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pci-acpi: remove unused variable in __pci_osc_support_set
[linux-2.6/mini2440.git] / drivers / atm / he.c
blobffc4a5a419465da6e749a084926b21c69fc2a50b
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 <asm/io.h>
71 #include <asm/byteorder.h>
72 #include <asm/uaccess.h>
73
74 #include <linux/atmdev.h>
75 #include <linux/atm.h>
76 #include <linux/sonet.h>
77
78 #define USE_TASKLET
79 #undef USE_SCATTERGATHER
80 #undef USE_CHECKSUM_HW /* still confused about this */
81 #define USE_RBPS
82 #undef USE_RBPS_POOL /* if memory is tight try this */
83 #undef USE_RBPL_POOL /* if memory is tight try this */
84 #define USE_TPD_POOL
85 /* #undef CONFIG_ATM_HE_USE_SUNI */
86 /* #undef HE_DEBUG */
87
88 #include "he.h"
89 #include "suni.h"
90 #include <linux/atm_he.h>
91
92 #define hprintk(fmt,args...) printk(KERN_ERR DEV_LABEL "%d: " fmt, he_dev->number , ##args)
93
94 #ifdef HE_DEBUG
95 #define HPRINTK(fmt,args...) printk(KERN_DEBUG DEV_LABEL "%d: " fmt, he_dev->number , ##args)
96 #else /* !HE_DEBUG */
97 #define HPRINTK(fmt,args...) do { } while (0)
98 #endif /* HE_DEBUG */
99
100 /* declarations */
101
102 static int he_open(struct atm_vcc *vcc);
103 static void he_close(struct atm_vcc *vcc);
104 static int he_send(struct atm_vcc *vcc, struct sk_buff *skb);
105 static int he_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg);
106 static irqreturn_t he_irq_handler(int irq, void *dev_id);
107 static void he_tasklet(unsigned long data);
108 static int he_proc_read(struct atm_dev *dev,loff_t *pos,char *page);
109 static int he_start(struct atm_dev *dev);
110 static void he_stop(struct he_dev *dev);
111 static void he_phy_put(struct atm_dev *, unsigned char, unsigned long);
112 static unsigned char he_phy_get(struct atm_dev *, unsigned long);
113
114 static u8 read_prom_byte(struct he_dev *he_dev, int addr);
115
116 /* globals */
117
118 static struct he_dev *he_devs;
119 static int disable64;
120 static short nvpibits = -1;
121 static short nvcibits = -1;
122 static short rx_skb_reserve = 16;
123 static int irq_coalesce = 1;
124 static int sdh = 0;
125
126 /* Read from EEPROM = 0000 0011b */
127 static unsigned int readtab[] = {
128 CS_HIGH | CLK_HIGH,
129 CS_LOW | CLK_LOW,
130 CLK_HIGH, /* 0 */
131 CLK_LOW,
132 CLK_HIGH, /* 0 */
133 CLK_LOW,
134 CLK_HIGH, /* 0 */
135 CLK_LOW,
136 CLK_HIGH, /* 0 */
137 CLK_LOW,
138 CLK_HIGH, /* 0 */
139 CLK_LOW,
140 CLK_HIGH, /* 0 */
141 CLK_LOW | SI_HIGH,
142 CLK_HIGH | SI_HIGH, /* 1 */
143 CLK_LOW | SI_HIGH,
144 CLK_HIGH | SI_HIGH /* 1 */
145 };
146
147 /* Clock to read from/write to the EEPROM */
148 static unsigned int clocktab[] = {
149 CLK_LOW,
150 CLK_HIGH,
151 CLK_LOW,
152 CLK_HIGH,
153 CLK_LOW,
154 CLK_HIGH,
155 CLK_LOW,
156 CLK_HIGH,
157 CLK_LOW,
158 CLK_HIGH,
159 CLK_LOW,
160 CLK_HIGH,
161 CLK_LOW,
162 CLK_HIGH,
163 CLK_LOW,
164 CLK_HIGH,
165 CLK_LOW
166 };
167
168 static struct atmdev_ops he_ops =
169 {
170 .open = he_open,
171 .close = he_close,
172 .ioctl = he_ioctl,
173 .send = he_send,
174 .phy_put = he_phy_put,
175 .phy_get = he_phy_get,
176 .proc_read = he_proc_read,
177 .owner = THIS_MODULE
178 };
179
180 #define he_writel(dev, val, reg) do { writel(val, (dev)->membase + (reg)); wmb(); } while (0)
181 #define he_readl(dev, reg) readl((dev)->membase + (reg))
182
183 /* section 2.12 connection memory access */
184
185 static __inline__ void
186 he_writel_internal(struct he_dev *he_dev, unsigned val, unsigned addr,
187 unsigned flags)
188 {
189 he_writel(he_dev, val, CON_DAT);
190 (void) he_readl(he_dev, CON_DAT); /* flush posted writes */
191 he_writel(he_dev, flags | CON_CTL_WRITE | CON_CTL_ADDR(addr), CON_CTL);
192 while (he_readl(he_dev, CON_CTL) & CON_CTL_BUSY);
193 }
194
195 #define he_writel_rcm(dev, val, reg) \
196 he_writel_internal(dev, val, reg, CON_CTL_RCM)
197
198 #define he_writel_tcm(dev, val, reg) \
199 he_writel_internal(dev, val, reg, CON_CTL_TCM)
200
201 #define he_writel_mbox(dev, val, reg) \
202 he_writel_internal(dev, val, reg, CON_CTL_MBOX)
203
204 static unsigned
205 he_readl_internal(struct he_dev *he_dev, unsigned addr, unsigned flags)
206 {
207 he_writel(he_dev, flags | CON_CTL_READ | CON_CTL_ADDR(addr), CON_CTL);
208 while (he_readl(he_dev, CON_CTL) & CON_CTL_BUSY);
209 return he_readl(he_dev, CON_DAT);
210 }
211
212 #define he_readl_rcm(dev, reg) \
213 he_readl_internal(dev, reg, CON_CTL_RCM)
214
215 #define he_readl_tcm(dev, reg) \
216 he_readl_internal(dev, reg, CON_CTL_TCM)
217
218 #define he_readl_mbox(dev, reg) \
219 he_readl_internal(dev, reg, CON_CTL_MBOX)
220
221
222 /* figure 2.2 connection id */
223
224 #define he_mkcid(dev, vpi, vci) (((vpi << (dev)->vcibits) | vci) & 0x1fff)
225
226 /* 2.5.1 per connection transmit state registers */
227
228 #define he_writel_tsr0(dev, val, cid) \
229 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 0)
230 #define he_readl_tsr0(dev, cid) \
231 he_readl_tcm(dev, CONFIG_TSRA | (cid << 3) | 0)
232
233 #define he_writel_tsr1(dev, val, cid) \
234 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 1)
235
236 #define he_writel_tsr2(dev, val, cid) \
237 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 2)
238
239 #define he_writel_tsr3(dev, val, cid) \
240 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 3)
241
242 #define he_writel_tsr4(dev, val, cid) \
243 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 4)
244
245 /* from page 2-20
246 *
247 * NOTE While the transmit connection is active, bits 23 through 0
248 * of this register must not be written by the host. Byte
249 * enables should be used during normal operation when writing
250 * the most significant byte.
251 */
252
253 #define he_writel_tsr4_upper(dev, val, cid) \
254 he_writel_internal(dev, val, CONFIG_TSRA | (cid << 3) | 4, \
255 CON_CTL_TCM \
256 | CON_BYTE_DISABLE_2 \
257 | CON_BYTE_DISABLE_1 \
258 | CON_BYTE_DISABLE_0)
259
260 #define he_readl_tsr4(dev, cid) \
261 he_readl_tcm(dev, CONFIG_TSRA | (cid << 3) | 4)
262
263 #define he_writel_tsr5(dev, val, cid) \
264 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 5)
265
266 #define he_writel_tsr6(dev, val, cid) \
267 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 6)
268
269 #define he_writel_tsr7(dev, val, cid) \
270 he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 7)
271
272
273 #define he_writel_tsr8(dev, val, cid) \
274 he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 0)
275
276 #define he_writel_tsr9(dev, val, cid) \
277 he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 1)
278
279 #define he_writel_tsr10(dev, val, cid) \
280 he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 2)
281
282 #define he_writel_tsr11(dev, val, cid) \
283 he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 3)
284
285
286 #define he_writel_tsr12(dev, val, cid) \
287 he_writel_tcm(dev, val, CONFIG_TSRC | (cid << 1) | 0)
288
289 #define he_writel_tsr13(dev, val, cid) \
290 he_writel_tcm(dev, val, CONFIG_TSRC | (cid << 1) | 1)
291
292
293 #define he_writel_tsr14(dev, val, cid) \
294 he_writel_tcm(dev, val, CONFIG_TSRD | cid)
295
296 #define he_writel_tsr14_upper(dev, val, cid) \
297 he_writel_internal(dev, val, CONFIG_TSRD | cid, \
298 CON_CTL_TCM \
299 | CON_BYTE_DISABLE_2 \
300 | CON_BYTE_DISABLE_1 \
301 | CON_BYTE_DISABLE_0)
302
303 /* 2.7.1 per connection receive state registers */
304
305 #define he_writel_rsr0(dev, val, cid) \
306 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 0)
307 #define he_readl_rsr0(dev, cid) \
308 he_readl_rcm(dev, 0x00000 | (cid << 3) | 0)
309
310 #define he_writel_rsr1(dev, val, cid) \
311 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 1)
312
313 #define he_writel_rsr2(dev, val, cid) \
314 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 2)
315
316 #define he_writel_rsr3(dev, val, cid) \
317 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 3)
318
319 #define he_writel_rsr4(dev, val, cid) \
320 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 4)
321
322 #define he_writel_rsr5(dev, val, cid) \
323 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 5)
324
325 #define he_writel_rsr6(dev, val, cid) \
326 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 6)
327
328 #define he_writel_rsr7(dev, val, cid) \
329 he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 7)
330
331 static __inline__ struct atm_vcc*
332 __find_vcc(struct he_dev *he_dev, unsigned cid)
333 {
334 struct hlist_head *head;
