIo); | |
410 | writel(0, ®s->ExtIo); | |
411 | misc = readl(®s->LocalCtrl); | |
412 | writel(0, ®s->LocalCtrl); | |
413 | host = readl(®s->HostCtrl); | |
414 | writel(host | HALT_NIC, ®s->HostCtrl); | |
415 | mb(); | |
416 | ||
417 | for (i = 0; i < length; i++){ | |
418 | writel((EEPROM_BASE + ((offset+i) << 3)), ®s->WinBase); | |
419 | mb(); | |
420 | buf[i] = (readl(®s->WinData) >> 24) & 0xff; | |
421 | mb(); | |
422 | } | |
423 | ||
424 | writel(host, ®s->HostCtrl); | |
425 | writel(misc, ®s->LocalCtrl); | |
426 | writel(io, ®s->ExtIo); | |
427 | mb(); | |
428 | return i; | |
429 | } | |
430 | ||
431 | ||
432 | /* | |
433 | * Shortcut to read one word (4 bytes) out of the EEPROM and convert | |
434 | * it to our CPU byte-order. | |
435 | */ | |
436 | static u32 rr_read_eeprom_word(struct rr_private *rrpriv, | |
cf962378 | 437 | size_t offset) |
1da177e4 | 438 | { |
cf962378 | 439 | __be32 word; |
1da177e4 | 440 | |
cf962378 AV |
441 | if ((rr_read_eeprom(rrpriv, offset, |
442 | (unsigned char *)&word, 4) == 4)) | |
1da177e4 LT |
443 | return be32_to_cpu(word); |
444 | return 0; | |
445 | } | |
446 | ||
447 | ||
448 | /* | |
449 | * Write a string to the EEPROM. | |
450 | * | |
451 | * This is only called when the firmware is not running. | |
452 | */ | |
453 | static unsigned int write_eeprom(struct rr_private *rrpriv, | |
454 | unsigned long offset, | |
455 | unsigned char *buf, | |
456 | unsigned long length) | |
457 | { | |
458 | struct rr_regs __iomem *regs = rrpriv->regs; | |
459 | u32 misc, io, data, i, j, ready, error = 0; | |
460 | ||
461 | io = readl(®s->ExtIo); | |
462 | writel(0, ®s->ExtIo); | |
463 | misc = readl(®s->LocalCtrl); | |
464 | writel(ENABLE_EEPROM_WRITE, ®s->LocalCtrl); | |
465 | mb(); | |
466 | ||
467 | for (i = 0; i < length; i++){ | |
468 | writel((EEPROM_BASE + ((offset+i) << 3)), ®s->WinBase); | |
469 | mb(); | |
470 | data = buf[i] << 24; | |
471 | /* | |
472 | * Only try to write the data if it is not the same | |
473 | * value already. | |
474 | */ | |
475 | if ((readl(®s->WinData) & 0xff000000) != data){ | |
476 | writel(data, ®s->WinData); | |
477 | ready = 0; | |
478 | j = 0; | |
479 | mb(); | |
480 | while(!ready){ | |
481 | udelay(20); | |
482 | if ((readl(®s->WinData) & 0xff000000) == | |
483 | data) | |
484 | ready = 1; | |
485 | mb(); | |
486 | if (j++ > 5000){ | |
487 | printk("data mismatch: %08x, " | |
488 | "WinData %08x\n", data, | |
489 | readl(®s->WinData)); | |
490 | ready = 1; | |
491 | error = 1; | |
492 | } | |
493 | } | |
494 | } | |
495 | } | |
496 | ||
497 | writel(misc, ®s->LocalCtrl); | |
498 | writel(io, ®s->ExtIo); | |
499 | mb(); | |
500 | ||
501 | return error; | |
502 | } | |
503 | ||
504 | ||
6e945491 | 505 | static int rr_init(struct net_device *dev) |
1da177e4 LT |
506 | { |
507 | struct rr_private *rrpriv; | |
508 | struct rr_regs __iomem *regs; | |
1da177e4 | 509 | u32 sram_size, rev; |
1da177e4 LT |
510 | |
511 | rrpriv = netdev_priv(dev); | |
512 | regs = rrpriv->regs; | |
513 | ||
514 | rev = readl(®s->FwRev); | |
515 | rrpriv->fw_rev = rev; | |
516 | if (rev > 0x00020024) | |
517 | printk(" Firmware revision: %i.%i.%i\n", (rev >> 16), | |
518 | ((rev >> 8) & 0xff), (rev & 0xff)); | |
519 | else if (rev >= 0x00020000) { | |
520 | printk(" Firmware revision: %i.%i.%i (2.0.37 or " | |
521 | "later is recommended)\n", (rev >> 16), | |
522 | ((rev >> 8) & 0xff), (rev & 0xff)); | |
523 | }else{ | |
524 | printk(" Firmware revision too old: %i.%i.%i, please " | |
525 | "upgrade to 2.0.37 or later.\n", | |
526 | (rev >> 16), ((rev >> 8) & 0xff), (rev & 0xff)); | |
527 | } | |
528 | ||
529 | #if (DEBUG > 2) | |
530 | printk(" Maximum receive rings %i\n", readl(®s->MaxRxRng)); | |
531 | #endif | |
532 | ||
533 | /* | |
534 | * Read the hardware address from the eeprom. The HW address | |
535 | * is not really necessary for HIPPI but awfully convenient. | |
536 | * The pointer arithmetic to put it in dev_addr is ugly, but | |
537 | * Donald Becker does it this way for the GigE version of this | |
538 | * card and it's shorter and more portable than any | |
539 | * other method I've seen. -VAL | |
540 | */ | |
541 | ||
cf962378 AV |
542 | *(__be16 *)(dev->dev_addr) = |
543 | htons(rr_read_eeprom_word(rrpriv, offsetof(struct eeprom, manf.BoardULA))); | |
544 | *(__be32 *)(dev->dev_addr+2) = | |
545 | htonl(rr_read_eeprom_word(rrpriv, offsetof(struct eeprom, manf.BoardULA[4]))); | |
6aa20a22 | 546 | |
e174961c | 547 | printk(" MAC: %pM\n", dev->dev_addr); |
1da177e4 | 548 | |
cf962378 | 549 | sram_size = rr_read_eeprom_word(rrpriv, 8); |
1da177e4 LT |
550 | printk(" SRAM size 0x%06x\n", sram_size); |
551 | ||
1da177e4 LT |
552 | return 0; |
553 | } | |
554 | ||
555 | ||
556 | static int rr_init1(struct net_device *dev) | |
557 | { | |
558 | struct rr_private *rrpriv; | |
559 | struct rr_regs __iomem *regs; | |
560 | unsigned long myjif, flags; | |
561 | struct cmd cmd; | |
562 | u32 hostctrl; | |
563 | int ecode = 0; | |
564 | short i; | |
565 | ||
566 | rrpriv = netdev_priv(dev); | |
567 | regs = rrpriv->regs; | |
568 | ||
569 | spin_lock_irqsave(&rrpriv->lock, flags); | |
570 | ||
571 | hostctrl = readl(®s->HostCtrl); | |
572 | writel(hostctrl | HALT_NIC | RR_CLEAR_INT, ®s->HostCtrl); | |
573 | wmb(); | |
574 | ||
575 | if (hostctrl & PARITY_ERR){ | |
576 | printk("%s: Parity error halting NIC - this is serious!\n", | |
577 | dev->name); | |
578 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
