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1da177e4 LT |
1 | /* |
2 | * tms380tr.c: A network driver library for Texas Instruments TMS380-based | |
3 | * Token Ring Adapters. | |
4 | * | |
5 | * Originally sktr.c: Written 1997 by Christoph Goos | |
6 | * | |
7 | * A fine result of the Linux Systems Network Architecture Project. | |
8 | * http://www.linux-sna.org | |
9 | * | |
10 | * This software may be used and distributed according to the terms | |
11 | * of the GNU General Public License, incorporated herein by reference. | |
12 | * | |
13 | * The following modules are currently available for card support: | |
14 | * - tmspci (Generic PCI card support) | |
15 | * - abyss (Madge PCI support) | |
16 | * - tmsisa (SysKonnect TR4/16 ISA) | |
17 | * | |
18 | * Sources: | |
19 | * - The hardware related parts of this driver are take from | |
20 | * the SysKonnect Token Ring driver for Windows NT. | |
21 | * - I used the IBM Token Ring driver 'ibmtr.c' as a base for this | |
22 | * driver, as well as the 'skeleton.c' driver by Donald Becker. | |
23 | * - Also various other drivers in the linux source tree were taken | |
24 | * as samples for some tasks. | |
25 | * - TI TMS380 Second-Generation Token Ring User's Guide | |
26 | * - TI datasheets for respective chips | |
27 | * - David Hein at Texas Instruments | |
28 | * - Various Madge employees | |
29 | * | |
30 | * Maintainer(s): | |
31 | * JS Jay Schulist jschlst@samba.org | |
32 | * CG Christoph Goos cgoos@syskonnect.de | |
33 | * AF Adam Fritzler mid@auk.cx | |
34 | * MLP Mike Phillips phillim@amtrak.com | |
35 | * JF Jochen Friedrich jochen@scram.de | |
36 | * | |
37 | * Modification History: | |
38 | * 29-Aug-97 CG Created | |
39 | * 04-Apr-98 CG Fixed problems caused by tok_timer_check | |
40 | * 10-Apr-98 CG Fixed lockups at cable disconnection | |
41 | * 27-May-98 JS Formated to Linux Kernel Format | |
42 | * 31-May-98 JS Hacked in PCI support | |
43 | * 16-Jun-98 JS Modulized for multiple cards with one driver | |
44 | * Sep-99 AF Renamed to tms380tr (supports more than SK's) | |
45 | * 23-Sep-99 AF Added Compaq and Thomas-Conrad PCI support | |
46 | * Fixed a bug causing double copies on PCI | |
47 | * Fixed for new multicast stuff (2.2/2.3) | |
48 | * 25-Sep-99 AF Uped TPL_NUM from 3 to 9 | |
49 | * Removed extraneous 'No free TPL' | |
50 | * 22-Dec-99 AF Added Madge PCI Mk2 support and generalized | |
51 | * parts of the initilization procedure. | |
52 | * 30-Dec-99 AF Turned tms380tr into a library ala 8390. | |
53 | * Madge support is provided in the abyss module | |
54 | * Generic PCI support is in the tmspci module. | |
55 | * 30-Nov-00 JF Updated PCI code to support IO MMU via | |
56 | * pci_map_static(). Alpha uses this MMU for ISA | |
57 | * as well. | |
58 | * 14-Jan-01 JF Fix DMA on ifdown/ifup sequences. Some | |
59 | * cleanup. | |
60 | * 13-Jan-02 JF Add spinlock to fix race condition. | |
61 | * 09-Nov-02 JF Fixed printks to not SPAM the console during | |
62 | * normal operation. | |
63 | * 30-Dec-02 JF Removed incorrect __init from | |
64 | * tms380tr_init_card. | |
504ff16c | 65 | * 22-Jul-05 JF Converted to dma-mapping. |
1da177e4 LT |
66 | * |
67 | * To do: | |
68 | * 1. Multi/Broadcast packet handling (this may have fixed itself) | |
69 | * 2. Write a sktrisa module that includes the old ISA support (done) | |
70 | * 3. Allow modules to load their own microcode | |
71 | * 4. Speed up the BUD process -- freezing the kernel for 3+sec is | |
72 | * quite unacceptable. | |
73 | * 5. Still a few remaining stalls when the cable is unplugged. | |
74 | */ | |
75 | ||
76 | #ifdef MODULE | |
77 | static const char version[] = "tms380tr.c: v1.10 30/12/2002 by Christoph Goos, Adam Fritzler\n"; | |
78 | #endif | |
79 | ||
80 | #include <linux/module.h> | |
81 | #include <linux/kernel.h> | |
82 | #include <linux/types.h> | |
83 | #include <linux/fcntl.h> | |
84 | #include <linux/interrupt.h> | |
85 | #include <linux/ptrace.h> | |
86 | #include <linux/ioport.h> | |
87 | #include <linux/in.h> | |
88 | #include <linux/slab.h> | |
89 | #include <linux/string.h> | |
90 | #include <linux/time.h> | |
91 | #include <linux/errno.h> | |
92 | #include <linux/init.h> | |
504ff16c | 93 | #include <linux/dma-mapping.h> |
1da177e4 LT |
94 | #include <linux/delay.h> |
95 | #include <linux/netdevice.h> | |
96 | #include <linux/etherdevice.h> | |
97 | #include <linux/skbuff.h> | |
98 | #include <linux/trdevice.h> | |
99 | #include <linux/firmware.h> | |
100 | #include <linux/bitops.h> | |
101 | ||
102 | #include <asm/system.h> | |
103 | #include <asm/io.h> | |
104 | #include <asm/dma.h> | |
105 | #include <asm/irq.h> | |
106 | #include <asm/uaccess.h> | |
107 | ||
108 | #include "tms380tr.h" /* Our Stuff */ | |
109 | ||
110 | /* Use 0 for production, 1 for verification, 2 for debug, and | |
111 | * 3 for very verbose debug. | |
112 | */ | |
113 | #ifndef TMS380TR_DEBUG | |
114 | #define TMS380TR_DEBUG 0 | |
115 | #endif | |
116 | static unsigned int tms380tr_debug = TMS380TR_DEBUG; | |
117 | ||
1da177e4 LT |
118 | /* Index to functions, as function prototypes. |
119 | * Alphabetical by function name. | |
120 | */ | |
121 | ||
122 | /* "A" */ | |
123 | /* "B" */ | |
124 | static int tms380tr_bringup_diags(struct net_device *dev); | |
125 | /* "C" */ | |
126 | static void tms380tr_cancel_tx_queue(struct net_local* tp); | |
127 | static int tms380tr_chipset_init(struct net_device *dev); | |
128 | static void tms380tr_chk_irq(struct net_device *dev); | |
129 | static void tms380tr_chk_outstanding_cmds(struct net_device *dev); | |
130 | static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr); | |
131 | static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType); | |
132 | int tms380tr_close(struct net_device *dev); | |
133 | static void tms380tr_cmd_status_irq(struct net_device *dev); | |
134 | /* "D" */ | |
135 | static void tms380tr_disable_interrupts(struct net_device *dev); | |
136 | #if TMS380TR_DEBUG > 0 | |
137 | static void tms380tr_dump(unsigned char *Data, int length); | |
138 | #endif | |
139 | /* "E" */ | |
140 | static void tms380tr_enable_interrupts(struct net_device *dev); | |
141 | static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command); | |
142 | static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue); | |
143 | /* "F" */ | |
144 | /* "G" */ | |
145 | static struct net_device_stats *tms380tr_get_stats(struct net_device *dev); | |
146 | /* "H" */ | |
147 | static int tms380tr_hardware_send_packet(struct sk_buff *skb, | |
148 | struct net_device *dev); | |
149 | /* "I" */ | |
150 | static int tms380tr_init_adapter(struct net_device *dev); | |
151 | static void tms380tr_init_ipb(struct net_local *tp); | |
152 | static void tms380tr_init_net_local(struct net_device *dev); | |
153 | static void tms380tr_init_opb(struct net_device *dev); | |
154 | /* "M" */ | |
155 | /* "O" */ | |
156 | int tms380tr_open(struct net_device *dev); | |
157 | static void tms380tr_open_adapter(struct net_device *dev); | |
158 | /* "P" */ | |
159 | /* "R" */ | |
160 | static void tms380tr_rcv_status_irq(struct net_device *dev); | |
161 | static int tms380tr_read_ptr(struct net_device *dev); | |
162 | static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data, | |
163 | unsigned short Address, int Length); | |
164 | static int tms380tr_reset_adapter(struct net_device *dev); | |
165 | static void tms380tr_reset_interrupt(struct net_device *dev); | |
166 | static void tms380tr_ring_status_irq(struct net_device *dev); | |
167 | /* "S" */ | |
168 | static int tms380tr_send_packet(struct sk_buff *skb, struct net_device *dev); | |
169 | static void tms380tr_set_multicast_list(struct net_device *dev); | |
170 | static int tms380tr_set_mac_address(struct net_device *dev, void *addr); | |
171 | /* "T" */ | |
172 | static void tms380tr_timer_chk(unsigned long data); | |
173 | static void tms380tr_timer_end_wait(unsigned long data); | |
174 | static void tms380tr_tx_status_irq(struct net_device *dev); | |
175 | /* "U" */ | |
176 | static void tms380tr_update_rcv_stats(struct net_local *tp, | |
177 | unsigned char DataPtr[], unsigned int Length); | |
178 | /* "W" */ | |
179 | void tms380tr_wait(unsigned long time); | |
180 | static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status); | |
181 | static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status); | |
182 | ||
183 | #define SIFREADB(reg) (((struct net_local *)dev->priv)->sifreadb(dev, reg)) | |
184 | #define SIFWRITEB(val, reg) (((struct net_local *)dev->priv)->sifwriteb(dev, val, reg)) | |
185 | #define SIFREADW(reg) (((struct net_local *)dev->priv)->sifreadw(dev, reg)) | |
186 | #define SIFWRITEW(val, reg) (((struct net_local *)dev->priv)->sifwritew(dev, val, reg)) | |
187 | ||
188 | ||
189 | ||
190 | #if 0 /* TMS380TR_DEBUG > 0 */ | |
191 | static int madgemc_sifprobe(struct net_device *dev) | |
192 | { | |
193 | unsigned char old, chk1, chk2; | |
194 | ||
195 | old = SIFREADB(SIFADR); /* Get the old SIFADR value */ | |
196 | ||
197 | chk1 = 0; /* Begin with check value 0 */ | |
198 | do { | |
199 | madgemc_setregpage(dev, 0); | |
200 | /* Write new SIFADR value */ | |
201 | SIFWRITEB(chk1, SIFADR); | |
202 | chk2 = SIFREADB(SIFADR); | |
203 | if (chk2 != chk1) | |
204 | return -1; | |
205 | ||
206 | madgemc_setregpage(dev, 1); | |
207 | /* Read, invert and write */ | |
208 | chk2 = SIFREADB(SIFADD); | |
209 | if (chk2 != chk1) | |
210 | return -1; | |
211 | ||
212 | madgemc_setregpage(dev, 0); | |
213 | chk2 ^= 0x0FE; | |
214 | SIFWRITEB(chk2, SIFADR); | |
215 | ||
216 | /* Read, invert and compare */ | |
217 | madgemc_setregpage(dev, 1); | |
218 | chk2 = SIFREADB(SIFADD); | |
219 | madgemc_setregpage(dev, 0); | |
220 | chk2 ^= 0x0FE; | |
221 | ||
222 | if(chk1 != chk2) | |
223 | return (-1); /* No adapter */ | |
224 | chk1 -= 2; | |
225 | } while(chk1 != 0); /* Repeat 128 times (all byte values) */ | |
226 | ||
227 | madgemc_setregpage(dev, 0); /* sanity */ | |
228 | /* Restore the SIFADR value */ | |
229 | SIFWRITEB(old, SIFADR); | |
230 | ||
231 | return (0); | |
232 | } | |
233 | #endif | |
234 | ||
235 | /* | |
236 | * Open/initialize the board. This is called sometime after | |
237 | * booting when the 'ifconfig' program is run. | |
238 | * | |
239 | * This routine should set everything up anew at each open, even | |
240 | * registers that "should" only need to be set once at boot, so that | |
241 | * there is non-reboot way to recover if something goes wrong. | |
