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nfsd4: translate memory errors to delay, not serverfault
[linux-2.6/libata-dev.git] / drivers / atm / he.c
blob56c2e99e458fd7ea85e25f4ee3d5b7e0ed9aa261
1 /*
2
3 he.c
4
5 ForeRunnerHE ATM Adapter driver for ATM on Linux
6 Copyright (C) 1999-2001 Naval Research Laboratory
7
8 This library is free software; you can redistribute it and/or
9 modify it under the terms of the GNU Lesser General Public
10 License as published by the Free Software Foundation; either
11 version 2.1 of the License, or (at your option) any later version.
12
13 This library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser General Public
19 License along with this library; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21
22 */
23
24 /*
25
26 he.c
27
28 ForeRunnerHE ATM Adapter driver for ATM on Linux
29 Copyright (C) 1999-2001 Naval Research Laboratory
30
31 Permission to use, copy, modify and distribute this software and its
32 documentation is hereby granted, provided that both the copyright
33 notice and this permission notice appear in all copies of the software,
34 derivative works or modified versions, and any portions thereof, and
35 that both notices appear in supporting documentation.
36
37 NRL ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION AND
38 DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER
39 RESULTING FROM THE USE OF THIS SOFTWARE.
40
41 This driver was written using the "Programmer's Reference Manual for
42 ForeRunnerHE(tm)", MANU0361-01 - Rev. A, 08/21/98.
43
44 AUTHORS:
45 chas williams <chas@cmf.nrl.navy.mil>
46 eric kinzie <ekinzie@cmf.nrl.navy.mil>
47
48 NOTES:
49 4096 supported 'connections'
50 group 0 is used for all traffic
51 interrupt queue 0 is used for all interrupts
52 aal0 support (based on work from ulrich.u.muller@nokia.com)
53
54 */
55
56 #include <linux/module.h>
57 #include <linux/kernel.h>
58 #include <linux/skbuff.h>
59 #include <linux/pci.h>
60 #include <linux/errno.h>
61 #include <linux/types.h>
62 #include <linux/string.h>
63 #include <linux/delay.h>
64 #include <linux/init.h>
65 #include <linux/mm.h>
66 #include <linux/sched.h>
67 #include <linux/timer.h>
68 #include <linux/interrupt.h>
69 #include <linux/dma-mapping.h>
70 #include <linux/slab.h>
71 #include <asm/io.h>
72 #include <asm/byteorder.h>
73 #include <asm/uaccess.h>
74
75 #include <linux/atmdev.h>
76 #include <linux/atm.h>
77 #include <linux/sonet.h>
78
79 #undef USE_SCATTERGATHER
80 #undef USE_CHECKSUM_HW /* still confused about this */
81 /* #undef HE_DEBUG */
82
83 #include "he.h"
84 #include "suni.h"
85 #include <linux/atm_he.h>
86
87 #define hprintk(fmt,args...) printk(KERN_ERR DEV_LABEL "%d: " fmt, he_dev->number , ##args)
88
89 #ifdef HE_DEBUG
90 #define HPRINTK(fmt,args...) printk(KERN_DEBUG DEV_LABEL "%d: " fmt, he_dev->number , ##args)
91 #else /* !HE_DEBUG */
92 #define HPRINTK(fmt,args...) do { } while (0)
93 #endif /* HE_DEBUG */
94
95 /* declarations */
96
97 static int he_open(struct atm_vcc *vcc);
98 static void he_close(struct atm_vcc *vcc);
99 static int he_send(struct atm_vcc *vcc, struct sk_buff *skb);
100 static int he_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg);
101 static irqreturn_t he_irq_handler(int irq, void *dev_id);
102 static void he_tasklet(unsigned long data);
103 static int he_proc_read(struct atm_dev *dev,loff_t *pos,char *page);
104 static int he_start(struct atm_dev *dev);
105 static void he_stop(struct he_dev *dev);
106 static void he_phy_put(struct atm_dev *, unsigned char, unsigned long);
107 static unsigned char he_phy_get(struct atm_dev *, unsigned long);
108
109 static u8 read_prom_byte(struct he_dev *he_dev, int addr);
110
111 /* globals */
112
113 static struct he_dev *he_devs;
114 static int disable64;
115 static short nvpibits = -1;
116 static short nvcibits = -1;
117 static short rx_skb_reserve = 16;
118 static int irq_coalesce = 1;
119 static int sdh = 0;
120
121 /* Read from EEPROM = 0000 0011b */
122 static unsigned int readtab[] = {
123 CS_HIGH | CLK_HIGH,
124 CS_LOW | CLK_LOW,
125 CLK_HIGH, /* 0 */
126 CLK_LOW,
127 CLK_HIGH, /* 0 */
128 CLK_LOW,
129 CLK_HIGH, /* 0 */
130 CLK_LOW,
131 CLK_HIGH, /* 0 */
132 CLK_LOW,
133 CLK_HIGH, /* 0 */
134 CLK_LOW,
135 CLK_HIGH, /* 0 */
136 CLK_LOW | SI_HIGH,
137 CLK_HIGH | SI_HIGH, /* 1 */
138 CLK_LOW | SI_HIGH,
139 CLK_HIGH | SI_HIGH /* 1 */
140 };
141
142 /* Clock to read from/write to the EEPROM */
143 static unsigned int clocktab[] = {
144 CLK_LOW,
145 CLK_HIGH,
146 CLK_LOW,
147 CLK_HIGH,
148 CLK_LOW,
149 CLK_HIGH,
150 CLK_LOW,
151 CLK_HIGH,
152 CLK_LOW,
153 CLK_HIGH,
154 CLK_LOW,
155 CLK_HIGH,
156 CLK_LOW,
157 CLK_HIGH,
158 CLK_LOW,
159 CLK_HIGH,
160 CLK_LOW
161 };
162
163 static struct atmdev_ops he_ops =
164 {
165 .open = he_open,
166 .close = he_close,
167 .ioctl = he_ioctl,
168 .send = he_send,
169 .phy_put = he_phy_put,
170 .phy_get = he_phy_get,
171 .proc_read = he_proc_read,
172 .owner = THIS_MODULE
173 };
174
175 #define he_writel(dev, val, reg) do { writel(val, (dev)->membase + (reg)); wmb(); } while (0)
176 #define he_readl(dev, reg) readl((dev)->membase + (reg))
177
178 /* section 2.12 connection memory access */
179
180 static __inline__ void
181 he_writel_internal(struct he_dev *he_dev, unsigned val, unsigned addr,
182 unsigned flags)
183 {
184 he_writel(he_dev, val, CON_DAT);
185 (void) he_readl(he_dev, CON_DAT); /* flush posted writes */
186 he_writel(he_dev, flags | CON_CTL_WRITE | CON_CTL_ADDR(addr), CON_CTL);
187 while (he_readl(he_dev, CON_CTL) & CON_CTL_BUSY);
188 }
189
190 #define he_writel_rcm(dev, val, reg) \
191 he_writel_internal(dev, val, reg, CON_CTL_RCM)
192
193 #define he_writel_tcm(dev, val, reg) \
194 he_writel_internal(dev, val, reg, CON_CTL_TCM)
195
196 #define he_writel_mbox(dev, val, reg) \
197 he_writel_internal(dev, val, reg, CON_CTL_MBOX)
198
199 static unsigned
200 he_readl_internal(struct he_dev *he_dev, unsigned addr, unsigned flags)
201 {
202 he_writel(he_dev, flags | CON_CTL_READ | CON_CTL_ADDR(addr), CON_CTL);
203 while (he_readl(he_dev, CON_CTL) & CON_CTL_BUSY);
204 return he_readl(he_dev, CON_DAT);
205 }
206
207 #define he_readl_rcm(dev, reg) \
208 he_readl_internal(dev, reg, CON_CTL_RCM)
209
210 #define he_readl_tcm(dev, reg) \
211 he_readl_internal(dev, reg, CON_CTL_TCM)
212
213 #define he_readl_mbox(dev, reg) \
214 he_readl_internal(dev, reg, CON_CTL_MBOX)
215
216
217 /* figure 2.2 connection id */
218
219 #define he_mkcid(dev, vpi, vci) (((vpi << (dev)->vcibits) | vci) & 0x1fff)
220
221 /* 2.5.1 per connection transmit state registers */
222
223 #define he_writel_tsr0(dev, val, cid) \
224 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 0)
225 #define he_readl_tsr0(dev, cid) \
226 he_readl_tcm(dev, CONFIG_TSRA | (cid << 3) | 0)
227
228 #define he_writel_tsr1(dev, val, cid) \
229 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 1)
230
231 #define he_writel_tsr2(dev, val, cid) \
232 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 2)
233
234 #define he_writel_tsr3(dev, val, cid) \
235 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 3)
236
237 #define he_writel_tsr4(dev, val, cid) \
238 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 4)
239
240 /* from page 2-20
241 *
242 * NOTE While the transmit connection is active, bits 23 through 0
243 * of this register must not be written by the host. Byte
244 * enables should be used during normal operation when writing
245 * the most significant byte.
246 */
247
248 #define he_writel_tsr4_upper(dev, val, cid) \
249 he_writel_internal(dev, val, CONFIG_TSRA | (cid << 3) | 4, \
250 CON_CTL_TCM \
251 | CON_BYTE_DISABLE_2 \
252 | CON_BYTE_DISABLE_1 \
253 | CON_BYTE_DISABLE_0)
254
255 #define he_readl_tsr4(dev, cid) \
256 he_readl_tcm(dev, CONFIG_TSRA | (cid << 3) | 4)
257
258 #define he_writel_tsr5(dev, val, cid) \
259 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 5)
260
261 #define he_writel_tsr6(dev, val, cid) \
262 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 6)
263
264 #define he_writel_tsr7(dev, val, cid) \
265 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 7)
266
267
268 #define he_writel_tsr8(dev, val, cid) \
269 he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 0)
270
271 #define he_writel_tsr9(dev, val, cid) \
272 he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 1)
273
274 #define he_writel_tsr10(dev, val, cid) \
275 he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 2)
276
277 #define he_writel_tsr11(dev, val, cid) \
278 he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 3)
279
280
281 #define he_writel_tsr12(dev, val, cid) \
282 he_writel_tcm(dev, val, CONFIG_TSRC | (cid << 1) | 0)
283
284 #define he_writel_tsr13(dev, val, cid) \
285 he_writel_tcm(dev, val, CONFIG_TSRC | (cid << 1) | 1)
286
287
288 #define he_writel_tsr14(dev, val, cid) \
289 he_writel_tcm(dev, val, CONFIG_TSRD | cid)
290
291 #define he_writel_tsr14_upper(dev, val, cid) \
292 he_writel_internal(dev, val, CONFIG_TSRD | cid, \
293 CON_CTL_TCM \
294 | CON_BYTE_DISABLE_2 \
295 | CON_BYTE_DISABLE_1 \
296 | CON_BYTE_DISABLE_0)
297
298 /* 2.7.1 per connection receive state registers */
299
300 #define he_writel_rsr0(dev, val, cid) \
301 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 0)
302 #define he_readl_rsr0(dev, cid) \
303 he_readl_rcm(dev, 0x00000 | (cid << 3) | 0)
304
305 #define he_writel_rsr1(dev, val, cid) \
306 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 1)
307
308 #define he_writel_rsr2(dev, val, cid) \
309 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 2)
310
311 #define he_writel_rsr3(dev, val, cid) \
312 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 3)
313
314 #define he_writel_rsr4(dev, val, cid) \
315 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 4)
316
317 #define he_writel_rsr5(dev, val, cid) \
318 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 5)
319
320 #define he_writel_rsr6(dev, val, cid) \
321 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 6)
322
323 #define he_writel_rsr7(dev, val, cid) \
324 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 7)
325
326 static __inline__ struct atm_vcc*
327 __find_vcc(struct he_dev *he_dev, unsigned cid)
328 {
329 struct hlist_head *head;
330 struct atm_vcc *vcc;
331 struct hlist_node *node;
332 struct sock *s;
333 short vpi;
334 int vci;
335
336 vpi = cid >> he_dev->vcibits;
337 vci = cid & ((1 << he_dev->vcibits) - 1);
338 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
339
340 sk_for_each(s, node, head) {
341 vcc = atm_sk(s);
342 if (vcc->dev == he_dev->atm_dev &&
343 vcc->vci == vci && vcc->vpi == vpi &&
344 vcc->qos.rxtp.traffic_class != ATM_NONE) {
345 return vcc;
346 }
347 }
348 return NULL;
349 }
350
351 static int __devinit
352 he_init_one(struct pci_dev *pci_dev, const struct pci_device_id *pci_ent)
353 {
354 struct atm_dev *atm_dev = NULL;
355 struct he_dev *he_dev = NULL;
356 int err = 0;
357
358 printk(KERN_INFO "ATM he driver\n");
359
360 if (pci_enable_device(pci_dev))
361 return -EIO;
362 if (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32)) != 0) {
363 printk(KERN_WARNING "he: no suitable dma available\n");
364 err = -EIO;
365 goto init_one_failure;
366 }
367
368 atm_dev = atm_dev_register(DEV_LABEL, &he_ops, -1, NULL);
369 if (!atm_dev) {
370 err = -ENODEV;
371 goto init_one_failure;
372 }
373 pci_set_drvdata(pci_dev, atm_dev);
374
375 he_dev = kzalloc(sizeof(struct he_dev),
376 GFP_KERNEL);
377 if (!he_dev) {
378 err = -ENOMEM;
379 goto init_one_failure;
380 }
381 he_dev->pci_dev = pci_dev;
382 he_dev->atm_dev = atm_dev;