335 struct atm_vcc *vcc;
336 struct hlist_node *node;
337 struct sock *s;
338 short vpi;
339 int vci;
340
341 vpi = cid >> he_dev->vcibits;
342 vci = cid & ((1 << he_dev->vcibits) - 1);
343 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
344
345 sk_for_each(s, node, head) {
346 vcc = atm_sk(s);
347 if (vcc->dev == he_dev->atm_dev &&
348 vcc->vci == vci && vcc->vpi == vpi &&
349 vcc->qos.rxtp.traffic_class != ATM_NONE) {
350 return vcc;
351 }
352 }
353 return NULL;
354 }
355
356 static int __devinit
357 he_init_one(struct pci_dev *pci_dev, const struct pci_device_id *pci_ent)
358 {
359 struct atm_dev *atm_dev = NULL;
360 struct he_dev *he_dev = NULL;
361 int err = 0;
362
363 printk(KERN_INFO "ATM he driver\n");
364
365 if (pci_enable_device(pci_dev))
366 return -EIO;
367 if (pci_set_dma_mask(pci_dev, DMA_32BIT_MASK) != 0) {
368 printk(KERN_WARNING "he: no suitable dma available\n");
369 err = -EIO;
370 goto init_one_failure;
371 }
372
373 atm_dev = atm_dev_register(DEV_LABEL, &he_ops, -1, NULL);
374 if (!atm_dev) {
375 err = -ENODEV;
376 goto init_one_failure;
377 }
378 pci_set_drvdata(pci_dev, atm_dev);
379
380 he_dev = kzalloc(sizeof(struct he_dev),
381 GFP_KERNEL);
382 if (!he_dev) {
383 err = -ENOMEM;
384 goto init_one_failure;
385 }
386 he_dev->pci_dev = pci_dev;
387 he_dev->atm_dev = atm_dev;
388 he_dev->atm_dev->dev_data = he_dev;
389 atm_dev->dev_data = he_dev;
390 he_dev->number = atm_dev->number;
391 #ifdef USE_TASKLET
392 tasklet_init(&he_dev->tasklet, he_tasklet, (unsigned long) he_dev);
393 #endif
394 spin_lock_init(&he_dev->global_lock);
395
396 if (he_start(atm_dev)) {
397 he_stop(he_dev);
398 err = -ENODEV;
399 goto init_one_failure;
400 }
401 he_dev->next = NULL;
402 if (he_devs)
403 he_dev->next = he_devs;
404 he_devs = he_dev;
405 return 0;
406
407 init_one_failure:
408 if (atm_dev)
409 atm_dev_deregister(atm_dev);
410 kfree(he_dev);
411 pci_disable_device(pci_dev);
412 return err;
413 }
414
415 static void __devexit
416 he_remove_one (struct pci_dev *pci_dev)
417 {
418 struct atm_dev *atm_dev;
419 struct he_dev *he_dev;
420
421 atm_dev = pci_get_drvdata(pci_dev);
422 he_dev = HE_DEV(atm_dev);
423
424 /* need to remove from he_devs */
425
426 he_stop(he_dev);
427 atm_dev_deregister(atm_dev);
428 kfree(he_dev);
429
430 pci_set_drvdata(pci_dev, NULL);
431 pci_disable_device(pci_dev);
432 }
433
434
435 static unsigned
436 rate_to_atmf(unsigned rate) /* cps to atm forum format */
437 {
438 #define NONZERO (1 << 14)
439
440 unsigned exp = 0;
441
442 if (rate == 0)
443 return 0;
444
445 rate <<= 9;
446 while (rate > 0x3ff) {
447 ++exp;
448 rate >>= 1;
449 }
450
451 return (NONZERO | (exp << 9) | (rate & 0x1ff));
452 }
453
454 static void __devinit
455 he_init_rx_lbfp0(struct he_dev *he_dev)
456 {
457 unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count;
458 unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf;
459 unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD;
460 unsigned row_offset = he_dev->r0_startrow * he_dev->bytes_per_row;
461
462 lbufd_index = 0;
463 lbm_offset = he_readl(he_dev, RCMLBM_BA);
464
465 he_writel(he_dev, lbufd_index, RLBF0_H);
466
467 for (i = 0, lbuf_count = 0; i < he_dev->r0_numbuffs; ++i) {
468 lbufd_index += 2;
469 lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32;
470
471 he_writel_rcm(he_dev, lbuf_addr, lbm_offset);
472 he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1);
473
474 if (++lbuf_count == lbufs_per_row) {
475 lbuf_count = 0;
476 row_offset += he_dev->bytes_per_row;
477 }
478 lbm_offset += 4;
479 }
480
481 he_writel(he_dev, lbufd_index - 2, RLBF0_T);
482 he_writel(he_dev, he_dev->r0_numbuffs, RLBF0_C);
483 }
484
485 static void __devinit
486 he_init_rx_lbfp1(struct he_dev *he_dev)
487 {
488 unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count;
489 unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf;
490 unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD;
491 unsigned row_offset = he_dev->r1_startrow * he_dev->bytes_per_row;
492
493 lbufd_index = 1;
494 lbm_offset = he_readl(he_dev, RCMLBM_BA) + (2 * lbufd_index);
495
496 he_writel(he_dev, lbufd_index, RLBF1_H);
497
498 for (i = 0, lbuf_count = 0; i < he_dev->r1_numbuffs; ++i) {
499 lbufd_index += 2;
500 lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32;
501
502 he_writel_rcm(he_dev, lbuf_addr, lbm_offset);
503 he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1);
504
505 if (++lbuf_count == lbufs_per_row) {
506 lbuf_count = 0;
507 row_offset += he_dev->bytes_per_row;
508 }
509 lbm_offset += 4;
510 }
511
512 he_writel(he_dev, lbufd_index - 2, RLBF1_T);
513 he_writel(he_dev, he_dev->r1_numbuffs, RLBF1_C);
514 }
515
516 static void __devinit
517 he_init_tx_lbfp(struct he_dev *he_dev)
518 {
519 unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count;
520 unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf;
521 unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD;
522 unsigned row_offset = he_dev->tx_startrow * he_dev->bytes_per_row;
523
524 lbufd_index = he_dev->r0_numbuffs + he_dev->r1_numbuffs;
525 lbm_offset = he_readl(he_dev, RCMLBM_BA) + (2 * lbufd_index);
526
527 he_writel(he_dev, lbufd_index, TLBF_H);
528
529 for (i = 0, lbuf_count = 0; i < he_dev->tx_numbuffs; ++i) {
530 lbufd_index += 1;
531 lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32;
532
533 he_writel_rcm(he_dev, lbuf_addr, lbm_offset);
534 he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1);
535
536 if (++lbuf_count == lbufs_per_row) {
537 lbuf_count = 0;
538 row_offset += he_dev->bytes_per_row;
539 }
540 lbm_offset += 2;
541 }
542
543 he_writel(he_dev, lbufd_index - 1, TLBF_T);
544 }
545
546 static int __devinit
547 he_init_tpdrq(struct he_dev *he_dev)
548 {
549 he_dev->tpdrq_base = pci_alloc_consistent(he_dev->pci_dev,
550 CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq), &he_dev->tpdrq_phys);
551 if (he_dev->tpdrq_base == NULL) {
552 hprintk("failed to alloc tpdrq\n");
553 return -ENOMEM;
554 }
555 memset(he_dev->tpdrq_base, 0,
556 CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq));
557
558 he_dev->tpdrq_tail = he_dev->tpdrq_base;
559 he_dev->tpdrq_head = he_dev->tpdrq_base;
560
561 he_writel(he_dev, he_dev->tpdrq_phys, TPDRQ_B_H);
562 he_writel(he_dev, 0, TPDRQ_T);
563 he_writel(he_dev, CONFIG_TPDRQ_SIZE - 1, TPDRQ_S);
564
565 return 0;
566 }
567
568 static void __devinit
569 he_init_cs_block(struct he_dev *he_dev)
570 {
571 unsigned clock, rate, delta;
572 int reg;
573
574 /* 5.1.7 cs block initialization */
575
576 for (reg = 0; reg < 0x20; ++reg)
577 he_writel_mbox(he_dev, 0x0, CS_STTIM0 + reg);
578
579 /* rate grid timer reload values */
580
581 clock = he_is622(he_dev) ? 66667000 : 50000000;
582 rate = he_dev->atm_dev->link_rate;
583 delta = rate / 16 / 2;
584
585 for (reg = 0; reg < 0x10; ++reg) {
586 /* 2.4 internal transmit function
587 *
588 * we initialize the first row in the rate grid.
589 * values are period (in clock cycles) of timer
590 */
591 unsigned period = clock / rate;
592
593 he_writel_mbox(he_dev, period, CS_TGRLD0 + reg);
594 rate -= delta;
595 }
596
597 if (he_is622(he_dev)) {
598 /* table 5.2 (4 cells per lbuf) */
599 he_writel_mbox(he_dev, 0x000800fa, CS_ERTHR0);
600 he_writel_mbox(he_dev, 0x000c33cb, CS_ERTHR1);
601 he_writel_mbox(he_dev, 0x0010101b, CS_ERTHR2);
602 he_writel_mbox(he_dev, 0x00181dac, CS_ERTHR3);
603 he_writel_mbox(he_dev, 0x00280600, CS_ERTHR4);
604
605 /* table 5.3, 5.4, 5.5, 5.6, 5.7 */
606 he_writel_mbox(he_dev, 0x023de8b3, CS_ERCTL0);
607 he_writel_mbox(he_dev, 0x1801, CS_ERCTL1);
608 he_writel_mbox(he_dev, 0x68b3, CS_ERCTL2);
609 he_writel_mbox(he_dev, 0x1280, CS_ERSTAT0);
610 he_writel_mbox(he_dev, 0x68b3, CS_ERSTAT1);
611 he_writel_mbox(he_dev, 0x14585, CS_RTFWR);
612
613 he_writel_mbox(he_dev, 0x4680, CS_RTATR);
614
615 /* table 5.8 */
616 he_writel_mbox(he_dev, 0x00159ece, CS_TFBSET);
617 he_writel_mbox(he_dev, 0x68b3, CS_WCRMAX);
618 he_writel_mbox(he_dev, 0x5eb3, CS_WCRMIN);
619 he_writel_mbox(he_dev, 0xe8b3, CS_WCRINC);
620 he_writel_mbox(he_dev, 0xdeb3, CS_WCRDEC);
621 he_writel_mbox(he_dev, 0x68b3, CS_WCRCEIL);
622
623 /* table 5.9 */
624 he_writel_mbox(he_dev, 0x5, CS_OTPPER);
625 he_writel_mbox(he_dev, 0x14, CS_OTWPER);
626 } else {
627 /* table 5.1 (4 cells per lbuf) */
628 he_writel_mbox(he_dev, 0x000400ea, CS_ERTHR0);
629 he_writel_mbox(he_dev, 0x00063388, CS_ERTHR1);
630 he_writel_mbox(he_dev, 0x00081018, CS_ERTHR2);