242 | */ | |
243 | int tms380tr_open(struct net_device *dev) | |
244 | { | |
245 | struct net_local *tp = netdev_priv(dev); | |
246 | int err; | |
247 | ||
248 | /* init the spinlock */ | |
249 | spin_lock_init(&tp->lock); | |
250 | init_timer(&tp->timer); | |
251 | ||
252 | /* Reset the hardware here. Don't forget to set the station address. */ | |
253 | ||
254 | #ifdef CONFIG_ISA | |
255 | if(dev->dma > 0) | |
256 | { | |
257 | unsigned long flags=claim_dma_lock(); | |
258 | disable_dma(dev->dma); | |
259 | set_dma_mode(dev->dma, DMA_MODE_CASCADE); | |
260 | enable_dma(dev->dma); | |
261 | release_dma_lock(flags); | |
262 | } | |
263 | #endif | |
264 | ||
265 | err = tms380tr_chipset_init(dev); | |
266 | if(err) | |
267 | { | |
268 | printk(KERN_INFO "%s: Chipset initialization error\n", | |
269 | dev->name); | |
270 | return (-1); | |
271 | } | |
272 | ||
273 | tp->timer.expires = jiffies + 30*HZ; | |
274 | tp->timer.function = tms380tr_timer_end_wait; | |
275 | tp->timer.data = (unsigned long)dev; | |
276 | add_timer(&tp->timer); | |
277 | ||
278 | printk(KERN_DEBUG "%s: Adapter RAM size: %dK\n", | |
279 | dev->name, tms380tr_read_ptr(dev)); | |
280 | ||
281 | tms380tr_enable_interrupts(dev); | |
282 | tms380tr_open_adapter(dev); | |
283 | ||
284 | netif_start_queue(dev); | |
285 | ||
286 | /* Wait for interrupt from hardware. If interrupt does not come, | |
287 | * there will be a timeout from the timer. | |
288 | */ | |
289 | tp->Sleeping = 1; | |
290 | interruptible_sleep_on(&tp->wait_for_tok_int); | |
291 | del_timer(&tp->timer); | |
292 | ||
293 | /* If AdapterVirtOpenFlag is 1, the adapter is now open for use */ | |
294 | if(tp->AdapterVirtOpenFlag == 0) | |
295 | { | |
296 | tms380tr_disable_interrupts(dev); | |
297 | return (-1); | |
298 | } | |
299 | ||
300 | tp->StartTime = jiffies; | |
301 | ||
302 | /* Start function control timer */ | |
303 | tp->timer.expires = jiffies + 2*HZ; | |
304 | tp->timer.function = tms380tr_timer_chk; | |
305 | tp->timer.data = (unsigned long)dev; | |
306 | add_timer(&tp->timer); | |
307 | ||
308 | return (0); | |
309 | } | |
310 | ||
311 | /* | |
312 | * Timeout function while waiting for event | |
313 | */ | |
314 | static void tms380tr_timer_end_wait(unsigned long data) | |
315 | { | |
316 | struct net_device *dev = (struct net_device*)data; | |
317 | struct net_local *tp = netdev_priv(dev); | |
318 | ||
319 | if(tp->Sleeping) | |
320 | { | |
321 | tp->Sleeping = 0; | |
322 | wake_up_interruptible(&tp->wait_for_tok_int); | |
323 | } | |
324 | ||
325 | return; | |
326 | } | |
327 | ||
328 | /* | |
329 | * Initialize the chipset | |
330 | */ | |
331 | static int tms380tr_chipset_init(struct net_device *dev) | |
332 | { | |
333 | struct net_local *tp = netdev_priv(dev); | |
334 | int err; | |
335 | ||
336 | tms380tr_init_ipb(tp); | |
337 | tms380tr_init_opb(dev); | |
338 | tms380tr_init_net_local(dev); | |
339 | ||
340 | if(tms380tr_debug > 3) | |
341 | printk(KERN_DEBUG "%s: Resetting adapter...\n", dev->name); | |
342 | err = tms380tr_reset_adapter(dev); | |
343 | if(err < 0) | |
344 | return (-1); | |
345 | ||
346 | if(tms380tr_debug > 3) | |
347 | printk(KERN_DEBUG "%s: Bringup diags...\n", dev->name); | |
348 | err = tms380tr_bringup_diags(dev); | |
349 | if(err < 0) | |
350 | return (-1); | |
351 | ||
352 | if(tms380tr_debug > 3) | |
353 | printk(KERN_DEBUG "%s: Init adapter...\n", dev->name); | |
354 | err = tms380tr_init_adapter(dev); | |
355 | if(err < 0) | |
356 | return (-1); | |
357 | ||
358 | if(tms380tr_debug > 3) | |
359 | printk(KERN_DEBUG "%s: Done!\n", dev->name); | |
360 | return (0); | |
361 | } | |
362 | ||
363 | /* | |
364 | * Initializes the net_local structure. | |
365 | */ | |
366 | static void tms380tr_init_net_local(struct net_device *dev) | |
367 | { | |
368 | struct net_local *tp = netdev_priv(dev); | |
369 | int i; | |
370 | dma_addr_t dmabuf; | |
371 | ||
372 | tp->scb.CMD = 0; | |
373 | tp->scb.Parm[0] = 0; | |
374 | tp->scb.Parm[1] = 0; | |
375 | ||
376 | tp->ssb.STS = 0; | |
377 | tp->ssb.Parm[0] = 0; | |
378 | tp->ssb.Parm[1] = 0; | |
379 | tp->ssb.Parm[2] = 0; | |
380 | ||
381 | tp->CMDqueue = 0; | |
382 | ||
383 | tp->AdapterOpenFlag = 0; | |
384 | tp->AdapterVirtOpenFlag = 0; | |
385 | tp->ScbInUse = 0; | |
386 | tp->OpenCommandIssued = 0; | |
387 | tp->ReOpenInProgress = 0; | |
388 | tp->HaltInProgress = 0; | |
389 | tp->TransmitHaltScheduled = 0; | |
390 | tp->LobeWireFaultLogged = 0; | |
391 | tp->LastOpenStatus = 0; | |
392 | tp->MaxPacketSize = DEFAULT_PACKET_SIZE; | |
393 | ||
394 | /* Create circular chain of transmit lists */ | |
395 | for (i = 0; i < TPL_NUM; i++) | |
396 | { | |
397 | tp->Tpl[i].NextTPLAddr = htonl(((char *)(&tp->Tpl[(i+1) % TPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */ | |
398 | tp->Tpl[i].Status = 0; | |
399 | tp->Tpl[i].FrameSize = 0; | |
400 | tp->Tpl[i].FragList[0].DataCount = 0; | |
401 | tp->Tpl[i].FragList[0].DataAddr = 0; | |
402 | tp->Tpl[i].NextTPLPtr = &tp->Tpl[(i+1) % TPL_NUM]; | |
403 | tp->Tpl[i].MData = NULL; | |
404 | tp->Tpl[i].TPLIndex = i; | |
405 | tp->Tpl[i].DMABuff = 0; | |
406 | tp->Tpl[i].BusyFlag = 0; | |
407 | } | |
408 | ||
409 | tp->TplFree = tp->TplBusy = &tp->Tpl[0]; | |
410 | ||
411 | /* Create circular chain of receive lists */ | |
412 | for (i = 0; i < RPL_NUM; i++) | |
413 | { | |
414 | tp->Rpl[i].NextRPLAddr = htonl(((char *)(&tp->Rpl[(i+1) % RPL_NUM]) - (char *)tp) + tp->dmabuffer); /* DMA buffer may be MMU driven */ | |
415 | tp->Rpl[i].Status = (RX_VALID | RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ); | |
416 | tp->Rpl[i].FrameSize = 0; | |
417 | tp->Rpl[i].FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize); | |
418 | ||
419 | /* Alloc skb and point adapter to data area */ | |
420 | tp->Rpl[i].Skb = dev_alloc_skb(tp->MaxPacketSize); | |
421 | tp->Rpl[i].DMABuff = 0; | |
422 | ||
423 | /* skb == NULL ? then use local buffer */ | |
424 | if(tp->Rpl[i].Skb == NULL) | |
425 | { | |
426 | tp->Rpl[i].SkbStat = SKB_UNAVAILABLE; | |
427 | tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer); | |
428 | tp->Rpl[i].MData = tp->LocalRxBuffers[i]; | |
429 | } | |
430 | else /* SKB != NULL */ | |
431 | { | |
432 | tp->Rpl[i].Skb->dev = dev; | |
433 | skb_put(tp->Rpl[i].Skb, tp->MaxPacketSize); | |
434 | ||
435 | /* data unreachable for DMA ? then use local buffer */ | |
504ff16c | 436 | dmabuf = dma_map_single(tp->pdev, tp->Rpl[i].Skb->data, tp->MaxPacketSize, DMA_FROM_DEVICE); |
1da177e4 LT |
437 | if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit)) |
438 | { | |
439 | tp->Rpl[i].SkbStat = SKB_DATA_COPY; | |
440 | tp->Rpl[i].FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[i] - (char *)tp) + tp->dmabuffer); | |
441 | tp->Rpl[i].MData = tp->LocalRxBuffers[i]; | |
442 | } | |
443 | else /* DMA directly in skb->data */ | |
444 | { | |
445 | tp->Rpl[i].SkbStat = SKB_DMA_DIRECT; | |
446 | tp->Rpl[i].FragList[0].DataAddr = htonl(dmabuf); | |
447 | tp->Rpl[i].MData = tp->Rpl[i].Skb->data; | |
448 | tp->Rpl[i].DMABuff = dmabuf; | |
449 | } | |
450 | } | |
451 | ||
452 | tp->Rpl[i].NextRPLPtr = &tp->Rpl[(i+1) % RPL_NUM]; | |
453 | tp->Rpl[i].RPLIndex = i; | |
454 | } | |
455 | ||
456 | tp->RplHead = &tp->Rpl[0]; | |
457 | tp->RplTail = &tp->Rpl[RPL_NUM-1]; | |
458 | tp->RplTail->Status = (RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ); | |
459 | ||
460 | return; | |
461 | } | |
462 | ||
463 | /* | |
464 | * Initializes the initialisation parameter block. | |
465 | */ | |
466 | static void tms380tr_init_ipb(struct net_local *tp) | |
467 | { | |
468 | tp->ipb.Init_Options = BURST_MODE; | |
469 | tp->ipb.CMD_Status_IV = 0; | |
470 | tp->ipb.TX_IV = 0; | |
471 | tp->ipb.RX_IV = 0; | |
472 | tp->ipb.Ring_Status_IV = 0; | |
473 | tp->ipb.SCB_Clear_IV = 0; | |
474 | tp->ipb.Adapter_CHK_IV = 0; | |
475 | tp->ipb.RX_Burst_Size = BURST_SIZE; | |
476 | tp->ipb.TX_Burst_Size = BURST_SIZE; | |
477 | tp->ipb.DMA_Abort_Thrhld = DMA_RETRIES; | |
478 | tp->ipb.SCB_Addr = 0; | |
479 | tp->ipb.SSB_Addr = 0; | |
480 | ||
481 | return; | |
482 | } | |
483 | ||
484 | /* | |
485 | * Initializes the open parameter block. | |
486 | */ | |
487 | static void tms380tr_init_opb(struct net_device *dev) | |
488 | { | |
489 | struct net_local *tp; | |
490 | unsigned long Addr; | |
491 | unsigned short RplSize = RPL_SIZE; | |
492 | unsigned short TplSize = TPL_SIZE; | |
493 | unsigned short BufferSize = BUFFER_SIZE; | |
494 | int i; | |
495 | ||
496 | tp = netdev_priv(dev); | |
497 | ||
498 | tp->ocpl.OPENOptions = 0; | |
499 | tp->ocpl.OPENOptions |= ENABLE_FULL_DUPLEX_SELECTION; | |
500 | tp->ocpl.FullDuplex = 0; | |
501 | tp->ocpl.FullDuplex |= OPEN_FULL_DUPLEX_OFF; | |
502 | ||
503 | /* | |
504 | * Set node address | |
505 | * | |
506 | * We go ahead and put it in the OPB even though on | |
507 | * most of the generic adapters this isn't required. | |
508 | * Its simpler this way. -- ASF | |
509 | */ | |
510 | for (i=0;i<6;i++) | |
511 | tp->ocpl.NodeAddr[i] = ((unsigned char *)dev->dev_addr)[i]; | |
512 | ||
513 | tp->ocpl.GroupAddr = 0; | |
514 | tp->ocpl.FunctAddr = 0; | |
515 | tp->ocpl.RxListSize = cpu_to_be16((unsigned short)RplSize); | |
516 | tp->ocpl.TxListSize = cpu_to_be16((unsigned short)TplSize); | |
517 | tp->ocpl.BufSize = cpu_to_be16((unsigned short)BufferSize); | |
518 | tp->ocpl.Reserved = 0; | |
519 | tp->ocpl.TXBufMin = TX_BUF_MIN; | |
520 | tp->ocpl.TXBufMax = TX_BUF_MAX; | |
521 | ||
522 | Addr = htonl(((char *)tp->ProductID - (char *)tp) + tp->dmabuffer); | |
523 | ||
524 | tp->ocpl.ProdIDAddr[0] = LOWORD(Addr); | |
525 | tp->ocpl.ProdIDAddr[1] = HIWORD(Addr); | |
526 | ||
527 | return; | |
528 | } | |
529 | ||
530 | /* | |
531 | * Send OPEN command to adapter | |
532 | */ | |
533 | static void tms380tr_open_adapter(struct net_device *dev) | |
534 | { | |
535 | struct net_local *tp = netdev_priv(dev); | |
536 | ||
537 | if(tp->OpenCommandIssued) | |
538 | return; | |
539 | ||
540 | tp->OpenCommandIssued = 1; | |
541 | tms380tr_exec_cmd(dev, OC_OPEN); | |
542 | ||
543 | return; | |
544 | } | |
545 | ||
546 | /* | |
547 | * Clear the adapter's interrupt flag. Clear system interrupt enable | |
548 | * (SINTEN): disable adapter to system interrupts. | |
549 | */ | |
550 | static void tms380tr_disable_interrupts(struct net_device *dev) | |
551 | { | |
552 | SIFWRITEB(0, SIFACL); | |
553 | ||
554 | return; | |
555 | } | |
556 | ||
557 | /* | |
558 | * Set the adapter's interrupt flag. Set system interrupt enable | |