579 | ecode = -EFAULT; | |
580 | goto error; | |
581 | } | |
582 | ||
583 | set_rxaddr(regs, rrpriv->rx_ctrl_dma); | |
584 | set_infoaddr(regs, rrpriv->info_dma); | |
585 | ||
586 | rrpriv->info->evt_ctrl.entry_size = sizeof(struct event); | |
587 | rrpriv->info->evt_ctrl.entries = EVT_RING_ENTRIES; | |
588 | rrpriv->info->evt_ctrl.mode = 0; | |
589 | rrpriv->info->evt_ctrl.pi = 0; | |
590 | set_rraddr(&rrpriv->info->evt_ctrl.rngptr, rrpriv->evt_ring_dma); | |
591 | ||
592 | rrpriv->info->cmd_ctrl.entry_size = sizeof(struct cmd); | |
593 | rrpriv->info->cmd_ctrl.entries = CMD_RING_ENTRIES; | |
594 | rrpriv->info->cmd_ctrl.mode = 0; | |
595 | rrpriv->info->cmd_ctrl.pi = 15; | |
596 | ||
597 | for (i = 0; i < CMD_RING_ENTRIES; i++) { | |
598 | writel(0, ®s->CmdRing[i]); | |
599 | } | |
600 | ||
601 | for (i = 0; i < TX_RING_ENTRIES; i++) { | |
602 | rrpriv->tx_ring[i].size = 0; | |
603 | set_rraddr(&rrpriv->tx_ring[i].addr, 0); | |
604 | rrpriv->tx_skbuff[i] = NULL; | |
605 | } | |
606 | rrpriv->info->tx_ctrl.entry_size = sizeof(struct tx_desc); | |
607 | rrpriv->info->tx_ctrl.entries = TX_RING_ENTRIES; | |
608 | rrpriv->info->tx_ctrl.mode = 0; | |
609 | rrpriv->info->tx_ctrl.pi = 0; | |
610 | set_rraddr(&rrpriv->info->tx_ctrl.rngptr, rrpriv->tx_ring_dma); | |
611 | ||
612 | /* | |
613 | * Set dirty_tx before we start receiving interrupts, otherwise | |
614 | * the interrupt handler might think it is supposed to process | |
615 | * tx ints before we are up and running, which may cause a null | |
616 | * pointer access in the int handler. | |
617 | */ | |
618 | rrpriv->tx_full = 0; | |
619 | rrpriv->cur_rx = 0; | |
620 | rrpriv->dirty_rx = rrpriv->dirty_tx = 0; | |
621 | ||
622 | rr_reset(dev); | |
623 | ||
624 | /* Tuning values */ | |
625 | writel(0x5000, ®s->ConRetry); | |
626 | writel(0x100, ®s->ConRetryTmr); | |
627 | writel(0x500000, ®s->ConTmout); | |
628 | writel(0x60, ®s->IntrTmr); | |
629 | writel(0x500000, ®s->TxDataMvTimeout); | |
630 | writel(0x200000, ®s->RxDataMvTimeout); | |
631 | writel(0x80, ®s->WriteDmaThresh); | |
632 | writel(0x80, ®s->ReadDmaThresh); | |
633 | ||
634 | rrpriv->fw_running = 0; | |
635 | wmb(); | |
636 | ||
637 | hostctrl &= ~(HALT_NIC | INVALID_INST_B | PARITY_ERR); | |
638 | writel(hostctrl, ®s->HostCtrl); | |
639 | wmb(); | |
640 | ||
641 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
642 | ||
643 | for (i = 0; i < RX_RING_ENTRIES; i++) { | |
644 | struct sk_buff *skb; | |
645 | dma_addr_t addr; | |
646 | ||
647 | rrpriv->rx_ring[i].mode = 0; | |
648 | skb = alloc_skb(dev->mtu + HIPPI_HLEN, GFP_ATOMIC); | |
649 | if (!skb) { | |
650 | printk(KERN_WARNING "%s: Unable to allocate memory " | |
651 | "for receive ring - halting NIC\n", dev->name); | |
652 | ecode = -ENOMEM; | |
653 | goto error; | |
654 | } | |
655 | rrpriv->rx_skbuff[i] = skb; | |
656 | addr = pci_map_single(rrpriv->pci_dev, skb->data, | |
657 | dev->mtu + HIPPI_HLEN, PCI_DMA_FROMDEVICE); | |
658 | /* | |
659 | * Sanity test to see if we conflict with the DMA | |
660 | * limitations of the Roadrunner. | |
661 | */ | |
662 | if ((((unsigned long)skb->data) & 0xfff) > ~65320) | |
663 | printk("skb alloc error\n"); | |
664 | ||
665 | set_rraddr(&rrpriv->rx_ring[i].addr, addr); | |
666 | rrpriv->rx_ring[i].size = dev->mtu + HIPPI_HLEN; | |
667 | } | |
668 | ||
669 | rrpriv->rx_ctrl[4].entry_size = sizeof(struct rx_desc); | |
670 | rrpriv->rx_ctrl[4].entries = RX_RING_ENTRIES; | |
671 | rrpriv->rx_ctrl[4].mode = 8; | |
672 | rrpriv->rx_ctrl[4].pi = 0; | |
673 | wmb(); | |
674 | set_rraddr(&rrpriv->rx_ctrl[4].rngptr, rrpriv->rx_ring_dma); | |
675 | ||
676 | udelay(1000); | |
677 | ||
678 | /* | |
679 | * Now start the FirmWare. | |
680 | */ | |
681 | cmd.code = C_START_FW; | |
682 | cmd.ring = 0; | |
683 | cmd.index = 0; | |
684 | ||
685 | rr_issue_cmd(rrpriv, &cmd); | |
686 | ||
687 | /* | |
688 | * Give the FirmWare time to chew on the `get running' command. | |
689 | */ | |
690 | myjif = jiffies + 5 * HZ; | |
691 | while (time_before(jiffies, myjif) && !rrpriv->fw_running) | |
692 | cpu_relax(); | |
693 | ||
694 | netif_start_queue(dev); | |
695 | ||
696 | return ecode; | |
697 | ||
698 | error: | |
699 | /* | |
700 | * We might have gotten here because we are out of memory, | |
701 | * make sure we release everything we allocated before failing | |
702 | */ | |
703 | for (i = 0; i < RX_RING_ENTRIES; i++) { | |
704 | struct sk_buff *skb = rrpriv->rx_skbuff[i]; | |
705 | ||
706 | if (skb) { | |
6aa20a22 JG |
707 | pci_unmap_single(rrpriv->pci_dev, |
708 | rrpriv->rx_ring[i].addr.addrlo, | |
1da177e4 LT |
709 | dev->mtu + HIPPI_HLEN, |
710 | PCI_DMA_FROMDEVICE); | |
711 | rrpriv->rx_ring[i].size = 0; | |
712 | set_rraddr(&rrpriv->rx_ring[i].addr, 0); | |
713 | dev_kfree_skb(skb); | |
714 | rrpriv->rx_skbuff[i] = NULL; | |
715 | } | |
716 | } | |
717 | return ecode; | |
718 | } | |
719 | ||
720 | ||
721 | /* | |
722 | * All events are considered to be slow (RX/TX ints do not generate | |
723 | * events) and are handled here, outside the main interrupt handler, | |
724 | * to reduce the size of the handler. | |
725 | */ | |
726 | static u32 rr_handle_event(struct net_device *dev, u32 prodidx, u32 eidx) | |
727 | { | |
728 | struct rr_private *rrpriv; | |
729 | struct rr_regs __iomem *regs; | |
730 | u32 tmp; | |
731 | ||
732 | rrpriv = netdev_priv(dev); | |
733 | regs = rrpriv->regs; | |
734 | ||
735 | while (prodidx != eidx){ | |