631 he_writel_mbox(he_dev, 0x000c1dac, CS_ERTHR3);
632 he_writel_mbox(he_dev, 0x0014051a, CS_ERTHR4);
633
634 /* table 5.3, 5.4, 5.5, 5.6, 5.7 */
635 he_writel_mbox(he_dev, 0x0235e4b1, CS_ERCTL0);
636 he_writel_mbox(he_dev, 0x4701, CS_ERCTL1);
637 he_writel_mbox(he_dev, 0x64b1, CS_ERCTL2);
638 he_writel_mbox(he_dev, 0x1280, CS_ERSTAT0);
639 he_writel_mbox(he_dev, 0x64b1, CS_ERSTAT1);
640 he_writel_mbox(he_dev, 0xf424, CS_RTFWR);
641
642 he_writel_mbox(he_dev, 0x4680, CS_RTATR);
643
644 /* table 5.8 */
645 he_writel_mbox(he_dev, 0x000563b7, CS_TFBSET);
646 he_writel_mbox(he_dev, 0x64b1, CS_WCRMAX);
647 he_writel_mbox(he_dev, 0x5ab1, CS_WCRMIN);
648 he_writel_mbox(he_dev, 0xe4b1, CS_WCRINC);
649 he_writel_mbox(he_dev, 0xdab1, CS_WCRDEC);
650 he_writel_mbox(he_dev, 0x64b1, CS_WCRCEIL);
651
652 /* table 5.9 */
653 he_writel_mbox(he_dev, 0x6, CS_OTPPER);
654 he_writel_mbox(he_dev, 0x1e, CS_OTWPER);
655 }
656
657 he_writel_mbox(he_dev, 0x8, CS_OTTLIM);
658
659 for (reg = 0; reg < 0x8; ++reg)
660 he_writel_mbox(he_dev, 0x0, CS_HGRRT0 + reg);
661
662 }
663
664 static int __devinit
665 he_init_cs_block_rcm(struct he_dev *he_dev)
666 {
667 unsigned (*rategrid)[16][16];
668 unsigned rate, delta;
669 int i, j, reg;
670
671 unsigned rate_atmf, exp, man;
672 unsigned long long rate_cps;
673 int mult, buf, buf_limit = 4;
674
675 rategrid = kmalloc( sizeof(unsigned) * 16 * 16, GFP_KERNEL);
676 if (!rategrid)
677 return -ENOMEM;
678
679 /* initialize rate grid group table */
680
681 for (reg = 0x0; reg < 0xff; ++reg)
682 he_writel_rcm(he_dev, 0x0, CONFIG_RCMABR + reg);
683
684 /* initialize rate controller groups */
685
686 for (reg = 0x100; reg < 0x1ff; ++reg)
687 he_writel_rcm(he_dev, 0x0, CONFIG_RCMABR + reg);
688
689 /* initialize tNrm lookup table */
690
691 /* the manual makes reference to a routine in a sample driver
692 for proper configuration; fortunately, we only need this
693 in order to support abr connection */
694
695 /* initialize rate to group table */
696
697 rate = he_dev->atm_dev->link_rate;
698 delta = rate / 32;
699
700 /*
701 * 2.4 transmit internal functions
702 *
703 * we construct a copy of the rate grid used by the scheduler
704 * in order to construct the rate to group table below
705 */
706
707 for (j = 0; j < 16; j++) {
708 (*rategrid)[0][j] = rate;
709 rate -= delta;
710 }
711
712 for (i = 1; i < 16; i++)
713 for (j = 0; j < 16; j++)
714 if (i > 14)
715 (*rategrid)[i][j] = (*rategrid)[i - 1][j] / 4;
716 else
717 (*rategrid)[i][j] = (*rategrid)[i - 1][j] / 2;
718
719 /*
720 * 2.4 transmit internal function
721 *
722 * this table maps the upper 5 bits of exponent and mantissa
723 * of the atm forum representation of the rate into an index
724 * on rate grid
725 */
726
727 rate_atmf = 0;
728 while (rate_atmf < 0x400) {
729 man = (rate_atmf & 0x1f) << 4;
730 exp = rate_atmf >> 5;
731
732 /*
733 instead of '/ 512', use '>> 9' to prevent a call
734 to divdu3 on x86 platforms
735 */
736 rate_cps = (unsigned long long) (1 << exp) * (man + 512) >> 9;
737
738 if (rate_cps < 10)
739 rate_cps = 10; /* 2.2.1 minimum payload rate is 10 cps */
740
741 for (i = 255; i > 0; i--)
742 if ((*rategrid)[i/16][i%16] >= rate_cps)
743 break; /* pick nearest rate instead? */
744
745 /*
746 * each table entry is 16 bits: (rate grid index (8 bits)
747 * and a buffer limit (8 bits)
748 * there are two table entries in each 32-bit register
749 */
750
751 #ifdef notdef
752 buf = rate_cps * he_dev->tx_numbuffs /
753 (he_dev->atm_dev->link_rate * 2);
754 #else
755 /* this is pretty, but avoids _divdu3 and is mostly correct */
756 mult = he_dev->atm_dev->link_rate / ATM_OC3_PCR;
757 if (rate_cps > (272 * mult))
758 buf = 4;
759 else if (rate_cps > (204 * mult))
760 buf = 3;
761 else if (rate_cps > (136 * mult))
762 buf = 2;
763 else if (rate_cps > (68 * mult))
764 buf = 1;
765 else
766 buf = 0;
767 #endif
768 if (buf > buf_limit)
769 buf = buf_limit;
770 reg = (reg << 16) | ((i << 8) | buf);
771
772 #define RTGTBL_OFFSET 0x400
773
774 if (rate_atmf & 0x1)
775 he_writel_rcm(he_dev, reg,
776 CONFIG_RCMABR + RTGTBL_OFFSET + (rate_atmf >> 1));
777
778 ++rate_atmf;
779 }
780
781 kfree(rategrid);
782 return 0;
783 }
784
785 static int __devinit
786 he_init_group(struct he_dev *he_dev, int group)
787 {
788 int i;
789
790 #ifdef USE_RBPS
791 /* small buffer pool */
792 #ifdef USE_RBPS_POOL
793 he_dev->rbps_pool = pci_pool_create("rbps", he_dev->pci_dev,
794 CONFIG_RBPS_BUFSIZE, 8, 0);
795 if (he_dev->rbps_pool == NULL) {
796 hprintk("unable to create rbps pages\n");
797 return -ENOMEM;
798 }
799 #else /* !USE_RBPS_POOL */
800 he_dev->rbps_pages = pci_alloc_consistent(he_dev->pci_dev,
801 CONFIG_RBPS_SIZE * CONFIG_RBPS_BUFSIZE, &he_dev->rbps_pages_phys);
802 if (he_dev->rbps_pages == NULL) {
803 hprintk("unable to create rbps page pool\n");
804 return -ENOMEM;
805 }
806 #endif /* USE_RBPS_POOL */
807
808 he_dev->rbps_base = pci_alloc_consistent(he_dev->pci_dev,
809 CONFIG_RBPS_SIZE * sizeof(struct he_rbp), &he_dev->rbps_phys);
810 if (he_dev->rbps_base == NULL) {
811 hprintk("failed to alloc rbps\n");
812 return -ENOMEM;
813 }
814 memset(he_dev->rbps_base, 0, CONFIG_RBPS_SIZE * sizeof(struct he_rbp));
815 he_dev->rbps_virt = kmalloc(CONFIG_RBPS_SIZE * sizeof(struct he_virt), GFP_KERNEL);
816
817 for (i = 0; i < CONFIG_RBPS_SIZE; ++i) {
818 dma_addr_t dma_handle;
819 void *cpuaddr;
820
821 #ifdef USE_RBPS_POOL
822 cpuaddr = pci_pool_alloc(he_dev->rbps_pool, GFP_KERNEL|GFP_DMA, &dma_handle);
823 if (cpuaddr == NULL)
824 return -ENOMEM;
825 #else
826 cpuaddr = he_dev->rbps_pages + (i * CONFIG_RBPS_BUFSIZE);
827 dma_handle = he_dev->rbps_pages_phys + (i * CONFIG_RBPS_BUFSIZE);
828 #endif
829
830 he_dev->rbps_virt[i].virt = cpuaddr;
831 he_dev->rbps_base[i].status = RBP_LOANED | RBP_SMALLBUF | (i << RBP_INDEX_OFF);
832 he_dev->rbps_base[i].phys = dma_handle;
833
834 }
835 he_dev->rbps_tail = &he_dev->rbps_base[CONFIG_RBPS_SIZE - 1];
836
837 he_writel(he_dev, he_dev->rbps_phys, G0_RBPS_S + (group * 32));
838 he_writel(he_dev, RBPS_MASK(he_dev->rbps_tail),
839 G0_RBPS_T + (group * 32));
840 he_writel(he_dev, CONFIG_RBPS_BUFSIZE/4,
841 G0_RBPS_BS + (group * 32));
842 he_writel(he_dev,
843 RBP_THRESH(CONFIG_RBPS_THRESH) |
844 RBP_QSIZE(CONFIG_RBPS_SIZE - 1) |
845 RBP_INT_ENB,
846 G0_RBPS_QI + (group * 32));
847 #else /* !USE_RBPS */
848 he_writel(he_dev, 0x0, G0_RBPS_S + (group * 32));
849 he_writel(he_dev, 0x0, G0_RBPS_T + (group * 32));
850 he_writel(he_dev, 0x0, G0_RBPS_QI + (group * 32));
851 he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0),
852 G0_RBPS_BS + (group * 32));
853 #endif /* USE_RBPS */
854
855 /* large buffer pool */
856 #ifdef USE_RBPL_POOL
857 he_dev->rbpl_pool = pci_pool_create("rbpl", he_dev->pci_dev,
858 CONFIG_RBPL_BUFSIZE, 8, 0);
859 if (he_dev->rbpl_pool == NULL) {
860 hprintk("unable to create rbpl pool\n");
861 return -ENOMEM;
862 }
863 #else /* !USE_RBPL_POOL */
864 he_dev->rbpl_pages = (void *) pci_alloc_consistent(he_dev->pci_dev,
865 CONFIG_RBPL_SIZE * CONFIG_RBPL_BUFSIZE, &he_dev->rbpl_pages_phys);
866 if (he_dev->rbpl_pages == NULL) {
867 hprintk("unable to create rbpl pages\n");
868 return -ENOMEM;
869 }
870 #endif /* USE_RBPL_POOL */
871
872 he_dev->rbpl_base = pci_alloc_consistent(he_dev->pci_dev,
873 CONFIG_RBPL_SIZE * sizeof(struct he_rbp), &he_dev->rbpl_phys);
874 if (he_dev->rbpl_base == NULL) {
875 hprintk("failed to alloc rbpl\n");
876 return -ENOMEM;
877 }
878 memset(he_dev->rbpl_base, 0, CONFIG_RBPL_SIZE * sizeof(struct he_rbp));
879 he_dev->rbpl_virt = kmalloc(CONFIG_RBPL_SIZE * sizeof(struct he_virt), GFP_KERNEL);
880
881 for (i = 0; i < CONFIG_RBPL_SIZE; ++i) {
882 dma_addr_t dma_handle;
883 void *cpuaddr;
884
885 #ifdef USE_RBPL_POOL
886 cpuaddr = pci_pool_alloc(he_dev->rbpl_pool, GFP_KERNEL|GFP_DMA, &dma_handle);
887 if (cpuaddr == NULL)
888 return -ENOMEM;
889 #else
890 cpuaddr = he_dev->rbpl_pages + (i * CONFIG_RBPL_BUFSIZE);
891 dma_handle = he_dev->rbpl_pages_phys + (i * CONFIG_RBPL_BUFSIZE);
892 #endif
893
894 he_dev->rbpl_virt[i].virt = cpuaddr;
895 he_dev->rbpl_base[i].status = RBP_LOANED | (i << RBP_INDEX_OFF);
896 he_dev->rbpl_base[i].phys = dma_handle;
897 }
898 he_dev->rbpl_tail = &he_dev->rbpl_base[CONFIG_RBPL_SIZE - 1];
899
900 he_writel(he_dev, he_dev->rbpl_phys, G0_RBPL_S + (group * 32));
901 he_writel(he_dev, RBPL_MASK(he_dev->rbpl_tail),
902 G0_RBPL_T + (group * 32));
903 he_writel(he_dev, CONFIG_RBPL_BUFSIZE/4,