559 | * (SINTEN): enable adapter to system interrupts. | |
560 | */ | |
561 | static void tms380tr_enable_interrupts(struct net_device *dev) | |
562 | { | |
563 | SIFWRITEB(ACL_SINTEN, SIFACL); | |
564 | ||
565 | return; | |
566 | } | |
567 | ||
568 | /* | |
569 | * Put command in command queue, try to execute it. | |
570 | */ | |
571 | static void tms380tr_exec_cmd(struct net_device *dev, unsigned short Command) | |
572 | { | |
573 | struct net_local *tp = netdev_priv(dev); | |
574 | ||
575 | tp->CMDqueue |= Command; | |
576 | tms380tr_chk_outstanding_cmds(dev); | |
577 | ||
578 | return; | |
579 | } | |
580 | ||
581 | static void tms380tr_timeout(struct net_device *dev) | |
582 | { | |
583 | /* | |
584 | * If we get here, some higher level has decided we are broken. | |
585 | * There should really be a "kick me" function call instead. | |
586 | * | |
587 | * Resetting the token ring adapter takes a long time so just | |
588 | * fake transmission time and go on trying. Our own timeout | |
589 | * routine is in tms380tr_timer_chk() | |
590 | */ | |
591 | dev->trans_start = jiffies; | |
592 | netif_wake_queue(dev); | |
593 | } | |
594 | ||
595 | /* | |
596 | * Gets skb from system, queues it and checks if it can be sent | |
597 | */ | |
598 | static int tms380tr_send_packet(struct sk_buff *skb, struct net_device *dev) | |
599 | { | |
600 | struct net_local *tp = netdev_priv(dev); | |
601 | int err; | |
602 | ||
603 | err = tms380tr_hardware_send_packet(skb, dev); | |
604 | if(tp->TplFree->NextTPLPtr->BusyFlag) | |
605 | netif_stop_queue(dev); | |
606 | return (err); | |
607 | } | |
608 | ||
609 | /* | |
610 | * Move frames into adapter tx queue | |
611 | */ | |
612 | static int tms380tr_hardware_send_packet(struct sk_buff *skb, struct net_device *dev) | |
613 | { | |
614 | TPL *tpl; | |
615 | short length; | |
616 | unsigned char *buf; | |
617 | unsigned long flags; | |
618 | int i; | |
619 | dma_addr_t dmabuf, newbuf; | |
620 | struct net_local *tp = netdev_priv(dev); | |
621 | ||
622 | /* Try to get a free TPL from the chain. | |
623 | * | |
624 | * NOTE: We *must* always leave one unused TPL in the chain, | |
625 | * because otherwise the adapter might send frames twice. | |
626 | */ | |
627 | spin_lock_irqsave(&tp->lock, flags); | |
628 | if(tp->TplFree->NextTPLPtr->BusyFlag) { /* No free TPL */ | |
629 | if (tms380tr_debug > 0) | |
630 | printk(KERN_DEBUG "%s: No free TPL\n", dev->name); | |
631 | spin_unlock_irqrestore(&tp->lock, flags); | |
632 | return 1; | |
633 | } | |
634 | ||
635 | dmabuf = 0; | |
636 | ||
637 | /* Is buffer reachable for Busmaster-DMA? */ | |
638 | ||
639 | length = skb->len; | |
504ff16c | 640 | dmabuf = dma_map_single(tp->pdev, skb->data, length, DMA_TO_DEVICE); |
1da177e4 LT |
641 | if(tp->dmalimit && (dmabuf + length > tp->dmalimit)) { |
642 | /* Copy frame to local buffer */ | |
504ff16c | 643 | dma_unmap_single(tp->pdev, dmabuf, length, DMA_TO_DEVICE); |
1da177e4 LT |
644 | dmabuf = 0; |
645 | i = tp->TplFree->TPLIndex; | |
646 | buf = tp->LocalTxBuffers[i]; | |
647 | memcpy(buf, skb->data, length); | |
648 | newbuf = ((char *)buf - (char *)tp) + tp->dmabuffer; | |
649 | } | |
650 | else { | |
651 | /* Send direct from skb->data */ | |
652 | newbuf = dmabuf; | |
653 | buf = skb->data; | |
654 | } | |
655 | /* Source address in packet? */ | |
656 | tms380tr_chk_src_addr(buf, dev->dev_addr); | |
657 | tp->LastSendTime = jiffies; | |
658 | tpl = tp->TplFree; /* Get the "free" TPL */ | |
659 | tpl->BusyFlag = 1; /* Mark TPL as busy */ | |
660 | tp->TplFree = tpl->NextTPLPtr; | |
661 | ||
662 | /* Save the skb for delayed return of skb to system */ | |
663 | tpl->Skb = skb; | |
664 | tpl->DMABuff = dmabuf; | |
665 | tpl->FragList[0].DataCount = cpu_to_be16((unsigned short)length); | |
666 | tpl->FragList[0].DataAddr = htonl(newbuf); | |
667 | ||
668 | /* Write the data length in the transmit list. */ | |
669 | tpl->FrameSize = cpu_to_be16((unsigned short)length); | |
670 | tpl->MData = buf; | |
671 | ||
672 | /* Transmit the frame and set the status values. */ | |
673 | tms380tr_write_tpl_status(tpl, TX_VALID | TX_START_FRAME | |
674 | | TX_END_FRAME | TX_PASS_SRC_ADDR | |
675 | | TX_FRAME_IRQ); | |
676 | ||
677 | /* Let adapter send the frame. */ | |
678 | tms380tr_exec_sifcmd(dev, CMD_TX_VALID); | |
679 | spin_unlock_irqrestore(&tp->lock, flags); | |
680 | ||
681 | return 0; | |
682 | } | |
683 | ||
684 | /* | |
685 | * Write the given value to the 'Status' field of the specified TPL. | |
686 | * NOTE: This function should be used whenever the status of any TPL must be | |
687 | * modified by the driver, because the compiler may otherwise change the | |
688 | * order of instructions such that writing the TPL status may be executed at | |
689 | * an undesireable time. When this function is used, the status is always | |
690 | * written when the function is called. | |
691 | */ | |
692 | static void tms380tr_write_tpl_status(TPL *tpl, unsigned int Status) | |
693 | { | |
694 | tpl->Status = Status; | |
695 | } | |
696 | ||
697 | static void tms380tr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr) | |
698 | { | |
699 | unsigned char SRBit; | |
700 | ||
701 | if((((unsigned long)frame[8]) & ~0x80) != 0) /* Compare 4 bytes */ | |
702 | return; | |
703 | if((unsigned short)frame[12] != 0) /* Compare 2 bytes */ | |
704 | return; | |
705 | ||
706 | SRBit = frame[8] & 0x80; | |
707 | memcpy(&frame[8], hw_addr, 6); | |
708 | frame[8] |= SRBit; | |
709 | ||
710 | return; | |
711 | } | |
712 | ||
713 | /* | |
714 | * The timer routine: Check if adapter still open and working, reopen if not. | |
715 | */ | |
716 | static void tms380tr_timer_chk(unsigned long data) | |
717 | { | |
718 | struct net_device *dev = (struct net_device*)data; | |
719 | struct net_local *tp = netdev_priv(dev); | |
720 | ||
721 | if(tp->HaltInProgress) | |
722 | return; | |
723 | ||
724 | tms380tr_chk_outstanding_cmds(dev); | |
725 | if(time_before(tp->LastSendTime + SEND_TIMEOUT, jiffies) | |
726 | && (tp->TplFree != tp->TplBusy)) | |
727 | { | |
728 | /* Anything to send, but stalled too long */ | |
729 | tp->LastSendTime = jiffies; | |
730 | tms380tr_exec_cmd(dev, OC_CLOSE); /* Does reopen automatically */ | |
731 | } | |
732 | ||
733 | tp->timer.expires = jiffies + 2*HZ; | |
734 | add_timer(&tp->timer); | |
735 | ||
736 | if(tp->AdapterOpenFlag || tp->ReOpenInProgress) | |
737 | return; | |
738 | tp->ReOpenInProgress = 1; | |
739 | tms380tr_open_adapter(dev); | |
740 | ||
741 | return; | |
742 | } | |
743 | ||
744 | /* | |
745 | * The typical workload of the driver: Handle the network interface interrupts. | |
746 | */ | |
7d12e780 | 747 | irqreturn_t tms380tr_interrupt(int irq, void *dev_id) |
1da177e4 LT |
748 | { |
749 | struct net_device *dev = dev_id; | |
750 | struct net_local *tp; | |
751 | unsigned short irq_type; | |
752 | int handled = 0; | |
753 | ||
1da177e4 LT |
754 | tp = netdev_priv(dev); |
755 | ||
756 | irq_type = SIFREADW(SIFSTS); | |
757 | ||
758 | while(irq_type & STS_SYSTEM_IRQ) { | |
759 | handled = 1; | |
760 | irq_type &= STS_IRQ_MASK; | |
761 | ||
762 | if(!tms380tr_chk_ssb(tp, irq_type)) { | |
763 | printk(KERN_DEBUG "%s: DATA LATE occurred\n", dev->name); | |
764 | break; | |
765 | } | |
766 | ||
767 | switch(irq_type) { | |
768 | case STS_IRQ_RECEIVE_STATUS: | |
769 | tms380tr_reset_interrupt(dev); | |
770 | tms380tr_rcv_status_irq(dev); | |
771 | break; | |
772 | ||
773 | case STS_IRQ_TRANSMIT_STATUS: | |
774 | /* Check if TRANSMIT.HALT command is complete */ | |
775 | if(tp->ssb.Parm[0] & COMMAND_COMPLETE) { | |
776 | tp->TransmitCommandActive = 0; | |
777 | tp->TransmitHaltScheduled = 0; | |
778 | ||
779 | /* Issue a new transmit command. */ | |
780 | tms380tr_exec_cmd(dev, OC_TRANSMIT); | |
781 | } | |
782 | ||
783 | tms380tr_reset_interrupt(dev); | |
784 | tms380tr_tx_status_irq(dev); | |
785 | break; | |
786 | ||
787 | case STS_IRQ_COMMAND_STATUS: | |
788 | /* The SSB contains status of last command | |
789 | * other than receive/transmit. | |
790 | */ | |
791 | tms380tr_cmd_status_irq(dev); | |
792 | break; | |
793 | ||
794 | case STS_IRQ_SCB_CLEAR: | |
795 | /* The SCB is free for another command. */ | |
796 | tp->ScbInUse = 0; | |
797 | tms380tr_chk_outstanding_cmds(dev); | |
798 | break; | |
799 | ||
800 | case STS_IRQ_RING_STATUS: | |
801 | tms380tr_ring_status_irq(dev); | |
802 | break; | |
803 | ||
804 | case STS_IRQ_ADAPTER_CHECK: | |
805 | tms380tr_chk_irq(dev); | |
806 | break; | |
807 | ||
808 | case STS_IRQ_LLC_STATUS: | |
809 | printk(KERN_DEBUG "tms380tr: unexpected LLC status IRQ\n"); | |
810 | break; | |
811 | ||
812 | case STS_IRQ_TIMER: | |
813 | printk(KERN_DEBUG "tms380tr: unexpected Timer IRQ\n"); | |
814 | break; | |
815 | ||
816 | case STS_IRQ_RECEIVE_PENDING: | |
817 | printk(KERN_DEBUG "tms380tr: unexpected Receive Pending IRQ\n"); | |
818 | break; | |
819 | ||
820 | default: | |
821 | printk(KERN_DEBUG "Unknown Token Ring IRQ (0x%04x)\n", irq_type); | |
822 | break; | |
823 | } | |
824 | ||
825 | /* Reset system interrupt if not already done. */ | |
826 | if(irq_type != STS_IRQ_TRANSMIT_STATUS | |
827 | && irq_type != STS_IRQ_RECEIVE_STATUS) { | |
828 | tms380tr_reset_interrupt(dev); | |
829 | } | |
830 | ||
831 | irq_type = SIFREADW(SIFSTS); | |
832 | } | |
833 | ||
834 | return IRQ_RETVAL(handled); | |
835 | } | |
836 | ||
837 | /* | |
838 | * Reset the INTERRUPT SYSTEM bit and issue SSB CLEAR command. | |
839 | */ | |
840 | static void tms380tr_reset_interrupt(struct net_device *dev) | |
841 | { | |
842 | struct net_local *tp = netdev_priv(dev); | |
843 | SSB *ssb = &tp->ssb; | |
844 | ||
845 | /* | |
846 | * [Workaround for "Data Late"] | |
847 | * Set all fields of the SSB to well-defined values so we can | |
848 | * check if the adapter has written the SSB. | |
849 | */ | |
850 | ||
851 | ssb->STS = (unsigned short) -1; | |
852 | ssb->Parm[0] = (unsigned short) -1; | |
853 | ssb->Parm[1] = (unsigned short) -1; | |
854 | ssb->Parm[2] = (unsigned short) -1; | |
855 | ||
856 | /* Free SSB by issuing SSB_CLEAR command after reading IRQ code | |
857 | * and clear STS_SYSTEM_IRQ bit: enable adapter for further interrupts. | |
858 | */ | |
859 | tms380tr_exec_sifcmd(dev, CMD_SSB_CLEAR | CMD_CLEAR_SYSTEM_IRQ); | |
860 | ||
861 | return; | |
862 | } | |
863 | ||
864 | /* | |
865 | * Check if the SSB has actually been written by the adapter. | |
866 | */ | |
867 | static unsigned char tms380tr_chk_ssb(struct net_local *tp, unsigned short IrqType) | |
868 | { | |