736 | switch (rrpriv->evt_ring[eidx].code){ | |
737 | case E_NIC_UP: | |
738 | tmp = readl(®s->FwRev); | |
739 | printk(KERN_INFO "%s: Firmware revision %i.%i.%i " | |
740 | "up and running\n", dev->name, | |
741 | (tmp >> 16), ((tmp >> 8) & 0xff), (tmp & 0xff)); | |
742 | rrpriv->fw_running = 1; | |
743 | writel(RX_RING_ENTRIES - 1, ®s->IpRxPi); | |
744 | wmb(); | |
745 | break; | |
746 | case E_LINK_ON: | |
747 | printk(KERN_INFO "%s: Optical link ON\n", dev->name); | |
748 | break; | |
749 | case E_LINK_OFF: | |
750 | printk(KERN_INFO "%s: Optical link OFF\n", dev->name); | |
751 | break; | |
752 | case E_RX_IDLE: | |
753 | printk(KERN_WARNING "%s: RX data not moving\n", | |
754 | dev->name); | |
755 | goto drop; | |
756 | case E_WATCHDOG: | |
757 | printk(KERN_INFO "%s: The watchdog is here to see " | |
758 | "us\n", dev->name); | |
759 | break; | |
760 | case E_INTERN_ERR: | |
761 | printk(KERN_ERR "%s: HIPPI Internal NIC error\n", | |
762 | dev->name); | |
6aa20a22 | 763 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
764 | ®s->HostCtrl); |
765 | wmb(); | |
766 | break; | |
767 | case E_HOST_ERR: | |
768 | printk(KERN_ERR "%s: Host software error\n", | |
769 | dev->name); | |
6aa20a22 | 770 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
771 | ®s->HostCtrl); |
772 | wmb(); | |
773 | break; | |
774 | /* | |
775 | * TX events. | |
776 | */ | |
777 | case E_CON_REJ: | |
778 | printk(KERN_WARNING "%s: Connection rejected\n", | |
779 | dev->name); | |
09f75cd7 | 780 | dev->stats.tx_aborted_errors++; |
1da177e4 LT |
781 | break; |
782 | case E_CON_TMOUT: | |
783 | printk(KERN_WARNING "%s: Connection timeout\n", | |
784 | dev->name); | |
785 | break; | |
786 | case E_DISC_ERR: | |
787 | printk(KERN_WARNING "%s: HIPPI disconnect error\n", | |
788 | dev->name); | |
09f75cd7 | 789 | dev->stats.tx_aborted_errors++; |
1da177e4 LT |
790 | break; |
791 | case E_INT_PRTY: | |
792 | printk(KERN_ERR "%s: HIPPI Internal Parity error\n", | |
793 | dev->name); | |
6aa20a22 | 794 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
795 | ®s->HostCtrl); |
796 | wmb(); | |
797 | break; | |
798 | case E_TX_IDLE: | |
799 | printk(KERN_WARNING "%s: Transmitter idle\n", | |
800 | dev->name); | |
801 | break; | |
802 | case E_TX_LINK_DROP: | |
803 | printk(KERN_WARNING "%s: Link lost during transmit\n", | |
804 | dev->name); | |
09f75cd7 | 805 | dev->stats.tx_aborted_errors++; |
6aa20a22 | 806 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
807 | ®s->HostCtrl); |
808 | wmb(); | |
809 | break; | |
810 | case E_TX_INV_RNG: | |
811 | printk(KERN_ERR "%s: Invalid send ring block\n", | |
812 | dev->name); | |
6aa20a22 | 813 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
814 | ®s->HostCtrl); |
815 | wmb(); | |
816 | break; | |
817 | case E_TX_INV_BUF: | |
818 | printk(KERN_ERR "%s: Invalid send buffer address\n", | |
819 | dev->name); | |
6aa20a22 | 820 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
821 | ®s->HostCtrl); |
822 | wmb(); | |
823 | break; | |
824 | case E_TX_INV_DSC: | |
825 | printk(KERN_ERR "%s: Invalid descriptor address\n", | |
826 | dev->name); | |
6aa20a22 | 827 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
828 | ®s->HostCtrl); |
829 | wmb(); | |
830 | break; | |
831 | /* | |
832 | * RX events. | |
833 | */ | |
834 | case E_RX_RNG_OUT: | |
835 | printk(KERN_INFO "%s: Receive ring full\n", dev->name); | |
836 | break; | |
837 | ||
838 | case E_RX_PAR_ERR: | |
839 | printk(KERN_WARNING "%s: Receive parity error\n", | |
840 | dev->name); | |
841 | goto drop; | |
842 | case E_RX_LLRC_ERR: | |
843 | printk(KERN_WARNING "%s: Receive LLRC error\n", | |
844 | dev->name); | |
845 | goto drop; | |
846 | case E_PKT_LN_ERR: | |
847 | printk(KERN_WARNING "%s: Receive packet length " | |
848 | "error\n", dev->name); | |
849 | goto drop; | |
850 | case E_DTA_CKSM_ERR: | |
851 | printk(KERN_WARNING "%s: Data checksum error\n", | |
852 | dev->name); | |
853 | goto drop; | |
854 | case E_SHT_BST: | |
855 | printk(KERN_WARNING "%s: Unexpected short burst " | |
856 | "error\n", dev->name); | |
857 | goto drop; | |
858 | case E_STATE_ERR: | |
859 | printk(KERN_WARNING "%s: Recv. state transition" | |
860 | " error\n", dev->name); | |
861 | goto drop; | |
862 | case E_UNEXP_DATA: | |
863 | printk(KERN_WARNING "%s: Unexpected data error\n", | |
864 | dev->name); | |
865 | goto drop; | |
866 | case E_LST_LNK_ERR: | |
867 | printk(KERN_WARNING "%s: Link lost error\n", | |
868 | dev->name); | |
869 | goto drop; | |
870 | case E_FRM_ERR: | |
871 | printk(KERN_WARNING "%s: Framming Error\n", | |
872 | dev->name); | |
873 | goto drop; | |
874 | case E_FLG_SYN_ERR: | |
2450022a | 875 | printk(KERN_WARNING "%s: Flag sync. lost during " |
1da177e4 LT |
876 | "packet\n", dev->name); |
877 | goto drop; | |
878 | case E_RX_INV_BUF: | |
879 | printk(KERN_ERR "%s: Invalid receive buffer " | |
880 | "address\n", dev->name); | |
6aa20a22 | 881 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
882 | ®s->HostCtrl); |
883 | wmb(); | |
884 | break; | |
885 | case E_RX_INV_DSC: | |
886 | printk(KERN_ERR "%s: Invalid receive descriptor " | |
887 | "address\n", dev->name); | |
6aa20a22 | 888 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
889 | ®s->HostCtrl); |
890 | wmb(); | |
891 | break; | |
892 | case E_RNG_BLK: | |
893 | printk(KERN_ERR "%s: Invalid ring block\n", | |
894 | dev->name); | |
6aa20a22 | 895 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