383 he_dev->atm_dev->dev_data = he_dev;
384 atm_dev->dev_data = he_dev;
385 he_dev->number = atm_dev->number;
386 tasklet_init(&he_dev->tasklet, he_tasklet, (unsigned long) he_dev);
387 spin_lock_init(&he_dev->global_lock);
388
389 if (he_start(atm_dev)) {
390 he_stop(he_dev);
391 err = -ENODEV;
392 goto init_one_failure;
393 }
394 he_dev->next = NULL;
395 if (he_devs)
396 he_dev->next = he_devs;
397 he_devs = he_dev;
398 return 0;
399
400 init_one_failure:
401 if (atm_dev)
402 atm_dev_deregister(atm_dev);
403 kfree(he_dev);
404 pci_disable_device(pci_dev);
405 return err;
406 }
407
408 static void __devexit
409 he_remove_one (struct pci_dev *pci_dev)
410 {
411 struct atm_dev *atm_dev;
412 struct he_dev *he_dev;
413
414 atm_dev = pci_get_drvdata(pci_dev);
415 he_dev = HE_DEV(atm_dev);
416
417 /* need to remove from he_devs */
418
419 he_stop(he_dev);
420 atm_dev_deregister(atm_dev);
421 kfree(he_dev);
422
423 pci_set_drvdata(pci_dev, NULL);
424 pci_disable_device(pci_dev);
425 }
426
427
428 static unsigned
429 rate_to_atmf(unsigned rate) /* cps to atm forum format */
430 {
431 #define NONZERO (1 << 14)
432
433 unsigned exp = 0;
434
435 if (rate == 0)
436 return 0;
437
438 rate <<= 9;
439 while (rate > 0x3ff) {
440 ++exp;
441 rate >>= 1;
442 }
443
444 return (NONZERO | (exp << 9) | (rate & 0x1ff));
445 }
446
447 static void __devinit
448 he_init_rx_lbfp0(struct he_dev *he_dev)
449 {
450 unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count;
451 unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf;
452 unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD;
453 unsigned row_offset = he_dev->r0_startrow * he_dev->bytes_per_row;
454
455 lbufd_index = 0;
456 lbm_offset = he_readl(he_dev, RCMLBM_BA);
457
458 he_writel(he_dev, lbufd_index, RLBF0_H);
459
460 for (i = 0, lbuf_count = 0; i < he_dev->r0_numbuffs; ++i) {
461 lbufd_index += 2;
462 lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32;
463
464 he_writel_rcm(he_dev, lbuf_addr, lbm_offset);
465 he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1);
466
467 if (++lbuf_count == lbufs_per_row) {
468 lbuf_count = 0;
469 row_offset += he_dev->bytes_per_row;
470 }
471 lbm_offset += 4;
472 }
473
474 he_writel(he_dev, lbufd_index - 2, RLBF0_T);
475 he_writel(he_dev, he_dev->r0_numbuffs, RLBF0_C);
476 }
477
478 static void __devinit
479 he_init_rx_lbfp1(struct he_dev *he_dev)
480 {
481 unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count;
482 unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf;
483 unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD;
484 unsigned row_offset = he_dev->r1_startrow * he_dev->bytes_per_row;
485
486 lbufd_index = 1;
487 lbm_offset = he_readl(he_dev, RCMLBM_BA) + (2 * lbufd_index);
488
489 he_writel(he_dev, lbufd_index, RLBF1_H);
490
491 for (i = 0, lbuf_count = 0; i < he_dev->r1_numbuffs; ++i) {
492 lbufd_index += 2;
493 lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32;
494
495 he_writel_rcm(he_dev, lbuf_addr, lbm_offset);
496 he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1);
497
498 if (++lbuf_count == lbufs_per_row) {
499 lbuf_count = 0;
500 row_offset += he_dev->bytes_per_row;
501 }
502 lbm_offset += 4;
503 }
504
505 he_writel(he_dev, lbufd_index - 2, RLBF1_T);
506 he_writel(he_dev, he_dev->r1_numbuffs, RLBF1_C);
507 }
508
509 static void __devinit
510 he_init_tx_lbfp(struct he_dev *he_dev)
511 {
512 unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count;
513 unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf;
514 unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD;
515 unsigned row_offset = he_dev->tx_startrow * he_dev->bytes_per_row;
516
517 lbufd_index = he_dev->r0_numbuffs + he_dev->r1_numbuffs;
518 lbm_offset = he_readl(he_dev, RCMLBM_BA) + (2 * lbufd_index);
519
520 he_writel(he_dev, lbufd_index, TLBF_H);
521
522 for (i = 0, lbuf_count = 0; i < he_dev->tx_numbuffs; ++i) {
523 lbufd_index += 1;
524 lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32;
525
526 he_writel_rcm(he_dev, lbuf_addr, lbm_offset);
527 he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1);
528
529 if (++lbuf_count == lbufs_per_row) {
530 lbuf_count = 0;
531 row_offset += he_dev->bytes_per_row;
532 }
533 lbm_offset += 2;
534 }
535
536 he_writel(he_dev, lbufd_index - 1, TLBF_T);
537 }
538
539 static int __devinit
540 he_init_tpdrq(struct he_dev *he_dev)
541 {
542 he_dev->tpdrq_base = pci_alloc_consistent(he_dev->pci_dev,
543 CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq), &he_dev->tpdrq_phys);
544 if (he_dev->tpdrq_base == NULL) {
545 hprintk("failed to alloc tpdrq\n");
546 return -ENOMEM;
547 }
548 memset(he_dev->tpdrq_base, 0,
549 CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq));
550
551 he_dev->tpdrq_tail = he_dev->tpdrq_base;
552 he_dev->tpdrq_head = he_dev->tpdrq_base;
553
554 he_writel(he_dev, he_dev->tpdrq_phys, TPDRQ_B_H);
555 he_writel(he_dev, 0, TPDRQ_T);
556 he_writel(he_dev, CONFIG_TPDRQ_SIZE - 1, TPDRQ_S);
557
558 return 0;
559 }
560
561 static void __devinit
562 he_init_cs_block(struct he_dev *he_dev)
563 {
564 unsigned clock, rate, delta;
565 int reg;
566
567 /* 5.1.7 cs block initialization */
568
569 for (reg = 0; reg < 0x20; ++reg)
570 he_writel_mbox(he_dev, 0x0, CS_STTIM0 + reg);
571
572 /* rate grid timer reload values */
573
574 clock = he_is622(he_dev) ? 66667000 : 50000000;
575 rate = he_dev->atm_dev->link_rate;
576 delta = rate / 16 / 2;
577
578 for (reg = 0; reg < 0x10; ++reg) {
579 /* 2.4 internal transmit function
580 *
581 * we initialize the first row in the rate grid.
582 * values are period (in clock cycles) of timer
583 */
584 unsigned period = clock / rate;
585
586 he_writel_mbox(he_dev, period, CS_TGRLD0 + reg);
587 rate -= delta;
588 }
589
590 if (he_is622(he_dev)) {
591 /* table 5.2 (4 cells per lbuf) */
592 he_writel_mbox(he_dev, 0x000800fa, CS_ERTHR0);
593 he_writel_mbox(he_dev, 0x000c33cb, CS_ERTHR1);
594 he_writel_mbox(he_dev, 0x0010101b, CS_ERTHR2);
595 he_writel_mbox(he_dev, 0x00181dac, CS_ERTHR3);
596 he_writel_mbox(he_dev, 0x00280600, CS_ERTHR4);
597
598 /* table 5.3, 5.4, 5.5, 5.6, 5.7 */
599 he_writel_mbox(he_dev, 0x023de8b3, CS_ERCTL0);
600 he_writel_mbox(he_dev, 0x1801, CS_ERCTL1);
601 he_writel_mbox(he_dev, 0x68b3, CS_ERCTL2);
602 he_writel_mbox(he_dev, 0x1280, CS_ERSTAT0);
603 he_writel_mbox(he_dev, 0x68b3, CS_ERSTAT1);
604 he_writel_mbox(he_dev, 0x14585, CS_RTFWR);
605
606 he_writel_mbox(he_dev, 0x4680, CS_RTATR);
607
608 /* table 5.8 */
609 he_writel_mbox(he_dev, 0x00159ece, CS_TFBSET);
610 he_writel_mbox(he_dev, 0x68b3, CS_WCRMAX);
611 he_writel_mbox(he_dev, 0x5eb3, CS_WCRMIN);
612 he_writel_mbox(he_dev, 0xe8b3, CS_WCRINC);
613 he_writel_mbox(he_dev, 0xdeb3, CS_WCRDEC);
614 he_writel_mbox(he_dev, 0x68b3, CS_WCRCEIL);
615
616 /* table 5.9 */
617 he_writel_mbox(he_dev, 0x5, CS_OTPPER);
618 he_writel_mbox(he_dev, 0x14, CS_OTWPER);
619 } else {
620 /* table 5.1 (4 cells per lbuf) */
621 he_writel_mbox(he_dev, 0x000400ea, CS_ERTHR0);
622 he_writel_mbox(he_dev, 0x00063388, CS_ERTHR1);
623 he_writel_mbox(he_dev, 0x00081018, CS_ERTHR2);
624 he_writel_mbox(he_dev, 0x000c1dac, CS_ERTHR3);
625 he_writel_mbox(he_dev, 0x0014051a, CS_ERTHR4);
626
627 /* table 5.3, 5.4, 5.5, 5.6, 5.7 */
628 he_writel_mbox(he_dev, 0x0235e4b1, CS_ERCTL0);
629 he_writel_mbox(he_dev, 0x4701, CS_ERCTL1);
630 he_writel_mbox(he_dev, 0x64b1, CS_ERCTL2);
631 he_writel_mbox(he_dev, 0x1280, CS_ERSTAT0);
632 he_writel_mbox(he_dev, 0x64b1, CS_ERSTAT1);
633 he_writel_mbox(he_dev, 0xf424, CS_RTFWR);
634
635 he_writel_mbox(he_dev, 0x4680, CS_RTATR);
636
637 /* table 5.8 */
638 he_writel_mbox(he_dev, 0x000563b7, CS_TFBSET);
639 he_writel_mbox(he_dev, 0x64b1, CS_WCRMAX);
640 he_writel_mbox(he_dev, 0x5ab1, CS_WCRMIN);
641 he_writel_mbox(he_dev, 0xe4b1, CS_WCRINC);
642 he_writel_mbox(he_dev, 0xdab1, CS_WCRDEC);
643 he_writel_mbox(he_dev, 0x64b1, CS_WCRCEIL);
644
645 /* table 5.9 */
646 he_writel_mbox(he_dev, 0x6, CS_OTPPER);
647 he_writel_mbox(he_dev, 0x1e, CS_OTWPER);
648 }
649
650 he_writel_mbox(he_dev, 0x8, CS_OTTLIM);
651
652 for (reg = 0; reg < 0x8; ++reg)
653 he_writel_mbox(he_dev, 0x0, CS_HGRRT0 + reg);
654
655 }
656
657 static int __devinit
658 he_init_cs_block_rcm(struct he_dev *he_dev)
659 {
660 unsigned (*rategrid)[16][16];
661 unsigned rate, delta;
662 int i, j, reg;
663
664 unsigned rate_atmf, exp, man;
665 unsigned long long rate_cps;
666 int mult, buf, buf_limit = 4;
667
668 rategrid = kmalloc( sizeof(unsigned) * 16 * 16, GFP_KERNEL);
669 if (!rategrid)
670 return -ENOMEM;
671
672 /* initialize rate grid group table */
673
674 for (reg = 0x0; reg < 0xff; ++reg)
675 he_writel_rcm(he_dev, 0x0, CONFIG_RCMABR + reg);
676
677 /* initialize rate controller groups */
678
679 for (reg = 0x100; reg < 0x1ff; ++reg)
680 he_writel_rcm(he_dev, 0x0, CONFIG_RCMABR + reg);
681
682 /* initialize tNrm lookup table */
683
684 /* the manual makes reference to a routine in a sample driver
685 for proper configuration; fortunately, we only need this
686 in order to support abr connection */
687
688 /* initialize rate to group table */
689
690 rate = he_dev->atm_dev->link_rate;
691 delta = rate / 32;
692
693 /*
694 * 2.4 transmit internal functions
695 *
696 * we construct a copy of the rate grid used by the scheduler
697 * in order to construct the rate to group table below
698 */
699
700 for (j = 0; j < 16; j++) {
701 (*rategrid)[0][j] = rate;
702 rate -= delta;
703 }
704
705 for (i = 1; i < 16; i++)
706 for (j = 0; j < 16; j++)
707 if (i > 14)
708 (*rategrid)[i][j] = (*rategrid)[i - 1][j] / 4;
709 else
710 (*rategrid)[i][j] = (*rategrid)[i - 1][j] / 2;
711
712 /*
713 * 2.4 transmit internal function
714 *
715 * this table maps the upper 5 bits of exponent and mantissa
716 * of the atm forum representation of the rate into an index
717 * on rate grid
718 */
719
720 rate_atmf = 0;
721 while (rate_atmf < 0x400) {
722 man = (rate_atmf & 0x1f) << 4;
723 exp = rate_atmf >> 5;
724
725 /*
726 instead of '/ 512', use '>> 9' to prevent a call
727 to divdu3 on x86 platforms
728 */
729 rate_cps = (unsigned long long) (1 << exp) * (man + 512) >> 9;
730
731 if (rate_cps < 10)
732 rate_cps = 10; /* 2.2.1 minimum payload rate is 10 cps */
733
734 for (i = 255; i > 0; i--)
735 if ((*rategrid)[i/16][i%16] >= rate_cps)
736 break; /* pick nearest rate instead? */
737
738 /*
739 * each table entry is 16 bits: (rate grid index (8 bits)
740 * and a buffer limit (8 bits)
741 * there are two table entries in each 32-bit register
742 */
743
744 #ifdef notdef
745 buf = rate_cps * he_dev->tx_numbuffs /
746 (he_dev->atm_dev->link_rate * 2);
747 #else
748 /* this is pretty, but avoids _divdu3 and is mostly correct */
749 mult = he_dev->atm_dev->link_rate / ATM_OC3_PCR;
750 if (rate_cps > (272 * mult))
751 buf = 4;
752 else if (rate_cps > (204 * mult))
753 buf = 3;
754 else if (rate_cps > (136 * mult))
755 buf = 2;
756 else if (rate_cps > (68 * mult))
757 buf = 1;
758 else
759 buf = 0;
760 #endif
761 if (buf > buf_limit)
762 buf = buf_limit;
763 reg = (reg << 16) | ((i << 8) | buf);
764
765 #define RTGTBL_OFFSET 0x400
766
767 if (rate_atmf & 0x1)
768 he_writel_rcm(he_dev, reg,
769 CONFIG_RCMABR + RTGTBL_OFFSET + (rate_atmf >> 1));
770
771 ++rate_atmf;
772 }
773
774 kfree(rategrid);
775 return 0;
776 }
777
778 static int __devinit
779 he_init_group(struct he_dev *he_dev, int group)
780 {
781 int i;
782
783 /* small buffer pool */
784 he_dev->rbps_pool = pci_pool_create("rbps", he_dev->pci_dev,
785 CONFIG_RBPS_BUFSIZE, 8, 0);
786 if (he_dev->rbps_pool == NULL) {
787 hprintk("unable to create rbps pages\n");