869 | SSB *ssb = &tp->ssb; /* The address of the SSB. */ | |
870 | ||
871 | /* C 0 1 2 INTERRUPT CODE | |
872 | * - - - - -------------- | |
873 | * 1 1 1 1 TRANSMIT STATUS | |
874 | * 1 1 1 1 RECEIVE STATUS | |
875 | * 1 ? ? 0 COMMAND STATUS | |
876 | * 0 0 0 0 SCB CLEAR | |
877 | * 1 1 0 0 RING STATUS | |
878 | * 0 0 0 0 ADAPTER CHECK | |
879 | * | |
880 | * 0 = SSB field not affected by interrupt | |
881 | * 1 = SSB field is affected by interrupt | |
882 | * | |
883 | * C = SSB ADDRESS +0: COMMAND | |
884 | * 0 = SSB ADDRESS +2: STATUS 0 | |
885 | * 1 = SSB ADDRESS +4: STATUS 1 | |
886 | * 2 = SSB ADDRESS +6: STATUS 2 | |
887 | */ | |
888 | ||
889 | /* Check if this interrupt does use the SSB. */ | |
890 | ||
891 | if(IrqType != STS_IRQ_TRANSMIT_STATUS | |
892 | && IrqType != STS_IRQ_RECEIVE_STATUS | |
893 | && IrqType != STS_IRQ_COMMAND_STATUS | |
894 | && IrqType != STS_IRQ_RING_STATUS) | |
895 | { | |
896 | return (1); /* SSB not involved. */ | |
897 | } | |
898 | ||
899 | /* Note: All fields of the SSB have been set to all ones (-1) after it | |
900 | * has last been used by the software (see DriverIsr()). | |
901 | * | |
902 | * Check if the affected SSB fields are still unchanged. | |
903 | */ | |
904 | ||
905 | if(ssb->STS == (unsigned short) -1) | |
906 | return (0); /* Command field not yet available. */ | |
907 | if(IrqType == STS_IRQ_COMMAND_STATUS) | |
908 | return (1); /* Status fields not always affected. */ | |
909 | if(ssb->Parm[0] == (unsigned short) -1) | |
910 | return (0); /* Status 1 field not yet available. */ | |
911 | if(IrqType == STS_IRQ_RING_STATUS) | |
912 | return (1); /* Status 2 & 3 fields not affected. */ | |
913 | ||
914 | /* Note: At this point, the interrupt is either TRANSMIT or RECEIVE. */ | |
915 | if(ssb->Parm[1] == (unsigned short) -1) | |
916 | return (0); /* Status 2 field not yet available. */ | |
917 | if(ssb->Parm[2] == (unsigned short) -1) | |
918 | return (0); /* Status 3 field not yet available. */ | |
919 | ||
920 | return (1); /* All SSB fields have been written by the adapter. */ | |
921 | } | |
922 | ||
923 | /* | |
924 | * Evaluates the command results status in the SSB status field. | |
925 | */ | |
926 | static void tms380tr_cmd_status_irq(struct net_device *dev) | |
927 | { | |
928 | struct net_local *tp = netdev_priv(dev); | |
929 | unsigned short ssb_cmd, ssb_parm_0; | |
930 | unsigned short ssb_parm_1; | |
931 | char *open_err = "Open error -"; | |
932 | char *code_err = "Open code -"; | |
933 | ||
934 | /* Copy the ssb values to local variables */ | |
935 | ssb_cmd = tp->ssb.STS; | |
936 | ssb_parm_0 = tp->ssb.Parm[0]; | |
937 | ssb_parm_1 = tp->ssb.Parm[1]; | |
938 | ||
939 | if(ssb_cmd == OPEN) | |
940 | { | |
941 | tp->Sleeping = 0; | |
942 | if(!tp->ReOpenInProgress) | |
943 | wake_up_interruptible(&tp->wait_for_tok_int); | |
944 | ||
945 | tp->OpenCommandIssued = 0; | |
946 | tp->ScbInUse = 0; | |
947 | ||
948 | if((ssb_parm_0 & 0x00FF) == GOOD_COMPLETION) | |
949 | { | |
950 | /* Success, the adapter is open. */ | |
951 | tp->LobeWireFaultLogged = 0; | |
952 | tp->AdapterOpenFlag = 1; | |
953 | tp->AdapterVirtOpenFlag = 1; | |
954 | tp->TransmitCommandActive = 0; | |
955 | tms380tr_exec_cmd(dev, OC_TRANSMIT); | |
956 | tms380tr_exec_cmd(dev, OC_RECEIVE); | |
957 | ||
958 | if(tp->ReOpenInProgress) | |
959 | tp->ReOpenInProgress = 0; | |
960 | ||
961 | return; | |
962 | } | |
963 | else /* The adapter did not open. */ | |
964 | { | |
965 | if(ssb_parm_0 & NODE_ADDR_ERROR) | |
966 | printk(KERN_INFO "%s: Node address error\n", | |
967 | dev->name); | |
968 | if(ssb_parm_0 & LIST_SIZE_ERROR) | |
969 | printk(KERN_INFO "%s: List size error\n", | |
970 | dev->name); | |
971 | if(ssb_parm_0 & BUF_SIZE_ERROR) | |
972 | printk(KERN_INFO "%s: Buffer size error\n", | |
973 | dev->name); | |
974 | if(ssb_parm_0 & TX_BUF_COUNT_ERROR) | |
975 | printk(KERN_INFO "%s: Tx buffer count error\n", | |
976 | dev->name); | |
977 | if(ssb_parm_0 & INVALID_OPEN_OPTION) | |
978 | printk(KERN_INFO "%s: Invalid open option\n", | |
979 | dev->name); | |
980 | if(ssb_parm_0 & OPEN_ERROR) | |
981 | { | |
982 | /* Show the open phase. */ | |
983 | switch(ssb_parm_0 & OPEN_PHASES_MASK) | |
984 | { | |
985 | case LOBE_MEDIA_TEST: | |
986 | if(!tp->LobeWireFaultLogged) | |
987 | { | |
988 | tp->LobeWireFaultLogged = 1; | |
989 | printk(KERN_INFO "%s: %s Lobe wire fault (check cable !).\n", dev->name, open_err); | |
990 | } | |
991 | tp->ReOpenInProgress = 1; | |
992 | tp->AdapterOpenFlag = 0; | |
993 | tp->AdapterVirtOpenFlag = 1; | |
994 | tms380tr_open_adapter(dev); | |
995 | return; | |
996 | ||
997 | case PHYSICAL_INSERTION: | |
998 | printk(KERN_INFO "%s: %s Physical insertion.\n", dev->name, open_err); | |
999 | break; | |
1000 | ||
1001 | case ADDRESS_VERIFICATION: | |
1002 | printk(KERN_INFO "%s: %s Address verification.\n", dev->name, open_err); | |
1003 | break; | |
1004 | ||
1005 | case PARTICIPATION_IN_RING_POLL: | |
1006 | printk(KERN_INFO "%s: %s Participation in ring poll.\n", dev->name, open_err); | |
1007 | break; | |
1008 | ||
1009 | case REQUEST_INITIALISATION: | |
1010 | printk(KERN_INFO "%s: %s Request initialisation.\n", dev->name, open_err); | |
1011 | break; | |
1012 | ||
1013 | case FULLDUPLEX_CHECK: | |
1014 | printk(KERN_INFO "%s: %s Full duplex check.\n", dev->name, open_err); | |
1015 | break; | |
1016 | ||
1017 | default: | |
1018 | printk(KERN_INFO "%s: %s Unknown open phase\n", dev->name, open_err); | |
1019 | break; | |
1020 | } | |
1021 | ||
1022 | /* Show the open errors. */ | |
1023 | switch(ssb_parm_0 & OPEN_ERROR_CODES_MASK) | |
1024 | { | |
1025 | case OPEN_FUNCTION_FAILURE: | |
1026 | printk(KERN_INFO "%s: %s OPEN_FUNCTION_FAILURE", dev->name, code_err); | |
1027 | tp->LastOpenStatus = | |
1028 | OPEN_FUNCTION_FAILURE; | |
1029 | break; | |
1030 | ||
1031 | case OPEN_SIGNAL_LOSS: | |
1032 | printk(KERN_INFO "%s: %s OPEN_SIGNAL_LOSS\n", dev->name, code_err); | |
1033 | tp->LastOpenStatus = | |
1034 | OPEN_SIGNAL_LOSS; | |
1035 | break; | |
1036 | ||
1037 | case OPEN_TIMEOUT: | |
1038 | printk(KERN_INFO "%s: %s OPEN_TIMEOUT\n", dev->name, code_err); | |
1039 | tp->LastOpenStatus = | |
1040 | OPEN_TIMEOUT; | |
1041 | break; | |
1042 | ||
1043 | case OPEN_RING_FAILURE: | |
1044 | printk(KERN_INFO "%s: %s OPEN_RING_FAILURE\n", dev->name, code_err); | |
1045 | tp->LastOpenStatus = | |
1046 | OPEN_RING_FAILURE; | |
1047 | break; | |
1048 | ||
1049 | case OPEN_RING_BEACONING: | |
1050 | printk(KERN_INFO "%s: %s OPEN_RING_BEACONING\n", dev->name, code_err); | |
1051 | tp->LastOpenStatus = | |
1052 | OPEN_RING_BEACONING; | |
1053 | break; | |
1054 | ||
1055 | case OPEN_DUPLICATE_NODEADDR: | |
1056 | printk(KERN_INFO "%s: %s OPEN_DUPLICATE_NODEADDR\n", dev->name, code_err); | |
1057 | tp->LastOpenStatus = | |
1058 | OPEN_DUPLICATE_NODEADDR; | |
1059 | break; | |
1060 | ||
1061 | case OPEN_REQUEST_INIT: | |
1062 | printk(KERN_INFO "%s: %s OPEN_REQUEST_INIT\n", dev->name, code_err); | |
1063 | tp->LastOpenStatus = | |
1064 | OPEN_REQUEST_INIT; | |
1065 | break; | |
1066 | ||
1067 | case OPEN_REMOVE_RECEIVED: | |
1068 | printk(KERN_INFO "%s: %s OPEN_REMOVE_RECEIVED", dev->name, code_err); | |
1069 | tp->LastOpenStatus = | |
1070 | OPEN_REMOVE_RECEIVED; | |
1071 | break; | |
1072 | ||
1073 | case OPEN_FULLDUPLEX_SET: | |
1074 | printk(KERN_INFO "%s: %s OPEN_FULLDUPLEX_SET\n", dev->name, code_err); | |
1075 | tp->LastOpenStatus = | |
1076 | OPEN_FULLDUPLEX_SET; | |
1077 | break; | |
1078 | ||
1079 | default: | |
1080 | printk(KERN_INFO "%s: %s Unknown open err code", dev->name, code_err); | |
1081 | tp->LastOpenStatus = | |
1082 | OPEN_FUNCTION_FAILURE; | |
1083 | break; | |
1084 | } | |
1085 | } | |
1086 | ||
1087 | tp->AdapterOpenFlag = 0; | |
1088 | tp->AdapterVirtOpenFlag = 0; | |
1089 | ||
1090 | return; | |
1091 | } | |
1092 | } | |
1093 | else | |
1094 | { | |
1095 | if(ssb_cmd != READ_ERROR_LOG) | |
1096 | return; | |
1097 | ||
1098 | /* Add values from the error log table to the MAC | |
1099 | * statistics counters and update the errorlogtable | |
1100 | * memory. | |
1101 | */ | |
1102 | tp->MacStat.line_errors += tp->errorlogtable.Line_Error; | |
1103 | tp->MacStat.burst_errors += tp->errorlogtable.Burst_Error; | |
1104 | tp->MacStat.A_C_errors += tp->errorlogtable.ARI_FCI_Error; | |
1105 | tp->MacStat.lost_frames += tp->errorlogtable.Lost_Frame_Error; | |
1106 | tp->MacStat.recv_congest_count += tp->errorlogtable.Rx_Congest_Error; | |
1107 | tp->MacStat.rx_errors += tp->errorlogtable.Rx_Congest_Error; | |
1108 | tp->MacStat.frame_copied_errors += tp->errorlogtable.Frame_Copied_Error; | |
1109 | tp->MacStat.token_errors += tp->errorlogtable.Token_Error; | |
1110 | tp->MacStat.dummy1 += tp->errorlogtable.DMA_Bus_Error; | |
1111 | tp->MacStat.dummy1 += tp->errorlogtable.DMA_Parity_Error; | |
1112 | tp->MacStat.abort_delimiters += tp->errorlogtable.AbortDelimeters; | |
1113 | tp->MacStat.frequency_errors += tp->errorlogtable.Frequency_Error; | |
1114 | tp->MacStat.internal_errors += tp->errorlogtable.Internal_Error; | |
1115 | } | |
1116 | ||
1117 | return; | |
1118 | } | |
1119 | ||
1120 | /* | |
1121 | * The inverse routine to tms380tr_open(). | |
1122 | */ | |
1123 | int tms380tr_close(struct net_device *dev) | |
1124 | { | |
1125 | struct net_local *tp = netdev_priv(dev); | |
1126 | netif_stop_queue(dev); | |
1127 | ||
1128 | del_timer(&tp->timer); | |
1129 | ||
1130 | /* Flush the Tx and disable Rx here. */ | |
1131 | ||
1132 | tp->HaltInProgress = 1; | |
1133 | tms380tr_exec_cmd(dev, OC_CLOSE); | |
1134 | tp->timer.expires = jiffies + 1*HZ; | |
1135 | tp->timer.function = tms380tr_timer_end_wait; | |
1136 | tp->timer.data = (unsigned long)dev; | |
1137 | add_timer(&tp->timer); | |
1138 | ||
1139 | tms380tr_enable_interrupts(dev); | |
1140 | ||
1141 | tp->Sleeping = 1; | |
1142 | interruptible_sleep_on(&tp->wait_for_tok_int); | |
1143 | tp->TransmitCommandActive = 0; | |
1144 | ||
1145 | del_timer(&tp->timer); | |
1146 | tms380tr_disable_interrupts(dev); | |
1147 | ||
1148 | #ifdef CONFIG_ISA | |
1149 | if(dev->dma > 0) | |
1150 | { | |
1151 | unsigned long flags=claim_dma_lock(); | |
1152 | disable_dma(dev->dma); | |
1153 | release_dma_lock(flags); | |
1154 | } | |
1155 | #endif | |
1156 | ||
1157 | SIFWRITEW(0xFF00, SIFCMD); | |
1158 | #if 0 | |
1159 | if(dev->dma > 0) /* what the? */ | |
1160 | SIFWRITEB(0xff, POSREG); | |
1161 | #endif | |
1162 | tms380tr_cancel_tx_queue(tp); | |
1163 | ||
1164 | return (0); | |
1165 | } | |
1166 | ||