896 | ®s->HostCtrl); |
897 | wmb(); | |
898 | break; | |
899 | drop: | |
900 | /* Label packet to be dropped. | |
901 | * Actual dropping occurs in rx | |
902 | * handling. | |
903 | * | |
904 | * The index of packet we get to drop is | |
905 | * the index of the packet following | |
906 | * the bad packet. -kbf | |
907 | */ | |
908 | { | |
909 | u16 index = rrpriv->evt_ring[eidx].index; | |
910 | index = (index + (RX_RING_ENTRIES - 1)) % | |
911 | RX_RING_ENTRIES; | |
912 | rrpriv->rx_ring[index].mode |= | |
913 | (PACKET_BAD | PACKET_END); | |
914 | } | |
915 | break; | |
916 | default: | |
917 | printk(KERN_WARNING "%s: Unhandled event 0x%02x\n", | |
918 | dev->name, rrpriv->evt_ring[eidx].code); | |
919 | } | |
920 | eidx = (eidx + 1) % EVT_RING_ENTRIES; | |
921 | } | |
922 | ||
923 | rrpriv->info->evt_ctrl.pi = eidx; | |
924 | wmb(); | |
925 | return eidx; | |
926 | } | |
927 | ||
928 | ||
929 | static void rx_int(struct net_device *dev, u32 rxlimit, u32 index) | |
930 | { | |
931 | struct rr_private *rrpriv = netdev_priv(dev); | |
932 | struct rr_regs __iomem *regs = rrpriv->regs; | |
933 | ||
934 | do { | |
935 | struct rx_desc *desc; | |
936 | u32 pkt_len; | |
937 | ||
938 | desc = &(rrpriv->rx_ring[index]); | |
939 | pkt_len = desc->size; | |
940 | #if (DEBUG > 2) | |
941 | printk("index %i, rxlimit %i\n", index, rxlimit); | |
942 | printk("len %x, mode %x\n", pkt_len, desc->mode); | |
943 | #endif | |
944 | if ( (rrpriv->rx_ring[index].mode & PACKET_BAD) == PACKET_BAD){ | |
09f75cd7 | 945 | dev->stats.rx_dropped++; |
1da177e4 LT |
946 | goto defer; |
947 | } | |
948 | ||
949 | if (pkt_len > 0){ | |
950 | struct sk_buff *skb, *rx_skb; | |
951 | ||
952 | rx_skb = rrpriv->rx_skbuff[index]; | |
953 | ||
954 | if (pkt_len < PKT_COPY_THRESHOLD) { | |
955 | skb = alloc_skb(pkt_len, GFP_ATOMIC); | |
956 | if (skb == NULL){ | |
957 | printk(KERN_WARNING "%s: Unable to allocate skb (%i bytes), deferring packet\n", dev->name, pkt_len); | |
09f75cd7 | 958 | dev->stats.rx_dropped++; |
1da177e4 LT |
959 | goto defer; |
960 | } else { | |
961 | pci_dma_sync_single_for_cpu(rrpriv->pci_dev, | |
962 | desc->addr.addrlo, | |
963 | pkt_len, | |
964 | PCI_DMA_FROMDEVICE); | |
965 | ||
966 | memcpy(skb_put(skb, pkt_len), | |
967 | rx_skb->data, pkt_len); | |
968 | ||
969 | pci_dma_sync_single_for_device(rrpriv->pci_dev, | |
970 | desc->addr.addrlo, | |
971 | pkt_len, | |
972 | PCI_DMA_FROMDEVICE); | |
973 | } | |
974 | }else{ | |
975 | struct sk_buff *newskb; | |
976 | ||
977 | newskb = alloc_skb(dev->mtu + HIPPI_HLEN, | |
978 | GFP_ATOMIC); | |
979 | if (newskb){ | |
980 | dma_addr_t addr; | |
981 | ||
6aa20a22 JG |
982 | pci_unmap_single(rrpriv->pci_dev, |
983 | desc->addr.addrlo, dev->mtu + | |
1da177e4 LT |
984 | HIPPI_HLEN, PCI_DMA_FROMDEVICE); |
985 | skb = rx_skb; | |
986 | skb_put(skb, pkt_len); | |
987 | rrpriv->rx_skbuff[index] = newskb; | |
6aa20a22 JG |
988 | addr = pci_map_single(rrpriv->pci_dev, |
989 | newskb->data, | |
990 | dev->mtu + HIPPI_HLEN, | |
1da177e4 LT |
991 | PCI_DMA_FROMDEVICE); |
992 | set_rraddr(&desc->addr, addr); | |
993 | } else { | |
994 | printk("%s: Out of memory, deferring " | |
995 | "packet\n", dev->name); | |
09f75cd7 | 996 | dev->stats.rx_dropped++; |
1da177e4 LT |
997 | goto defer; |
998 | } | |
999 | } | |
1da177e4 LT |
1000 | skb->protocol = hippi_type_trans(skb, dev); |
1001 | ||
1002 | netif_rx(skb); /* send it up */ | |
1003 | ||
09f75cd7 JG |
1004 | dev->stats.rx_packets++; |
1005 | dev->stats.rx_bytes += pkt_len; | |
1da177e4 LT |
1006 | } |
1007 | defer: | |
1008 | desc->mode = 0; | |
1009 | desc->size = dev->mtu + HIPPI_HLEN; | |
1010 | ||
1011 | if ((index & 7) == 7) | |
1012 | writel(index, ®s->IpRxPi); | |
1013 | ||
1014 | index = (index + 1) % RX_RING_ENTRIES; | |
1015 | } while(index != rxlimit); | |
1016 | ||
1017 | rrpriv->cur_rx = index; | |
1018 | wmb(); | |
1019 | } | |
1020 | ||
1021 | ||
7d12e780 | 1022 | static irqreturn_t rr_interrupt(int irq, void *dev_id) |
1da177e4 LT |
1023 | { |
1024 | struct rr_private *rrpriv; | |
1025 | struct rr_regs __iomem *regs; | |
1026 | struct net_device *dev = (struct net_device *)dev_id; | |
1027 | u32 prodidx, rxindex, eidx, txcsmr, rxlimit, txcon; | |
1028 | ||
1029 | rrpriv = netdev_priv(dev); | |
1030 | regs = rrpriv->regs; | |
1031 | ||
1032 | if (!(readl(®s->HostCtrl) & RR_INT)) | |
1033 | return IRQ_NONE; | |
1034 | ||
1035 | spin_lock(&rrpriv->lock); | |
1036 | ||
1037 | prodidx = readl(®s->EvtPrd); | |
1038 | txcsmr = (prodidx >> 8) & 0xff; | |
1039 | rxlimit = (prodidx >> 16) & 0xff; | |
1040 | prodidx &= 0xff; | |
1041 | ||
1042 | #if (DEBUG > 2) | |
1043 | printk("%s: interrupt, prodidx = %i, eidx = %i\n", dev->name, | |
1044 | prodidx, rrpriv->info->evt_ctrl.pi); | |
1045 | #endif | |
1046 | /* | |
1047 | * Order here is important. We must handle events | |
1048 | * before doing anything else in order to catch | |
1049 | * such things as LLRC errors, etc -kbf | |
1050 | */ | |
1051 | ||
1052 | eidx = rrpriv->info->evt_ctrl.pi; | |
1053 | if (prodidx != eidx) | |
1054 | eidx = rr_handle_event(dev, prodidx, eidx); | |
1055 | ||
1056 | rxindex = rrpriv->cur_rx; | |
1057 | if (rxindex != rxlimit) | |
1058 | rx_int(dev, rxlimit, rxindex); | |
1059 | ||
1060 | txcon = rrpriv->dirty_tx; | |
1061 | if (txcsmr != txcon) { | |
1062 | do { | |
1063 | /* Due to occational firmware TX producer/consumer out | |
1064 | * of sync. error need to check entry in ring -kbf | |