904 G0_RBPL_BS + (group * 32));
905 he_writel(he_dev,
906 RBP_THRESH(CONFIG_RBPL_THRESH) |
907 RBP_QSIZE(CONFIG_RBPL_SIZE - 1) |
908 RBP_INT_ENB,
909 G0_RBPL_QI + (group * 32));
910
911 /* rx buffer ready queue */
912
913 he_dev->rbrq_base = pci_alloc_consistent(he_dev->pci_dev,
914 CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq), &he_dev->rbrq_phys);
915 if (he_dev->rbrq_base == NULL) {
916 hprintk("failed to allocate rbrq\n");
917 return -ENOMEM;
918 }
919 memset(he_dev->rbrq_base, 0, CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq));
920
921 he_dev->rbrq_head = he_dev->rbrq_base;
922 he_writel(he_dev, he_dev->rbrq_phys, G0_RBRQ_ST + (group * 16));
923 he_writel(he_dev, 0, G0_RBRQ_H + (group * 16));
924 he_writel(he_dev,
925 RBRQ_THRESH(CONFIG_RBRQ_THRESH) | RBRQ_SIZE(CONFIG_RBRQ_SIZE - 1),
926 G0_RBRQ_Q + (group * 16));
927 if (irq_coalesce) {
928 hprintk("coalescing interrupts\n");
929 he_writel(he_dev, RBRQ_TIME(768) | RBRQ_COUNT(7),
930 G0_RBRQ_I + (group * 16));
931 } else
932 he_writel(he_dev, RBRQ_TIME(0) | RBRQ_COUNT(1),
933 G0_RBRQ_I + (group * 16));
934
935 /* tx buffer ready queue */
936
937 he_dev->tbrq_base = pci_alloc_consistent(he_dev->pci_dev,
938 CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), &he_dev->tbrq_phys);
939 if (he_dev->tbrq_base == NULL) {
940 hprintk("failed to allocate tbrq\n");
941 return -ENOMEM;
942 }
943 memset(he_dev->tbrq_base, 0, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq));
944
945 he_dev->tbrq_head = he_dev->tbrq_base;
946
947 he_writel(he_dev, he_dev->tbrq_phys, G0_TBRQ_B_T + (group * 16));
948 he_writel(he_dev, 0, G0_TBRQ_H + (group * 16));
949 he_writel(he_dev, CONFIG_TBRQ_SIZE - 1, G0_TBRQ_S + (group * 16));
950 he_writel(he_dev, CONFIG_TBRQ_THRESH, G0_TBRQ_THRESH + (group * 16));
951
952 return 0;
953 }
954
955 static int __devinit
956 he_init_irq(struct he_dev *he_dev)
957 {
958 int i;
959
960 /* 2.9.3.5 tail offset for each interrupt queue is located after the
961 end of the interrupt queue */
962
963 he_dev->irq_base = pci_alloc_consistent(he_dev->pci_dev,
964 (CONFIG_IRQ_SIZE+1) * sizeof(struct he_irq), &he_dev->irq_phys);
965 if (he_dev->irq_base == NULL) {
966 hprintk("failed to allocate irq\n");
967 return -ENOMEM;
968 }
969 he_dev->irq_tailoffset = (unsigned *)
970 &he_dev->irq_base[CONFIG_IRQ_SIZE];
971 *he_dev->irq_tailoffset = 0;
972 he_dev->irq_head = he_dev->irq_base;
973 he_dev->irq_tail = he_dev->irq_base;
974
975 for (i = 0; i < CONFIG_IRQ_SIZE; ++i)
976 he_dev->irq_base[i].isw = ITYPE_INVALID;
977
978 he_writel(he_dev, he_dev->irq_phys, IRQ0_BASE);
979 he_writel(he_dev,
980 IRQ_SIZE(CONFIG_IRQ_SIZE) | IRQ_THRESH(CONFIG_IRQ_THRESH),
981 IRQ0_HEAD);
982 he_writel(he_dev, IRQ_INT_A | IRQ_TYPE_LINE, IRQ0_CNTL);
983 he_writel(he_dev, 0x0, IRQ0_DATA);
984
985 he_writel(he_dev, 0x0, IRQ1_BASE);
986 he_writel(he_dev, 0x0, IRQ1_HEAD);
987 he_writel(he_dev, 0x0, IRQ1_CNTL);
988 he_writel(he_dev, 0x0, IRQ1_DATA);
989
990 he_writel(he_dev, 0x0, IRQ2_BASE);
991 he_writel(he_dev, 0x0, IRQ2_HEAD);
992 he_writel(he_dev, 0x0, IRQ2_CNTL);
993 he_writel(he_dev, 0x0, IRQ2_DATA);
994
995 he_writel(he_dev, 0x0, IRQ3_BASE);
996 he_writel(he_dev, 0x0, IRQ3_HEAD);
997 he_writel(he_dev, 0x0, IRQ3_CNTL);
998 he_writel(he_dev, 0x0, IRQ3_DATA);
999
1000 /* 2.9.3.2 interrupt queue mapping registers */
1001
1002 he_writel(he_dev, 0x0, GRP_10_MAP);
1003 he_writel(he_dev, 0x0, GRP_32_MAP);
1004 he_writel(he_dev, 0x0, GRP_54_MAP);
1005 he_writel(he_dev, 0x0, GRP_76_MAP);
1006
1007 if (request_irq(he_dev->pci_dev->irq, he_irq_handler, IRQF_DISABLED|IRQF_SHARED, DEV_LABEL, he_dev)) {
1008 hprintk("irq %d already in use\n", he_dev->pci_dev->irq);
1009 return -EINVAL;
1010 }
1011
1012 he_dev->irq = he_dev->pci_dev->irq;
1013
1014 return 0;
1015 }
1016
1017 static int __devinit
1018 he_start(struct atm_dev *dev)
1019 {
1020 struct he_dev *he_dev;
1021 struct pci_dev *pci_dev;
1022 unsigned long membase;
1023
1024 u16 command;
1025 u32 gen_cntl_0, host_cntl, lb_swap;
1026 u8 cache_size, timer;
1027
1028 unsigned err;
1029 unsigned int status, reg;
1030 int i, group;
1031
1032 he_dev = HE_DEV(dev);
1033 pci_dev = he_dev->pci_dev;
1034
1035 membase = pci_resource_start(pci_dev, 0);
1036 HPRINTK("membase = 0x%lx irq = %d.\n", membase, pci_dev->irq);
1037
1038 /*
1039 * pci bus controller initialization
1040 */
1041
1042 /* 4.3 pci bus controller-specific initialization */
1043 if (pci_read_config_dword(pci_dev, GEN_CNTL_0, &gen_cntl_0) != 0) {
1044 hprintk("can't read GEN_CNTL_0\n");
1045 return -EINVAL;
1046 }
1047 gen_cntl_0 |= (MRL_ENB | MRM_ENB | IGNORE_TIMEOUT);
1048 if (pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0) != 0) {
1049 hprintk("can't write GEN_CNTL_0.\n");
1050 return -EINVAL;
1051 }
1052
1053 if (pci_read_config_word(pci_dev, PCI_COMMAND, &command) != 0) {
1054 hprintk("can't read PCI_COMMAND.\n");
1055 return -EINVAL;
1056 }
1057
1058 command |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE);
1059 if (pci_write_config_word(pci_dev, PCI_COMMAND, command) != 0) {
1060 hprintk("can't enable memory.\n");
1061 return -EINVAL;
1062 }
1063
1064 if (pci_read_config_byte(pci_dev, PCI_CACHE_LINE_SIZE, &cache_size)) {
1065 hprintk("can't read cache line size?\n");
1066 return -EINVAL;
1067 }
1068
1069 if (cache_size < 16) {
1070 cache_size = 16;
1071 if (pci_write_config_byte(pci_dev, PCI_CACHE_LINE_SIZE, cache_size))
1072 hprintk("can't set cache line size to %d\n", cache_size);
1073 }
1074
1075 if (pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER, &timer)) {
1076 hprintk("can't read latency timer?\n");
1077 return -EINVAL;
1078 }
1079
1080 /* from table 3.9
1081 *
1082 * LAT_TIMER = 1 + AVG_LAT + BURST_SIZE/BUS_SIZE
1083 *
1084 * AVG_LAT: The average first data read/write latency [maximum 16 clock cycles]
1085 * BURST_SIZE: 1536 bytes (read) for 622, 768 bytes (read) for 155 [192 clock cycles]
1086 *
1087 */
1088 #define LAT_TIMER 209
1089 if (timer < LAT_TIMER) {
1090 HPRINTK("latency timer was %d, setting to %d\n", timer, LAT_TIMER);
1091 timer = LAT_TIMER;
1092 if (pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, timer))
1093 hprintk("can't set latency timer to %d\n", timer);
1094 }
1095
1096 if (!(he_dev->membase = ioremap(membase, HE_REGMAP_SIZE))) {
1097 hprintk("can't set up page mapping\n");
1098 return -EINVAL;
1099 }
1100
1101 /* 4.4 card reset */
1102 he_writel(he_dev, 0x0, RESET_CNTL);
1103 he_writel(he_dev, 0xff, RESET_CNTL);
1104
1105 udelay(16*1000); /* 16 ms */
1106 status = he_readl(he_dev, RESET_CNTL);
1107 if ((status & BOARD_RST_STATUS) == 0) {
1108 hprintk("reset failed\n");
1109 return -EINVAL;
1110 }
1111
1112 /* 4.5 set bus width */
1113 host_cntl = he_readl(he_dev, HOST_CNTL);
1114 if (host_cntl & PCI_BUS_SIZE64)
1115 gen_cntl_0 |= ENBL_64;
1116 else
1117 gen_cntl_0 &= ~ENBL_64;
1118
1119 if (disable64 == 1) {
1120 hprintk("disabling 64-bit pci bus transfers\n");
1121 gen_cntl_0 &= ~ENBL_64;
1122 }
1123
1124 if (gen_cntl_0 & ENBL_64)
1125 hprintk("64-bit transfers enabled\n");
1126
1127 pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0);
1128
1129 /* 4.7 read prom contents */
1130 for (i = 0; i < PROD_ID_LEN; ++i)
1131 he_dev->prod_id[i] = read_prom_byte(he_dev, PROD_ID + i);
1132
1133 he_dev->media = read_prom_byte(he_dev, MEDIA);
1134
1135 for (i = 0; i < 6; ++i)
1136 dev->esi[i] = read_prom_byte(he_dev, MAC_ADDR + i);
1137
1138 hprintk("%s%s, %x:%x:%x:%x:%x:%x\n",
1139 he_dev->prod_id,
1140 he_dev->media & 0x40 ? "SM" : "MM",
1141 dev->esi[0],
1142 dev->esi[1],
1143 dev->esi[2],
1144 dev->esi[3],
1145 dev->esi[4],
1146 dev->esi[5]);
1147 he_dev->atm_dev->link_rate = he_is622(he_dev) ?
1148 ATM_OC12_PCR : ATM_OC3_PCR;
1149
1150 /* 4.6 set host endianess */
1151 lb_swap = he_readl(he_dev, LB_SWAP);
1152 if (he_is622(he_dev))
1153 lb_swap &= ~XFER_SIZE; /* 4 cells */
1154 else
1155 lb_swap |= XFER_SIZE; /* 8 cells */
1156 #ifdef __BIG_ENDIAN
1157 lb_swap |= DESC_WR_SWAP | INTR_SWAP | BIG_ENDIAN_HOST;
1158 #else
1159 lb_swap &= ~(DESC_WR_SWAP | INTR_SWAP | BIG_ENDIAN_HOST |
1160 DATA_WR_SWAP | DATA_RD_SWAP | DESC_RD_SWAP);
1161 #endif /* __BIG_ENDIAN */
1162 he_writel(he_dev, lb_swap, LB_SWAP);
1163
1164 /* 4.8 sdram controller initialization */
1165 he_writel(he_dev, he_is622(he_dev) ? LB_64_ENB : 0x0, SDRAM_CTL);
1166
1167 /* 4.9 initialize rnum value */
1168 lb_swap |= SWAP_RNUM_MAX(0xf);
1169 he_writel(he_dev, lb_swap, LB_SWAP);
1170