1167 | /* | |
1168 | * Get the current statistics. This may be called with the card open | |
1169 | * or closed. | |
1170 | */ | |
1171 | static struct net_device_stats *tms380tr_get_stats(struct net_device *dev) | |
1172 | { | |
1173 | struct net_local *tp = netdev_priv(dev); | |
1174 | ||
1175 | return ((struct net_device_stats *)&tp->MacStat); | |
1176 | } | |
1177 | ||
1178 | /* | |
1179 | * Set or clear the multicast filter for this adapter. | |
1180 | */ | |
1181 | static void tms380tr_set_multicast_list(struct net_device *dev) | |
1182 | { | |
1183 | struct net_local *tp = netdev_priv(dev); | |
1184 | unsigned int OpenOptions; | |
1185 | ||
1186 | OpenOptions = tp->ocpl.OPENOptions & | |
1187 | ~(PASS_ADAPTER_MAC_FRAMES | |
1188 | | PASS_ATTENTION_FRAMES | |
1189 | | PASS_BEACON_MAC_FRAMES | |
1190 | | COPY_ALL_MAC_FRAMES | |
1191 | | COPY_ALL_NON_MAC_FRAMES); | |
1192 | ||
1193 | tp->ocpl.FunctAddr = 0; | |
1194 | ||
1195 | if(dev->flags & IFF_PROMISC) | |
1196 | /* Enable promiscuous mode */ | |
1197 | OpenOptions |= COPY_ALL_NON_MAC_FRAMES | | |
1198 | COPY_ALL_MAC_FRAMES; | |
1199 | else | |
1200 | { | |
1201 | if(dev->flags & IFF_ALLMULTI) | |
1202 | { | |
1203 | /* Disable promiscuous mode, use normal mode. */ | |
1204 | tp->ocpl.FunctAddr = 0xFFFFFFFF; | |
1205 | } | |
1206 | else | |
1207 | { | |
1208 | int i; | |
1209 | struct dev_mc_list *mclist = dev->mc_list; | |
1210 | for (i=0; i< dev->mc_count; i++) | |
1211 | { | |
1212 | ((char *)(&tp->ocpl.FunctAddr))[0] |= | |
1213 | mclist->dmi_addr[2]; | |
1214 | ((char *)(&tp->ocpl.FunctAddr))[1] |= | |
1215 | mclist->dmi_addr[3]; | |
1216 | ((char *)(&tp->ocpl.FunctAddr))[2] |= | |
1217 | mclist->dmi_addr[4]; | |
1218 | ((char *)(&tp->ocpl.FunctAddr))[3] |= | |
1219 | mclist->dmi_addr[5]; | |
1220 | mclist = mclist->next; | |
1221 | } | |
1222 | } | |
1223 | tms380tr_exec_cmd(dev, OC_SET_FUNCT_ADDR); | |
1224 | } | |
1225 | ||
1226 | tp->ocpl.OPENOptions = OpenOptions; | |
1227 | tms380tr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS); | |
1228 | return; | |
1229 | } | |
1230 | ||
1231 | /* | |
1232 | * Wait for some time (microseconds) | |
1233 | */ | |
1234 | void tms380tr_wait(unsigned long time) | |
1235 | { | |
1236 | #if 0 | |
1237 | long tmp; | |
1238 | ||
1239 | tmp = jiffies + time/(1000000/HZ); | |
1240 | do { | |
3173c890 | 1241 | tmp = schedule_timeout_interruptible(tmp); |
1da177e4 LT |
1242 | } while(time_after(tmp, jiffies)); |
1243 | #else | |
1244 | udelay(time); | |
1245 | #endif | |
1246 | return; | |
1247 | } | |
1248 | ||
1249 | /* | |
1250 | * Write a command value to the SIFCMD register | |
1251 | */ | |
1252 | static void tms380tr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue) | |
1253 | { | |
1254 | unsigned short cmd; | |
1255 | unsigned short SifStsValue; | |
1256 | unsigned long loop_counter; | |
1257 | ||
1258 | WriteValue = ((WriteValue ^ CMD_SYSTEM_IRQ) | CMD_INTERRUPT_ADAPTER); | |
1259 | cmd = (unsigned short)WriteValue; | |
1260 | loop_counter = 0,5 * 800000; | |
1261 | do { | |
1262 | SifStsValue = SIFREADW(SIFSTS); | |
1263 | } while((SifStsValue & CMD_INTERRUPT_ADAPTER) && loop_counter--); | |
1264 | SIFWRITEW(cmd, SIFCMD); | |
1265 | ||
1266 | return; | |
1267 | } | |
1268 | ||
1269 | /* | |
1270 | * Processes adapter hardware reset, halts adapter and downloads firmware, | |
1271 | * clears the halt bit. | |
1272 | */ | |
1273 | static int tms380tr_reset_adapter(struct net_device *dev) | |
1274 | { | |
1275 | struct net_local *tp = netdev_priv(dev); | |
1276 | unsigned short *fw_ptr; | |
1277 | unsigned short count, c, count2; | |
1278 | const struct firmware *fw_entry = NULL; | |
1279 | ||
504ff16c | 1280 | if (request_firmware(&fw_entry, "tms380tr.bin", tp->pdev) != 0) { |
1da177e4 LT |
1281 | printk(KERN_ALERT "%s: firmware %s is missing, cannot start.\n", |
1282 | dev->name, "tms380tr.bin"); | |
1283 | return (-1); | |
1284 | } | |
1285 | ||
1286 | fw_ptr = (unsigned short *)fw_entry->data; | |
1287 | count2 = fw_entry->size / 2; | |
1288 | ||
1289 | /* Hardware adapter reset */ | |
1290 | SIFWRITEW(ACL_ARESET, SIFACL); | |
1291 | tms380tr_wait(40); | |
1292 | ||
1293 | c = SIFREADW(SIFACL); | |
1294 | tms380tr_wait(20); | |
1295 | ||
1296 | if(dev->dma == 0) /* For PCI adapters */ | |
1297 | { | |
1298 | c &= ~(ACL_NSELOUT0 | ACL_NSELOUT1); /* Clear bits */ | |
1299 | if(tp->setnselout) | |
1300 | c |= (*tp->setnselout)(dev); | |
1301 | } | |
1302 | ||
1303 | /* In case a command is pending - forget it */ | |
1304 | tp->ScbInUse = 0; | |
1305 | ||
1306 | c &= ~ACL_ARESET; /* Clear adapter reset bit */ | |
1307 | c |= ACL_CPHALT; /* Halt adapter CPU, allow download */ | |
1308 | c |= ACL_BOOT; | |
1309 | c |= ACL_SINTEN; | |
1310 | c &= ~ACL_PSDMAEN; /* Clear pseudo dma bit */ | |
1311 | SIFWRITEW(c, SIFACL); | |
1312 | tms380tr_wait(40); | |
1313 | ||
1314 | count = 0; | |
1315 | /* Download firmware via DIO interface: */ | |
1316 | do { | |
1317 | if (count2 < 3) continue; | |
1318 | ||
1319 | /* Download first address part */ | |
1320 | SIFWRITEW(*fw_ptr, SIFADX); | |
1321 | fw_ptr++; | |
1322 | count2--; | |
1323 | /* Download second address part */ | |
1324 | SIFWRITEW(*fw_ptr, SIFADD); | |
1325 | fw_ptr++; | |
1326 | count2--; | |
1327 | ||
1328 | if((count = *fw_ptr) != 0) /* Load loop counter */ | |
1329 | { | |
1330 | fw_ptr++; /* Download block data */ | |
1331 | count2--; | |
1332 | if (count > count2) continue; | |
1333 | ||
1334 | for(; count > 0; count--) | |
1335 | { | |
1336 | SIFWRITEW(*fw_ptr, SIFINC); | |
1337 | fw_ptr++; | |
1338 | count2--; | |
1339 | } | |
1340 | } | |
1341 | else /* Stop, if last block downloaded */ | |
1342 | { | |
1343 | c = SIFREADW(SIFACL); | |
1344 | c &= (~ACL_CPHALT | ACL_SINTEN); | |
1345 | ||
1346 | /* Clear CPHALT and start BUD */ | |
1347 | SIFWRITEW(c, SIFACL); | |
1348 | if (fw_entry) | |
1349 | release_firmware(fw_entry); | |
1350 | return (1); | |
1351 | } | |
1352 | } while(count == 0); | |
1353 | ||
1354 | if (fw_entry) | |
1355 | release_firmware(fw_entry); | |
1356 | printk(KERN_INFO "%s: Adapter Download Failed\n", dev->name); | |
1357 | return (-1); | |
1358 | } | |
1359 | ||
1360 | /* | |
1361 | * Starts bring up diagnostics of token ring adapter and evaluates | |
1362 | * diagnostic results. | |
1363 | */ | |
1364 | static int tms380tr_bringup_diags(struct net_device *dev) | |
1365 | { | |
1366 | int loop_cnt, retry_cnt; | |
1367 | unsigned short Status; | |
1368 | ||
1369 | tms380tr_wait(HALF_SECOND); | |
1370 | tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET); | |
1371 | tms380tr_wait(HALF_SECOND); | |
1372 | ||
1373 | retry_cnt = BUD_MAX_RETRIES; /* maximal number of retrys */ | |
1374 | ||
1375 | do { | |
1376 | retry_cnt--; | |
1377 | if(tms380tr_debug > 3) | |
1378 | printk(KERN_DEBUG "BUD-Status: "); | |
1379 | loop_cnt = BUD_MAX_LOOPCNT; /* maximum: three seconds*/ | |
1380 | do { /* Inspect BUD results */ | |
1381 | loop_cnt--; | |
1382 | tms380tr_wait(HALF_SECOND); | |
1383 | Status = SIFREADW(SIFSTS); | |
1384 | Status &= STS_MASK; | |
1385 | ||
1386 | if(tms380tr_debug > 3) | |
1387 | printk(KERN_DEBUG " %04X \n", Status); | |
1388 | /* BUD successfully completed */ | |
1389 | if(Status == STS_INITIALIZE) | |
1390 | return (1); | |
1391 | /* Unrecoverable hardware error, BUD not completed? */ | |
1392 | } while((loop_cnt > 0) && ((Status & (STS_ERROR | STS_TEST)) | |
1393 | != (STS_ERROR | STS_TEST))); | |
1394 | ||
1395 | /* Error preventing completion of BUD */ | |
1396 | if(retry_cnt > 0) | |
1397 | { | |
1398 | printk(KERN_INFO "%s: Adapter Software Reset.\n", | |
1399 | dev->name); | |
1400 | tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET); | |
1401 | tms380tr_wait(HALF_SECOND); | |
1402 | } | |
1403 | } while(retry_cnt > 0); | |
1404 | ||
1405 | Status = SIFREADW(SIFSTS); | |
1406 | ||
1407 | printk(KERN_INFO "%s: Hardware error\n", dev->name); | |
1408 | /* Hardware error occurred! */ | |
1409 | Status &= 0x001f; | |
1410 | if (Status & 0x0010) | |
1411 | printk(KERN_INFO "%s: BUD Error: Timeout\n", dev->name); | |
1412 | else if ((Status & 0x000f) > 6) | |
1413 | printk(KERN_INFO "%s: BUD Error: Illegal Failure\n", dev->name); | |
1414 | else | |
1415 | printk(KERN_INFO "%s: Bring Up Diagnostics Error (%04X) occurred\n", dev->name, Status & 0x000f); | |
1416 | ||
1417 | return (-1); | |
1418 | } | |
1419 | ||
1420 | /* | |
1421 | * Copy initialisation data to adapter memory, beginning at address | |
1422 | * 1:0A00; Starting DMA test and evaluating result bits. | |
1423 | */ | |
1424 | static int tms380tr_init_adapter(struct net_device *dev) | |
1425 | { | |
1426 | struct net_local *tp = netdev_priv(dev); | |
1427 | ||
1428 | const unsigned char SCB_Test[6] = {0x00, 0x00, 0xC1, 0xE2, 0xD4, 0x8B}; | |
1429 | const unsigned char SSB_Test[8] = {0xFF, 0xFF, 0xD1, 0xD7, | |
1430 | 0xC5, 0xD9, 0xC3, 0xD4}; | |
1431 | void *ptr = (void *)&tp->ipb; | |
1432 | unsigned short *ipb_ptr = (unsigned short *)ptr; | |
1433 | unsigned char *cb_ptr = (unsigned char *) &tp->scb; | |
1434 | unsigned char *sb_ptr = (unsigned char *) &tp->ssb; | |
1435 | unsigned short Status; | |
1436 | int i, loop_cnt, retry_cnt; | |
1437 | ||
1438 | /* Normalize: byte order low/high, word order high/low! (only IPB!) */ | |
1439 | tp->ipb.SCB_Addr = SWAPW(((char *)&tp->scb - (char *)tp) + tp->dmabuffer); | |
1440 | tp->ipb.SSB_Addr = SWAPW(((char *)&tp->ssb - (char *)tp) + tp->dmabuffer); | |
1441 | ||
1442 | if(tms380tr_debug > 3) | |
1443 | { | |
1444 | printk(KERN_DEBUG "%s: buffer (real): %lx\n", dev->name, (long) &tp->scb); | |
1445 | printk(KERN_DEBUG "%s: buffer (virt): %lx\n", dev->name, (long) ((char *)&tp->scb - (char *)tp) + (long) tp->dmabuffer); | |
1446 | printk(KERN_DEBUG "%s: buffer (DMA) : %lx\n", dev->name, (long) tp->dmabuffer); | |
1447 | printk(KERN_DEBUG "%s: buffer (tp) : %lx\n", dev->name, (long) tp); | |
1448 | } | |
1449 | /* Maximum: three initialization retries */ | |
1450 | retry_cnt = INIT_MAX_RETRIES; | |
1451 | ||
1452 | do { | |
1453 | retry_cnt--; | |
1454 | ||
1455 | /* Transfer initialization block */ | |
1456 | SIFWRITEW(0x0001, SIFADX); | |
1457 | ||
1458 | /* To address 0001:0A00 of adapter RAM */ | |
1459 | SIFWRITEW(0x0A00, SIFADD); | |
1460 | ||
1461 | /* Write 11 words to adapter RAM */ | |
1462 | for(i = 0; i < 11; i++) | |
1463 | SIFWRITEW(ipb_ptr[i], SIFINC); | |
1464 | ||
1465 | /* Execute SCB adapter command */ | |
1466 | tms380tr_exec_sifcmd(dev, CMD_EXECUTE); | |
1467 | ||