1065 | */ | |
1066 | if(rrpriv->tx_skbuff[txcon]){ | |
1067 | struct tx_desc *desc; | |
1068 | struct sk_buff *skb; | |
1069 | ||
1070 | desc = &(rrpriv->tx_ring[txcon]); | |
1071 | skb = rrpriv->tx_skbuff[txcon]; | |
1072 | ||
09f75cd7 JG |
1073 | dev->stats.tx_packets++; |
1074 | dev->stats.tx_bytes += skb->len; | |
1da177e4 LT |
1075 | |
1076 | pci_unmap_single(rrpriv->pci_dev, | |
1077 | desc->addr.addrlo, skb->len, | |
1078 | PCI_DMA_TODEVICE); | |
1079 | dev_kfree_skb_irq(skb); | |
1080 | ||
1081 | rrpriv->tx_skbuff[txcon] = NULL; | |
1082 | desc->size = 0; | |
1083 | set_rraddr(&rrpriv->tx_ring[txcon].addr, 0); | |
1084 | desc->mode = 0; | |
1085 | } | |
1086 | txcon = (txcon + 1) % TX_RING_ENTRIES; | |
1087 | } while (txcsmr != txcon); | |
1088 | wmb(); | |
1089 | ||
1090 | rrpriv->dirty_tx = txcon; | |
1091 | if (rrpriv->tx_full && rr_if_busy(dev) && | |
1092 | (((rrpriv->info->tx_ctrl.pi + 1) % TX_RING_ENTRIES) | |
1093 | != rrpriv->dirty_tx)){ | |
1094 | rrpriv->tx_full = 0; | |
1095 | netif_wake_queue(dev); | |
1096 | } | |
1097 | } | |
1098 | ||
1099 | eidx |= ((txcsmr << 8) | (rxlimit << 16)); | |
1100 | writel(eidx, ®s->EvtCon); | |
1101 | wmb(); | |
1102 | ||
1103 | spin_unlock(&rrpriv->lock); | |
1104 | return IRQ_HANDLED; | |
1105 | } | |
1106 | ||
1107 | static inline void rr_raz_tx(struct rr_private *rrpriv, | |
1108 | struct net_device *dev) | |
1109 | { | |
1110 | int i; | |
1111 | ||
1112 | for (i = 0; i < TX_RING_ENTRIES; i++) { | |
1113 | struct sk_buff *skb = rrpriv->tx_skbuff[i]; | |
1114 | ||
1115 | if (skb) { | |
1116 | struct tx_desc *desc = &(rrpriv->tx_ring[i]); | |
1117 | ||
1118 | pci_unmap_single(rrpriv->pci_dev, desc->addr.addrlo, | |
1119 | skb->len, PCI_DMA_TODEVICE); | |
1120 | desc->size = 0; | |
1121 | set_rraddr(&desc->addr, 0); | |
1122 | dev_kfree_skb(skb); | |
1123 | rrpriv->tx_skbuff[i] = NULL; | |
1124 | } | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | ||
1129 | static inline void rr_raz_rx(struct rr_private *rrpriv, | |
1130 | struct net_device *dev) | |
1131 | { | |
1132 | int i; | |
1133 | ||
1134 | for (i = 0; i < RX_RING_ENTRIES; i++) { | |
1135 | struct sk_buff *skb = rrpriv->rx_skbuff[i]; | |
1136 | ||
1137 | if (skb) { | |
1138 | struct rx_desc *desc = &(rrpriv->rx_ring[i]); | |
1139 | ||
1140 | pci_unmap_single(rrpriv->pci_dev, desc->addr.addrlo, | |
1141 | dev->mtu + HIPPI_HLEN, PCI_DMA_FROMDEVICE); | |
1142 | desc->size = 0; | |
1143 | set_rraddr(&desc->addr, 0); | |
1144 | dev_kfree_skb(skb); | |
1145 | rrpriv->rx_skbuff[i] = NULL; | |
1146 | } | |
1147 | } | |
1148 | } | |
1149 | ||
1150 | static void rr_timer(unsigned long data) | |
1151 | { | |
1152 | struct net_device *dev = (struct net_device *)data; | |
1153 | struct rr_private *rrpriv = netdev_priv(dev); | |
1154 | struct rr_regs __iomem *regs = rrpriv->regs; | |
1155 | unsigned long flags; | |
1156 | ||
1157 | if (readl(®s->HostCtrl) & NIC_HALTED){ | |
1158 | printk("%s: Restarting nic\n", dev->name); | |
1159 | memset(rrpriv->rx_ctrl, 0, 256 * sizeof(struct ring_ctrl)); | |
1160 | memset(rrpriv->info, 0, sizeof(struct rr_info)); | |
1161 | wmb(); | |
1162 | ||
1163 | rr_raz_tx(rrpriv, dev); | |
1164 | rr_raz_rx(rrpriv, dev); | |
1165 | ||
1166 | if (rr_init1(dev)) { | |
1167 | spin_lock_irqsave(&rrpriv->lock, flags); | |
6aa20a22 | 1168 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, |
1da177e4 LT |
1169 | ®s->HostCtrl); |
1170 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1171 | } | |
1172 | } | |
1173 | rrpriv->timer.expires = RUN_AT(5*HZ); | |
1174 | add_timer(&rrpriv->timer); | |
1175 | } | |
1176 | ||
1177 | ||
1178 | static int rr_open(struct net_device *dev) | |
1179 | { | |
1180 | struct rr_private *rrpriv = netdev_priv(dev); | |
1181 | struct pci_dev *pdev = rrpriv->pci_dev; | |
1182 | struct rr_regs __iomem *regs; | |
1183 | int ecode = 0; | |
1184 | unsigned long flags; | |
1185 | dma_addr_t dma_addr; | |
1186 | ||
1187 | regs = rrpriv->regs; | |
1188 | ||
1189 | if (rrpriv->fw_rev < 0x00020000) { | |
1190 | printk(KERN_WARNING "%s: trying to configure device with " | |
1191 | "obsolete firmware\n", dev->name); | |
1192 | ecode = -EBUSY; | |
1193 | goto error; | |
1194 | } | |
1195 | ||
1196 | rrpriv->rx_ctrl = pci_alloc_consistent(pdev, | |
1197 | 256 * sizeof(struct ring_ctrl), | |
1198 | &dma_addr); | |
1199 | if (!rrpriv->rx_ctrl) { | |
1200 | ecode = -ENOMEM; | |
1201 | goto error; | |
1202 | } | |
1203 | rrpriv->rx_ctrl_dma = dma_addr; | |
1204 | memset(rrpriv->rx_ctrl, 0, 256*sizeof(struct ring_ctrl)); | |
1205 | ||
1206 | rrpriv->info = pci_alloc_consistent(pdev, sizeof(struct rr_info), | |
1207 | &dma_addr); | |
1208 | if (!rrpriv->info) { | |
1209 | ecode = -ENOMEM; | |
1210 | goto error; | |
1211 | } | |
1212 | rrpriv->info_dma = dma_addr; | |
1213 | memset(rrpriv->info, 0, sizeof(struct rr_info)); | |
1214 | wmb(); | |
1215 | ||
1216 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1217 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, ®s->HostCtrl); | |
1218 | readl(®s->HostCtrl); | |
1219 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1220 | ||
0193fc5e | 1221 | if (request_irq(pdev->irq, rr_interrupt, IRQF_SHARED, dev->name, dev)) { |
1da177e4 | 1222 | printk(KERN_WARNING "%s: Requested IRQ %d is busy\n", |
0193fc5e | 1223 | dev->name, pdev->irq); |
1da177e4 LT |
1224 | ecode = -EAGAIN; |
1225 | goto error; | |
1226 | } | |
1227 | ||
1228 | if ((ecode = rr_init1(dev))) | |