1171 /* 4.10 initialize the interrupt queues */
1172 if ((err = he_init_irq(he_dev)) != 0)
1173 return err;
1174
1175 /* 4.11 enable pci bus controller state machines */
1176 host_cntl |= (OUTFF_ENB | CMDFF_ENB |
1177 QUICK_RD_RETRY | QUICK_WR_RETRY | PERR_INT_ENB);
1178 he_writel(he_dev, host_cntl, HOST_CNTL);
1179
1180 gen_cntl_0 |= INT_PROC_ENBL|INIT_ENB;
1181 pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0);
1182
1183 /*
1184 * atm network controller initialization
1185 */
1186
1187 /* 5.1.1 generic configuration state */
1188
1189 /*
1190 * local (cell) buffer memory map
1191 *
1192 * HE155 HE622
1193 *
1194 * 0 ____________1023 bytes 0 _______________________2047 bytes
1195 * | | | | |
1196 * | utility | | rx0 | |
1197 * 5|____________| 255|___________________| u |
1198 * 6| | 256| | t |
1199 * | | | | i |
1200 * | rx0 | row | tx | l |
1201 * | | | | i |
1202 * | | 767|___________________| t |
1203 * 517|____________| 768| | y |
1204 * row 518| | | rx1 | |
1205 * | | 1023|___________________|___|
1206 * | |
1207 * | tx |
1208 * | |
1209 * | |
1210 * 1535|____________|
1211 * 1536| |
1212 * | rx1 |
1213 * 2047|____________|
1214 *
1215 */
1216
1217 /* total 4096 connections */
1218 he_dev->vcibits = CONFIG_DEFAULT_VCIBITS;
1219 he_dev->vpibits = CONFIG_DEFAULT_VPIBITS;
1220
1221 if (nvpibits != -1 && nvcibits != -1 && nvpibits+nvcibits != HE_MAXCIDBITS) {
1222 hprintk("nvpibits + nvcibits != %d\n", HE_MAXCIDBITS);
1223 return -ENODEV;
1224 }
1225
1226 if (nvpibits != -1) {
1227 he_dev->vpibits = nvpibits;
1228 he_dev->vcibits = HE_MAXCIDBITS - nvpibits;
1229 }
1230
1231 if (nvcibits != -1) {
1232 he_dev->vcibits = nvcibits;
1233 he_dev->vpibits = HE_MAXCIDBITS - nvcibits;
1234 }
1235
1236
1237 if (he_is622(he_dev)) {
1238 he_dev->cells_per_row = 40;
1239 he_dev->bytes_per_row = 2048;
1240 he_dev->r0_numrows = 256;
1241 he_dev->tx_numrows = 512;
1242 he_dev->r1_numrows = 256;
1243 he_dev->r0_startrow = 0;
1244 he_dev->tx_startrow = 256;
1245 he_dev->r1_startrow = 768;
1246 } else {
1247 he_dev->cells_per_row = 20;
1248 he_dev->bytes_per_row = 1024;
1249 he_dev->r0_numrows = 512;
1250 he_dev->tx_numrows = 1018;
1251 he_dev->r1_numrows = 512;
1252 he_dev->r0_startrow = 6;
1253 he_dev->tx_startrow = 518;
1254 he_dev->r1_startrow = 1536;
1255 }
1256
1257 he_dev->cells_per_lbuf = 4;
1258 he_dev->buffer_limit = 4;
1259 he_dev->r0_numbuffs = he_dev->r0_numrows *
1260 he_dev->cells_per_row / he_dev->cells_per_lbuf;
1261 if (he_dev->r0_numbuffs > 2560)
1262 he_dev->r0_numbuffs = 2560;
1263
1264 he_dev->r1_numbuffs = he_dev->r1_numrows *
1265 he_dev->cells_per_row / he_dev->cells_per_lbuf;
1266 if (he_dev->r1_numbuffs > 2560)
1267 he_dev->r1_numbuffs = 2560;
1268
1269 he_dev->tx_numbuffs = he_dev->tx_numrows *
1270 he_dev->cells_per_row / he_dev->cells_per_lbuf;
1271 if (he_dev->tx_numbuffs > 5120)
1272 he_dev->tx_numbuffs = 5120;
1273
1274 /* 5.1.2 configure hardware dependent registers */
1275
1276 he_writel(he_dev,
1277 SLICE_X(0x2) | ARB_RNUM_MAX(0xf) | TH_PRTY(0x3) |
1278 RH_PRTY(0x3) | TL_PRTY(0x2) | RL_PRTY(0x1) |
1279 (he_is622(he_dev) ? BUS_MULTI(0x28) : BUS_MULTI(0x46)) |
1280 (he_is622(he_dev) ? NET_PREF(0x50) : NET_PREF(0x8c)),
1281 LBARB);
1282
1283 he_writel(he_dev, BANK_ON |
1284 (he_is622(he_dev) ? (REF_RATE(0x384) | WIDE_DATA) : REF_RATE(0x150)),
1285 SDRAMCON);
1286
1287 he_writel(he_dev,
1288 (he_is622(he_dev) ? RM_BANK_WAIT(1) : RM_BANK_WAIT(0)) |
1289 RM_RW_WAIT(1), RCMCONFIG);
1290 he_writel(he_dev,
1291 (he_is622(he_dev) ? TM_BANK_WAIT(2) : TM_BANK_WAIT(1)) |
1292 TM_RW_WAIT(1), TCMCONFIG);
1293
1294 he_writel(he_dev, he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD, LB_CONFIG);
1295
1296 he_writel(he_dev,
1297 (he_is622(he_dev) ? UT_RD_DELAY(8) : UT_RD_DELAY(0)) |
1298 (he_is622(he_dev) ? RC_UT_MODE(0) : RC_UT_MODE(1)) |
1299 RX_VALVP(he_dev->vpibits) |
1300 RX_VALVC(he_dev->vcibits), RC_CONFIG);
1301
1302 he_writel(he_dev, DRF_THRESH(0x20) |
1303 (he_is622(he_dev) ? TX_UT_MODE(0) : TX_UT_MODE(1)) |
1304 TX_VCI_MASK(he_dev->vcibits) |
1305 LBFREE_CNT(he_dev->tx_numbuffs), TX_CONFIG);
1306
1307 he_writel(he_dev, 0x0, TXAAL5_PROTO);
1308
1309 he_writel(he_dev, PHY_INT_ENB |
1310 (he_is622(he_dev) ? PTMR_PRE(67 - 1) : PTMR_PRE(50 - 1)),
1311 RH_CONFIG);
1312
1313 /* 5.1.3 initialize connection memory */
1314
1315 for (i = 0; i < TCM_MEM_SIZE; ++i)
1316 he_writel_tcm(he_dev, 0, i);
1317
1318 for (i = 0; i < RCM_MEM_SIZE; ++i)
1319 he_writel_rcm(he_dev, 0, i);
1320
1321 /*
1322 * transmit connection memory map
1323 *
1324 * tx memory
1325 * 0x0 ___________________
1326 * | |
1327 * | |
1328 * | TSRa |
1329 * | |
1330 * | |
1331 * 0x8000|___________________|
1332 * | |
1333 * | TSRb |
1334 * 0xc000|___________________|
1335 * | |
1336 * | TSRc |
1337 * 0xe000|___________________|
1338 * | TSRd |
1339 * 0xf000|___________________|
1340 * | tmABR |
1341 * 0x10000|___________________|
1342 * | |
1343 * | tmTPD |
1344 * |___________________|
1345 * | |
1346 * ....
1347 * 0x1ffff|___________________|
1348 *
1349 *
1350 */
1351
1352 he_writel(he_dev, CONFIG_TSRB, TSRB_BA);
1353 he_writel(he_dev, CONFIG_TSRC, TSRC_BA);
1354 he_writel(he_dev, CONFIG_TSRD, TSRD_BA);
1355 he_writel(he_dev, CONFIG_TMABR, TMABR_BA);
1356 he_writel(he_dev, CONFIG_TPDBA, TPD_BA);
1357
1358
1359 /*
1360 * receive connection memory map
1361 *
1362 * 0x0 ___________________
1363 * | |
1364 * | |
1365 * | RSRa |
1366 * | |
1367 * | |
1368 * 0x8000|___________________|
1369 * | |
1370 * | rx0/1 |
1371 * | LBM | link lists of local
1372 * | tx | buffer memory
1373 * | |
1374 * 0xd000|___________________|
1375 * | |
1376 * | rmABR |
1377 * 0xe000|___________________|
1378 * | |
1379 * | RSRb |
1380 * |___________________|
1381 * | |
1382 * ....
1383 * 0xffff|___________________|
1384 */
1385
1386 he_writel(he_dev, 0x08000, RCMLBM_BA);
1387 he_writel(he_dev, 0x0e000, RCMRSRB_BA);
1388 he_writel(he_dev, 0x0d800, RCMABR_BA);
1389
1390 /* 5.1.4 initialize local buffer free pools linked lists */
1391
1392 he_init_rx_lbfp0(he_dev);
1393 he_init_rx_lbfp1(he_dev);
1394
1395 he_writel(he_dev, 0x0, RLBC_H);
1396 he_writel(he_dev, 0x0, RLBC_T);
1397 he_writel(he_dev, 0x0, RLBC_H2);
1398
1399 he_writel(he_dev, 512, RXTHRSH); /* 10% of r0+r1 buffers */
1400 he_writel(he_dev, 256, LITHRSH); /* 5% of r0+r1 buffers */
1401
1402 he_init_tx_lbfp(he_dev);
1403
1404 he_writel(he_dev, he_is622(he_dev) ? 0x104780 : 0x800, UBUFF_BA);
1405
1406 /* 5.1.5 initialize intermediate receive queues */
1407
1408 if (he_is622(he_dev)) {
1409 he_writel(he_dev, 0x000f, G0_INMQ_S);
1410 he_writel(he_dev, 0x200f, G0_INMQ_L);
1411
1412 he_writel(he_dev, 0x001f, G1_INMQ_S);
1413 he_writel(he_dev, 0x201f, G1_INMQ_L);
1414
1415 he_writel(he_dev, 0x002f, G2_INMQ_S);
1416 he_writel(he_dev, 0x202f, G2_INMQ_L);
1417
1418 he_writel(he_dev, 0x003f, G3_INMQ_S);
1419 he_writel(he_dev, 0x203f, G3_INMQ_L);
1420
1421 he_writel(he_dev, 0x004f, G4_INMQ_S);
1422 he_writel(he_dev, 0x204f, G4_INMQ_L);
1423
1424 he_writel(he_dev, 0x005f, G5_INMQ_S);
1425 he_writel(he_dev, 0x205f, G5_INMQ_L);
1426
1427 he_writel(he_dev, 0x006f, G6_INMQ_S);
1428 he_writel(he_dev, 0x206f, G6_INMQ_L);
1429
1430 he_writel(he_dev, 0x007f, G7_INMQ_S);
1431 he_writel(he_dev, 0x207f, G7_INMQ_L);
1432 } else {
1433 he_writel(he_dev, 0x0000, G0_INMQ_S);
1434 he_writel(he_dev, 0x0008, G0_INMQ_L);
1435
1436 he_writel(he_dev, 0x0001, G1_INMQ_S);
1437 he_writel(he_dev, 0x0009, G1_INMQ_L);
1438
1439 he_writel(he_dev, 0x0002, G2_INMQ_S);
1440 he_writel(he_dev, 0x000a, G2_INMQ_L);
1441
1442 he_writel(he_dev, 0x0003, G3_INMQ_S);
1443 he_writel(he_dev, 0x000b, G3_INMQ_L);
1444
1445 he_writel(he_dev, 0x0004, G4_INMQ_S);
1446 he_writel(he_dev, 0x000c, G4_INMQ_L);
1447
1448 he_writel(he_dev, 0x0005, G5_INMQ_S);
1449 he_writel(he_dev, 0x000d, G5_INMQ_L);
1450
1451 he_writel(he_dev, 0x0006, G6_INMQ_S);
1452 he_writel(he_dev, 0x000e, G6_INMQ_L);
1453
1454 he_writel(he_dev, 0x0007, G7_INMQ_S);
1455 he_writel(he_dev, 0x000f, G7_INMQ_L);
1456 }
1457
1458 /* 5.1.6 application tunable parameters */
1459
1460 he_writel(he_dev, 0x0, MCC);
1461 he_writel(he_dev, 0x0, OEC);
1462 he_writel(he_dev, 0x0, DCC);
1463 he_writel(he_dev, 0x0, CEC);
1464
1465 /* 5.1.7 cs block initialization */
1466
1467 he_init_cs_block(he_dev);
1468
1469 /* 5.1.8 cs block connection memory initialization */
1470
1471 if (he_init_cs_block_rcm(he_dev) < 0)
1472 return -ENOMEM;
1473
1474 /* 5.1.10 initialize host structures */