1468 | loop_cnt = INIT_MAX_LOOPCNT; /* Maximum: 11 seconds */ | |
1469 | ||
1470 | /* While remaining retries, no error and not completed */ | |
1471 | do { | |
1472 | Status = 0; | |
1473 | loop_cnt--; | |
1474 | tms380tr_wait(HALF_SECOND); | |
1475 | ||
1476 | /* Mask interesting status bits */ | |
1477 | Status = SIFREADW(SIFSTS); | |
1478 | Status &= STS_MASK; | |
1479 | } while(((Status &(STS_INITIALIZE | STS_ERROR | STS_TEST)) != 0) | |
1480 | && ((Status & STS_ERROR) == 0) && (loop_cnt != 0)); | |
1481 | ||
1482 | if((Status & (STS_INITIALIZE | STS_ERROR | STS_TEST)) == 0) | |
1483 | { | |
1484 | /* Initialization completed without error */ | |
1485 | i = 0; | |
1486 | do { /* Test if contents of SCB is valid */ | |
1487 | if(SCB_Test[i] != *(cb_ptr + i)) | |
1488 | { | |
1489 | printk(KERN_INFO "%s: DMA failed\n", dev->name); | |
1490 | /* DMA data error: wrong data in SCB */ | |
1491 | return (-1); | |
1492 | } | |
1493 | i++; | |
1494 | } while(i < 6); | |
1495 | ||
1496 | i = 0; | |
1497 | do { /* Test if contents of SSB is valid */ | |
1498 | if(SSB_Test[i] != *(sb_ptr + i)) | |
1499 | /* DMA data error: wrong data in SSB */ | |
1500 | return (-1); | |
1501 | i++; | |
1502 | } while (i < 8); | |
1503 | ||
1504 | return (1); /* Adapter successfully initialized */ | |
1505 | } | |
1506 | else | |
1507 | { | |
1508 | if((Status & STS_ERROR) != 0) | |
1509 | { | |
1510 | /* Initialization error occurred */ | |
1511 | Status = SIFREADW(SIFSTS); | |
1512 | Status &= STS_ERROR_MASK; | |
1513 | /* ShowInitialisationErrorCode(Status); */ | |
1514 | printk(KERN_INFO "%s: Status error: %d\n", dev->name, Status); | |
1515 | return (-1); /* Unrecoverable error */ | |
1516 | } | |
1517 | else | |
1518 | { | |
1519 | if(retry_cnt > 0) | |
1520 | { | |
1521 | /* Reset adapter and try init again */ | |
1522 | tms380tr_exec_sifcmd(dev, EXEC_SOFT_RESET); | |
1523 | tms380tr_wait(HALF_SECOND); | |
1524 | } | |
1525 | } | |
1526 | } | |
1527 | } while(retry_cnt > 0); | |
1528 | ||
1529 | printk(KERN_INFO "%s: Retry exceeded\n", dev->name); | |
1530 | return (-1); | |
1531 | } | |
1532 | ||
1533 | /* | |
1534 | * Check for outstanding commands in command queue and tries to execute | |
1535 | * command immediately. Corresponding command flag in command queue is cleared. | |
1536 | */ | |
1537 | static void tms380tr_chk_outstanding_cmds(struct net_device *dev) | |
1538 | { | |
1539 | struct net_local *tp = netdev_priv(dev); | |
1540 | unsigned long Addr = 0; | |
1541 | ||
1542 | if(tp->CMDqueue == 0) | |
1543 | return; /* No command execution */ | |
1544 | ||
1545 | /* If SCB in use: no command */ | |
1546 | if(tp->ScbInUse == 1) | |
1547 | return; | |
1548 | ||
1549 | /* Check if adapter is opened, avoiding COMMAND_REJECT | |
1550 | * interrupt by the adapter! | |
1551 | */ | |
1552 | if(tp->AdapterOpenFlag == 0) | |
1553 | { | |
1554 | if(tp->CMDqueue & OC_OPEN) | |
1555 | { | |
1556 | /* Execute OPEN command */ | |
1557 | tp->CMDqueue ^= OC_OPEN; | |
1558 | ||
1559 | Addr = htonl(((char *)&tp->ocpl - (char *)tp) + tp->dmabuffer); | |
1560 | tp->scb.Parm[0] = LOWORD(Addr); | |
1561 | tp->scb.Parm[1] = HIWORD(Addr); | |
1562 | tp->scb.CMD = OPEN; | |
1563 | } | |
1564 | else | |
1565 | /* No OPEN command queued, but adapter closed. Note: | |
1566 | * We'll try to re-open the adapter in DriverPoll() | |
1567 | */ | |
1568 | return; /* No adapter command issued */ | |
1569 | } | |
1570 | else | |
1571 | { | |
1572 | /* Adapter is open; evaluate command queue: try to execute | |
1573 | * outstanding commands (depending on priority!) CLOSE | |
1574 | * command queued | |
1575 | */ | |
1576 | if(tp->CMDqueue & OC_CLOSE) | |
1577 | { | |
1578 | tp->CMDqueue ^= OC_CLOSE; | |
1579 | tp->AdapterOpenFlag = 0; | |
1580 | tp->scb.Parm[0] = 0; /* Parm[0], Parm[1] are ignored */ | |
1581 | tp->scb.Parm[1] = 0; /* but should be set to zero! */ | |
1582 | tp->scb.CMD = CLOSE; | |
1583 | if(!tp->HaltInProgress) | |
1584 | tp->CMDqueue |= OC_OPEN; /* re-open adapter */ | |
1585 | else | |
1586 | tp->CMDqueue = 0; /* no more commands */ | |
1587 | } | |
1588 | else | |
1589 | { | |
1590 | if(tp->CMDqueue & OC_RECEIVE) | |
1591 | { | |
1592 | tp->CMDqueue ^= OC_RECEIVE; | |
1593 | Addr = htonl(((char *)tp->RplHead - (char *)tp) + tp->dmabuffer); | |
1594 | tp->scb.Parm[0] = LOWORD(Addr); | |
1595 | tp->scb.Parm[1] = HIWORD(Addr); | |
1596 | tp->scb.CMD = RECEIVE; | |
1597 | } | |
1598 | else | |
1599 | { | |
1600 | if(tp->CMDqueue & OC_TRANSMIT_HALT) | |
1601 | { | |
1602 | /* NOTE: TRANSMIT.HALT must be checked | |
1603 | * before TRANSMIT. | |
1604 | */ | |
1605 | tp->CMDqueue ^= OC_TRANSMIT_HALT; | |
1606 | tp->scb.CMD = TRANSMIT_HALT; | |
1607 | ||
1608 | /* Parm[0] and Parm[1] are ignored | |
1609 | * but should be set to zero! | |
1610 | */ | |
1611 | tp->scb.Parm[0] = 0; | |
1612 | tp->scb.Parm[1] = 0; | |
1613 | } | |
1614 | else | |
1615 | { | |
1616 | if(tp->CMDqueue & OC_TRANSMIT) | |
1617 | { | |
1618 | /* NOTE: TRANSMIT must be | |
1619 | * checked after TRANSMIT.HALT | |
1620 | */ | |
1621 | if(tp->TransmitCommandActive) | |
1622 | { | |
1623 | if(!tp->TransmitHaltScheduled) | |
1624 | { | |
1625 | tp->TransmitHaltScheduled = 1; | |
1626 | tms380tr_exec_cmd(dev, OC_TRANSMIT_HALT) ; | |
1627 | } | |
1628 | tp->TransmitCommandActive = 0; | |
1629 | return; | |
1630 | } | |
1631 | ||
1632 | tp->CMDqueue ^= OC_TRANSMIT; | |
1633 | tms380tr_cancel_tx_queue(tp); | |
1634 | Addr = htonl(((char *)tp->TplBusy - (char *)tp) + tp->dmabuffer); | |
1635 | tp->scb.Parm[0] = LOWORD(Addr); | |
1636 | tp->scb.Parm[1] = HIWORD(Addr); | |
1637 | tp->scb.CMD = TRANSMIT; | |
1638 | tp->TransmitCommandActive = 1; | |
1639 | } | |
1640 | else | |
1641 | { | |
1642 | if(tp->CMDqueue & OC_MODIFY_OPEN_PARMS) | |
1643 | { | |
1644 | tp->CMDqueue ^= OC_MODIFY_OPEN_PARMS; | |
1645 | tp->scb.Parm[0] = tp->ocpl.OPENOptions; /* new OPEN options*/ | |
1646 | tp->scb.Parm[0] |= ENABLE_FULL_DUPLEX_SELECTION; | |
1647 | tp->scb.Parm[1] = 0; /* is ignored but should be zero */ | |
1648 | tp->scb.CMD = MODIFY_OPEN_PARMS; | |
1649 | } | |
1650 | else | |
1651 | { | |
1652 | if(tp->CMDqueue & OC_SET_FUNCT_ADDR) | |
1653 | { | |
1654 | tp->CMDqueue ^= OC_SET_FUNCT_ADDR; | |
1655 | tp->scb.Parm[0] = LOWORD(tp->ocpl.FunctAddr); | |
1656 | tp->scb.Parm[1] = HIWORD(tp->ocpl.FunctAddr); | |
1657 | tp->scb.CMD = SET_FUNCT_ADDR; | |
1658 | } | |
1659 | else | |
1660 | { | |
1661 | if(tp->CMDqueue & OC_SET_GROUP_ADDR) | |
1662 | { | |
1663 | tp->CMDqueue ^= OC_SET_GROUP_ADDR; | |
1664 | tp->scb.Parm[0] = LOWORD(tp->ocpl.GroupAddr); | |
1665 | tp->scb.Parm[1] = HIWORD(tp->ocpl.GroupAddr); | |
1666 | tp->scb.CMD = SET_GROUP_ADDR; | |
1667 | } | |
1668 | else | |
1669 | { | |
1670 | if(tp->CMDqueue & OC_READ_ERROR_LOG) | |
1671 | { | |
1672 | tp->CMDqueue ^= OC_READ_ERROR_LOG; | |
1673 | Addr = htonl(((char *)&tp->errorlogtable - (char *)tp) + tp->dmabuffer); | |
1674 | tp->scb.Parm[0] = LOWORD(Addr); | |
1675 | tp->scb.Parm[1] = HIWORD(Addr); | |
1676 | tp->scb.CMD = READ_ERROR_LOG; | |
1677 | } | |
1678 | else | |
1679 | { | |
1680 | printk(KERN_WARNING "CheckForOutstandingCommand: unknown Command\n"); | |
1681 | tp->CMDqueue = 0; | |
1682 | return; | |
1683 | } | |
1684 | } | |
1685 | } | |
1686 | } | |
1687 | } | |
1688 | } | |
1689 | } | |
1690 | } | |
1691 | } | |
1692 | ||
1693 | tp->ScbInUse = 1; /* Set semaphore: SCB in use. */ | |
1694 | ||
1695 | /* Execute SCB and generate IRQ when done. */ | |
1696 | tms380tr_exec_sifcmd(dev, CMD_EXECUTE | CMD_SCB_REQUEST); | |
1697 | ||
1698 | return; | |
1699 | } | |
1700 | ||
1701 | /* | |
1702 | * IRQ conditions: signal loss on the ring, transmit or receive of beacon | |
1703 | * frames (disabled if bit 1 of OPEN option is set); report error MAC | |
1704 | * frame transmit (disabled if bit 2 of OPEN option is set); open or short | |
1705 | * circuit fault on the lobe is detected; remove MAC frame received; | |
1706 | * error counter overflow (255); opened adapter is the only station in ring. | |
1707 | * After some of the IRQs the adapter is closed! | |
1708 | */ | |
1709 | static void tms380tr_ring_status_irq(struct net_device *dev) | |
1710 | { | |
1711 | struct net_local *tp = netdev_priv(dev); | |
1712 | ||
1713 | tp->CurrentRingStatus = be16_to_cpu((unsigned short)tp->ssb.Parm[0]); | |
1714 | ||
1715 | /* First: fill up statistics */ | |
1716 | if(tp->ssb.Parm[0] & SIGNAL_LOSS) | |
1717 | { | |
1718 | printk(KERN_INFO "%s: Signal Loss\n", dev->name); | |
1719 | tp->MacStat.line_errors++; | |
1720 | } | |
1721 | ||
1722 | /* Adapter is closed, but initialized */ | |
1723 | if(tp->ssb.Parm[0] & LOBE_WIRE_FAULT) | |
1724 | { | |
1725 | printk(KERN_INFO "%s: Lobe Wire Fault, Reopen Adapter\n", | |
1726 | dev->name); | |
1727 | tp->MacStat.line_errors++; | |
1728 | } | |
1729 | ||
1730 | if(tp->ssb.Parm[0] & RING_RECOVERY) | |
1731 | printk(KERN_INFO "%s: Ring Recovery\n", dev->name); | |
1732 | ||
1733 | /* Counter overflow: read error log */ | |
1734 | if(tp->ssb.Parm[0] & COUNTER_OVERFLOW) | |
1735 | { | |
1736 | printk(KERN_INFO "%s: Counter Overflow\n", dev->name); | |
1737 | tms380tr_exec_cmd(dev, OC_READ_ERROR_LOG); | |
1738 | } | |
1739 | ||
1740 | /* Adapter is closed, but initialized */ | |
1741 | if(tp->ssb.Parm[0] & REMOVE_RECEIVED) | |
1742 | printk(KERN_INFO "%s: Remove Received, Reopen Adapter\n", | |
1743 | dev->name); | |
1744 | ||
1745 | /* Adapter is closed, but initialized */ | |
1746 | if(tp->ssb.Parm[0] & AUTO_REMOVAL_ERROR) | |
1747 | printk(KERN_INFO "%s: Auto Removal Error, Reopen Adapter\n", | |
1748 | dev->name); | |
1749 | ||
1750 | if(tp->ssb.Parm[0] & HARD_ERROR) | |
1751 | printk(KERN_INFO "%s: Hard Error\n", dev->name); | |
1752 | ||
1753 | if(tp->ssb.Parm[0] & SOFT_ERROR) | |
1754 | printk(KERN_INFO "%s: Soft Error\n", dev->name); | |
1755 | ||
1756 | if(tp->ssb.Parm[0] & TRANSMIT_BEACON) | |
1757 | printk(KERN_INFO "%s: Transmit Beacon\n", dev->name); | |
1758 | ||
1759 | if(tp->ssb.Parm[0] & SINGLE_STATION) | |
1760 | printk(KERN_INFO "%s: Single Station\n", dev->name); | |
1761 | ||
1762 | /* Check if adapter has been closed */ | |
1763 | if(tp->ssb.Parm[0] & ADAPTER_CLOSED) | |
1764 | { | |
1765 | printk(KERN_INFO "%s: Adapter closed (Reopening)," | |
1766 | "CurrentRingStat %x\n", | |
1767 | dev->name, tp->CurrentRingStatus); | |
1768 | tp->AdapterOpenFlag = 0; | |
1769 | tms380tr_open_adapter(dev); | |
1770 | } | |
1771 | ||
1772 | return; | |
1773 | } | |
1774 | ||
1775 | /* | |