1229 | goto error; | |
1230 | ||
1231 | /* Set the timer to switch to check for link beat and perhaps switch | |
1232 | to an alternate media type. */ | |
1233 | init_timer(&rrpriv->timer); | |
1234 | rrpriv->timer.expires = RUN_AT(5*HZ); /* 5 sec. watchdog */ | |
1235 | rrpriv->timer.data = (unsigned long)dev; | |
c061b18d | 1236 | rrpriv->timer.function = rr_timer; /* timer handler */ |
1da177e4 LT |
1237 | add_timer(&rrpriv->timer); |
1238 | ||
1239 | netif_start_queue(dev); | |
1240 | ||
1241 | return ecode; | |
1242 | ||
1243 | error: | |
1244 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1245 | writel(readl(®s->HostCtrl)|HALT_NIC|RR_CLEAR_INT, ®s->HostCtrl); | |
1246 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1247 | ||
1248 | if (rrpriv->info) { | |
1249 | pci_free_consistent(pdev, sizeof(struct rr_info), rrpriv->info, | |
1250 | rrpriv->info_dma); | |
1251 | rrpriv->info = NULL; | |
1252 | } | |
1253 | if (rrpriv->rx_ctrl) { | |
1254 | pci_free_consistent(pdev, sizeof(struct ring_ctrl), | |
1255 | rrpriv->rx_ctrl, rrpriv->rx_ctrl_dma); | |
1256 | rrpriv->rx_ctrl = NULL; | |
1257 | } | |
1258 | ||
1259 | netif_stop_queue(dev); | |
6aa20a22 | 1260 | |
1da177e4 LT |
1261 | return ecode; |
1262 | } | |
1263 | ||
1264 | ||
1265 | static void rr_dump(struct net_device *dev) | |
1266 | { | |
1267 | struct rr_private *rrpriv; | |
1268 | struct rr_regs __iomem *regs; | |
1269 | u32 index, cons; | |
1270 | short i; | |
1271 | int len; | |
1272 | ||
1273 | rrpriv = netdev_priv(dev); | |
1274 | regs = rrpriv->regs; | |
1275 | ||
1276 | printk("%s: dumping NIC TX rings\n", dev->name); | |
1277 | ||
1278 | printk("RxPrd %08x, TxPrd %02x, EvtPrd %08x, TxPi %02x, TxCtrlPi %02x\n", | |
1279 | readl(®s->RxPrd), readl(®s->TxPrd), | |
1280 | readl(®s->EvtPrd), readl(®s->TxPi), | |
1281 | rrpriv->info->tx_ctrl.pi); | |
1282 | ||
1283 | printk("Error code 0x%x\n", readl(®s->Fail1)); | |
1284 | ||
2585e7e5 | 1285 | index = (((readl(®s->EvtPrd) >> 8) & 0xff) - 1) % TX_RING_ENTRIES; |
1da177e4 LT |
1286 | cons = rrpriv->dirty_tx; |
1287 | printk("TX ring index %i, TX consumer %i\n", | |
1288 | index, cons); | |
1289 | ||
1290 | if (rrpriv->tx_skbuff[index]){ | |
1291 | len = min_t(int, 0x80, rrpriv->tx_skbuff[index]->len); | |
1292 | printk("skbuff for index %i is valid - dumping data (0x%x bytes - DMA len 0x%x)\n", index, len, rrpriv->tx_ring[index].size); | |
1293 | for (i = 0; i < len; i++){ | |
1294 | if (!(i & 7)) | |
1295 | printk("\n"); | |
1296 | printk("%02x ", (unsigned char) rrpriv->tx_skbuff[index]->data[i]); | |
1297 | } | |
1298 | printk("\n"); | |
1299 | } | |
1300 | ||
1301 | if (rrpriv->tx_skbuff[cons]){ | |
1302 | len = min_t(int, 0x80, rrpriv->tx_skbuff[cons]->len); | |
1303 | printk("skbuff for cons %i is valid - dumping data (0x%x bytes - skbuff len 0x%x)\n", cons, len, rrpriv->tx_skbuff[cons]->len); | |
1304 | printk("mode 0x%x, size 0x%x,\n phys %08Lx, skbuff-addr %08lx, truesize 0x%x\n", | |
1305 | rrpriv->tx_ring[cons].mode, | |
1306 | rrpriv->tx_ring[cons].size, | |
1307 | (unsigned long long) rrpriv->tx_ring[cons].addr.addrlo, | |
1308 | (unsigned long)rrpriv->tx_skbuff[cons]->data, | |
1309 | (unsigned int)rrpriv->tx_skbuff[cons]->truesize); | |
1310 | for (i = 0; i < len; i++){ | |
1311 | if (!(i & 7)) | |
1312 | printk("\n"); | |
1313 | printk("%02x ", (unsigned char)rrpriv->tx_ring[cons].size); | |
1314 | } | |
1315 | printk("\n"); | |
1316 | } | |
1317 | ||
1318 | printk("dumping TX ring info:\n"); | |
1319 | for (i = 0; i < TX_RING_ENTRIES; i++) | |
1320 | printk("mode 0x%x, size 0x%x, phys-addr %08Lx\n", | |
1321 | rrpriv->tx_ring[i].mode, | |
1322 | rrpriv->tx_ring[i].size, | |
1323 | (unsigned long long) rrpriv->tx_ring[i].addr.addrlo); | |
1324 | ||
1325 | } | |
1326 | ||
1327 | ||
1328 | static int rr_close(struct net_device *dev) | |
1329 | { | |
0193fc5e FR |
1330 | struct rr_private *rrpriv = netdev_priv(dev); |
1331 | struct rr_regs __iomem *regs = rrpriv->regs; | |
1332 | struct pci_dev *pdev = rrpriv->pci_dev; | |
1da177e4 LT |
1333 | unsigned long flags; |
1334 | u32 tmp; | |
1335 | short i; | |
1336 | ||
1337 | netif_stop_queue(dev); | |
1338 | ||
1da177e4 LT |
1339 | |
1340 | /* | |
1341 | * Lock to make sure we are not cleaning up while another CPU | |
1342 | * is handling interrupts. | |
1343 | */ | |
1344 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1345 | ||
1346 | tmp = readl(®s->HostCtrl); | |
1347 | if (tmp & NIC_HALTED){ | |
1348 | printk("%s: NIC already halted\n", dev->name); | |
1349 | rr_dump(dev); | |
1350 | }else{ | |
1351 | tmp |= HALT_NIC | RR_CLEAR_INT; | |
1352 | writel(tmp, ®s->HostCtrl); | |
1353 | readl(®s->HostCtrl); | |
1354 | } | |
1355 | ||
1356 | rrpriv->fw_running = 0; | |
1357 | ||
1358 | del_timer_sync(&rrpriv->timer); | |
1359 | ||
1360 | writel(0, ®s->TxPi); | |
1361 | writel(0, ®s->IpRxPi); | |
1362 | ||
1363 | writel(0, ®s->EvtCon); | |
1364 | writel(0, ®s->EvtPrd); | |
1365 | ||
1366 | for (i = 0; i < CMD_RING_ENTRIES; i++) | |
1367 | writel(0, ®s->CmdRing[i]); | |
1368 | ||
1369 | rrpriv->info->tx_ctrl.entries = 0; | |
1370 | rrpriv->info->cmd_ctrl.pi = 0; | |
1371 | rrpriv->info->evt_ctrl.pi = 0; | |
1372 | rrpriv->rx_ctrl[4].entries = 0; | |
1373 | ||
1374 | rr_raz_tx(rrpriv, dev); | |
1375 | rr_raz_rx(rrpriv, dev); | |
1376 | ||
0193fc5e | 1377 | pci_free_consistent(pdev, 256 * sizeof(struct ring_ctrl), |
1da177e4 LT |
1378 | rrpriv->rx_ctrl, rrpriv->rx_ctrl_dma); |