1475
1476 he_init_tpdrq(he_dev);
1477
1478 #ifdef USE_TPD_POOL
1479 he_dev->tpd_pool = pci_pool_create("tpd", he_dev->pci_dev,
1480 sizeof(struct he_tpd), TPD_ALIGNMENT, 0);
1481 if (he_dev->tpd_pool == NULL) {
1482 hprintk("unable to create tpd pci_pool\n");
1483 return -ENOMEM;
1484 }
1485
1486 INIT_LIST_HEAD(&he_dev->outstanding_tpds);
1487 #else
1488 he_dev->tpd_base = (void *) pci_alloc_consistent(he_dev->pci_dev,
1489 CONFIG_NUMTPDS * sizeof(struct he_tpd), &he_dev->tpd_base_phys);
1490 if (!he_dev->tpd_base)
1491 return -ENOMEM;
1492
1493 for (i = 0; i < CONFIG_NUMTPDS; ++i) {
1494 he_dev->tpd_base[i].status = (i << TPD_ADDR_SHIFT);
1495 he_dev->tpd_base[i].inuse = 0;
1496 }
1497
1498 he_dev->tpd_head = he_dev->tpd_base;
1499 he_dev->tpd_end = &he_dev->tpd_base[CONFIG_NUMTPDS - 1];
1500 #endif
1501
1502 if (he_init_group(he_dev, 0) != 0)
1503 return -ENOMEM;
1504
1505 for (group = 1; group < HE_NUM_GROUPS; ++group) {
1506 he_writel(he_dev, 0x0, G0_RBPS_S + (group * 32));
1507 he_writel(he_dev, 0x0, G0_RBPS_T + (group * 32));
1508 he_writel(he_dev, 0x0, G0_RBPS_QI + (group * 32));
1509 he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0),
1510 G0_RBPS_BS + (group * 32));
1511
1512 he_writel(he_dev, 0x0, G0_RBPL_S + (group * 32));
1513 he_writel(he_dev, 0x0, G0_RBPL_T + (group * 32));
1514 he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0),
1515 G0_RBPL_QI + (group * 32));
1516 he_writel(he_dev, 0x0, G0_RBPL_BS + (group * 32));
1517
1518 he_writel(he_dev, 0x0, G0_RBRQ_ST + (group * 16));
1519 he_writel(he_dev, 0x0, G0_RBRQ_H + (group * 16));
1520 he_writel(he_dev, RBRQ_THRESH(0x1) | RBRQ_SIZE(0x0),
1521 G0_RBRQ_Q + (group * 16));
1522 he_writel(he_dev, 0x0, G0_RBRQ_I + (group * 16));
1523
1524 he_writel(he_dev, 0x0, G0_TBRQ_B_T + (group * 16));
1525 he_writel(he_dev, 0x0, G0_TBRQ_H + (group * 16));
1526 he_writel(he_dev, TBRQ_THRESH(0x1),
1527 G0_TBRQ_THRESH + (group * 16));
1528 he_writel(he_dev, 0x0, G0_TBRQ_S + (group * 16));
1529 }
1530
1531 /* host status page */
1532
1533 he_dev->hsp = pci_alloc_consistent(he_dev->pci_dev,
1534 sizeof(struct he_hsp), &he_dev->hsp_phys);
1535 if (he_dev->hsp == NULL) {
1536 hprintk("failed to allocate host status page\n");
1537 return -ENOMEM;
1538 }
1539 memset(he_dev->hsp, 0, sizeof(struct he_hsp));
1540 he_writel(he_dev, he_dev->hsp_phys, HSP_BA);
1541
1542 /* initialize framer */
1543
1544 #ifdef CONFIG_ATM_HE_USE_SUNI
1545 suni_init(he_dev->atm_dev);
1546 if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->start)
1547 he_dev->atm_dev->phy->start(he_dev->atm_dev);
1548 #endif /* CONFIG_ATM_HE_USE_SUNI */
1549
1550 if (sdh) {
1551 /* this really should be in suni.c but for now... */
1552 int val;
1553
1554 val = he_phy_get(he_dev->atm_dev, SUNI_TPOP_APM);
1555 val = (val & ~SUNI_TPOP_APM_S) | (SUNI_TPOP_S_SDH << SUNI_TPOP_APM_S_SHIFT);
1556 he_phy_put(he_dev->atm_dev, val, SUNI_TPOP_APM);
1557 }
1558
1559 /* 5.1.12 enable transmit and receive */
1560
1561 reg = he_readl_mbox(he_dev, CS_ERCTL0);
1562 reg |= TX_ENABLE|ER_ENABLE;
1563 he_writel_mbox(he_dev, reg, CS_ERCTL0);
1564
1565 reg = he_readl(he_dev, RC_CONFIG);
1566 reg |= RX_ENABLE;
1567 he_writel(he_dev, reg, RC_CONFIG);
1568
1569 for (i = 0; i < HE_NUM_CS_STPER; ++i) {
1570 he_dev->cs_stper[i].inuse = 0;
1571 he_dev->cs_stper[i].pcr = -1;
1572 }
1573 he_dev->total_bw = 0;
1574
1575
1576 /* atm linux initialization */
1577
1578 he_dev->atm_dev->ci_range.vpi_bits = he_dev->vpibits;
1579 he_dev->atm_dev->ci_range.vci_bits = he_dev->vcibits;
1580
1581 he_dev->irq_peak = 0;
1582 he_dev->rbrq_peak = 0;
1583 he_dev->rbpl_peak = 0;
1584 he_dev->tbrq_peak = 0;
1585
1586 HPRINTK("hell bent for leather!\n");
1587
1588 return 0;
1589 }
1590
1591 static void
1592 he_stop(struct he_dev *he_dev)
1593 {
1594 u16 command;
1595 u32 gen_cntl_0, reg;
1596 struct pci_dev *pci_dev;
1597
1598 pci_dev = he_dev->pci_dev;
1599
1600 /* disable interrupts */
1601
1602 if (he_dev->membase) {
1603 pci_read_config_dword(pci_dev, GEN_CNTL_0, &gen_cntl_0);
1604 gen_cntl_0 &= ~(INT_PROC_ENBL | INIT_ENB);
1605 pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0);
1606
1607 #ifdef USE_TASKLET
1608 tasklet_disable(&he_dev->tasklet);
1609 #endif
1610
1611 /* disable recv and transmit */
1612
1613 reg = he_readl_mbox(he_dev, CS_ERCTL0);
1614 reg &= ~(TX_ENABLE|ER_ENABLE);
1615 he_writel_mbox(he_dev, reg, CS_ERCTL0);
1616
1617 reg = he_readl(he_dev, RC_CONFIG);
1618 reg &= ~(RX_ENABLE);
1619 he_writel(he_dev, reg, RC_CONFIG);
1620 }
1621
1622 #ifdef CONFIG_ATM_HE_USE_SUNI
1623 if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->stop)
1624 he_dev->atm_dev->phy->stop(he_dev->atm_dev);
1625 #endif /* CONFIG_ATM_HE_USE_SUNI */
1626
1627 if (he_dev->irq)
1628 free_irq(he_dev->irq, he_dev);
1629
1630 if (he_dev->irq_base)
1631 pci_free_consistent(he_dev->pci_dev, (CONFIG_IRQ_SIZE+1)
1632 * sizeof(struct he_irq), he_dev->irq_base, he_dev->irq_phys);
1633
1634 if (he_dev->hsp)
1635 pci_free_consistent(he_dev->pci_dev, sizeof(struct he_hsp),
1636 he_dev->hsp, he_dev->hsp_phys);
1637
1638 if (he_dev->rbpl_base) {
1639 #ifdef USE_RBPL_POOL
1640 int i;
1641
1642 for (i = 0; i < CONFIG_RBPL_SIZE; ++i) {
1643 void *cpuaddr = he_dev->rbpl_virt[i].virt;
1644 dma_addr_t dma_handle = he_dev->rbpl_base[i].phys;
1645
1646 pci_pool_free(he_dev->rbpl_pool, cpuaddr, dma_handle);
1647 }
1648 #else
1649 pci_free_consistent(he_dev->pci_dev, CONFIG_RBPL_SIZE
1650 * CONFIG_RBPL_BUFSIZE, he_dev->rbpl_pages, he_dev->rbpl_pages_phys);
1651 #endif
1652 pci_free_consistent(he_dev->pci_dev, CONFIG_RBPL_SIZE
1653 * sizeof(struct he_rbp), he_dev->rbpl_base, he_dev->rbpl_phys);
1654 }
1655
1656 #ifdef USE_RBPL_POOL
1657 if (he_dev->rbpl_pool)
1658 pci_pool_destroy(he_dev->rbpl_pool);
1659 #endif
1660
1661 #ifdef USE_RBPS
1662 if (he_dev->rbps_base) {
1663 #ifdef USE_RBPS_POOL
1664 int i;
1665
1666 for (i = 0; i < CONFIG_RBPS_SIZE; ++i) {
1667 void *cpuaddr = he_dev->rbps_virt[i].virt;
1668 dma_addr_t dma_handle = he_dev->rbps_base[i].phys;
1669
1670 pci_pool_free(he_dev->rbps_pool, cpuaddr, dma_handle);
1671 }
1672 #else
1673 pci_free_consistent(he_dev->pci_dev, CONFIG_RBPS_SIZE
1674 * CONFIG_RBPS_BUFSIZE, he_dev->rbps_pages, he_dev->rbps_pages_phys);
1675 #endif
1676 pci_free_consistent(he_dev->pci_dev, CONFIG_RBPS_SIZE
1677 * sizeof(struct he_rbp), he_dev->rbps_base, he_dev->rbps_phys);
1678 }
1679
1680 #ifdef USE_RBPS_POOL
1681 if (he_dev->rbps_pool)
1682 pci_pool_destroy(he_dev->rbps_pool);
1683 #endif
1684
1685 #endif /* USE_RBPS */
1686
1687 if (he_dev->rbrq_base)
1688 pci_free_consistent(he_dev->pci_dev, CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq),
1689 he_dev->rbrq_base, he_dev->rbrq_phys);
1690
1691 if (he_dev->tbrq_base)
1692 pci_free_consistent(he_dev->pci_dev, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq),
1693 he_dev->tbrq_base, he_dev->tbrq_phys);
1694
1695 if (he_dev->tpdrq_base)
1696 pci_free_consistent(he_dev->pci_dev, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq),
1697 he_dev->tpdrq_base, he_dev->tpdrq_phys);
1698
1699 #ifdef USE_TPD_POOL
1700 if (he_dev->tpd_pool)
1701 pci_pool_destroy(he_dev->tpd_pool);
1702 #else
1703 if (he_dev->tpd_base)
1704 pci_free_consistent(he_dev->pci_dev, CONFIG_NUMTPDS * sizeof(struct he_tpd),
1705 he_dev->tpd_base, he_dev->tpd_base_phys);
1706 #endif
1707
1708 if (he_dev->pci_dev) {
1709 pci_read_config_word(he_dev->pci_dev, PCI_COMMAND, &command);
1710 command &= ~(PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
1711 pci_write_config_word(he_dev->pci_dev, PCI_COMMAND, command);
1712 }
1713
1714 if (he_dev->membase)
1715 iounmap(he_dev->membase);
1716 }
1717
1718 static struct he_tpd *
1719 __alloc_tpd(struct he_dev *he_dev)
1720 {
1721 #ifdef USE_TPD_POOL
1722 struct he_tpd *tpd;
1723 dma_addr_t dma_handle;
1724
1725 tpd = pci_pool_alloc(he_dev->tpd_pool, GFP_ATOMIC|GFP_DMA, &dma_handle);
1726 if (tpd == NULL)
1727 return NULL;
1728
1729 tpd->status = TPD_ADDR(dma_handle);
1730 tpd->reserved = 0;
1731 tpd->iovec[0].addr = 0; tpd->iovec[0].len = 0;
1732 tpd->iovec[1].addr = 0; tpd->iovec[1].len = 0;
1733 tpd->iovec[2].addr = 0; tpd->iovec[2].len = 0;
1734
1735 return tpd;
1736 #else
1737 int i;
1738
1739 for (i = 0; i < CONFIG_NUMTPDS; ++i) {
1740 ++he_dev->tpd_head;
1741 if (he_dev->tpd_head > he_dev->tpd_end) {
1742 he_dev->tpd_head = he_dev->tpd_base;
1743 }
1744
1745 if (!he_dev->tpd_head->inuse) {