1776 | * Issued if adapter has encountered an unrecoverable hardware | |
1777 | * or software error. | |
1778 | */ | |
1779 | static void tms380tr_chk_irq(struct net_device *dev) | |
1780 | { | |
1781 | int i; | |
1782 | unsigned short AdapterCheckBlock[4]; | |
1783 | struct net_local *tp = netdev_priv(dev); | |
1784 | ||
1785 | tp->AdapterOpenFlag = 0; /* Adapter closed now */ | |
1786 | ||
1787 | /* Page number of adapter memory */ | |
1788 | SIFWRITEW(0x0001, SIFADX); | |
1789 | /* Address offset */ | |
1790 | SIFWRITEW(CHECKADDR, SIFADR); | |
1791 | ||
1792 | /* Reading 8 byte adapter check block. */ | |
1793 | for(i = 0; i < 4; i++) | |
1794 | AdapterCheckBlock[i] = SIFREADW(SIFINC); | |
1795 | ||
1796 | if(tms380tr_debug > 3) | |
1797 | { | |
1798 | printk(KERN_DEBUG "%s: AdapterCheckBlock: ", dev->name); | |
1799 | for (i = 0; i < 4; i++) | |
1800 | printk("%04X", AdapterCheckBlock[i]); | |
1801 | printk("\n"); | |
1802 | } | |
1803 | ||
1804 | switch(AdapterCheckBlock[0]) | |
1805 | { | |
1806 | case DIO_PARITY: | |
1807 | printk(KERN_INFO "%s: DIO parity error\n", dev->name); | |
1808 | break; | |
1809 | ||
1810 | case DMA_READ_ABORT: | |
1811 | printk(KERN_INFO "%s DMA read operation aborted:\n", | |
1812 | dev->name); | |
1813 | switch (AdapterCheckBlock[1]) | |
1814 | { | |
1815 | case 0: | |
1816 | printk(KERN_INFO "Timeout\n"); | |
1817 | printk(KERN_INFO "Address: %04X %04X\n", | |
1818 | AdapterCheckBlock[2], | |
1819 | AdapterCheckBlock[3]); | |
1820 | break; | |
1821 | ||
1822 | case 1: | |
1823 | printk(KERN_INFO "Parity error\n"); | |
1824 | printk(KERN_INFO "Address: %04X %04X\n", | |
1825 | AdapterCheckBlock[2], | |
1826 | AdapterCheckBlock[3]); | |
1827 | break; | |
1828 | ||
1829 | case 2: | |
1830 | printk(KERN_INFO "Bus error\n"); | |
1831 | printk(KERN_INFO "Address: %04X %04X\n", | |
1832 | AdapterCheckBlock[2], | |
1833 | AdapterCheckBlock[3]); | |
1834 | break; | |
1835 | ||
1836 | default: | |
1837 | printk(KERN_INFO "Unknown error.\n"); | |
1838 | break; | |
1839 | } | |
1840 | break; | |
1841 | ||
1842 | case DMA_WRITE_ABORT: | |
1843 | printk(KERN_INFO "%s: DMA write operation aborted: \n", | |
1844 | dev->name); | |
1845 | switch (AdapterCheckBlock[1]) | |
1846 | { | |
1847 | case 0: | |
1848 | printk(KERN_INFO "Timeout\n"); | |
1849 | printk(KERN_INFO "Address: %04X %04X\n", | |
1850 | AdapterCheckBlock[2], | |
1851 | AdapterCheckBlock[3]); | |
1852 | break; | |
1853 | ||
1854 | case 1: | |
1855 | printk(KERN_INFO "Parity error\n"); | |
1856 | printk(KERN_INFO "Address: %04X %04X\n", | |
1857 | AdapterCheckBlock[2], | |
1858 | AdapterCheckBlock[3]); | |
1859 | break; | |
1860 | ||
1861 | case 2: | |
1862 | printk(KERN_INFO "Bus error\n"); | |
1863 | printk(KERN_INFO "Address: %04X %04X\n", | |
1864 | AdapterCheckBlock[2], | |
1865 | AdapterCheckBlock[3]); | |
1866 | break; | |
1867 | ||
1868 | default: | |
1869 | printk(KERN_INFO "Unknown error.\n"); | |
1870 | break; | |
1871 | } | |
1872 | break; | |
1873 | ||
1874 | case ILLEGAL_OP_CODE: | |
1875 | printk(KERN_INFO "%s: Illegal operation code in firmware\n", | |
1876 | dev->name); | |
1877 | /* Parm[0-3]: adapter internal register R13-R15 */ | |
1878 | break; | |
1879 | ||
1880 | case PARITY_ERRORS: | |
1881 | printk(KERN_INFO "%s: Adapter internal bus parity error\n", | |
1882 | dev->name); | |
1883 | /* Parm[0-3]: adapter internal register R13-R15 */ | |
1884 | break; | |
1885 | ||
1886 | case RAM_DATA_ERROR: | |
1887 | printk(KERN_INFO "%s: RAM data error\n", dev->name); | |
1888 | /* Parm[0-1]: MSW/LSW address of RAM location. */ | |
1889 | break; | |
1890 | ||
1891 | case RAM_PARITY_ERROR: | |
1892 | printk(KERN_INFO "%s: RAM parity error\n", dev->name); | |
1893 | /* Parm[0-1]: MSW/LSW address of RAM location. */ | |
1894 | break; | |
1895 | ||
1896 | case RING_UNDERRUN: | |
1897 | printk(KERN_INFO "%s: Internal DMA underrun detected\n", | |
1898 | dev->name); | |
1899 | break; | |
1900 | ||
1901 | case INVALID_IRQ: | |
1902 | printk(KERN_INFO "%s: Unrecognized interrupt detected\n", | |
1903 | dev->name); | |
1904 | /* Parm[0-3]: adapter internal register R13-R15 */ | |
1905 | break; | |
1906 | ||
1907 | case INVALID_ERROR_IRQ: | |
1908 | printk(KERN_INFO "%s: Unrecognized error interrupt detected\n", | |
1909 | dev->name); | |
1910 | /* Parm[0-3]: adapter internal register R13-R15 */ | |
1911 | break; | |
1912 | ||
1913 | case INVALID_XOP: | |
1914 | printk(KERN_INFO "%s: Unrecognized XOP request detected\n", | |
1915 | dev->name); | |
1916 | /* Parm[0-3]: adapter internal register R13-R15 */ | |
1917 | break; | |
1918 | ||
1919 | default: | |
1920 | printk(KERN_INFO "%s: Unknown status", dev->name); | |
1921 | break; | |
1922 | } | |
1923 | ||
1924 | if(tms380tr_chipset_init(dev) == 1) | |
1925 | { | |
1926 | /* Restart of firmware successful */ | |
1927 | tp->AdapterOpenFlag = 1; | |
1928 | } | |
1929 | ||
1930 | return; | |
1931 | } | |
1932 | ||
1933 | /* | |
1934 | * Internal adapter pointer to RAM data are copied from adapter into | |
1935 | * host system. | |
1936 | */ | |
1937 | static int tms380tr_read_ptr(struct net_device *dev) | |
1938 | { | |
1939 | struct net_local *tp = netdev_priv(dev); | |
1940 | unsigned short adapterram; | |
1941 | ||
1942 | tms380tr_read_ram(dev, (unsigned char *)&tp->intptrs.BurnedInAddrPtr, | |
1943 | ADAPTER_INT_PTRS, 16); | |
1944 | tms380tr_read_ram(dev, (unsigned char *)&adapterram, | |
1945 | cpu_to_be16((unsigned short)tp->intptrs.AdapterRAMPtr), 2); | |
1946 | return be16_to_cpu(adapterram); | |
1947 | } | |
1948 | ||
1949 | /* | |
1950 | * Reads a number of bytes from adapter to system memory. | |
1951 | */ | |
1952 | static void tms380tr_read_ram(struct net_device *dev, unsigned char *Data, | |
1953 | unsigned short Address, int Length) | |
1954 | { | |
1955 | int i; | |
1956 | unsigned short old_sifadx, old_sifadr, InWord; | |
1957 | ||
1958 | /* Save the current values */ | |
1959 | old_sifadx = SIFREADW(SIFADX); | |
1960 | old_sifadr = SIFREADW(SIFADR); | |
1961 | ||
1962 | /* Page number of adapter memory */ | |
1963 | SIFWRITEW(0x0001, SIFADX); | |
1964 | /* Address offset in adapter RAM */ | |
1965 | SIFWRITEW(Address, SIFADR); | |
1966 | ||
1967 | /* Copy len byte from adapter memory to system data area. */ | |
1968 | i = 0; | |
1969 | for(;;) | |
1970 | { | |
1971 | InWord = SIFREADW(SIFINC); | |
1972 | ||
1973 | *(Data + i) = HIBYTE(InWord); /* Write first byte */ | |
1974 | if(++i == Length) /* All is done break */ | |
1975 | break; | |
1976 | ||
1977 | *(Data + i) = LOBYTE(InWord); /* Write second byte */ | |
1978 | if (++i == Length) /* All is done break */ | |
1979 | break; | |
1980 | } | |
1981 | ||
1982 | /* Restore original values */ | |
1983 | SIFWRITEW(old_sifadx, SIFADX); | |
1984 | SIFWRITEW(old_sifadr, SIFADR); | |
1985 | ||
1986 | return; | |
1987 | } | |
1988 | ||
1989 | /* | |
1990 | * Cancel all queued packets in the transmission queue. | |
1991 | */ | |
1992 | static void tms380tr_cancel_tx_queue(struct net_local* tp) | |
1993 | { | |
1994 | TPL *tpl; | |
1995 | ||
1996 | /* | |
1997 | * NOTE: There must not be an active TRANSMIT command pending, when | |
1998 | * this function is called. | |
1999 | */ | |
2000 | if(tp->TransmitCommandActive) | |
2001 | return; | |
2002 | ||
2003 | for(;;) | |
2004 | { | |
2005 | tpl = tp->TplBusy; | |
2006 | if(!tpl->BusyFlag) | |
2007 | break; | |
2008 | /* "Remove" TPL from busy list. */ | |
2009 | tp->TplBusy = tpl->NextTPLPtr; | |
2010 | tms380tr_write_tpl_status(tpl, 0); /* Clear VALID bit */ | |
2011 | tpl->BusyFlag = 0; /* "free" TPL */ | |
2012 | ||
2013 | printk(KERN_INFO "Cancel tx (%08lXh).\n", (unsigned long)tpl); | |
2014 | if (tpl->DMABuff) | |
504ff16c | 2015 | dma_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, DMA_TO_DEVICE); |
1da177e4 LT |
2016 | dev_kfree_skb_any(tpl->Skb); |
2017 | } | |
2018 | ||
2019 | return; | |
2020 | } | |
2021 | ||
2022 | /* | |
2023 | * This function is called whenever a transmit interrupt is generated by the | |
2024 | * adapter. For a command complete interrupt, it is checked if we have to | |
2025 | * issue a new transmit command or not. | |
2026 | */ | |
2027 | static void tms380tr_tx_status_irq(struct net_device *dev) | |
2028 | { | |
2029 | struct net_local *tp = netdev_priv(dev); | |
2030 | unsigned char HighByte, HighAc, LowAc; | |
2031 | TPL *tpl; | |
2032 | ||
2033 | /* NOTE: At this point the SSB from TRANSMIT STATUS is no longer | |
2034 | * available, because the CLEAR SSB command has already been issued. | |
2035 | * | |
2036 | * Process all complete transmissions. | |
2037 | */ | |
2038 | ||
2039 | for(;;) | |
2040 | { | |
2041 | tpl = tp->TplBusy; | |
2042 | if(!tpl->BusyFlag || (tpl->Status | |
2043 | & (TX_VALID | TX_FRAME_COMPLETE)) | |
2044 | != TX_FRAME_COMPLETE) | |
2045 | { | |
2046 | break; | |
2047 | } | |
2048 | ||
2049 | /* "Remove" TPL from busy list. */ | |
2050 | tp->TplBusy = tpl->NextTPLPtr ; | |
2051 | ||
2052 | /* Check the transmit status field only for directed frames*/ | |
2053 | if(DIRECTED_FRAME(tpl) && (tpl->Status & TX_ERROR) == 0) | |
2054 | { | |
2055 | HighByte = GET_TRANSMIT_STATUS_HIGH_BYTE(tpl->Status); | |
2056 | HighAc = GET_FRAME_STATUS_HIGH_AC(HighByte); | |
2057 | LowAc = GET_FRAME_STATUS_LOW_AC(HighByte); | |
2058 | ||
2059 | if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED)) | |
2060 | { | |
2061 | printk(KERN_DEBUG "%s: (DA=%08lX not recognized)\n", | |
2062 | dev->name, | |
2063 | *(unsigned long *)&tpl->MData[2+2]); | |
2064 | } | |
2065 | else | |
2066 | { | |
2067 | if(tms380tr_debug > 3) | |
2068 | printk(KERN_DEBUG "%s: Directed frame tx'd\n", | |
2069 | dev->name); | |
2070 | } | |
2071 | } | |
2072 | else | |
2073 | { | |
2074 | if(!DIRECTED_FRAME(tpl)) | |
2075 | { | |
2076 | if(tms380tr_debug > 3) | |
2077 | printk(KERN_DEBUG "%s: Broadcast frame tx'd\n", | |
2078 | dev->name); | |
2079 | } | |
2080 | } | |
2081 | ||
2082 | tp->MacStat.tx_packets++; | |
2083 | if (tpl->DMABuff) | |
504ff16c | 2084 | dma_unmap_single(tp->pdev, tpl->DMABuff, tpl->Skb->len, DMA_TO_DEVICE); |
1da177e4 LT |
2085 | dev_kfree_skb_irq(tpl->Skb); |
2086 | tpl->BusyFlag = 0; /* "free" TPL */ | |
2087 | } | |
2088 | ||
2089 | if(!tp->TplFree->NextTPLPtr->BusyFlag) | |
2090 | netif_wake_queue(dev); | |
2091 | return; | |
2092 | } | |
2093 | ||
2094 | /* | |
2095 | * Called if a frame receive interrupt is generated by the adapter. | |
2096 | * Check if the frame is valid and indicate it to system. | |
2097 | */ | |