788 return -ENOMEM;
789 }
790
791 he_dev->rbps_base = pci_alloc_consistent(he_dev->pci_dev,
792 CONFIG_RBPS_SIZE * sizeof(struct he_rbp), &he_dev->rbps_phys);
793 if (he_dev->rbps_base == NULL) {
794 hprintk("failed to alloc rbps_base\n");
795 goto out_destroy_rbps_pool;
796 }
797 memset(he_dev->rbps_base, 0, CONFIG_RBPS_SIZE * sizeof(struct he_rbp));
798 he_dev->rbps_virt = kmalloc(CONFIG_RBPS_SIZE * sizeof(struct he_virt), GFP_KERNEL);
799 if (he_dev->rbps_virt == NULL) {
800 hprintk("failed to alloc rbps_virt\n");
801 goto out_free_rbps_base;
802 }
803
804 for (i = 0; i < CONFIG_RBPS_SIZE; ++i) {
805 dma_addr_t dma_handle;
806 void *cpuaddr;
807
808 cpuaddr = pci_pool_alloc(he_dev->rbps_pool, GFP_KERNEL|GFP_DMA, &dma_handle);
809 if (cpuaddr == NULL)
810 goto out_free_rbps_virt;
811
812 he_dev->rbps_virt[i].virt = cpuaddr;
813 he_dev->rbps_base[i].status = RBP_LOANED | RBP_SMALLBUF | (i << RBP_INDEX_OFF);
814 he_dev->rbps_base[i].phys = dma_handle;
815
816 }
817 he_dev->rbps_tail = &he_dev->rbps_base[CONFIG_RBPS_SIZE - 1];
818
819 he_writel(he_dev, he_dev->rbps_phys, G0_RBPS_S + (group * 32));
820 he_writel(he_dev, RBPS_MASK(he_dev->rbps_tail),
821 G0_RBPS_T + (group * 32));
822 he_writel(he_dev, CONFIG_RBPS_BUFSIZE/4,
823 G0_RBPS_BS + (group * 32));
824 he_writel(he_dev,
825 RBP_THRESH(CONFIG_RBPS_THRESH) |
826 RBP_QSIZE(CONFIG_RBPS_SIZE - 1) |
827 RBP_INT_ENB,
828 G0_RBPS_QI + (group * 32));
829
830 /* large buffer pool */
831 he_dev->rbpl_pool = pci_pool_create("rbpl", he_dev->pci_dev,
832 CONFIG_RBPL_BUFSIZE, 8, 0);
833 if (he_dev->rbpl_pool == NULL) {
834 hprintk("unable to create rbpl pool\n");
835 goto out_free_rbps_virt;
836 }
837
838 he_dev->rbpl_base = pci_alloc_consistent(he_dev->pci_dev,
839 CONFIG_RBPL_SIZE * sizeof(struct he_rbp), &he_dev->rbpl_phys);
840 if (he_dev->rbpl_base == NULL) {
841 hprintk("failed to alloc rbpl_base\n");
842 goto out_destroy_rbpl_pool;
843 }
844 memset(he_dev->rbpl_base, 0, CONFIG_RBPL_SIZE * sizeof(struct he_rbp));
845 he_dev->rbpl_virt = kmalloc(CONFIG_RBPL_SIZE * sizeof(struct he_virt), GFP_KERNEL);
846 if (he_dev->rbpl_virt == NULL) {
847 hprintk("failed to alloc rbpl_virt\n");
848 goto out_free_rbpl_base;
849 }
850
851 for (i = 0; i < CONFIG_RBPL_SIZE; ++i) {
852 dma_addr_t dma_handle;
853 void *cpuaddr;
854
855 cpuaddr = pci_pool_alloc(he_dev->rbpl_pool, GFP_KERNEL|GFP_DMA, &dma_handle);
856 if (cpuaddr == NULL)
857 goto out_free_rbpl_virt;
858
859 he_dev->rbpl_virt[i].virt = cpuaddr;
860 he_dev->rbpl_base[i].status = RBP_LOANED | (i << RBP_INDEX_OFF);
861 he_dev->rbpl_base[i].phys = dma_handle;
862 }
863 he_dev->rbpl_tail = &he_dev->rbpl_base[CONFIG_RBPL_SIZE - 1];
864
865 he_writel(he_dev, he_dev->rbpl_phys, G0_RBPL_S + (group * 32));
866 he_writel(he_dev, RBPL_MASK(he_dev->rbpl_tail),
867 G0_RBPL_T + (group * 32));
868 he_writel(he_dev, CONFIG_RBPL_BUFSIZE/4,
869 G0_RBPL_BS + (group * 32));
870 he_writel(he_dev,
871 RBP_THRESH(CONFIG_RBPL_THRESH) |
872 RBP_QSIZE(CONFIG_RBPL_SIZE - 1) |
873 RBP_INT_ENB,
874 G0_RBPL_QI + (group * 32));
875
876 /* rx buffer ready queue */
877
878 he_dev->rbrq_base = pci_alloc_consistent(he_dev->pci_dev,
879 CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq), &he_dev->rbrq_phys);
880 if (he_dev->rbrq_base == NULL) {
881 hprintk("failed to allocate rbrq\n");
882 goto out_free_rbpl_virt;
883 }
884 memset(he_dev->rbrq_base, 0, CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq));
885
886 he_dev->rbrq_head = he_dev->rbrq_base;
887 he_writel(he_dev, he_dev->rbrq_phys, G0_RBRQ_ST + (group * 16));
888 he_writel(he_dev, 0, G0_RBRQ_H + (group * 16));
889 he_writel(he_dev,
890 RBRQ_THRESH(CONFIG_RBRQ_THRESH) | RBRQ_SIZE(CONFIG_RBRQ_SIZE - 1),
891 G0_RBRQ_Q + (group * 16));
892 if (irq_coalesce) {
893 hprintk("coalescing interrupts\n");
894 he_writel(he_dev, RBRQ_TIME(768) | RBRQ_COUNT(7),
895 G0_RBRQ_I + (group * 16));
896 } else
897 he_writel(he_dev, RBRQ_TIME(0) | RBRQ_COUNT(1),
898 G0_RBRQ_I + (group * 16));
899
900 /* tx buffer ready queue */
901
902 he_dev->tbrq_base = pci_alloc_consistent(he_dev->pci_dev,
903 CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), &he_dev->tbrq_phys);
904 if (he_dev->tbrq_base == NULL) {
905 hprintk("failed to allocate tbrq\n");
906 goto out_free_rbpq_base;
907 }
908 memset(he_dev->tbrq_base, 0, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq));
909
910 he_dev->tbrq_head = he_dev->tbrq_base;
911
912 he_writel(he_dev, he_dev->tbrq_phys, G0_TBRQ_B_T + (group * 16));
913 he_writel(he_dev, 0, G0_TBRQ_H + (group * 16));
914 he_writel(he_dev, CONFIG_TBRQ_SIZE - 1, G0_TBRQ_S + (group * 16));
915 he_writel(he_dev, CONFIG_TBRQ_THRESH, G0_TBRQ_THRESH + (group * 16));
916
917 return 0;
918
919 out_free_rbpq_base:
920 pci_free_consistent(he_dev->pci_dev, CONFIG_RBRQ_SIZE *
921 sizeof(struct he_rbrq), he_dev->rbrq_base,
922 he_dev->rbrq_phys);
923 i = CONFIG_RBPL_SIZE;
924 out_free_rbpl_virt:
925 while (i--)
926 pci_pool_free(he_dev->rbpl_pool, he_dev->rbpl_virt[i].virt,
927 he_dev->rbpl_base[i].phys);
928 kfree(he_dev->rbpl_virt);
929
930 out_free_rbpl_base:
931 pci_free_consistent(he_dev->pci_dev, CONFIG_RBPL_SIZE *
932 sizeof(struct he_rbp), he_dev->rbpl_base,
933 he_dev->rbpl_phys);
934 out_destroy_rbpl_pool:
935 pci_pool_destroy(he_dev->rbpl_pool);
936
937 i = CONFIG_RBPS_SIZE;
938 out_free_rbps_virt:
939 while (i--)
940 pci_pool_free(he_dev->rbps_pool, he_dev->rbps_virt[i].virt,
941 he_dev->rbps_base[i].phys);
942 kfree(he_dev->rbps_virt);
943
944 out_free_rbps_base:
945 pci_free_consistent(he_dev->pci_dev, CONFIG_RBPS_SIZE *
946 sizeof(struct he_rbp), he_dev->rbps_base,
947 he_dev->rbps_phys);
948 out_destroy_rbps_pool:
949 pci_pool_destroy(he_dev->rbps_pool);
950 return -ENOMEM;
951 }
952
953 static int __devinit
954 he_init_irq(struct he_dev *he_dev)
955 {
956 int i;
957
958 /* 2.9.3.5 tail offset for each interrupt queue is located after the
959 end of the interrupt queue */
960
961 he_dev->irq_base = pci_alloc_consistent(he_dev->pci_dev,
962 (CONFIG_IRQ_SIZE+1) * sizeof(struct he_irq), &he_dev->irq_phys);
963 if (he_dev->irq_base == NULL) {
964 hprintk("failed to allocate irq\n");
965 return -ENOMEM;
966 }
967 he_dev->irq_tailoffset = (unsigned *)
968 &he_dev->irq_base[CONFIG_IRQ_SIZE];
969 *he_dev->irq_tailoffset = 0;
970 he_dev->irq_head = he_dev->irq_base;
971 he_dev->irq_tail = he_dev->irq_base;
972
973 for (i = 0; i < CONFIG_IRQ_SIZE; ++i)
974 he_dev->irq_base[i].isw = ITYPE_INVALID;
975
976 he_writel(he_dev, he_dev->irq_phys, IRQ0_BASE);
977 he_writel(he_dev,
978 IRQ_SIZE(CONFIG_IRQ_SIZE) | IRQ_THRESH(CONFIG_IRQ_THRESH),
979 IRQ0_HEAD);
980 he_writel(he_dev, IRQ_INT_A | IRQ_TYPE_LINE, IRQ0_CNTL);
981 he_writel(he_dev, 0x0, IRQ0_DATA);
982
983 he_writel(he_dev, 0x0, IRQ1_BASE);
984 he_writel(he_dev, 0x0, IRQ1_HEAD);
985 he_writel(he_dev, 0x0, IRQ1_CNTL);
986 he_writel(he_dev, 0x0, IRQ1_DATA);
987
988 he_writel(he_dev, 0x0, IRQ2_BASE);
989 he_writel(he_dev, 0x0, IRQ2_HEAD);
990 he_writel(he_dev, 0x0, IRQ2_CNTL);
991 he_writel(he_dev, 0x0, IRQ2_DATA);
992
993 he_writel(he_dev, 0x0, IRQ3_BASE);
994 he_writel(he_dev, 0x0, IRQ3_HEAD);
995 he_writel(he_dev, 0x0, IRQ3_CNTL);
996 he_writel(he_dev, 0x0, IRQ3_DATA);
997
998 /* 2.9.3.2 interrupt queue mapping registers */
999
1000 he_writel(he_dev, 0x0, GRP_10_MAP);
1001 he_writel(he_dev, 0x0, GRP_32_MAP);
1002 he_writel(he_dev, 0x0, GRP_54_MAP);
1003 he_writel(he_dev, 0x0, GRP_76_MAP);
1004
1005 if (request_irq(he_dev->pci_dev->irq, he_irq_handler, IRQF_DISABLED|IRQF_SHARED, DEV_LABEL, he_dev)) {
1006 hprintk("irq %d already in use\n", he_dev->pci_dev->irq);
1007 return -EINVAL;
1008 }
1009
1010 he_dev->irq = he_dev->pci_dev->irq;
1011
1012 return 0;
1013 }
1014
1015 static int __devinit
1016 he_start(struct atm_dev *dev)
1017 {
1018 struct he_dev *he_dev;
1019 struct pci_dev *pci_dev;
1020 unsigned long membase;
1021
1022 u16 command;
1023 u32 gen_cntl_0, host_cntl, lb_swap;
1024 u8 cache_size, timer;
1025
1026 unsigned err;
1027 unsigned int status, reg;
1028 int i, group;
1029
1030 he_dev = HE_DEV(dev);
1031 pci_dev = he_dev->pci_dev;
1032
1033 membase = pci_resource_start(pci_dev, 0);
1034 HPRINTK("membase = 0x%lx irq = %d.\n", membase, pci_dev->irq);
1035
1036 /*
1037 * pci bus controller initialization
1038 */
1039
1040 /* 4.3 pci bus controller-specific initialization */
1041 if (pci_read_config_dword(pci_dev, GEN_CNTL_0, &gen_cntl_0) != 0) {
1042 hprintk("can't read GEN_CNTL_0\n");
1043 return -EINVAL;
1044 }
1045 gen_cntl_0 |= (MRL_ENB | MRM_ENB | IGNORE_TIMEOUT);
1046 if (pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0) != 0) {
1047 hprintk("can't write GEN_CNTL_0.\n");
1048 return -EINVAL;
1049 }
1050
1051 if (pci_read_config_word(pci_dev, PCI_COMMAND, &command) != 0) {
1052 hprintk("can't read PCI_COMMAND.\n");
1053 return -EINVAL;
1054 }
1055
1056 command |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE);
1057 if (pci_write_config_word(pci_dev, PCI_COMMAND, command) != 0) {
1058 hprintk("can't enable memory.\n");
1059 return -EINVAL;
1060 }
1061
1062 if (pci_read_config_byte(pci_dev, PCI_CACHE_LINE_SIZE, &cache_size)) {
1063 hprintk("can't read cache line size?\n");
1064 return -EINVAL;
1065 }
1066
1067 if (cache_size < 16) {
1068 cache_size = 16;
1069 if (pci_write_config_byte(pci_dev, PCI_CACHE_LINE_SIZE, cache_size))
1070 hprintk("can't set cache line size to %d\n", cache_size);
1071 }
1072
1073 if (pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER, &timer)) {
1074 hprintk("can't read latency timer?\n");
1075 return -EINVAL;
1076 }
1077
1078 /* from table 3.9
1079 *
1080 * LAT_TIMER = 1 + AVG_LAT + BURST_SIZE/BUS_SIZE
1081 *
1082 * AVG_LAT: The average first data read/write latency [maximum 16 clock cycles]
1083 * BURST_SIZE: 1536 bytes (read) for 622, 768 bytes (read) for 155 [192 clock cycles]
1084 *
1085 */
1086 #define LAT_TIMER 209
1087 if (timer < LAT_TIMER) {
1088 HPRINTK("latency timer was %d, setting to %d\n", timer, LAT_TIMER);
1089 timer = LAT_TIMER;
1090 if (pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, timer))
1091 hprintk("can't set latency timer to %d\n", timer);
1092 }
1093
1094 if (!(he_dev->membase = ioremap(membase, HE_REGMAP_SIZE))) {
1095 hprintk("can't set up page mapping\n");
1096 return -EINVAL;
1097 }
1098
1099 /* 4.4 card reset */
1100 he_writel(he_dev, 0x0, RESET_CNTL);
1101 he_writel(he_dev, 0xff, RESET_CNTL);
1102
1103 udelay(16*1000); /* 16 ms */
1104 status = he_readl(he_dev, RESET_CNTL);
1105 if ((status & BOARD_RST_STATUS) == 0) {
1106 hprintk("reset failed\n");
1107 return -EINVAL;
1108 }
1109
1110 /* 4.5 set bus width */
1111 host_cntl = he_readl(he_dev, HOST_CNTL);
1112 if (host_cntl & PCI_BUS_SIZE64)
1113 gen_cntl_0 |= ENBL_64;
1114 else
1115 gen_cntl_0 &= ~ENBL_64;
1116
1117 if (disable64 == 1) {
1118 hprintk("disabling 64-bit pci bus transfers\n");
1119 gen_cntl_0 &= ~ENBL_64;
1120 }
1121
1122 if (gen_cntl_0 & ENBL_64)
1123 hprintk("64-bit transfers enabled\n");
1124
1125 pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0);
1126
1127 /* 4.7 read prom contents */
1128 for (i = 0; i < PROD_ID_LEN; ++i)
1129 he_dev->prod_id[i] = read_prom_byte(he_dev, PROD_ID + i);
1130
1131 he_dev->media = read_prom_byte(he_dev, MEDIA);
1132
1133 for (i = 0; i < 6; ++i)
1134 dev->esi[i] = read_prom_byte(he_dev, MAC_ADDR + i);
1135
1136 hprintk("%s%s, %x:%x:%x:%x:%x:%x\n",
1137 he_dev->prod_id,
1138 he_dev->media & 0x40 ? "SM" : "MM",
1139 dev->esi[0],
1140 dev->esi[1],
1141 dev->esi[2],
1142 dev->esi[3],
1143 dev->esi[4],
1144 dev->esi[5]);
1145 he_dev->atm_dev->link_rate = he_is622(he_dev) ?