1379 | rrpriv->rx_ctrl = NULL; | |
1380 | ||
0193fc5e FR |
1381 | pci_free_consistent(pdev, sizeof(struct rr_info), rrpriv->info, |
1382 | rrpriv->info_dma); | |
1da177e4 LT |
1383 | rrpriv->info = NULL; |
1384 | ||
0193fc5e | 1385 | free_irq(pdev->irq, dev); |
1da177e4 LT |
1386 | spin_unlock_irqrestore(&rrpriv->lock, flags); |
1387 | ||
1388 | return 0; | |
1389 | } | |
1390 | ||
1391 | ||
61357325 SH |
1392 | static netdev_tx_t rr_start_xmit(struct sk_buff *skb, |
1393 | struct net_device *dev) | |
1da177e4 LT |
1394 | { |
1395 | struct rr_private *rrpriv = netdev_priv(dev); | |
1396 | struct rr_regs __iomem *regs = rrpriv->regs; | |
6f1cf165 | 1397 | struct hippi_cb *hcb = (struct hippi_cb *) skb->cb; |
1da177e4 LT |
1398 | struct ring_ctrl *txctrl; |
1399 | unsigned long flags; | |
1400 | u32 index, len = skb->len; | |
1401 | u32 *ifield; | |
1402 | struct sk_buff *new_skb; | |
1403 | ||
1404 | if (readl(®s->Mode) & FATAL_ERR) | |
1405 | printk("error codes Fail1 %02x, Fail2 %02x\n", | |
1406 | readl(®s->Fail1), readl(®s->Fail2)); | |
1407 | ||
1408 | /* | |
1409 | * We probably need to deal with tbusy here to prevent overruns. | |
1410 | */ | |
1411 | ||
1412 | if (skb_headroom(skb) < 8){ | |
1413 | printk("incoming skb too small - reallocating\n"); | |
1414 | if (!(new_skb = dev_alloc_skb(len + 8))) { | |
1415 | dev_kfree_skb(skb); | |
1416 | netif_wake_queue(dev); | |
3790c8cd | 1417 | return NETDEV_TX_OK; |
1da177e4 LT |
1418 | } |
1419 | skb_reserve(new_skb, 8); | |
1420 | skb_put(new_skb, len); | |
d626f62b | 1421 | skb_copy_from_linear_data(skb, new_skb->data, len); |
1da177e4 LT |
1422 | dev_kfree_skb(skb); |
1423 | skb = new_skb; | |
1424 | } | |
1425 | ||
1426 | ifield = (u32 *)skb_push(skb, 8); | |
1427 | ||
1428 | ifield[0] = 0; | |
6f1cf165 | 1429 | ifield[1] = hcb->ifield; |
1da177e4 LT |
1430 | |
1431 | /* | |
1432 | * We don't need the lock before we are actually going to start | |
1433 | * fiddling with the control blocks. | |
1434 | */ | |
1435 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1436 | ||
1437 | txctrl = &rrpriv->info->tx_ctrl; | |
1438 | ||
1439 | index = txctrl->pi; | |
1440 | ||
1441 | rrpriv->tx_skbuff[index] = skb; | |
1442 | set_rraddr(&rrpriv->tx_ring[index].addr, pci_map_single( | |
1443 | rrpriv->pci_dev, skb->data, len + 8, PCI_DMA_TODEVICE)); | |
1444 | rrpriv->tx_ring[index].size = len + 8; /* include IFIELD */ | |
1445 | rrpriv->tx_ring[index].mode = PACKET_START | PACKET_END; | |
1446 | txctrl->pi = (index + 1) % TX_RING_ENTRIES; | |
1447 | wmb(); | |
1448 | writel(txctrl->pi, ®s->TxPi); | |
1449 | ||
1450 | if (txctrl->pi == rrpriv->dirty_tx){ | |
1451 | rrpriv->tx_full = 1; | |
1452 | netif_stop_queue(dev); | |
1453 | } | |
1454 | ||
1455 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1456 | ||
6ed10654 | 1457 | return NETDEV_TX_OK; |
1da177e4 LT |
1458 | } |
1459 | ||
1460 | ||
1da177e4 LT |
1461 | /* |
1462 | * Read the firmware out of the EEPROM and put it into the SRAM | |
1463 | * (or from user space - later) | |
1464 | * | |
1465 | * This operation requires the NIC to be halted and is performed with | |
1466 | * interrupts disabled and with the spinlock hold. | |
1467 | */ | |
1468 | static int rr_load_firmware(struct net_device *dev) | |
1469 | { | |
1470 | struct rr_private *rrpriv; | |
1471 | struct rr_regs __iomem *regs; | |
cf962378 | 1472 | size_t eptr, segptr; |
1da177e4 LT |
1473 | int i, j; |
1474 | u32 localctrl, sptr, len, tmp; | |
1475 | u32 p2len, p2size, nr_seg, revision, io, sram_size; | |
1da177e4 LT |
1476 | |
1477 | rrpriv = netdev_priv(dev); | |
1478 | regs = rrpriv->regs; | |
1479 | ||
1480 | if (dev->flags & IFF_UP) | |
1481 | return -EBUSY; | |
1482 | ||
1483 | if (!(readl(®s->HostCtrl) & NIC_HALTED)){ | |
6aa20a22 | 1484 | printk("%s: Trying to load firmware to a running NIC.\n", |
1da177e4 LT |
1485 | dev->name); |
1486 | return -EBUSY; | |
1487 | } | |
1488 | ||
1489 | localctrl = readl(®s->LocalCtrl); | |
1490 | writel(0, ®s->LocalCtrl); | |
1491 | ||
1492 | writel(0, ®s->EvtPrd); | |
1493 | writel(0, ®s->RxPrd); | |
1494 | writel(0, ®s->TxPrd); | |
1495 | ||
1496 | /* | |
1497 | * First wipe the entire SRAM, otherwise we might run into all | |
1498 | * kinds of trouble ... sigh, this took almost all afternoon | |
1499 | * to track down ;-( | |
1500 | */ | |
1501 | io = readl(®s->ExtIo); | |
1502 | writel(0, ®s->ExtIo); | |
cf962378 | 1503 | sram_size = rr_read_eeprom_word(rrpriv, 8); |
1da177e4 LT |
1504 | |
1505 | for (i = 200; i < sram_size / 4; i++){ | |
1506 | writel(i * 4, ®s->WinBase); | |
1507 | mb(); | |
1508 | writel(0, ®s->WinData); | |
1509 | mb(); | |
1510 | } | |
1511 | writel(io, ®s->ExtIo); | |
1512 | mb(); | |
1513 | ||
cf962378 AV |
1514 | eptr = rr_read_eeprom_word(rrpriv, |
1515 | offsetof(struct eeprom, rncd_info.AddrRunCodeSegs)); | |
1da177e4 LT |
1516 | eptr = ((eptr & 0x1fffff) >> 3); |
1517 | ||
cf962378 | 1518 | p2len = rr_read_eeprom_word(rrpriv, 0x83*4); |
1da177e4 | 1519 | p2len = (p2len << 2); |
cf962378 | 1520 | p2size = rr_read_eeprom_word(rrpriv, 0x84*4); |
1da177e4 LT |
1521 | p2size = ((p2size & 0x1fffff) >> 3); |
1522 | ||
1523 | if ((eptr < p2size) || (eptr > (p2size + p2len))){ | |
1524 | printk("%s: eptr is invalid\n", dev->name); | |
1525 | goto out; | |
1526 | } | |
1527 | ||
cf962378 AV |
1528 | revision = rr_read_eeprom_word(rrpriv, |
1529 | offsetof(struct eeprom, manf.HeaderFmt)); | |
1da177e4 LT |
1530 | |