2098 | static void tms380tr_rcv_status_irq(struct net_device *dev) | |
2099 | { | |
2100 | struct net_local *tp = netdev_priv(dev); | |
2101 | unsigned char *ReceiveDataPtr; | |
2102 | struct sk_buff *skb; | |
2103 | unsigned int Length, Length2; | |
2104 | RPL *rpl; | |
2105 | RPL *SaveHead; | |
2106 | dma_addr_t dmabuf; | |
2107 | ||
2108 | /* NOTE: At this point the SSB from RECEIVE STATUS is no longer | |
2109 | * available, because the CLEAR SSB command has already been issued. | |
2110 | * | |
2111 | * Process all complete receives. | |
2112 | */ | |
2113 | ||
2114 | for(;;) | |
2115 | { | |
2116 | rpl = tp->RplHead; | |
2117 | if(rpl->Status & RX_VALID) | |
2118 | break; /* RPL still in use by adapter */ | |
2119 | ||
2120 | /* Forward RPLHead pointer to next list. */ | |
2121 | SaveHead = tp->RplHead; | |
2122 | tp->RplHead = rpl->NextRPLPtr; | |
2123 | ||
2124 | /* Get the frame size (Byte swap for Intel). | |
2125 | * Do this early (see workaround comment below) | |
2126 | */ | |
2127 | Length = be16_to_cpu((unsigned short)rpl->FrameSize); | |
2128 | ||
2129 | /* Check if the Frame_Start, Frame_End and | |
2130 | * Frame_Complete bits are set. | |
2131 | */ | |
2132 | if((rpl->Status & VALID_SINGLE_BUFFER_FRAME) | |
2133 | == VALID_SINGLE_BUFFER_FRAME) | |
2134 | { | |
2135 | ReceiveDataPtr = rpl->MData; | |
2136 | ||
2137 | /* Workaround for delayed write of FrameSize on ISA | |
2138 | * (FrameSize is false but valid-bit is reset) | |
2139 | * Frame size is set to zero when the RPL is freed. | |
2140 | * Length2 is there because there have also been | |
2141 | * cases where the FrameSize was partially written | |
2142 | */ | |
2143 | Length2 = be16_to_cpu((unsigned short)rpl->FrameSize); | |
2144 | ||
2145 | if(Length == 0 || Length != Length2) | |
2146 | { | |
2147 | tp->RplHead = SaveHead; | |
2148 | break; /* Return to tms380tr_interrupt */ | |
2149 | } | |
2150 | tms380tr_update_rcv_stats(tp,ReceiveDataPtr,Length); | |
2151 | ||
2152 | if(tms380tr_debug > 3) | |
2153 | printk(KERN_DEBUG "%s: Packet Length %04X (%d)\n", | |
2154 | dev->name, Length, Length); | |
2155 | ||
2156 | /* Indicate the received frame to system the | |
2157 | * adapter does the Source-Routing padding for | |
2158 | * us. See: OpenOptions in tms380tr_init_opb() | |
2159 | */ | |
2160 | skb = rpl->Skb; | |
2161 | if(rpl->SkbStat == SKB_UNAVAILABLE) | |
2162 | { | |
2163 | /* Try again to allocate skb */ | |
2164 | skb = dev_alloc_skb(tp->MaxPacketSize); | |
2165 | if(skb == NULL) | |
2166 | { | |
2167 | /* Update Stats ?? */ | |
2168 | } | |
2169 | else | |
2170 | { | |
2171 | skb->dev = dev; | |
2172 | skb_put(skb, tp->MaxPacketSize); | |
2173 | rpl->SkbStat = SKB_DATA_COPY; | |
2174 | ReceiveDataPtr = rpl->MData; | |
2175 | } | |
2176 | } | |
2177 | ||
2178 | if(skb && (rpl->SkbStat == SKB_DATA_COPY | |
2179 | || rpl->SkbStat == SKB_DMA_DIRECT)) | |
2180 | { | |
2181 | if(rpl->SkbStat == SKB_DATA_COPY) | |
2182 | memcpy(skb->data, ReceiveDataPtr, Length); | |
2183 | ||
2184 | /* Deliver frame to system */ | |
2185 | rpl->Skb = NULL; | |
2186 | skb_trim(skb,Length); | |
2187 | skb->protocol = tr_type_trans(skb,dev); | |
2188 | netif_rx(skb); | |
2189 | dev->last_rx = jiffies; | |
2190 | } | |
2191 | } | |
2192 | else /* Invalid frame */ | |
2193 | { | |
2194 | if(rpl->Skb != NULL) | |
2195 | dev_kfree_skb_irq(rpl->Skb); | |
2196 | ||
2197 | /* Skip list. */ | |
2198 | if(rpl->Status & RX_START_FRAME) | |
2199 | /* Frame start bit is set -> overflow. */ | |
2200 | tp->MacStat.rx_errors++; | |
2201 | } | |
2202 | if (rpl->DMABuff) | |
504ff16c | 2203 | dma_unmap_single(tp->pdev, rpl->DMABuff, tp->MaxPacketSize, DMA_TO_DEVICE); |
1da177e4 LT |
2204 | rpl->DMABuff = 0; |
2205 | ||
2206 | /* Allocate new skb for rpl */ | |
2207 | rpl->Skb = dev_alloc_skb(tp->MaxPacketSize); | |
2208 | /* skb == NULL ? then use local buffer */ | |
2209 | if(rpl->Skb == NULL) | |
2210 | { | |
2211 | rpl->SkbStat = SKB_UNAVAILABLE; | |
2212 | rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer); | |
2213 | rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex]; | |
2214 | } | |
2215 | else /* skb != NULL */ | |
2216 | { | |
2217 | rpl->Skb->dev = dev; | |
2218 | skb_put(rpl->Skb, tp->MaxPacketSize); | |
2219 | ||
2220 | /* Data unreachable for DMA ? then use local buffer */ | |
504ff16c | 2221 | dmabuf = dma_map_single(tp->pdev, rpl->Skb->data, tp->MaxPacketSize, DMA_FROM_DEVICE); |
1da177e4 LT |
2222 | if(tp->dmalimit && (dmabuf + tp->MaxPacketSize > tp->dmalimit)) |
2223 | { | |
2224 | rpl->SkbStat = SKB_DATA_COPY; | |
2225 | rpl->FragList[0].DataAddr = htonl(((char *)tp->LocalRxBuffers[rpl->RPLIndex] - (char *)tp) + tp->dmabuffer); | |
2226 | rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex]; | |
2227 | } | |
2228 | else | |
2229 | { | |
2230 | /* DMA directly in skb->data */ | |
2231 | rpl->SkbStat = SKB_DMA_DIRECT; | |
2232 | rpl->FragList[0].DataAddr = htonl(dmabuf); | |
2233 | rpl->MData = rpl->Skb->data; | |
2234 | rpl->DMABuff = dmabuf; | |
2235 | } | |
2236 | } | |
2237 | ||
2238 | rpl->FragList[0].DataCount = cpu_to_be16((unsigned short)tp->MaxPacketSize); | |
2239 | rpl->FrameSize = 0; | |
2240 | ||
2241 | /* Pass the last RPL back to the adapter */ | |
2242 | tp->RplTail->FrameSize = 0; | |
2243 | ||
2244 | /* Reset the CSTAT field in the list. */ | |
2245 | tms380tr_write_rpl_status(tp->RplTail, RX_VALID | RX_FRAME_IRQ); | |
2246 | ||
2247 | /* Current RPL becomes last one in list. */ | |
2248 | tp->RplTail = tp->RplTail->NextRPLPtr; | |
2249 | ||
2250 | /* Inform adapter about RPL valid. */ | |
2251 | tms380tr_exec_sifcmd(dev, CMD_RX_VALID); | |
2252 | } | |
2253 | ||
2254 | return; | |
2255 | } | |
2256 | ||
2257 | /* | |
2258 | * This function should be used whenever the status of any RPL must be | |
2259 | * modified by the driver, because the compiler may otherwise change the | |
2260 | * order of instructions such that writing the RPL status may be executed | |
2261 | * at an undesireable time. When this function is used, the status is | |
2262 | * always written when the function is called. | |
2263 | */ | |
2264 | static void tms380tr_write_rpl_status(RPL *rpl, unsigned int Status) | |
2265 | { | |
2266 | rpl->Status = Status; | |
2267 | ||
2268 | return; | |
2269 | } | |
2270 | ||
2271 | /* | |
2272 | * The function updates the statistic counters in mac->MacStat. | |
2273 | * It differtiates between directed and broadcast/multicast ( ==functional) | |
2274 | * frames. | |
2275 | */ | |
2276 | static void tms380tr_update_rcv_stats(struct net_local *tp, unsigned char DataPtr[], | |
2277 | unsigned int Length) | |
2278 | { | |
2279 | tp->MacStat.rx_packets++; | |
2280 | tp->MacStat.rx_bytes += Length; | |
2281 | ||
2282 | /* Test functional bit */ | |
2283 | if(DataPtr[2] & GROUP_BIT) | |
2284 | tp->MacStat.multicast++; | |
2285 | ||
2286 | return; | |
2287 | } | |
2288 | ||
2289 | static int tms380tr_set_mac_address(struct net_device *dev, void *addr) | |
2290 | { | |
2291 | struct net_local *tp = netdev_priv(dev); | |
2292 | struct sockaddr *saddr = addr; | |
2293 | ||
2294 | if (tp->AdapterOpenFlag || tp->AdapterVirtOpenFlag) { | |
2295 | printk(KERN_WARNING "%s: Cannot set MAC/LAA address while card is open\n", dev->name); | |
2296 | return -EIO; | |
2297 | } | |
2298 | memcpy(dev->dev_addr, saddr->sa_data, dev->addr_len); | |
2299 | return 0; | |
2300 | } | |
2301 | ||
2302 | #if TMS380TR_DEBUG > 0 | |
2303 | /* | |
2304 | * Dump Packet (data) | |
2305 | */ | |
2306 | static void tms380tr_dump(unsigned char *Data, int length) | |
2307 | { | |
2308 | int i, j; | |
2309 | ||
2310 | for (i = 0, j = 0; i < length / 8; i++, j += 8) | |
2311 | { | |
2312 | printk(KERN_DEBUG "%02x %02x %02x %02x %02x %02x %02x %02x\n", | |
2313 | Data[j+0],Data[j+1],Data[j+2],Data[j+3], | |
2314 | Data[j+4],Data[j+5],Data[j+6],Data[j+7]); | |
2315 | } | |
2316 | ||
2317 | return; | |
2318 | } | |
2319 | #endif | |
2320 | ||
2321 | void tmsdev_term(struct net_device *dev) | |
2322 | { | |
2323 | struct net_local *tp; | |
2324 | ||
2325 | tp = netdev_priv(dev); | |
504ff16c JF |
2326 | dma_unmap_single(tp->pdev, tp->dmabuffer, sizeof(struct net_local), |
2327 | DMA_BIDIRECTIONAL); | |
1da177e4 LT |
2328 | } |
2329 | ||
84c3ea01 | 2330 | int tmsdev_init(struct net_device *dev, struct device *pdev) |
1da177e4 LT |
2331 | { |
2332 | struct net_local *tms_local; | |
2333 | ||
2334 | memset(dev->priv, 0, sizeof(struct net_local)); | |
2335 | tms_local = netdev_priv(dev); | |
2336 | init_waitqueue_head(&tms_local->wait_for_tok_int); | |
84c3ea01 JF |
2337 | if (pdev->dma_mask) |
2338 | tms_local->dmalimit = *pdev->dma_mask; | |
2339 | else | |
2340 | return -ENOMEM; | |
1da177e4 | 2341 | tms_local->pdev = pdev; |
504ff16c JF |
2342 | tms_local->dmabuffer = dma_map_single(pdev, (void *)tms_local, |
2343 | sizeof(struct net_local), DMA_BIDIRECTIONAL); | |
84c3ea01 JF |
2344 | if (tms_local->dmabuffer + sizeof(struct net_local) > |
2345 | tms_local->dmalimit) | |
1da177e4 LT |
2346 | { |
2347 | printk(KERN_INFO "%s: Memory not accessible for DMA\n", | |
2348 | dev->name); | |
2349 | tmsdev_term(dev); | |
2350 | return -ENOMEM; | |
2351 | } | |
2352 | ||
2353 | /* These can be overridden by the card driver if needed */ | |
2354 | dev->open = tms380tr_open; | |
2355 | dev->stop = tms380tr_close; | |
2356 | dev->do_ioctl = NULL; | |
2357 | dev->hard_start_xmit = tms380tr_send_packet; | |
2358 | dev->tx_timeout = tms380tr_timeout; | |
2359 | dev->watchdog_timeo = HZ; | |
2360 | dev->get_stats = tms380tr_get_stats; | |
2361 | dev->set_multicast_list = &tms380tr_set_multicast_list; | |
2362 | dev->set_mac_address = tms380tr_set_mac_address; | |
2363 | ||
2364 | return 0; | |
2365 | } | |
2366 | ||
1da177e4 LT |
2367 | EXPORT_SYMBOL(tms380tr_open); |
2368 | EXPORT_SYMBOL(tms380tr_close); | |
2369 | EXPORT_SYMBOL(tms380tr_interrupt); | |
2370 | EXPORT_SYMBOL(tmsdev_init); | |
2371 | EXPORT_SYMBOL(tmsdev_term); | |
2372 | EXPORT_SYMBOL(tms380tr_wait); | |
2373 | ||
504ff16c JF |
2374 | #ifdef MODULE |
2375 | ||
de70b4c8 | 2376 | static struct module *TMS380_module = NULL; |
1da177e4 LT |
2377 | |
2378 | int init_module(void) | |
2379 | { | |
2380 | printk(KERN_DEBUG "%s", version); | |
2381 | ||
2382 | TMS380_module = &__this_module; | |
2383 | return 0; | |
2384 | } | |
2385 | ||
2386 | void cleanup_module(void) | |
2387 | { | |
2388 | TMS380_module = NULL; | |
2389 | } | |
2390 | #endif | |
2391 | ||
2392 | MODULE_LICENSE("GPL"); | |
2393 |