1146 ATM_OC12_PCR : ATM_OC3_PCR;
1147
1148 /* 4.6 set host endianess */
1149 lb_swap = he_readl(he_dev, LB_SWAP);
1150 if (he_is622(he_dev))
1151 lb_swap &= ~XFER_SIZE; /* 4 cells */
1152 else
1153 lb_swap |= XFER_SIZE; /* 8 cells */
1154 #ifdef __BIG_ENDIAN
1155 lb_swap |= DESC_WR_SWAP | INTR_SWAP | BIG_ENDIAN_HOST;
1156 #else
1157 lb_swap &= ~(DESC_WR_SWAP | INTR_SWAP | BIG_ENDIAN_HOST |
1158 DATA_WR_SWAP | DATA_RD_SWAP | DESC_RD_SWAP);
1159 #endif /* __BIG_ENDIAN */
1160 he_writel(he_dev, lb_swap, LB_SWAP);
1161
1162 /* 4.8 sdram controller initialization */
1163 he_writel(he_dev, he_is622(he_dev) ? LB_64_ENB : 0x0, SDRAM_CTL);
1164
1165 /* 4.9 initialize rnum value */
1166 lb_swap |= SWAP_RNUM_MAX(0xf);
1167 he_writel(he_dev, lb_swap, LB_SWAP);
1168
1169 /* 4.10 initialize the interrupt queues */
1170 if ((err = he_init_irq(he_dev)) != 0)
1171 return err;
1172
1173 /* 4.11 enable pci bus controller state machines */
1174 host_cntl |= (OUTFF_ENB | CMDFF_ENB |
1175 QUICK_RD_RETRY | QUICK_WR_RETRY | PERR_INT_ENB);
1176 he_writel(he_dev, host_cntl, HOST_CNTL);
1177
1178 gen_cntl_0 |= INT_PROC_ENBL|INIT_ENB;
1179 pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0);
1180
1181 /*
1182 * atm network controller initialization
1183 */
1184
1185 /* 5.1.1 generic configuration state */
1186
1187 /*
1188 * local (cell) buffer memory map
1189 *
1190 * HE155 HE622
1191 *
1192 * 0 ____________1023 bytes 0 _______________________2047 bytes
1193 * | | | | |
1194 * | utility | | rx0 | |
1195 * 5|____________| 255|___________________| u |
1196 * 6| | 256| | t |
1197 * | | | | i |
1198 * | rx0 | row | tx | l |
1199 * | | | | i |
1200 * | | 767|___________________| t |
1201 * 517|____________| 768| | y |
1202 * row 518| | | rx1 | |
1203 * | | 1023|___________________|___|
1204 * | |
1205 * | tx |
1206 * | |
1207 * | |
1208 * 1535|____________|
1209 * 1536| |
1210 * | rx1 |
1211 * 2047|____________|
1212 *
1213 */
1214
1215 /* total 4096 connections */
1216 he_dev->vcibits = CONFIG_DEFAULT_VCIBITS;
1217 he_dev->vpibits = CONFIG_DEFAULT_VPIBITS;
1218
1219 if (nvpibits != -1 && nvcibits != -1 && nvpibits+nvcibits != HE_MAXCIDBITS) {
1220 hprintk("nvpibits + nvcibits != %d\n", HE_MAXCIDBITS);
1221 return -ENODEV;
1222 }
1223
1224 if (nvpibits != -1) {
1225 he_dev->vpibits = nvpibits;
1226 he_dev->vcibits = HE_MAXCIDBITS - nvpibits;
1227 }
1228
1229 if (nvcibits != -1) {
1230 he_dev->vcibits = nvcibits;
1231 he_dev->vpibits = HE_MAXCIDBITS - nvcibits;
1232 }
1233
1234
1235 if (he_is622(he_dev)) {
1236 he_dev->cells_per_row = 40;
1237 he_dev->bytes_per_row = 2048;
1238 he_dev->r0_numrows = 256;
1239 he_dev->tx_numrows = 512;
1240 he_dev->r1_numrows = 256;
1241 he_dev->r0_startrow = 0;
1242 he_dev->tx_startrow = 256;
1243 he_dev->r1_startrow = 768;
1244 } else {
1245 he_dev->cells_per_row = 20;
1246 he_dev->bytes_per_row = 1024;
1247 he_dev->r0_numrows = 512;
1248 he_dev->tx_numrows = 1018;
1249 he_dev->r1_numrows = 512;
1250 he_dev->r0_startrow = 6;
1251 he_dev->tx_startrow = 518;
1252 he_dev->r1_startrow = 1536;
1253 }
1254
1255 he_dev->cells_per_lbuf = 4;
1256 he_dev->buffer_limit = 4;
1257 he_dev->r0_numbuffs = he_dev->r0_numrows *
1258 he_dev->cells_per_row / he_dev->cells_per_lbuf;
1259 if (he_dev->r0_numbuffs > 2560)
1260 he_dev->r0_numbuffs = 2560;
1261
1262 he_dev->r1_numbuffs = he_dev->r1_numrows *
1263 he_dev->cells_per_row / he_dev->cells_per_lbuf;
1264 if (he_dev->r1_numbuffs > 2560)
1265 he_dev->r1_numbuffs = 2560;
1266
1267 he_dev->tx_numbuffs = he_dev->tx_numrows *
1268 he_dev->cells_per_row / he_dev->cells_per_lbuf;
1269 if (he_dev->tx_numbuffs > 5120)
1270 he_dev->tx_numbuffs = 5120;
1271
1272 /* 5.1.2 configure hardware dependent registers */
1273
1274 he_writel(he_dev,
1275 SLICE_X(0x2) | ARB_RNUM_MAX(0xf) | TH_PRTY(0x3) |
1276 RH_PRTY(0x3) | TL_PRTY(0x2) | RL_PRTY(0x1) |
1277 (he_is622(he_dev) ? BUS_MULTI(0x28) : BUS_MULTI(0x46)) |
1278 (he_is622(he_dev) ? NET_PREF(0x50) : NET_PREF(0x8c)),
1279 LBARB);
1280
1281 he_writel(he_dev, BANK_ON |
1282 (he_is622(he_dev) ? (REF_RATE(0x384) | WIDE_DATA) : REF_RATE(0x150)),
1283 SDRAMCON);
1284
1285 he_writel(he_dev,
1286 (he_is622(he_dev) ? RM_BANK_WAIT(1) : RM_BANK_WAIT(0)) |
1287 RM_RW_WAIT(1), RCMCONFIG);
1288 he_writel(he_dev,
1289 (he_is622(he_dev) ? TM_BANK_WAIT(2) : TM_BANK_WAIT(1)) |
1290 TM_RW_WAIT(1), TCMCONFIG);
1291
1292 he_writel(he_dev, he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD, LB_CONFIG);
1293
1294 he_writel(he_dev,
1295 (he_is622(he_dev) ? UT_RD_DELAY(8) : UT_RD_DELAY(0)) |
1296 (he_is622(he_dev) ? RC_UT_MODE(0) : RC_UT_MODE(1)) |
1297 RX_VALVP(he_dev->vpibits) |
1298 RX_VALVC(he_dev->vcibits), RC_CONFIG);
1299
1300 he_writel(he_dev, DRF_THRESH(0x20) |
1301 (he_is622(he_dev) ? TX_UT_MODE(0) : TX_UT_MODE(1)) |
1302 TX_VCI_MASK(he_dev->vcibits) |
1303 LBFREE_CNT(he_dev->tx_numbuffs), TX_CONFIG);
1304
1305 he_writel(he_dev, 0x0, TXAAL5_PROTO);
1306
1307 he_writel(he_dev, PHY_INT_ENB |
1308 (he_is622(he_dev) ? PTMR_PRE(67 - 1) : PTMR_PRE(50 - 1)),
1309 RH_CONFIG);
1310
1311 /* 5.1.3 initialize connection memory */
1312
1313 for (i = 0; i < TCM_MEM_SIZE; ++i)
1314 he_writel_tcm(he_dev, 0, i);
1315
1316 for (i = 0; i < RCM_MEM_SIZE; ++i)
1317 he_writel_rcm(he_dev, 0, i);
1318
1319 /*
1320 * transmit connection memory map
1321 *
1322 * tx memory
1323 * 0x0 ___________________
1324 * | |
1325 * | |
1326 * | TSRa |
1327 * | |
1328 * | |
1329 * 0x8000|___________________|
1330 * | |
1331 * | TSRb |
1332 * 0xc000|___________________|
1333 * | |
1334 * | TSRc |
1335 * 0xe000|___________________|
1336 * | TSRd |
1337 * 0xf000|___________________|
1338 * | tmABR |
1339 * 0x10000|___________________|
1340 * | |
1341 * | tmTPD |
1342 * |___________________|
1343 * | |
1344 * ....
1345 * 0x1ffff|___________________|
1346 *
1347 *
1348 */
1349
1350 he_writel(he_dev, CONFIG_TSRB, TSRB_BA);
1351 he_writel(he_dev, CONFIG_TSRC, TSRC_BA);
1352 he_writel(he_dev, CONFIG_TSRD, TSRD_BA);
1353 he_writel(he_dev, CONFIG_TMABR, TMABR_BA);
1354 he_writel(he_dev, CONFIG_TPDBA, TPD_BA);
1355
1356
1357 /*
1358 * receive connection memory map
1359 *
1360 * 0x0 ___________________
1361 * | |
1362 * | |
1363 * | RSRa |
1364 * | |
1365 * | |
1366 * 0x8000|___________________|
1367 * | |
1368 * | rx0/1 |
1369 * | LBM | link lists of local
1370 * | tx | buffer memory
1371 * | |
1372 * 0xd000|___________________|
1373 * | |
1374 * | rmABR |
1375 * 0xe000|___________________|
1376 * | |
1377 * | RSRb |
1378 * |___________________|
1379 * | |
1380 * ....
1381 * 0xffff|___________________|
1382 */
1383
1384 he_writel(he_dev, 0x08000, RCMLBM_BA);
1385 he_writel(he_dev, 0x0e000, RCMRSRB_BA);
1386 he_writel(he_dev, 0x0d800, RCMABR_BA);
1387
1388 /* 5.1.4 initialize local buffer free pools linked lists */
1389
1390 he_init_rx_lbfp0(he_dev);
1391 he_init_rx_lbfp1(he_dev);
1392
1393 he_writel(he_dev, 0x0, RLBC_H);
1394 he_writel(he_dev, 0x0, RLBC_T);
1395 he_writel(he_dev, 0x0, RLBC_H2);
1396
1397 he_writel(he_dev, 512, RXTHRSH); /* 10% of r0+r1 buffers */
1398 he_writel(he_dev, 256, LITHRSH); /* 5% of r0+r1 buffers */
1399
1400 he_init_tx_lbfp(he_dev);
1401
1402 he_writel(he_dev, he_is622(he_dev) ? 0x104780 : 0x800, UBUFF_BA);
1403
1404 /* 5.1.5 initialize intermediate receive queues */
1405
1406 if (he_is622(he_dev)) {
1407 he_writel(he_dev, 0x000f, G0_INMQ_S);
1408 he_writel(he_dev, 0x200f, G0_INMQ_L);
1409
1410 he_writel(he_dev, 0x001f, G1_INMQ_S);
1411 he_writel(he_dev, 0x201f, G1_INMQ_L);
1412
1413 he_writel(he_dev, 0x002f, G2_INMQ_S);
1414 he_writel(he_dev, 0x202f, G2_INMQ_L);
1415
1416 he_writel(he_dev, 0x003f, G3_INMQ_S);
1417 he_writel(he_dev, 0x203f, G3_INMQ_L);
1418
1419 he_writel(he_dev, 0x004f, G4_INMQ_S);
1420 he_writel(he_dev, 0x204f, G4_INMQ_L);
1421
1422 he_writel(he_dev, 0x005f, G5_INMQ_S);
1423 he_writel(he_dev, 0x205f, G5_INMQ_L);
1424
1425 he_writel(he_dev, 0x006f, G6_INMQ_S);
1426 he_writel(he_dev, 0x206f, G6_INMQ_L);
1427
1428 he_writel(he_dev, 0x007f, G7_INMQ_S);
1429 he_writel(he_dev, 0x207f, G7_INMQ_L);
1430 } else {
1431 he_writel(he_dev, 0x0000, G0_INMQ_S);
1432 he_writel(he_dev, 0x0008, G0_INMQ_L);
1433
1434 he_writel(he_dev, 0x0001, G1_INMQ_S);
1435 he_writel(he_dev, 0x0009, G1_INMQ_L);
1436
1437 he_writel(he_dev, 0x0002, G2_INMQ_S);
1438 he_writel(he_dev, 0x000a, G2_INMQ_L);
1439
1440 he_writel(he_dev, 0x0003, G3_INMQ_S);
1441 he_writel(he_dev, 0x000b, G3_INMQ_L);
1442
1443 he_writel(he_dev, 0x0004, G4_INMQ_S);
1444 he_writel(he_dev, 0x000c, G4_INMQ_L);
1445
1446 he_writel(he_dev, 0x0005, G5_INMQ_S);
1447 he_writel(he_dev, 0x000d, G5_INMQ_L);
1448
1449 he_writel(he_dev, 0x0006, G6_INMQ_S);
1450 he_writel(he_dev, 0x000e, G6_INMQ_L);
1451
1452 he_writel(he_dev, 0x0007, G7_INMQ_S);
1453 he_writel(he_dev, 0x000f, G7_INMQ_L);
1454 }
1455
1456 /* 5.1.6 application tunable parameters */
1457
1458 he_writel(he_dev, 0x0, MCC);
1459 he_writel(he_dev, 0x0, OEC);
1460 he_writel(he_dev, 0x0, DCC);
1461 he_writel(he_dev, 0x0, CEC);
1462
1463 /* 5.1.7 cs block initialization */
1464
1465 he_init_cs_block(he_dev);
1466
1467 /* 5.1.8 cs block connection memory initialization */
1468
1469 if (he_init_cs_block_rcm(he_dev) < 0)
1470 return -ENOMEM;
1471
1472 /* 5.1.10 initialize host structures */
1473
1474 he_init_tpdrq(he_dev);
1475
1476 he_dev->tpd_pool = pci_pool_create("tpd", he_dev->pci_dev,
1477 sizeof(struct he_tpd), TPD_ALIGNMENT, 0);
1478 if (he_dev->tpd_pool == NULL) {
1479 hprintk("unable to create tpd pci_pool\n");
1480 return -ENOMEM;
1481 }
1482
1483 INIT_LIST_HEAD(&he_dev->outstanding_tpds);
1484
1485 if (he_init_group(he_dev, 0) != 0)
1486 return -ENOMEM;
1487
1488 for (group = 1; group < HE_NUM_GROUPS; ++group) {
1489 he_writel(he_dev, 0x0, G0_RBPS_S + (group * 32));
1490 he_writel(he_dev, 0x0, G0_RBPS_T + (group * 32));
1491 he_writel(he_dev, 0x0, G0_RBPS_QI + (group * 32));
1492 he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0),
1493 G0_RBPS_BS + (group * 32));