1531 | if (revision != 1){ | |
1532 | printk("%s: invalid firmware format (%i)\n", | |
1533 | dev->name, revision); | |
1534 | goto out; | |
1535 | } | |
1536 | ||
cf962378 | 1537 | nr_seg = rr_read_eeprom_word(rrpriv, eptr); |
1da177e4 LT |
1538 | eptr +=4; |
1539 | #if (DEBUG > 1) | |
1540 | printk("%s: nr_seg %i\n", dev->name, nr_seg); | |
1541 | #endif | |
1542 | ||
1543 | for (i = 0; i < nr_seg; i++){ | |
cf962378 | 1544 | sptr = rr_read_eeprom_word(rrpriv, eptr); |
1da177e4 | 1545 | eptr += 4; |
cf962378 | 1546 | len = rr_read_eeprom_word(rrpriv, eptr); |
1da177e4 | 1547 | eptr += 4; |
cf962378 | 1548 | segptr = rr_read_eeprom_word(rrpriv, eptr); |
1da177e4 LT |
1549 | segptr = ((segptr & 0x1fffff) >> 3); |
1550 | eptr += 4; | |
1551 | #if (DEBUG > 1) | |
1552 | printk("%s: segment %i, sram address %06x, length %04x, segptr %06x\n", | |
1553 | dev->name, i, sptr, len, segptr); | |
1554 | #endif | |
1555 | for (j = 0; j < len; j++){ | |
cf962378 | 1556 | tmp = rr_read_eeprom_word(rrpriv, segptr); |
1da177e4 LT |
1557 | writel(sptr, ®s->WinBase); |
1558 | mb(); | |
1559 | writel(tmp, ®s->WinData); | |
1560 | mb(); | |
1561 | segptr += 4; | |
1562 | sptr += 4; | |
1563 | } | |
1564 | } | |
1565 | ||
1566 | out: | |
1567 | writel(localctrl, ®s->LocalCtrl); | |
1568 | mb(); | |
1569 | return 0; | |
1570 | } | |
1571 | ||
1572 | ||
1573 | static int rr_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) | |
1574 | { | |
1575 | struct rr_private *rrpriv; | |
1576 | unsigned char *image, *oldimage; | |
1577 | unsigned long flags; | |
1578 | unsigned int i; | |
1579 | int error = -EOPNOTSUPP; | |
1580 | ||
1581 | rrpriv = netdev_priv(dev); | |
1582 | ||
1583 | switch(cmd){ | |
1584 | case SIOCRRGFW: | |
1585 | if (!capable(CAP_SYS_RAWIO)){ | |
1586 | return -EPERM; | |
1587 | } | |
1588 | ||
1589 | image = kmalloc(EEPROM_WORDS * sizeof(u32), GFP_KERNEL); | |
e404decb | 1590 | if (!image) |
1da177e4 | 1591 | return -ENOMEM; |
1da177e4 LT |
1592 | |
1593 | if (rrpriv->fw_running){ | |
1594 | printk("%s: Firmware already running\n", dev->name); | |
1595 | error = -EPERM; | |
1596 | goto gf_out; | |
1597 | } | |
1598 | ||
1599 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1600 | i = rr_read_eeprom(rrpriv, 0, image, EEPROM_BYTES); | |
1601 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1602 | if (i != EEPROM_BYTES){ | |
1603 | printk(KERN_ERR "%s: Error reading EEPROM\n", | |
1604 | dev->name); | |
1605 | error = -EFAULT; | |
1606 | goto gf_out; | |
1607 | } | |
1608 | error = copy_to_user(rq->ifr_data, image, EEPROM_BYTES); | |
1609 | if (error) | |
1610 | error = -EFAULT; | |
1611 | gf_out: | |
1612 | kfree(image); | |
1613 | return error; | |
6aa20a22 | 1614 | |
1da177e4 LT |
1615 | case SIOCRRPFW: |
1616 | if (!capable(CAP_SYS_RAWIO)){ | |
1617 | return -EPERM; | |
1618 | } | |
1619 | ||
1620 | image = kmalloc(EEPROM_WORDS * sizeof(u32), GFP_KERNEL); | |
1621 | oldimage = kmalloc(EEPROM_WORDS * sizeof(u32), GFP_KERNEL); | |
1622 | if (!image || !oldimage) { | |
1da177e4 LT |
1623 | error = -ENOMEM; |
1624 | goto wf_out; | |
1625 | } | |
1626 | ||
1627 | error = copy_from_user(image, rq->ifr_data, EEPROM_BYTES); | |
1628 | if (error) { | |
1629 | error = -EFAULT; | |
1630 | goto wf_out; | |
1631 | } | |
1632 | ||
1633 | if (rrpriv->fw_running){ | |
1634 | printk("%s: Firmware already running\n", dev->name); | |
1635 | error = -EPERM; | |
1636 | goto wf_out; | |
1637 | } | |
1638 | ||
1639 | printk("%s: Updating EEPROM firmware\n", dev->name); | |
1640 | ||
1641 | spin_lock_irqsave(&rrpriv->lock, flags); | |
1642 | error = write_eeprom(rrpriv, 0, image, EEPROM_BYTES); | |
1643 | if (error) | |
1644 | printk(KERN_ERR "%s: Error writing EEPROM\n", | |
1645 | dev->name); | |
1646 | ||
1647 | i = rr_read_eeprom(rrpriv, 0, oldimage, EEPROM_BYTES); | |
1648 | spin_unlock_irqrestore(&rrpriv->lock, flags); | |
1649 | ||
1650 | if (i != EEPROM_BYTES) | |
1651 | printk(KERN_ERR "%s: Error reading back EEPROM " | |
1652 | "image\n", dev->name); | |
1653 | ||
1654 | error = memcmp(image, oldimage, EEPROM_BYTES); | |
1655 | if (error){ | |
1656 | printk(KERN_ERR "%s: Error verifying EEPROM image\n", | |
1657 | dev->name); | |
1658 | error = -EFAULT; | |
1659 | } | |
1660 | wf_out: | |
b4558ea9 JJ |
1661 | kfree(oldimage); |
1662 | kfree(image); | |
1da177e4 | 1663 | return error; |
6aa20a22 | 1664 | |
1da177e4 LT |
1665 | case SIOCRRID: |
1666 | return put_user(0x52523032, (int __user *)rq->ifr_data); | |
1667 | default: | |
1668 | return error; | |
1669 | } | |
1670 | } | |
1671 | ||
a3aa1884 | 1672 | static DEFINE_PCI_DEVICE_TABLE(rr_pci_tbl) = { |
1da177e4 LT |
1673 | { PCI_VENDOR_ID_ESSENTIAL, PCI_DEVICE_ID_ESSENTIAL_ROADRUNNER, |
1674 | PCI_ANY_ID, PCI_ANY_ID, }, | |
1675 | { 0,} | |
1676 | }; | |
1677 | MODULE_DEVICE_TABLE(pci, rr_pci_tbl); | |
1678 | ||
1679 | static struct pci_driver rr_driver = { | |
1680 | .name = "rrunner", | |
1681 | .id_table = rr_pci_tbl, | |
1682 | .probe = rr_init_one, | |
6e945491 | 1683 | .remove = rr_remove_one, |
1da177e4 LT |
1684 | }; |
1685 | ||
1686 | static int __init rr_init_module(void) | |
1687 | { | |
29917620 | 1688 | return pci_register_driver(&rr_driver); |
1da177e4 LT |
1689 | } |
1690 | ||
1691 | static void __exit rr_cleanup_module(void) | |
1692 | { | |
1693 | pci_unregister_driver(&rr_driver); | |
1694 | } | |
1695 | ||
1696 | module_init(rr_init_module); | |
1697 | module_exit(rr_cleanup_module); |