1746 he_dev->tpd_head->inuse = 1;
1747 he_dev->tpd_head->status &= TPD_MASK;
1748 he_dev->tpd_head->iovec[0].addr = 0; he_dev->tpd_head->iovec[0].len = 0;
1749 he_dev->tpd_head->iovec[1].addr = 0; he_dev->tpd_head->iovec[1].len = 0;
1750 he_dev->tpd_head->iovec[2].addr = 0; he_dev->tpd_head->iovec[2].len = 0;
1751 return he_dev->tpd_head;
1752 }
1753 }
1754 hprintk("out of tpds -- increase CONFIG_NUMTPDS (%d)\n", CONFIG_NUMTPDS);
1755 return NULL;
1756 #endif
1757 }
1758
1759 #define AAL5_LEN(buf,len) \
1760 ((((unsigned char *)(buf))[(len)-6] << 8) | \
1761 (((unsigned char *)(buf))[(len)-5]))
1762
1763 /* 2.10.1.2 receive
1764 *
1765 * aal5 packets can optionally return the tcp checksum in the lower
1766 * 16 bits of the crc (RSR0_TCP_CKSUM)
1767 */
1768
1769 #define TCP_CKSUM(buf,len) \
1770 ((((unsigned char *)(buf))[(len)-2] << 8) | \
1771 (((unsigned char *)(buf))[(len-1)]))
1772
1773 static int
1774 he_service_rbrq(struct he_dev *he_dev, int group)
1775 {
1776 struct he_rbrq *rbrq_tail = (struct he_rbrq *)
1777 ((unsigned long)he_dev->rbrq_base |
1778 he_dev->hsp->group[group].rbrq_tail);
1779 struct he_rbp *rbp = NULL;
1780 unsigned cid, lastcid = -1;
1781 unsigned buf_len = 0;
1782 struct sk_buff *skb;
1783 struct atm_vcc *vcc = NULL;
1784 struct he_vcc *he_vcc;
1785 struct he_iovec *iov;
1786 int pdus_assembled = 0;
1787 int updated = 0;
1788
1789 read_lock(&vcc_sklist_lock);
1790 while (he_dev->rbrq_head != rbrq_tail) {
1791 ++updated;
1792
1793 HPRINTK("%p rbrq%d 0x%x len=%d cid=0x%x %s%s%s%s%s%s\n",
1794 he_dev->rbrq_head, group,
1795 RBRQ_ADDR(he_dev->rbrq_head),
1796 RBRQ_BUFLEN(he_dev->rbrq_head),
1797 RBRQ_CID(he_dev->rbrq_head),
1798 RBRQ_CRC_ERR(he_dev->rbrq_head) ? " CRC_ERR" : "",
1799 RBRQ_LEN_ERR(he_dev->rbrq_head) ? " LEN_ERR" : "",
1800 RBRQ_END_PDU(he_dev->rbrq_head) ? " END_PDU" : "",
1801 RBRQ_AAL5_PROT(he_dev->rbrq_head) ? " AAL5_PROT" : "",
1802 RBRQ_CON_CLOSED(he_dev->rbrq_head) ? " CON_CLOSED" : "",
1803 RBRQ_HBUF_ERR(he_dev->rbrq_head) ? " HBUF_ERR" : "");
1804
1805 #ifdef USE_RBPS
1806 if (RBRQ_ADDR(he_dev->rbrq_head) & RBP_SMALLBUF)
1807 rbp = &he_dev->rbps_base[RBP_INDEX(RBRQ_ADDR(he_dev->rbrq_head))];
1808 else
1809 #endif
1810 rbp = &he_dev->rbpl_base[RBP_INDEX(RBRQ_ADDR(he_dev->rbrq_head))];
1811
1812 buf_len = RBRQ_BUFLEN(he_dev->rbrq_head) * 4;
1813 cid = RBRQ_CID(he_dev->rbrq_head);
1814
1815 if (cid != lastcid)
1816 vcc = __find_vcc(he_dev, cid);
1817 lastcid = cid;
1818
1819 if (vcc == NULL) {
1820 hprintk("vcc == NULL (cid 0x%x)\n", cid);
1821 if (!RBRQ_HBUF_ERR(he_dev->rbrq_head))
1822 rbp->status &= ~RBP_LOANED;
1823
1824 goto next_rbrq_entry;
1825 }
1826
1827 he_vcc = HE_VCC(vcc);
1828 if (he_vcc == NULL) {
1829 hprintk("he_vcc == NULL (cid 0x%x)\n", cid);
1830 if (!RBRQ_HBUF_ERR(he_dev->rbrq_head))
1831 rbp->status &= ~RBP_LOANED;
1832 goto next_rbrq_entry;
1833 }
1834
1835 if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) {
1836 hprintk("HBUF_ERR! (cid 0x%x)\n", cid);
1837 atomic_inc(&vcc->stats->rx_drop);
1838 goto return_host_buffers;
1839 }
1840
1841 he_vcc->iov_tail->iov_base = RBRQ_ADDR(he_dev->rbrq_head);
1842 he_vcc->iov_tail->iov_len = buf_len;
1843 he_vcc->pdu_len += buf_len;
1844 ++he_vcc->iov_tail;
1845
1846 if (RBRQ_CON_CLOSED(he_dev->rbrq_head)) {
1847 lastcid = -1;
1848 HPRINTK("wake_up rx_waitq (cid 0x%x)\n", cid);
1849 wake_up(&he_vcc->rx_waitq);
1850 goto return_host_buffers;
1851 }
1852
1853 #ifdef notdef
1854 if ((he_vcc->iov_tail - he_vcc->iov_head) > HE_MAXIOV) {
1855 hprintk("iovec full! cid 0x%x\n", cid);
1856 goto return_host_buffers;
1857 }
1858 #endif
1859 if (!RBRQ_END_PDU(he_dev->rbrq_head))
1860 goto next_rbrq_entry;
1861
1862 if (RBRQ_LEN_ERR(he_dev->rbrq_head)
1863 || RBRQ_CRC_ERR(he_dev->rbrq_head)) {
1864 HPRINTK("%s%s (%d.%d)\n",
1865 RBRQ_CRC_ERR(he_dev->rbrq_head)
1866 ? "CRC_ERR " : "",
1867 RBRQ_LEN_ERR(he_dev->rbrq_head)
1868 ? "LEN_ERR" : "",
1869 vcc->vpi, vcc->vci);
1870 atomic_inc(&vcc->stats->rx_err);
1871 goto return_host_buffers;
1872 }
1873
1874 skb = atm_alloc_charge(vcc, he_vcc->pdu_len + rx_skb_reserve,
1875 GFP_ATOMIC);
1876 if (!skb) {
1877 HPRINTK("charge failed (%d.%d)\n", vcc->vpi, vcc->vci);
1878 goto return_host_buffers;
1879 }
1880
1881 if (rx_skb_reserve > 0)
1882 skb_reserve(skb, rx_skb_reserve);
1883
1884 __net_timestamp(skb);
1885
1886 for (iov = he_vcc->iov_head;
1887 iov < he_vcc->iov_tail; ++iov) {
1888 #ifdef USE_RBPS
1889 if (iov->iov_base & RBP_SMALLBUF)
1890 memcpy(skb_put(skb, iov->iov_len),
1891 he_dev->rbps_virt[RBP_INDEX(iov->iov_base)].virt, iov->iov_len);
1892 else
1893 #endif
1894 memcpy(skb_put(skb, iov->iov_len),
1895 he_dev->rbpl_virt[RBP_INDEX(iov->iov_base)].virt, iov->iov_len);
1896 }
1897
1898 switch (vcc->qos.aal) {
1899 case ATM_AAL0:
1900 /* 2.10.1.5 raw cell receive */
1901 skb->len = ATM_AAL0_SDU;
1902 skb_set_tail_pointer(skb, skb->len);
1903 break;
1904 case ATM_AAL5:
1905 /* 2.10.1.2 aal5 receive */
1906
1907 skb->len = AAL5_LEN(skb->data, he_vcc->pdu_len);
1908 skb_set_tail_pointer(skb, skb->len);
1909 #ifdef USE_CHECKSUM_HW
1910 if (vcc->vpi == 0 && vcc->vci >= ATM_NOT_RSV_VCI) {
1911 skb->ip_summed = CHECKSUM_COMPLETE;
1912 skb->csum = TCP_CKSUM(skb->data,
1913 he_vcc->pdu_len);
1914 }
1915 #endif
1916 break;
1917 }
1918
1919 #ifdef should_never_happen
1920 if (skb->len > vcc->qos.rxtp.max_sdu)
1921 hprintk("pdu_len (%d) > vcc->qos.rxtp.max_sdu (%d)! cid 0x%x\n", skb->len, vcc->qos.rxtp.max_sdu, cid);
1922 #endif
1923
1924 #ifdef notdef
1925 ATM_SKB(skb)->vcc = vcc;
1926 #endif
1927 spin_unlock(&he_dev->global_lock);
1928 vcc->push(vcc, skb);
1929 spin_lock(&he_dev->global_lock);
1930
1931 atomic_inc(&vcc->stats->rx);
1932
1933 return_host_buffers:
1934 ++pdus_assembled;
1935
1936 for (iov = he_vcc->iov_head;
1937 iov < he_vcc->iov_tail; ++iov) {
1938 #ifdef USE_RBPS
1939 if (iov->iov_base & RBP_SMALLBUF)
1940 rbp = &he_dev->rbps_base[RBP_INDEX(iov->iov_base)];
1941 else
1942 #endif
1943 rbp = &he_dev->rbpl_base[RBP_INDEX(iov->iov_base)];
1944
1945 rbp->status &= ~RBP_LOANED;
1946 }
1947
1948 he_vcc->iov_tail = he_vcc->iov_head;
1949 he_vcc->pdu_len = 0;
1950
1951 next_rbrq_entry:
1952 he_dev->rbrq_head = (struct he_rbrq *)
1953 ((unsigned long) he_dev->rbrq_base |
1954 RBRQ_MASK(++he_dev->rbrq_head));
1955
1956 }
1957 read_unlock(&vcc_sklist_lock);
1958
1959 if (updated) {
1960 if (updated > he_dev->rbrq_peak)
1961 he_dev->rbrq_peak = updated;
1962
1963 he_writel(he_dev, RBRQ_MASK(he_dev->rbrq_head),
1964 G0_RBRQ_H + (group * 16));
1965 }
1966
1967 return pdus_assembled;
1968 }
1969
1970 static void
1971 he_service_tbrq(struct he_dev *he_dev, int group)
1972 {
1973 struct he_tbrq *tbrq_tail = (struct he_tbrq *)
1974 ((unsigned long)he_dev->tbrq_base |
1975 he_dev->hsp->group[group].tbrq_tail);
1976 struct he_tpd *tpd;
1977 int slot, updated = 0;
1978 #ifdef USE_TPD_POOL
1979 struct he_tpd *__tpd;
1980 #endif
1981
1982 /* 2.1.6 transmit buffer return queue */
1983
1984 while (he_dev->tbrq_head != tbrq_tail) {
1985 ++updated;
1986
1987 HPRINTK("tbrq%d 0x%x%s%s\n",
1988 group,
1989 TBRQ_TPD(he_dev->tbrq_head),
1990 TBRQ_EOS(he_dev->tbrq_head) ? " EOS" : "",
1991 TBRQ_MULTIPLE(he_dev->tbrq_head) ? " MULTIPLE" : "");
1992 #ifdef USE_TPD_POOL
1993 tpd = NULL;
1994 list_for_each_entry(__tpd, &he_dev->outstanding_tpds, entry) {
1995 if (TPD_ADDR(__tpd->status) == TBRQ_TPD(he_dev->tbrq_head)) {
1996 tpd = __tpd;
1997 list_del(&__tpd->entry);
1998 break;
1999 }
2000 }
2001
2002 if (tpd == NULL) {
2003 hprintk("unable to locate tpd for dma buffer %x\n",
2004 TBRQ_TPD(he_dev->tbrq_head));
2005 goto next_tbrq_entry;
2006 }
2007 #else
2008 tpd = &he_dev->tpd_base[ TPD_INDEX(TBRQ_TPD(he_dev->tbrq_head)) ];
2009 #endif
2010
2011 if (TBRQ_EOS(he_dev->tbrq_head)) {
2012 HPRINTK("wake_up(tx_waitq) cid 0x%x\n",
2013 he_mkcid(he_dev, tpd->vcc->vpi, tpd->vcc->vci));
2014 if (tpd->vcc)
2015 wake_up(&HE_VCC(tpd->vcc)->tx_waitq);
2016
2017 goto next_tbrq_entry;
2018 }
2019
2020 for (slot = 0; slot < TPD_MAXIOV; ++slot) {
2021 if (tpd->iovec[slot].addr)
2022 pci_unmap_single(he_dev->pci_dev,
2023 tpd->iovec[slot].addr,
2024 tpd->iovec[slot].len & TPD_LEN_MASK,
2025 PCI_DMA_TODEVICE);
2026 if (tpd->iovec[slot].len & TPD_LST)
2027 break;
2028
2029 }
2030
2031 if (tpd->skb) { /* && !TBRQ_MULTIPLE(he_dev->tbrq_head) */
2032 if (tpd->vcc && tpd->vcc->pop)
2033 tpd->vcc->pop(tpd->vcc, tpd->skb);
2034 else
2035 dev_kfree_skb_any(tpd->skb);
2036 }