1494
1495 he_writel(he_dev, 0x0, G0_RBPL_S + (group * 32));
1496 he_writel(he_dev, 0x0, G0_RBPL_T + (group * 32));
1497 he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0),
1498 G0_RBPL_QI + (group * 32));
1499 he_writel(he_dev, 0x0, G0_RBPL_BS + (group * 32));
1500
1501 he_writel(he_dev, 0x0, G0_RBRQ_ST + (group * 16));
1502 he_writel(he_dev, 0x0, G0_RBRQ_H + (group * 16));
1503 he_writel(he_dev, RBRQ_THRESH(0x1) | RBRQ_SIZE(0x0),
1504 G0_RBRQ_Q + (group * 16));
1505 he_writel(he_dev, 0x0, G0_RBRQ_I + (group * 16));
1506
1507 he_writel(he_dev, 0x0, G0_TBRQ_B_T + (group * 16));
1508 he_writel(he_dev, 0x0, G0_TBRQ_H + (group * 16));
1509 he_writel(he_dev, TBRQ_THRESH(0x1),
1510 G0_TBRQ_THRESH + (group * 16));
1511 he_writel(he_dev, 0x0, G0_TBRQ_S + (group * 16));
1512 }
1513
1514 /* host status page */
1515
1516 he_dev->hsp = pci_alloc_consistent(he_dev->pci_dev,
1517 sizeof(struct he_hsp), &he_dev->hsp_phys);
1518 if (he_dev->hsp == NULL) {
1519 hprintk("failed to allocate host status page\n");
1520 return -ENOMEM;
1521 }
1522 memset(he_dev->hsp, 0, sizeof(struct he_hsp));
1523 he_writel(he_dev, he_dev->hsp_phys, HSP_BA);
1524
1525 /* initialize framer */
1526
1527 #ifdef CONFIG_ATM_HE_USE_SUNI
1528 if (he_isMM(he_dev))
1529 suni_init(he_dev->atm_dev);
1530 if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->start)
1531 he_dev->atm_dev->phy->start(he_dev->atm_dev);
1532 #endif /* CONFIG_ATM_HE_USE_SUNI */
1533
1534 if (sdh) {
1535 /* this really should be in suni.c but for now... */
1536 int val;
1537
1538 val = he_phy_get(he_dev->atm_dev, SUNI_TPOP_APM);
1539 val = (val & ~SUNI_TPOP_APM_S) | (SUNI_TPOP_S_SDH << SUNI_TPOP_APM_S_SHIFT);
1540 he_phy_put(he_dev->atm_dev, val, SUNI_TPOP_APM);
1541 he_phy_put(he_dev->atm_dev, SUNI_TACP_IUCHP_CLP, SUNI_TACP_IUCHP);
1542 }
1543
1544 /* 5.1.12 enable transmit and receive */
1545
1546 reg = he_readl_mbox(he_dev, CS_ERCTL0);
1547 reg |= TX_ENABLE|ER_ENABLE;
1548 he_writel_mbox(he_dev, reg, CS_ERCTL0);
1549
1550 reg = he_readl(he_dev, RC_CONFIG);
1551 reg |= RX_ENABLE;
1552 he_writel(he_dev, reg, RC_CONFIG);
1553
1554 for (i = 0; i < HE_NUM_CS_STPER; ++i) {
1555 he_dev->cs_stper[i].inuse = 0;
1556 he_dev->cs_stper[i].pcr = -1;
1557 }
1558 he_dev->total_bw = 0;
1559
1560
1561 /* atm linux initialization */
1562
1563 he_dev->atm_dev->ci_range.vpi_bits = he_dev->vpibits;
1564 he_dev->atm_dev->ci_range.vci_bits = he_dev->vcibits;
1565
1566 he_dev->irq_peak = 0;
1567 he_dev->rbrq_peak = 0;
1568 he_dev->rbpl_peak = 0;
1569 he_dev->tbrq_peak = 0;
1570
1571 HPRINTK("hell bent for leather!\n");
1572
1573 return 0;
1574 }
1575
1576 static void
1577 he_stop(struct he_dev *he_dev)
1578 {
1579 u16 command;
1580 u32 gen_cntl_0, reg;
1581 struct pci_dev *pci_dev;
1582
1583 pci_dev = he_dev->pci_dev;
1584
1585 /* disable interrupts */
1586
1587 if (he_dev->membase) {
1588 pci_read_config_dword(pci_dev, GEN_CNTL_0, &gen_cntl_0);
1589 gen_cntl_0 &= ~(INT_PROC_ENBL | INIT_ENB);
1590 pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0);
1591
1592 tasklet_disable(&he_dev->tasklet);
1593
1594 /* disable recv and transmit */
1595
1596 reg = he_readl_mbox(he_dev, CS_ERCTL0);
1597 reg &= ~(TX_ENABLE|ER_ENABLE);
1598 he_writel_mbox(he_dev, reg, CS_ERCTL0);
1599
1600 reg = he_readl(he_dev, RC_CONFIG);
1601 reg &= ~(RX_ENABLE);
1602 he_writel(he_dev, reg, RC_CONFIG);
1603 }
1604
1605 #ifdef CONFIG_ATM_HE_USE_SUNI
1606 if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->stop)
1607 he_dev->atm_dev->phy->stop(he_dev->atm_dev);
1608 #endif /* CONFIG_ATM_HE_USE_SUNI */
1609
1610 if (he_dev->irq)
1611 free_irq(he_dev->irq, he_dev);
1612
1613 if (he_dev->irq_base)
1614 pci_free_consistent(he_dev->pci_dev, (CONFIG_IRQ_SIZE+1)
1615 * sizeof(struct he_irq), he_dev->irq_base, he_dev->irq_phys);
1616
1617 if (he_dev->hsp)
1618 pci_free_consistent(he_dev->pci_dev, sizeof(struct he_hsp),
1619 he_dev->hsp, he_dev->hsp_phys);
1620
1621 if (he_dev->rbpl_base) {
1622 int i;
1623
1624 for (i = 0; i < CONFIG_RBPL_SIZE; ++i) {
1625 void *cpuaddr = he_dev->rbpl_virt[i].virt;
1626 dma_addr_t dma_handle = he_dev->rbpl_base[i].phys;
1627
1628 pci_pool_free(he_dev->rbpl_pool, cpuaddr, dma_handle);
1629 }
1630 pci_free_consistent(he_dev->pci_dev, CONFIG_RBPL_SIZE
1631 * sizeof(struct he_rbp), he_dev->rbpl_base, he_dev->rbpl_phys);
1632 }
1633
1634 if (he_dev->rbpl_pool)
1635 pci_pool_destroy(he_dev->rbpl_pool);
1636
1637 if (he_dev->rbps_base) {
1638 int i;
1639
1640 for (i = 0; i < CONFIG_RBPS_SIZE; ++i) {
1641 void *cpuaddr = he_dev->rbps_virt[i].virt;
1642 dma_addr_t dma_handle = he_dev->rbps_base[i].phys;
1643
1644 pci_pool_free(he_dev->rbps_pool, cpuaddr, dma_handle);
1645 }
1646 pci_free_consistent(he_dev->pci_dev, CONFIG_RBPS_SIZE
1647 * sizeof(struct he_rbp), he_dev->rbps_base, he_dev->rbps_phys);
1648 }
1649
1650 if (he_dev->rbps_pool)
1651 pci_pool_destroy(he_dev->rbps_pool);
1652
1653 if (he_dev->rbrq_base)
1654 pci_free_consistent(he_dev->pci_dev, CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq),
1655 he_dev->rbrq_base, he_dev->rbrq_phys);
1656
1657 if (he_dev->tbrq_base)
1658 pci_free_consistent(he_dev->pci_dev, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq),
1659 he_dev->tbrq_base, he_dev->tbrq_phys);
1660
1661 if (he_dev->tpdrq_base)
1662 pci_free_consistent(he_dev->pci_dev, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq),
1663 he_dev->tpdrq_base, he_dev->tpdrq_phys);
1664
1665 if (he_dev->tpd_pool)
1666 pci_pool_destroy(he_dev->tpd_pool);
1667
1668 if (he_dev->pci_dev) {
1669 pci_read_config_word(he_dev->pci_dev, PCI_COMMAND, &command);
1670 command &= ~(PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
1671 pci_write_config_word(he_dev->pci_dev, PCI_COMMAND, command);
1672 }
1673
1674 if (he_dev->membase)
1675 iounmap(he_dev->membase);
1676 }
1677
1678 static struct he_tpd *
1679 __alloc_tpd(struct he_dev *he_dev)
1680 {
1681 struct he_tpd *tpd;
1682 dma_addr_t dma_handle;
1683
1684 tpd = pci_pool_alloc(he_dev->tpd_pool, GFP_ATOMIC|GFP_DMA, &dma_handle);
1685 if (tpd == NULL)
1686 return NULL;
1687
1688 tpd->status = TPD_ADDR(dma_handle);
1689 tpd->reserved = 0;
1690 tpd->iovec[0].addr = 0; tpd->iovec[0].len = 0;
1691 tpd->iovec[1].addr = 0; tpd->iovec[1].len = 0;
1692 tpd->iovec[2].addr = 0; tpd->iovec[2].len = 0;
1693
1694 return tpd;
1695 }
1696
1697 #define AAL5_LEN(buf,len) \
1698 ((((unsigned char *)(buf))[(len)-6] << 8) | \
1699 (((unsigned char *)(buf))[(len)-5]))
1700
1701 /* 2.10.1.2 receive
1702 *
1703 * aal5 packets can optionally return the tcp checksum in the lower
1704 * 16 bits of the crc (RSR0_TCP_CKSUM)
1705 */
1706
1707 #define TCP_CKSUM(buf,len) \
1708 ((((unsigned char *)(buf))[(len)-2] << 8) | \
1709 (((unsigned char *)(buf))[(len-1)]))
1710
1711 static int
1712 he_service_rbrq(struct he_dev *he_dev, int group)
1713 {
1714 struct he_rbrq *rbrq_tail = (struct he_rbrq *)
1715 ((unsigned long)he_dev->rbrq_base |
1716 he_dev->hsp->group[group].rbrq_tail);
1717 struct he_rbp *rbp = NULL;
1718 unsigned cid, lastcid = -1;
1719 unsigned buf_len = 0;
1720 struct sk_buff *skb;
1721 struct atm_vcc *vcc = NULL;
1722 struct he_vcc *he_vcc;
1723 struct he_iovec *iov;
1724 int pdus_assembled = 0;
1725 int updated = 0;
1726
1727 read_lock(&vcc_sklist_lock);
1728 while (he_dev->rbrq_head != rbrq_tail) {
1729 ++updated;
1730
1731 HPRINTK("%p rbrq%d 0x%x len=%d cid=0x%x %s%s%s%s%s%s\n",
1732 he_dev->rbrq_head, group,
1733 RBRQ_ADDR(he_dev->rbrq_head),
1734 RBRQ_BUFLEN(he_dev->rbrq_head),
1735 RBRQ_CID(he_dev->rbrq_head),
1736 RBRQ_CRC_ERR(he_dev->rbrq_head) ? " CRC_ERR" : "",
1737 RBRQ_LEN_ERR(he_dev->rbrq_head) ? " LEN_ERR" : "",
1738 RBRQ_END_PDU(he_dev->rbrq_head) ? " END_PDU" : "",
1739 RBRQ_AAL5_PROT(he_dev->rbrq_head) ? " AAL5_PROT" : "",
1740 RBRQ_CON_CLOSED(he_dev->rbrq_head) ? " CON_CLOSED" : "",
1741 RBRQ_HBUF_ERR(he_dev->rbrq_head) ? " HBUF_ERR" : "");
1742
1743 if (RBRQ_ADDR(he_dev->rbrq_head) & RBP_SMALLBUF)
1744 rbp = &he_dev->rbps_base[RBP_INDEX(RBRQ_ADDR(he_dev->rbrq_head))];
1745 else
1746 rbp = &he_dev->rbpl_base[RBP_INDEX(RBRQ_ADDR(he_dev->rbrq_head))];
1747
1748 buf_len = RBRQ_BUFLEN(he_dev->rbrq_head) * 4;
1749 cid = RBRQ_CID(he_dev->rbrq_head);
1750
1751 if (cid != lastcid)
1752 vcc = __find_vcc(he_dev, cid);
1753 lastcid = cid;
1754
1755 if (vcc == NULL) {
1756 hprintk("vcc == NULL (cid 0x%x)\n", cid);
1757 if (!RBRQ_HBUF_ERR(he_dev->rbrq_head))
1758 rbp->status &= ~RBP_LOANED;
1759
1760 goto next_rbrq_entry;
1761 }
1762
1763 he_vcc = HE_VCC(vcc);
1764 if (he_vcc == NULL) {
1765 hprintk("he_vcc == NULL (cid 0x%x)\n", cid);
1766 if (!RBRQ_HBUF_ERR(he_dev->rbrq_head))
1767 rbp->status &= ~RBP_LOANED;
1768 goto next_rbrq_entry;
1769 }
1770
1771 if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) {
1772 hprintk("HBUF_ERR! (cid 0x%x)\n", cid);
1773 atomic_inc(&vcc->stats->rx_drop);
1774 goto return_host_buffers;
1775 }
1776
1777 he_vcc->iov_tail->iov_base = RBRQ_ADDR(he_dev->rbrq_head);
1778 he_vcc->iov_tail->iov_len = buf_len;
1779 he_vcc->pdu_len += buf_len;
1780 ++he_vcc->iov_tail;
1781
1782 if (RBRQ_CON_CLOSED(he_dev->rbrq_head)) {
1783 lastcid = -1;
1784 HPRINTK("wake_up rx_waitq (cid 0x%x)\n", cid);
1785 wake_up(&he_vcc->rx_waitq);
1786 goto return_host_buffers;
1787 }
1788
1789 #ifdef notdef
1790 if ((he_vcc->iov_tail - he_vcc->iov_head) > HE_MAXIOV) {
1791 hprintk("iovec full! cid 0x%x\n", cid);
1792 goto return_host_buffers;
1793 }
1794 #endif
1795 if (!RBRQ_END_PDU(he_dev->rbrq_head))
1796 goto next_rbrq_entry;
1797
1798 if (RBRQ_LEN_ERR(he_dev->rbrq_head)
1799 || RBRQ_CRC_ERR(he_dev->rbrq_head)) {
1800 HPRINTK("%s%s (%d.%d)\n",
1801 RBRQ_CRC_ERR(he_dev->rbrq_head)
1802 ? "CRC_ERR " : "",
1803 RBRQ_LEN_ERR(he_dev->rbrq_head)
1804 ? "LEN_ERR" : "",
1805 vcc->vpi, vcc->vci);
1806 atomic_inc(&vcc->stats->rx_err);
1807 goto return_host_buffers;
1808 }
1809
1810 skb = atm_alloc_charge(vcc, he_vcc->pdu_len + rx_skb_reserve,
1811 GFP_ATOMIC);
1812 if (!skb) {
1813 HPRINTK("charge failed (%d.%d)\n", vcc->vpi, vcc->vci);
1814 goto return_host_buffers;
1815 }
1816
1817 if (rx_skb_reserve > 0)
1818 skb_reserve(skb, rx_skb_reserve);
1819
1820 __net_timestamp(skb);
1821
1822 for (iov = he_vcc->iov_head;
1823 iov < he_vcc->iov_tail; ++iov) {
1824 if (iov->iov_base & RBP_SMALLBUF)
1825 memcpy(skb_put(skb, iov->iov_len),
1826 he_dev->rbps_virt[RBP_INDEX(iov->iov_base)].virt, iov->iov_len);
1827 else
1828 memcpy(skb_put(skb, iov->iov_len),
1829 he_dev->rbpl_virt[RBP_INDEX(iov->iov_base)].virt, iov->iov_len);
1830 }
1831
1832 switch (vcc->qos.aal) {
1833 case ATM_AAL0:
1834 /* 2.10.1.5 raw cell receive */
1835 skb->len = ATM_AAL0_SDU;
1836 skb_set_tail_pointer(skb, skb->len);
1837 break;
1838 case ATM_AAL5:
1839 /* 2.10.1.2 aal5 receive */
1840
1841 skb->len = AAL5_LEN(skb->data, he_vcc->pdu_len);
1842 skb_set_tail_pointer(skb, skb->len);
1843 #ifdef USE_CHECKSUM_HW
1844 if (vcc->vpi == 0 && vcc->vci >= ATM_NOT_RSV_VCI) {
1845 skb->ip_summed = CHECKSUM_COMPLETE;
1846 skb->csum = TCP_CKSUM(skb->data,
1847 he_vcc->pdu_len);
1848 }
1849 #endif
1850 break;
1851 }
1852
1853 #ifdef should_never_happen
1854 if (skb->len > vcc->qos.rxtp.max_sdu)
1855 hprintk("pdu_len (%d) > vcc->qos.rxtp.max_sdu (%d)! cid 0x%x\n", skb->len, vcc->qos.rxtp.max_sdu, cid);
1856 #endif
1857
1858 #ifdef notdef
1859 ATM_SKB(skb)->vcc = vcc;
1860 #endif
1861 spin_unlock(&he_dev->global_lock);
1862 vcc->push(vcc, skb);
1863 spin_lock(&he_dev->global_lock);
1864
1865 atomic_inc(&vcc->stats->rx);
1866
1867 return_host_buffers:
1868 ++pdus_assembled;
1869
1870 for (iov = he_vcc->iov_head;
1871 iov < he_vcc->iov_tail; ++iov) {
1872 if (iov->iov_base & RBP_SMALLBUF)
1873 rbp = &he_dev->rbps_base[RBP_INDEX(iov->iov_base)];
1874 else
1875 rbp = &he_dev->rbpl_base[RBP_INDEX(iov->iov_base)];
1876
1877 rbp->status &= ~RBP_LOANED;
1878 }
1879
1880 he_vcc->iov_tail = he_vcc->iov_head;
1881 he_vcc->pdu_len = 0;
1882
1883 next_rbrq_entry:
1884 he_dev->rbrq_head = (struct he_rbrq *)
1885 ((unsigned long) he_dev->rbrq_base |
1886 RBRQ_MASK(++he_dev->rbrq_head));
1887
1888 }
1889 read_unlock(&vcc_sklist_lock);
1890
1891 if (updated) {
1892 if (updated > he_dev->rbrq_peak)
1893 he_dev->rbrq_peak = updated;
1894
1895 he_writel(he_dev, RBRQ_MASK(he_dev->rbrq_head),
1896 G0_RBRQ_H + (group * 16));
1897 }
1898
1899 return pdus_assembled;
1900 }
1901
1902 static void
1903 he_service_tbrq(struct he_dev *he_dev, int group)
1904 {
1905 struct he_tbrq *tbrq_tail = (struct he_tbrq *)
1906 ((unsigned long)he_dev->tbrq_base |
1907 he_dev->hsp->group[group].tbrq_tail);
1908 struct he_tpd *tpd;
1909 int slot, updated = 0;
1910 struct he_tpd *__tpd;
1911
1912 /* 2.1.6 transmit buffer return queue */
1913
1914 while (he_dev->tbrq_head != tbrq_tail) {
1915 ++updated;
1916
1917 HPRINTK("tbrq%d 0x%x%s%s\n",
1918 group,
1919 TBRQ_TPD(he_dev->tbrq_head),
1920 TBRQ_EOS(he_dev->tbrq_head) ? " EOS" : "",
1921 TBRQ_MULTIPLE(he_dev->tbrq_head) ? " MULTIPLE" : "");
1922 tpd = NULL;
1923 list_for_each_entry(__tpd, &he_dev->outstanding_tpds, entry) {
1924 if (TPD_ADDR(__tpd->status) == TBRQ_TPD(he_dev->tbrq_head)) {
1925 tpd = __tpd;
1926 list_del(&__tpd->entry);
1927 break;
1928 }
1929 }
1930
1931 if (tpd == NULL) {
1932 hprintk("unable to locate tpd for dma buffer %x\n",
1933 TBRQ_TPD(he_dev->tbrq_head));
1934 goto next_tbrq_entry;
1935 }
1936
1937 if (TBRQ_EOS(he_dev->tbrq_head)) {
1938 HPRINTK("wake_up(tx_waitq) cid 0x%x\n",
1939 he_mkcid(he_dev, tpd->vcc->vpi, tpd->vcc->vci));
1940 if (tpd->vcc)
1941 wake_up(&HE_VCC(tpd->vcc)->tx_waitq);
1942
1943 goto next_tbrq_entry;
1944 }
1945
1946 for (slot = 0; slot < TPD_MAXIOV; ++slot) {
1947 if (tpd->iovec[slot].addr)
1948 pci_unmap_single(he_dev->pci_dev,
1949 tpd->iovec[slot].addr,
1950 tpd->iovec[slot].len & TPD_LEN_MASK,
1951 PCI_DMA_TODEVICE);
1952 if (tpd->iovec[slot].len & TPD_LST)
1953 break;
1954
1955 }
1956
1957 if (tpd->skb) { /* && !TBRQ_MULTIPLE(he_dev->tbrq_head) */
1958 if (tpd->vcc && tpd->vcc->pop)
1959 tpd->vcc->pop(tpd->vcc, tpd->skb);
1960 else
1961 dev_kfree_skb_any(tpd->skb);
1962 }
1963
1964 next_tbrq_entry:
1965 if (tpd)
1966 pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status));
1967 he_dev->tbrq_head = (struct he_tbrq *)
1968 ((unsigned long) he_dev->tbrq_base |
1969 TBRQ_MASK(++he_dev->tbrq_head));
1970 }
1971
1972 if (updated) {
1973 if (updated > he_dev->tbrq_peak)
1974 he_dev->tbrq_peak = updated;
1975
1976 he_writel(he_dev, TBRQ_MASK(he_dev->tbrq_head),
1977 G0_TBRQ_H + (group * 16));
1978 }
1979 }
1980
1981
1982 static void
1983 he_service_rbpl(struct he_dev *he_dev, int group)
1984 {
1985 struct he_rbp *newtail;
1986 struct he_rbp *rbpl_head;
1987 int moved = 0;
1988
1989 rbpl_head = (struct he_rbp *) ((unsigned long)he_dev->rbpl_base |
1990 RBPL_MASK(he_readl(he_dev, G0_RBPL_S)));
1991
1992 for (;;) {
1993 newtail = (struct he_rbp *) ((unsigned long)he_dev->rbpl_base |
1994 RBPL_MASK(he_dev->rbpl_tail+1));
1995
1996 /* table 3.42 -- rbpl_tail should never be set to rbpl_head */
1997 if ((newtail == rbpl_head) || (newtail->status & RBP_LOANED))
1998 break;
1999
2000 newtail->status |= RBP_LOANED;
2001 he_dev->rbpl_tail = newtail;
2002 ++moved;
2003 }
2004
2005 if (moved)
2006 he_writel(he_dev, RBPL_MASK(he_dev->rbpl_tail), G0_RBPL_T);
2007 }
2008
2009 static void
2010 he_service_rbps(struct he_dev *he_dev, int group)
2011 {
2012 struct he_rbp *newtail;
2013 struct he_rbp *rbps_head;
2014 int moved = 0;
2015
2016 rbps_head = (struct he_rbp *) ((unsigned long)he_dev->rbps_base |
2017 RBPS_MASK(he_readl(he_dev, G0_RBPS_S)));
2018
2019 for (;;) {
2020 newtail = (struct he_rbp *) ((unsigned long)he_dev->rbps_base |
2021 RBPS_MASK(he_dev->rbps_tail+1));
2022
2023 /* table 3.42 -- rbps_tail should never be set to rbps_head */
2024 if ((newtail == rbps_head) || (newtail->status & RBP_LOANED))
2025 break;
2026
2027 newtail->status |= RBP_LOANED;
2028 he_dev->rbps_tail = newtail;
2029 ++moved;
2030 }
2031
2032 if (moved)
2033 he_writel(he_dev, RBPS_MASK(he_dev->rbps_tail), G0_RBPS_T);
2034 }
2035
2036 static void
2037 he_tasklet(unsigned long data)
2038 {
2039 unsigned long flags;
2040 struct he_dev *he_dev = (struct he_dev *) data;
2041 int group, type;
2042 int updated = 0;
2043
2044 HPRINTK("tasklet (0x%lx)\n", data);
2045 spin_lock_irqsave(&he_dev->global_lock, flags);
2046
2047 while (he_dev->irq_head != he_dev->irq_tail) {
2048 ++updated;
2049
2050 type = ITYPE_TYPE(he_dev->irq_head->isw);
2051 group = ITYPE_GROUP(he_dev->irq_head->isw);
2052
2053 switch (type) {
2054 case ITYPE_RBRQ_THRESH:
2055 HPRINTK("rbrq%d threshold\n", group);
2056 /* fall through */
2057 case ITYPE_RBRQ_TIMER:
2058 if (he_service_rbrq(he_dev, group)) {
2059 he_service_rbpl(he_dev, group);
2060 he_service_rbps(he_dev, group);
2061 }
2062 break;
2063 case ITYPE_TBRQ_THRESH:
2064 HPRINTK("tbrq%d threshold\n", group);
2065 /* fall through */
2066 case ITYPE_TPD_COMPLETE:
2067 he_service_tbrq(he_dev, group);
2068 break;
2069 case ITYPE_RBPL_THRESH:
2070 he_service_rbpl(he_dev, group);
2071 break;
2072 case ITYPE_RBPS_THRESH:
2073 he_service_rbps(he_dev, group);
2074 break;
2075 case ITYPE_PHY:
2076 HPRINTK("phy interrupt\n");
2077 #ifdef CONFIG_ATM_HE_USE_SUNI
2078 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2079 if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->interrupt)
2080 he_dev->atm_dev->phy->interrupt(he_dev->atm_dev);
2081 spin_lock_irqsave(&he_dev->global_lock, flags);
2082 #endif
2083 break;
2084 case ITYPE_OTHER:
2085 switch (type|group) {
2086 case ITYPE_PARITY:
2087 hprintk("parity error\n");
2088 break;
2089 case ITYPE_ABORT:
2090 hprintk("abort 0x%x\n", he_readl(he_dev, ABORT_ADDR));
2091 break;
2092 }
2093 break;
2094 case ITYPE_TYPE(ITYPE_INVALID):
2095 /* see 8.1.1 -- check all queues */
2096
2097 HPRINTK("isw not updated 0x%x\n", he_dev->irq_head->isw);
2098
2099 he_service_rbrq(he_dev, 0);
2100 he_service_rbpl(he_dev, 0);
2101 he_service_rbps(he_dev, 0);
2102 he_service_tbrq(he_dev, 0);
2103 break;
2104 default:
2105 hprintk("bad isw 0x%x?\n", he_dev->irq_head->isw);
2106 }
2107
2108 he_dev->irq_head->isw = ITYPE_INVALID;
2109
2110 he_dev->irq_head = (struct he_irq *) NEXT_ENTRY(he_dev->irq_base, he_dev->irq_head, IRQ_MASK);
2111 }
2112
2113 if (updated) {
2114 if (updated > he_dev->irq_peak)
2115 he_dev->irq_peak = updated;
2116
2117 he_writel(he_dev,
2118 IRQ_SIZE(CONFIG_IRQ_SIZE) |
2119 IRQ_THRESH(CONFIG_IRQ_THRESH) |
2120 IRQ_TAIL(he_dev->irq_tail), IRQ0_HEAD);
2121 (void) he_readl(he_dev, INT_FIFO); /* 8.1.2 controller errata; flush posted writes */
2122 }
2123 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2124 }
2125
2126 static irqreturn_t
2127 he_irq_handler(int irq, void *dev_id)
2128 {
2129 unsigned long flags;
2130 struct he_dev *he_dev = (struct he_dev * )dev_id;
2131 int handled = 0;
2132
2133 if (he_dev == NULL)
2134 return IRQ_NONE;
2135
2136 spin_lock_irqsave(&he_dev->global_lock, flags);
2137
2138 he_dev->irq_tail = (struct he_irq *) (((unsigned long)he_dev->irq_base) |
2139 (*he_dev->irq_tailoffset << 2));
2140
2141 if (he_dev->irq_tail == he_dev->irq_head) {
2142 HPRINTK("tailoffset not updated?\n");
2143 he_dev->irq_tail = (struct he_irq *) ((unsigned long)he_dev->irq_base |
2144 ((he_readl(he_dev, IRQ0_BASE) & IRQ_MASK) << 2));
2145 (void) he_readl(he_dev, INT_FIFO); /* 8.1.2 controller errata */
2146 }
2147
2148 #ifdef DEBUG
2149 if (he_dev->irq_head == he_dev->irq_tail /* && !IRQ_PENDING */)
2150 hprintk("spurious (or shared) interrupt?\n");
2151 #endif
2152
2153 if (he_dev->irq_head != he_dev->irq_tail) {
2154 handled = 1;
2155 tasklet_schedule(&he_dev->tasklet);
2156 he_writel(he_dev, INT_CLEAR_A, INT_FIFO); /* clear interrupt */
2157 (void) he_readl(he_dev, INT_FIFO); /* flush posted writes */
2158 }
2159 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2160 return IRQ_RETVAL(handled);
2161
2162 }
2163
2164 static __inline__ void
2165 __enqueue_tpd(struct he_dev *he_dev, struct he_tpd *tpd, unsigned cid)
2166 {
2167 struct he_tpdrq *new_tail;
2168
2169 HPRINTK("tpdrq %p cid 0x%x -> tpdrq_tail %p\n",
2170 tpd, cid, he_dev->tpdrq_tail);
2171
2172 /* new_tail = he_dev->tpdrq_tail; */
2173 new_tail = (struct he_tpdrq *) ((unsigned long) he_dev->tpdrq_base |
2174 TPDRQ_MASK(he_dev->tpdrq_tail+1));
2175
2176 /*
2177 * check to see if we are about to set the tail == head
2178 * if true, update the head pointer from the adapter
2179 * to see if this is really the case (reading the queue
2180 * head for every enqueue would be unnecessarily slow)
2181 */
2182
2183 if (new_tail == he_dev->tpdrq_head) {
2184 he_dev->tpdrq_head = (struct he_tpdrq *)
2185 (((unsigned long)he_dev->tpdrq_base) |
2186 TPDRQ_MASK(he_readl(he_dev, TPDRQ_B_H)));
2187
2188 if (new_tail == he_dev->tpdrq_head) {
2189 int slot;
2190
2191 hprintk("tpdrq full (cid 0x%x)\n", cid);
2192 /*
2193 * FIXME
2194 * push tpd onto a transmit backlog queue
2195 * after service_tbrq, service the backlog
2196 * for now, we just drop the pdu
2197 */
2198 for (slot = 0; slot < TPD_MAXIOV; ++slot) {
2199 if (tpd->iovec[slot].addr)
2200 pci_unmap_single(he_dev->pci_dev,
2201 tpd->iovec[slot].addr,
2202 tpd->iovec[slot].len & TPD_LEN_MASK,
2203 PCI_DMA_TODEVICE);
2204 }
2205 if (tpd->skb) {
2206 if (tpd->vcc->pop)
2207 tpd->vcc->pop(tpd->vcc, tpd->skb);
2208 else
2209 dev_kfree_skb_any(tpd->skb);
2210 atomic_inc(&tpd->vcc->stats->tx_err);
2211 }
2212 pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status));
2213 return;
2214 }
2215 }
2216
2217 /* 2.1.5 transmit packet descriptor ready queue */
2218 list_add_tail(&tpd->entry, &he_dev->outstanding_tpds);
2219 he_dev->tpdrq_tail->tpd = TPD_ADDR(tpd->status);
2220 he_dev->tpdrq_tail->cid = cid;
2221 wmb();
2222
2223 he_dev->tpdrq_tail = new_tail;
2224
2225 he_writel(he_dev, TPDRQ_MASK(he_dev->tpdrq_tail), TPDRQ_T);
2226 (void) he_readl(he_dev, TPDRQ_T); /* flush posted writes */
2227 }
2228
2229 static int
2230 he_open(struct atm_vcc *vcc)
2231 {
2232 unsigned long flags;
2233 struct he_dev *he_dev = HE_DEV(vcc->dev);
2234 struct he_vcc *he_vcc;
2235 int err = 0;
2236 unsigned cid, rsr0, rsr1, rsr4, tsr0, tsr0_aal, tsr4, period, reg, clock;
2237 short vpi = vcc->vpi;
2238 int vci = vcc->vci;
2239
2240 if (vci == ATM_VCI_UNSPEC || vpi == ATM_VPI_UNSPEC)
2241 return 0;
2242
2243 HPRINTK("open vcc %p %d.%d\n", vcc, vpi, vci);
2244
2245 set_bit(ATM_VF_ADDR, &vcc->flags);
2246
2247 cid = he_mkcid(he_dev, vpi, vci);
2248
2249 he_vcc = kmalloc(sizeof(struct he_vcc), GFP_ATOMIC);
2250 if (he_vcc == NULL) {
2251 hprintk("unable to allocate he_vcc during open\n");
2252 return -ENOMEM;
2253 }
2254
2255 he_vcc->iov_tail = he_vcc->iov_head;
2256 he_vcc->pdu_len = 0;
2257 he_vcc->rc_index = -1;
2258
2259 init_waitqueue_head(&he_vcc->rx_waitq);
2260 init_waitqueue_head(&he_vcc->tx_waitq);
2261
2262 vcc->dev_data = he_vcc;
2263
2264 if (vcc->qos.txtp.traffic_class != ATM_NONE) {
2265 int pcr_goal;
2266
2267 pcr_goal = atm_pcr_goal(&vcc->qos.txtp);
2268 if (pcr_goal == 0)
2269 pcr_goal = he_dev->atm_dev->link_rate;
2270 if (pcr_goal < 0) /* means round down, technically */
2271 pcr_goal = -pcr_goal;
2272
2273 HPRINTK("open tx cid 0x%x pcr_goal %d\n", cid, pcr_goal);
2274
2275 switch (vcc->qos.aal) {
2276 case ATM_AAL5:
2277 tsr0_aal = TSR0_AAL5;
2278 tsr4 = TSR4_AAL5;
2279 break;
2280 case ATM_AAL0:
2281 tsr0_aal = TSR0_AAL0_SDU;
2282 tsr4 = TSR4_AAL0_SDU;
2283 break;
2284 default:
2285 err = -EINVAL;
2286 goto open_failed;
2287 }
2288
2289 spin_lock_irqsave(&he_dev->global_lock, flags);
2290 tsr0 = he_readl_tsr0(he_dev, cid);
2291 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2292
2293 if (TSR0_CONN_STATE(tsr0) != 0) {
2294 hprintk("cid 0x%x not idle (tsr0 = 0x%x)\n", cid, tsr0);
2295 err = -EBUSY;
2296 goto open_failed;
2297 }
2298
2299 switch (vcc->qos.txtp.traffic_class) {
2300 case ATM_UBR:
2301 /* 2.3.3.1 open connection ubr */
2302
2303 tsr0 = TSR0_UBR | TSR0_GROUP(0) | tsr0_aal |
2304 TSR0_USE_WMIN | TSR0_UPDATE_GER;
2305 break;
2306
2307 case ATM_CBR:
2308 /* 2.3.3.2 open connection cbr */
2309
2310 /* 8.2.3 cbr scheduler wrap problem -- limit to 90% total link rate */
2311 if ((he_dev->total_bw + pcr_goal)
2312 > (he_dev->atm_dev->link_rate * 9 / 10))
2313 {
2314 err = -EBUSY;
2315 goto open_failed;
2316 }
2317
2318 spin_lock_irqsave(&he_dev->global_lock, flags); /* also protects he_dev->cs_stper[] */
2319
2320 /* find an unused cs_stper register */
2321 for (reg = 0; reg < HE_NUM_CS_STPER; ++reg)
2322 if (he_dev->cs_stper[reg].inuse == 0 ||
2323 he_dev->cs_stper[reg].pcr == pcr_goal)
2324 break;
2325
2326 if (reg == HE_NUM_CS_STPER) {
2327 err = -EBUSY;
2328 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2329 goto open_failed;
2330 }
2331
2332 he_dev->total_bw += pcr_goal;
2333
2334 he_vcc->rc_index = reg;
2335 ++he_dev->cs_stper[reg].inuse;
2336 he_dev->cs_stper[reg].pcr = pcr_goal;
2337
2338 clock = he_is622(he_dev) ? 66667000 : 50000000;
2339 period = clock / pcr_goal;
2340
2341 HPRINTK("rc_index = %d period = %d\n",
2342 reg, period);
2343
2344 he_writel_mbox(he_dev, rate_to_atmf(period/2),
2345 CS_STPER0 + reg);
2346 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2347
2348 tsr0 = TSR0_CBR | TSR0_GROUP(0) | tsr0_aal |
2349 TSR0_RC_INDEX(reg);
2350
2351 break;
2352 default:
2353 err = -EINVAL;
2354 goto open_failed;
2355 }
2356
2357 spin_lock_irqsave(&he_dev->global_lock, flags);
2358
2359 he_writel_tsr0(he_dev, tsr0, cid);
2360 he_writel_tsr4(he_dev, tsr4 | 1, cid);
2361 he_writel_tsr1(he_dev, TSR1_MCR(rate_to_atmf(0)) |
2362 TSR1_PCR(rate_to_atmf(pcr_goal)), cid);
2363 he_writel_tsr2(he_dev, TSR2_ACR(rate_to_atmf(pcr_goal)), cid);
2364 he_writel_tsr9(he_dev, TSR9_OPEN_CONN, cid);
2365
2366 he_writel_tsr3(he_dev, 0x0, cid);
2367 he_writel_tsr5(he_dev, 0x0, cid);
2368 he_writel_tsr6(he_dev, 0x0, cid);
2369 he_writel_tsr7(he_dev, 0x0, cid);
2370 he_writel_tsr8(he_dev, 0x0, cid);
2371 he_writel_tsr10(he_dev, 0x0, cid);
2372 he_writel_tsr11(he_dev, 0x0, cid);
2373 he_writel_tsr12(he_dev, 0x0, cid);
2374 he_writel_tsr13(he_dev, 0x0, cid);
2375 he_writel_tsr14(he_dev, 0x0, cid);
2376 (void) he_readl_tsr0(he_dev, cid); /* flush posted writes */
2377 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2378 }
2379
2380 if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
2381 unsigned aal;
2382
2383 HPRINTK("open rx cid 0x%x (rx_waitq %p)\n", cid,
2384 &HE_VCC(vcc)->rx_waitq);
2385
2386 switch (vcc->qos.aal) {
2387 case ATM_AAL5:
2388 aal = RSR0_AAL5;
2389 break;
2390 case ATM_AAL0:
2391 aal = RSR0_RAWCELL;
2392 break;
2393 default:
2394 err = -EINVAL;
2395 goto open_failed;
2396 }
2397
2398 spin_lock_irqsave(&he_dev->global_lock, flags);
2399
2400 rsr0 = he_readl_rsr0(he_dev, cid);
2401 if (rsr0 & RSR0_OPEN_CONN) {
2402 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2403
2404 hprintk("cid 0x%x not idle (rsr0 = 0x%x)\n", cid, rsr0);
2405 err = -EBUSY;
2406 goto open_failed;
2407 }
2408
2409 rsr1 = RSR1_GROUP(0);
2410 rsr4 = RSR4_GROUP(0);
2411 rsr0 = vcc->qos.rxtp.traffic_class == ATM_UBR ?
2412 (RSR0_EPD_ENABLE|RSR0_PPD_ENABLE) : 0;
2413
2414 #ifdef USE_CHECKSUM_HW
2415 if (vpi == 0 && vci >= ATM_NOT_RSV_VCI)
2416 rsr0 |= RSR0_TCP_CKSUM;
2417 #endif
2418
2419 he_writel_rsr4(he_dev, rsr4, cid);
2420 he_writel_rsr1(he_dev, rsr1, cid);
2421 /* 5.1.11 last parameter initialized should be
2422 the open/closed indication in rsr0 */
2423 he_writel_rsr0(he_dev,
2424 rsr0 | RSR0_START_PDU | RSR0_OPEN_CONN | aal, cid);
2425 (void) he_readl_rsr0(he_dev, cid); /* flush posted writes */
2426
2427 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2428 }
2429
2430 open_failed:
2431
2432 if (err) {
2433 kfree(he_vcc);
2434 clear_bit(ATM_VF_ADDR, &vcc->flags);
2435 }
2436 else
2437 set_bit(ATM_VF_READY, &vcc->flags);
2438
2439 return err;
2440 }
2441
2442 static void
2443 he_close(struct atm_vcc *vcc)
2444 {
2445 unsigned long flags;
2446 DECLARE_WAITQUEUE(wait, current);
2447 struct he_dev *he_dev = HE_DEV(vcc->dev);
2448 struct he_tpd *tpd;
2449 unsigned cid;
2450 struct he_vcc *he_vcc = HE_VCC(vcc);
2451 #define MAX_RETRY 30
2452 int retry = 0, sleep = 1, tx_inuse;
2453
2454 HPRINTK("close vcc %p %d.%d\n", vcc, vcc->vpi, vcc->vci);
2455
2456 clear_bit(ATM_VF_READY, &vcc->flags);
2457 cid = he_mkcid(he_dev, vcc->vpi, vcc->vci);
2458
2459 if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
2460 int timeout;
2461
2462 HPRINTK("close rx cid 0x%x\n", cid);
2463
2464 /* 2.7.2.2 close receive operation */
2465
2466 /* wait for previous close (if any) to finish */
2467
2468 spin_lock_irqsave(&he_dev->global_lock, flags);
2469 while (he_readl(he_dev, RCC_STAT) & RCC_BUSY) {
2470 HPRINTK("close cid 0x%x RCC_BUSY\n", cid);
2471 udelay(250);
2472 }
2473
2474 set_current_state(TASK_UNINTERRUPTIBLE);
2475 add_wait_queue(&he_vcc->rx_waitq, &wait);
2476
2477 he_writel_rsr0(he_dev, RSR0_CLOSE_CONN, cid);
2478 (void) he_readl_rsr0(he_dev, cid); /* flush posted writes */
2479 he_writel_mbox(he_dev, cid, RXCON_CLOSE);
2480 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2481
2482 timeout = schedule_timeout(30*HZ);
2483
2484 remove_wait_queue(&he_vcc->rx_waitq, &wait);
2485 set_current_state(TASK_RUNNING);
2486
2487 if (timeout == 0)
2488 hprintk("close rx timeout cid 0x%x\n", cid);
2489
2490 HPRINTK("close rx cid 0x%x complete\n", cid);
2491
2492 }
2493
2494 if (vcc->qos.txtp.traffic_class != ATM_NONE) {
2495 volatile unsigned tsr4, tsr0;
2496 int timeout;
2497
2498 HPRINTK("close tx cid 0x%x\n", cid);
2499
2500 /* 2.1.2
2501 *
2502 * ... the host must first stop queueing packets to the TPDRQ
2503 * on the connection to be closed, then wait for all outstanding
2504 * packets to be transmitted and their buffers returned to the
2505 * TBRQ. When the last packet on the connection arrives in the
2506 * TBRQ, the host issues the close command to the adapter.
2507 */
2508
2509 while (((tx_inuse = atomic_read(&sk_atm(vcc)->sk_wmem_alloc)) > 1) &&
2510 (retry < MAX_RETRY)) {
2511 msleep(sleep);
2512 if (sleep < 250)
2513 sleep = sleep * 2;
2514
2515 ++retry;
2516 }
2517
2518 if (tx_inuse > 1)
2519 hprintk("close tx cid 0x%x tx_inuse = %d\n", cid, tx_inuse);
2520
2521 /* 2.3.1.1 generic close operations with flush */
2522
2523 spin_lock_irqsave(&he_dev->global_lock, flags);
2524 he_writel_tsr4_upper(he_dev, TSR4_FLUSH_CONN, cid);
2525 /* also clears TSR4_SESSION_ENDED */
2526
2527 switch (vcc->qos.txtp.traffic_class) {
2528 case ATM_UBR:
2529 he_writel_tsr1(he_dev,
2530 TSR1_MCR(rate_to_atmf(200000))
2531 | TSR1_PCR(0), cid);
2532 break;
2533 case ATM_CBR:
2534 he_writel_tsr14_upper(he_dev, TSR14_DELETE, cid);
2535 break;
2536 }
2537 (void) he_readl_tsr4(he_dev, cid); /* flush posted writes */
2538
2539 tpd = __alloc_tpd(he_dev);
2540 if (tpd == NULL) {
2541 hprintk("close tx he_alloc_tpd failed cid 0x%x\n", cid);
2542 goto close_tx_incomplete;
2543 }
2544 tpd->status |= TPD_EOS | TPD_INT;
2545 tpd->skb = NULL;
2546 tpd->vcc = vcc;
2547 wmb();
2548
2549 set_current_state(TASK_UNINTERRUPTIBLE);
2550 add_wait_queue(&he_vcc->tx_waitq, &wait);
2551 __enqueue_tpd(he_dev, tpd, cid);
2552 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2553
2554 timeout = schedule_timeout(30*HZ);
2555
2556 remove_wait_queue(&he_vcc->tx_waitq, &wait);
2557 set_current_state(TASK_RUNNING);
2558
2559 spin_lock_irqsave(&he_dev->global_lock, flags);
2560
2561 if (timeout == 0) {
2562 hprintk("close tx timeout cid 0x%x\n", cid);
2563 goto close_tx_incomplete;
2564 }
2565
2566 while (!((tsr4 = he_readl_tsr4(he_dev, cid)) & TSR4_SESSION_ENDED)) {
2567 HPRINTK("close tx cid 0x%x !TSR4_SESSION_ENDED (tsr4 = 0x%x)\n", cid, tsr4);
2568 udelay(250);
2569 }
2570
2571 while (TSR0_CONN_STATE(tsr0 = he_readl_tsr0(he_dev, cid)) != 0) {
2572 HPRINTK("close tx cid 0x%x TSR0_CONN_STATE != 0 (tsr0 = 0x%x)\n", cid, tsr0);
2573 udelay(250);
2574 }
2575
2576 close_tx_incomplete:
2577
2578 if (vcc->qos.txtp.traffic_class == ATM_CBR) {
2579 int reg = he_vcc->rc_index;
2580
2581 HPRINTK("cs_stper reg = %d\n", reg);
2582
2583 if (he_dev->cs_stper[reg].inuse == 0)
2584 hprintk("cs_stper[%d].inuse = 0!\n", reg);
2585 else
2586 --he_dev->cs_stper[reg].inuse;
2587
2588 he_dev->total_bw -= he_dev->cs_stper[reg].pcr;
2589 }
2590 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2591
2592 HPRINTK("close tx cid 0x%x complete\n", cid);
2593 }
2594
2595 kfree(he_vcc);
2596
2597 clear_bit(ATM_VF_ADDR, &vcc->flags);
2598 }
2599
2600 static int
2601 he_send(struct atm_vcc *vcc, struct sk_buff *skb)
2602 {
2603 unsigned long flags;
2604 struct he_dev *he_dev = HE_DEV(vcc->dev);
2605 unsigned cid = he_mkcid(he_dev, vcc->vpi, vcc->vci);
2606 struct he_tpd *tpd;
2607 #ifdef USE_SCATTERGATHER
2608 int i, slot = 0;
2609 #endif
2610
2611 #define HE_TPD_BUFSIZE 0xffff
2612
2613 HPRINTK("send %d.%d\n", vcc->vpi, vcc->vci);
2614
2615 if ((skb->len > HE_TPD_BUFSIZE) ||
2616 ((vcc->qos.aal == ATM_AAL0) && (skb->len != ATM_AAL0_SDU))) {
2617 hprintk("buffer too large (or small) -- %d bytes\n", skb->len );
2618 if (vcc->pop)
2619 vcc->pop(vcc, skb);
2620 else
2621 dev_kfree_skb_any(skb);
2622 atomic_inc(&vcc->stats->tx_err);
2623 return -EINVAL;
2624 }
2625
2626 #ifndef USE_SCATTERGATHER
2627 if (skb_shinfo(skb)->nr_frags) {
2628 hprintk("no scatter/gather support\n");
2629 if (vcc->pop)
2630 vcc->pop(vcc, skb);
2631 else
2632 dev_kfree_skb_any(skb);
2633 atomic_inc(&vcc->stats->tx_err);
2634 return -EINVAL;
2635 }
2636 #endif
2637 spin_lock_irqsave(&he_dev->global_lock, flags);
2638
2639 tpd = __alloc_tpd(he_dev);
2640 if (tpd == NULL) {
2641 if (vcc->pop)
2642 vcc->pop(vcc, skb);
2643 else
2644 dev_kfree_skb_any(skb);
2645 atomic_inc(&vcc->stats->tx_err);
2646 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2647 return -ENOMEM;
2648 }
2649
2650 if (vcc->qos.aal == ATM_AAL5)
2651 tpd->status |= TPD_CELLTYPE(TPD_USERCELL);
2652 else {
2653 char *pti_clp = (void *) (skb->data + 3);
2654 int clp, pti;
2655
2656 pti = (*pti_clp & ATM_HDR_PTI_MASK) >> ATM_HDR_PTI_SHIFT;
2657 clp = (*pti_clp & ATM_HDR_CLP);
2658 tpd->status |= TPD_CELLTYPE(pti);
2659 if (clp)
2660 tpd->status |= TPD_CLP;
2661
2662 skb_pull(skb, ATM_AAL0_SDU - ATM_CELL_PAYLOAD);
2663 }
2664
2665 #ifdef USE_SCATTERGATHER
2666 tpd->iovec[slot].addr = pci_map_single(he_dev->pci_dev, skb->data,
2667 skb_headlen(skb), PCI_DMA_TODEVICE);
2668 tpd->iovec[slot].len = skb_headlen(skb);
2669 ++slot;
2670
2671 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2672 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2673
2674 if (slot == TPD_MAXIOV) { /* queue tpd; start new tpd */
2675 tpd->vcc = vcc;
2676 tpd->skb = NULL; /* not the last fragment
2677 so dont ->push() yet */
2678 wmb();
2679
2680 __enqueue_tpd(he_dev, tpd, cid);
2681 tpd = __alloc_tpd(he_dev);
2682 if (tpd == NULL) {
2683 if (vcc->pop)
2684 vcc->pop(vcc, skb);
2685 else
2686 dev_kfree_skb_any(skb);
2687 atomic_inc(&vcc->stats->tx_err);
2688 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2689 return -ENOMEM;
2690 }
2691 tpd->status |= TPD_USERCELL;
2692 slot = 0;
2693 }
2694
2695 tpd->iovec[slot].addr = pci_map_single(he_dev->pci_dev,
2696 (void *) page_address(frag->page) + frag->page_offset,
2697 frag->size, PCI_DMA_TODEVICE);
2698 tpd->iovec[slot].len = frag->size;
2699 ++slot;
2700
2701 }
2702
2703 tpd->iovec[slot - 1].len |= TPD_LST;
2704 #else
2705 tpd->address0 = pci_map_single(he_dev->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
2706 tpd->length0 = skb->len | TPD_LST;
2707 #endif
2708 tpd->status |= TPD_INT;
2709
2710 tpd->vcc = vcc;
2711 tpd->skb = skb;
2712 wmb();
2713 ATM_SKB(skb)->vcc = vcc;
2714
2715 __enqueue_tpd(he_dev, tpd, cid);
2716 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2717
2718 atomic_inc(&vcc->stats->tx);
2719
2720 return 0;
2721 }
2722
2723 static int
2724 he_ioctl(struct atm_dev *atm_dev, unsigned int cmd, void __user *arg)
2725 {
2726 unsigned long flags;
2727 struct he_dev *he_dev = HE_DEV(atm_dev);
2728 struct he_ioctl_reg reg;
2729 int err = 0;
2730
2731 switch (cmd) {
2732 case HE_GET_REG:
2733 if (!capable(CAP_NET_ADMIN))
2734 return -EPERM;
2735
2736 if (copy_from_user(&reg, arg,
2737 sizeof(struct he_ioctl_reg)))
2738 return -EFAULT;
2739
2740 spin_lock_irqsave(&he_dev->global_lock, flags);
2741 switch (reg.type) {
2742 case HE_REGTYPE_PCI:
2743 if (reg.addr >= HE_REGMAP_SIZE) {
2744 err = -EINVAL;
2745 break;
2746 }
2747
2748 reg.val = he_readl(he_dev, reg.addr);
2749 break;
2750 case HE_REGTYPE_RCM:
2751 reg.val =
2752 he_readl_rcm(he_dev, reg.addr);
2753 break;
2754 case HE_REGTYPE_TCM:
2755 reg.val =
2756 he_readl_tcm(he_dev, reg.addr);
2757 break;
2758 case HE_REGTYPE_MBOX:
2759 reg.val =
2760 he_readl_mbox(he_dev, reg.addr);
2761 break;
2762 default:
2763 err = -EINVAL;
2764 break;
2765 }
2766 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2767 if (err == 0)
2768 if (copy_to_user(arg, &reg,
2769 sizeof(struct he_ioctl_reg)))
2770 return -EFAULT;
2771 break;
2772 default:
2773 #ifdef CONFIG_ATM_HE_USE_SUNI
2774 if (atm_dev->phy && atm_dev->phy->ioctl)
2775 err = atm_dev->phy->ioctl(atm_dev, cmd, arg);
2776 #else /* CONFIG_ATM_HE_USE_SUNI */
2777 err = -EINVAL;
2778 #endif /* CONFIG_ATM_HE_USE_SUNI */
2779 break;
2780 }
2781
2782 return err;
2783 }
2784
2785 static void
2786 he_phy_put(struct atm_dev *atm_dev, unsigned char val, unsigned long addr)
2787 {
2788 unsigned long flags;
2789 struct he_dev *he_dev = HE_DEV(atm_dev);
2790
2791 HPRINTK("phy_put(val 0x%x, addr 0x%lx)\n", val, addr);
2792
2793 spin_lock_irqsave(&he_dev->global_lock, flags);
2794 he_writel(he_dev, val, FRAMER + (addr*4));
2795 (void) he_readl(he_dev, FRAMER + (addr*4)); /* flush posted writes */
2796 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2797 }
2798
2799
2800 static unsigned char
2801 he_phy_get(struct atm_dev *atm_dev, unsigned long addr)
2802 {
2803 unsigned long flags;
2804 struct he_dev *he_dev = HE_DEV(atm_dev);
2805 unsigned reg;
2806
2807 spin_lock_irqsave(&he_dev->global_lock, flags);
2808 reg = he_readl(he_dev, FRAMER + (addr*4));
2809 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2810
2811 HPRINTK("phy_get(addr 0x%lx) =0x%x\n", addr, reg);
2812 return reg;
2813 }
2814
2815 static int
2816 he_proc_read(struct atm_dev *dev, loff_t *pos, char *page)
2817 {
2818 unsigned long flags;
2819 struct he_dev *he_dev = HE_DEV(dev);
2820 int left, i;
2821 #ifdef notdef
2822 struct he_rbrq *rbrq_tail;
2823 struct he_tpdrq *tpdrq_head;
2824 int rbpl_head, rbpl_tail;
2825 #endif
2826 static long mcc = 0, oec = 0, dcc = 0, cec = 0;
2827
2828
2829 left = *pos;
2830 if (!left--)
2831 return sprintf(page, "ATM he driver\n");
2832
2833 if (!left--)
2834 return sprintf(page, "%s%s\n\n",
2835 he_dev->prod_id, he_dev->media & 0x40 ? "SM" : "MM");
2836
2837 if (!left--)
2838 return sprintf(page, "Mismatched Cells VPI/VCI Not Open Dropped Cells RCM Dropped Cells\n");
2839
2840 spin_lock_irqsave(&he_dev->global_lock, flags);
2841 mcc += he_readl(he_dev, MCC);
2842 oec += he_readl(he_dev, OEC);
2843 dcc += he_readl(he_dev, DCC);
2844 cec += he_readl(he_dev, CEC);
2845 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2846
2847 if (!left--)
2848 return sprintf(page, "%16ld %16ld %13ld %17ld\n\n",
2849 mcc, oec, dcc, cec);
2850
2851 if (!left--)
2852 return sprintf(page, "irq_size = %d inuse = ? peak = %d\n",
2853 CONFIG_IRQ_SIZE, he_dev->irq_peak);
2854
2855 if (!left--)
2856 return sprintf(page, "tpdrq_size = %d inuse = ?\n",
2857 CONFIG_TPDRQ_SIZE);
2858
2859 if (!left--)
2860 return sprintf(page, "rbrq_size = %d inuse = ? peak = %d\n",
2861 CONFIG_RBRQ_SIZE, he_dev->rbrq_peak);
2862
2863 if (!left--)
2864 return sprintf(page, "tbrq_size = %d peak = %d\n",
2865 CONFIG_TBRQ_SIZE, he_dev->tbrq_peak);
2866
2867
2868 #ifdef notdef
2869 rbpl_head = RBPL_MASK(he_readl(he_dev, G0_RBPL_S));
2870 rbpl_tail = RBPL_MASK(he_readl(he_dev, G0_RBPL_T));
2871
2872 inuse = rbpl_head - rbpl_tail;
2873 if (inuse < 0)
2874 inuse += CONFIG_RBPL_SIZE * sizeof(struct he_rbp);
2875 inuse /= sizeof(struct he_rbp);
2876
2877 if (!left--)
2878 return sprintf(page, "rbpl_size = %d inuse = %d\n\n",
2879 CONFIG_RBPL_SIZE, inuse);
2880 #endif
2881
2882 if (!left--)
2883 return sprintf(page, "rate controller periods (cbr)\n pcr #vc\n");
2884
2885 for (i = 0; i < HE_NUM_CS_STPER; ++i)
2886 if (!left--)
2887 return sprintf(page, "cs_stper%-2d %8ld %3d\n", i,
2888 he_dev->cs_stper[i].pcr,
2889 he_dev->cs_stper[i].inuse);
2890
2891 if (!left--)
2892 return sprintf(page, "total bw (cbr): %d (limit %d)\n",
2893 he_dev->total_bw, he_dev->atm_dev->link_rate * 10 / 9);
2894
2895 return 0;
2896 }
2897
2898 /* eeprom routines -- see 4.7 */
2899
2900 static u8 read_prom_byte(struct he_dev *he_dev, int addr)
2901 {
2902 u32 val = 0, tmp_read = 0;
2903 int i, j = 0;
2904 u8 byte_read = 0;
2905
2906 val = readl(he_dev->membase + HOST_CNTL);
2907 val &= 0xFFFFE0FF;
2908
2909 /* Turn on write enable */
2910 val |= 0x800;
2911 he_writel(he_dev, val, HOST_CNTL);
2912
2913 /* Send READ instruction */
2914 for (i = 0; i < ARRAY_SIZE(readtab); i++) {
2915 he_writel(he_dev, val | readtab[i], HOST_CNTL);
2916 udelay(EEPROM_DELAY);
2917 }
2918
2919 /* Next, we need to send the byte address to read from */
2920 for (i = 7; i >= 0; i--) {
2921 he_writel(he_dev, val | clocktab[j++] | (((addr >> i) & 1) << 9), HOST_CNTL);
2922 udelay(EEPROM_DELAY);
2923 he_writel(he_dev, val | clocktab[j++] | (((addr >> i) & 1) << 9), HOST_CNTL);
2924 udelay(EEPROM_DELAY);
2925 }
2926
2927 j = 0;
2928
2929 val &= 0xFFFFF7FF; /* Turn off write enable */
2930 he_writel(he_dev, val, HOST_CNTL);
2931
2932 /* Now, we can read data from the EEPROM by clocking it in */
2933 for (i = 7; i >= 0; i--) {
2934 he_writel(he_dev, val | clocktab[j++], HOST_CNTL);
2935 udelay(EEPROM_DELAY);
2936 tmp_read = he_readl(he_dev, HOST_CNTL);
2937 byte_read |= (unsigned char)
2938 ((tmp_read & ID_DOUT) >> ID_DOFFSET << i);
2939 he_writel(he_dev, val | clocktab[j++], HOST_CNTL);
2940 udelay(EEPROM_DELAY);
2941 }
2942
2943 he_writel(he_dev, val | ID_CS, HOST_CNTL);
2944 udelay(EEPROM_DELAY);
2945
2946 return byte_read;
2947 }
2948
2949 MODULE_LICENSE("GPL");
2950 MODULE_AUTHOR("chas williams <chas@cmf.nrl.navy.mil>");
2951 MODULE_DESCRIPTION("ForeRunnerHE ATM Adapter driver");
2952 module_param(disable64, bool, 0);
2953 MODULE_PARM_DESC(disable64, "disable 64-bit pci bus transfers");
2954 module_param(nvpibits, short, 0);
2955 MODULE_PARM_DESC(nvpibits, "numbers of bits for vpi (default 0)");
2956 module_param(nvcibits, short, 0);
2957 MODULE_PARM_DESC(nvcibits, "numbers of bits for vci (default 12)");
2958 module_param(rx_skb_reserve, short, 0);
2959 MODULE_PARM_DESC(rx_skb_reserve, "padding for receive skb (default 16)");
2960 module_param(irq_coalesce, bool, 0);
2961 MODULE_PARM_DESC(irq_coalesce, "use interrupt coalescing (default 1)");
2962 module_param(sdh, bool, 0);
2963 MODULE_PARM_DESC(sdh, "use SDH framing (default 0)");
2964
2965 static struct pci_device_id he_pci_tbl[] = {
2966 { PCI_VENDOR_ID_FORE, PCI_DEVICE_ID_FORE_HE, PCI_ANY_ID, PCI_ANY_ID,
2967 0, 0, 0 },
2968 { 0, }
2969 };
2970
2971 MODULE_DEVICE_TABLE(pci, he_pci_tbl);
2972
2973 static struct pci_driver he_driver = {
2974 .name = "he",
2975 .probe = he_init_one,
2976 .remove = __devexit_p(he_remove_one),
2977 .id_table = he_pci_tbl,
2978 };
2979
2980 static int __init he_init(void)
2981 {
2982 return pci_register_driver(&he_driver);
2983 }
2984
2985 static void __exit he_cleanup(void)
2986 {
2987 pci_unregister_driver(&he_driver);
2988 }
2989
2990 module_init(he_init);
2991 module_exit(he_cleanup);
Linux 2.6 libata-dev (mirror)