2037
2038 next_tbrq_entry:
2039 #ifdef USE_TPD_POOL
2040 if (tpd)
2041 pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status));
2042 #else
2043 tpd->inuse = 0;
2044 #endif
2045 he_dev->tbrq_head = (struct he_tbrq *)
2046 ((unsigned long) he_dev->tbrq_base |
2047 TBRQ_MASK(++he_dev->tbrq_head));
2048 }
2049
2050 if (updated) {
2051 if (updated > he_dev->tbrq_peak)
2052 he_dev->tbrq_peak = updated;
2053
2054 he_writel(he_dev, TBRQ_MASK(he_dev->tbrq_head),
2055 G0_TBRQ_H + (group * 16));
2056 }
2057 }
2058
2059
2060 static void
2061 he_service_rbpl(struct he_dev *he_dev, int group)
2062 {
2063 struct he_rbp *newtail;
2064 struct he_rbp *rbpl_head;
2065 int moved = 0;
2066
2067 rbpl_head = (struct he_rbp *) ((unsigned long)he_dev->rbpl_base |
2068 RBPL_MASK(he_readl(he_dev, G0_RBPL_S)));
2069
2070 for (;;) {
2071 newtail = (struct he_rbp *) ((unsigned long)he_dev->rbpl_base |
2072 RBPL_MASK(he_dev->rbpl_tail+1));
2073
2074 /* table 3.42 -- rbpl_tail should never be set to rbpl_head */
2075 if ((newtail == rbpl_head) || (newtail->status & RBP_LOANED))
2076 break;
2077
2078 newtail->status |= RBP_LOANED;
2079 he_dev->rbpl_tail = newtail;
2080 ++moved;
2081 }
2082
2083 if (moved)
2084 he_writel(he_dev, RBPL_MASK(he_dev->rbpl_tail), G0_RBPL_T);
2085 }
2086
2087 #ifdef USE_RBPS
2088 static void
2089 he_service_rbps(struct he_dev *he_dev, int group)
2090 {
2091 struct he_rbp *newtail;
2092 struct he_rbp *rbps_head;
2093 int moved = 0;
2094
2095 rbps_head = (struct he_rbp *) ((unsigned long)he_dev->rbps_base |
2096 RBPS_MASK(he_readl(he_dev, G0_RBPS_S)));
2097
2098 for (;;) {
2099 newtail = (struct he_rbp *) ((unsigned long)he_dev->rbps_base |
2100 RBPS_MASK(he_dev->rbps_tail+1));
2101
2102 /* table 3.42 -- rbps_tail should never be set to rbps_head */
2103 if ((newtail == rbps_head) || (newtail->status & RBP_LOANED))
2104 break;
2105
2106 newtail->status |= RBP_LOANED;
2107 he_dev->rbps_tail = newtail;
2108 ++moved;
2109 }
2110
2111 if (moved)
2112 he_writel(he_dev, RBPS_MASK(he_dev->rbps_tail), G0_RBPS_T);
2113 }
2114 #endif /* USE_RBPS */
2115
2116 static void
2117 he_tasklet(unsigned long data)
2118 {
2119 unsigned long flags;
2120 struct he_dev *he_dev = (struct he_dev *) data;
2121 int group, type;
2122 int updated = 0;
2123
2124 HPRINTK("tasklet (0x%lx)\n", data);
2125 #ifdef USE_TASKLET
2126 spin_lock_irqsave(&he_dev->global_lock, flags);
2127 #endif
2128
2129 while (he_dev->irq_head != he_dev->irq_tail) {
2130 ++updated;
2131
2132 type = ITYPE_TYPE(he_dev->irq_head->isw);
2133 group = ITYPE_GROUP(he_dev->irq_head->isw);
2134
2135 switch (type) {
2136 case ITYPE_RBRQ_THRESH:
2137 HPRINTK("rbrq%d threshold\n", group);
2138 /* fall through */
2139 case ITYPE_RBRQ_TIMER:
2140 if (he_service_rbrq(he_dev, group)) {
2141 he_service_rbpl(he_dev, group);
2142 #ifdef USE_RBPS
2143 he_service_rbps(he_dev, group);
2144 #endif /* USE_RBPS */
2145 }
2146 break;
2147 case ITYPE_TBRQ_THRESH:
2148 HPRINTK("tbrq%d threshold\n", group);
2149 /* fall through */
2150 case ITYPE_TPD_COMPLETE:
2151 he_service_tbrq(he_dev, group);
2152 break;
2153 case ITYPE_RBPL_THRESH:
2154 he_service_rbpl(he_dev, group);
2155 break;
2156 case ITYPE_RBPS_THRESH:
2157 #ifdef USE_RBPS
2158 he_service_rbps(he_dev, group);
2159 #endif /* USE_RBPS */
2160 break;
2161 case ITYPE_PHY:
2162 HPRINTK("phy interrupt\n");
2163 #ifdef CONFIG_ATM_HE_USE_SUNI
2164 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2165 if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->interrupt)
2166 he_dev->atm_dev->phy->interrupt(he_dev->atm_dev);
2167 spin_lock_irqsave(&he_dev->global_lock, flags);
2168 #endif
2169 break;
2170 case ITYPE_OTHER:
2171 switch (type|group) {
2172 case ITYPE_PARITY:
2173 hprintk("parity error\n");
2174 break;
2175 case ITYPE_ABORT:
2176 hprintk("abort 0x%x\n", he_readl(he_dev, ABORT_ADDR));
2177 break;
2178 }
2179 break;
2180 case ITYPE_TYPE(ITYPE_INVALID):
2181 /* see 8.1.1 -- check all queues */
2182
2183 HPRINTK("isw not updated 0x%x\n", he_dev->irq_head->isw);
2184
2185 he_service_rbrq(he_dev, 0);
2186 he_service_rbpl(he_dev, 0);
2187 #ifdef USE_RBPS
2188 he_service_rbps(he_dev, 0);
2189 #endif /* USE_RBPS */
2190 he_service_tbrq(he_dev, 0);
2191 break;
2192 default:
2193 hprintk("bad isw 0x%x?\n", he_dev->irq_head->isw);
2194 }
2195
2196 he_dev->irq_head->isw = ITYPE_INVALID;
2197
2198 he_dev->irq_head = (struct he_irq *) NEXT_ENTRY(he_dev->irq_base, he_dev->irq_head, IRQ_MASK);
2199 }
2200
2201 if (updated) {
2202 if (updated > he_dev->irq_peak)
2203 he_dev->irq_peak = updated;
2204
2205 he_writel(he_dev,
2206 IRQ_SIZE(CONFIG_IRQ_SIZE) |
2207 IRQ_THRESH(CONFIG_IRQ_THRESH) |
2208 IRQ_TAIL(he_dev->irq_tail), IRQ0_HEAD);
2209 (void) he_readl(he_dev, INT_FIFO); /* 8.1.2 controller errata; flush posted writes */
2210 }
2211 #ifdef USE_TASKLET
2212 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2213 #endif
2214 }
2215
2216 static irqreturn_t
2217 he_irq_handler(int irq, void *dev_id)
2218 {
2219 unsigned long flags;
2220 struct he_dev *he_dev = (struct he_dev * )dev_id;
2221 int handled = 0;
2222
2223 if (he_dev == NULL)
2224 return IRQ_NONE;
2225
2226 spin_lock_irqsave(&he_dev->global_lock, flags);
2227
2228 he_dev->irq_tail = (struct he_irq *) (((unsigned long)he_dev->irq_base) |
2229 (*he_dev->irq_tailoffset << 2));
2230
2231 if (he_dev->irq_tail == he_dev->irq_head) {
2232 HPRINTK("tailoffset not updated?\n");
2233 he_dev->irq_tail = (struct he_irq *) ((unsigned long)he_dev->irq_base |
2234 ((he_readl(he_dev, IRQ0_BASE) & IRQ_MASK) << 2));
2235 (void) he_readl(he_dev, INT_FIFO); /* 8.1.2 controller errata */
2236 }
2237
2238 #ifdef DEBUG
2239 if (he_dev->irq_head == he_dev->irq_tail /* && !IRQ_PENDING */)
2240 hprintk("spurious (or shared) interrupt?\n");
2241 #endif
2242
2243 if (he_dev->irq_head != he_dev->irq_tail) {
2244 handled = 1;
2245 #ifdef USE_TASKLET
2246 tasklet_schedule(&he_dev->tasklet);
2247 #else
2248 he_tasklet((unsigned long) he_dev);
2249 #endif
2250 he_writel(he_dev, INT_CLEAR_A, INT_FIFO); /* clear interrupt */
2251 (void) he_readl(he_dev, INT_FIFO); /* flush posted writes */
2252 }
2253 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2254 return IRQ_RETVAL(handled);
2255
2256 }
2257
2258 static __inline__ void
2259 __enqueue_tpd(struct he_dev *he_dev, struct he_tpd *tpd, unsigned cid)
2260 {
2261 struct he_tpdrq *new_tail;
2262
2263 HPRINTK("tpdrq %p cid 0x%x -> tpdrq_tail %p\n",
2264 tpd, cid, he_dev->tpdrq_tail);
2265
2266 /* new_tail = he_dev->tpdrq_tail; */
2267 new_tail = (struct he_tpdrq *) ((unsigned long) he_dev->tpdrq_base |
2268 TPDRQ_MASK(he_dev->tpdrq_tail+1));
2269
2270 /*
2271 * check to see if we are about to set the tail == head
2272 * if true, update the head pointer from the adapter
2273 * to see if this is really the case (reading the queue
2274 * head for every enqueue would be unnecessarily slow)
2275 */
2276
2277 if (new_tail == he_dev->tpdrq_head) {
2278 he_dev->tpdrq_head = (struct he_tpdrq *)
2279 (((unsigned long)he_dev->tpdrq_base) |
2280 TPDRQ_MASK(he_readl(he_dev, TPDRQ_B_H)));
2281
2282 if (new_tail == he_dev->tpdrq_head) {
2283 int slot;
2284
2285 hprintk("tpdrq full (cid 0x%x)\n", cid);
2286 /*
2287 * FIXME
2288 * push tpd onto a transmit backlog queue
2289 * after service_tbrq, service the backlog
2290 * for now, we just drop the pdu
2291 */
2292 for (slot = 0; slot < TPD_MAXIOV; ++slot) {
2293 if (tpd->iovec[slot].addr)
2294 pci_unmap_single(he_dev->pci_dev,
2295 tpd->iovec[slot].addr,
2296 tpd->iovec[slot].len & TPD_LEN_MASK,
2297 PCI_DMA_TODEVICE);
2298 }
2299 if (tpd->skb) {
2300 if (tpd->vcc->pop)
2301 tpd->vcc->pop(tpd->vcc, tpd->skb);
2302 else
2303 dev_kfree_skb_any(tpd->skb);
2304 atomic_inc(&tpd->vcc->stats->tx_err);
2305 }
2306 #ifdef USE_TPD_POOL
2307 pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status));
2308 #else
2309 tpd->inuse = 0;
2310 #endif
2311 return;
2312 }
2313 }
2314
2315 /* 2.1.5 transmit packet descriptor ready queue */
2316 #ifdef USE_TPD_POOL
2317 list_add_tail(&tpd->entry, &he_dev->outstanding_tpds);
2318 he_dev->tpdrq_tail->tpd = TPD_ADDR(tpd->status);
2319 #else
2320 he_dev->tpdrq_tail->tpd = he_dev->tpd_base_phys +
2321 (TPD_INDEX(tpd->status) * sizeof(struct he_tpd));
2322 #endif
2323 he_dev->tpdrq_tail->cid = cid;
2324 wmb();
2325
2326 he_dev->tpdrq_tail = new_tail;
2327
2328 he_writel(he_dev, TPDRQ_MASK(he_dev->tpdrq_tail), TPDRQ_T);
2329 (void) he_readl(he_dev, TPDRQ_T); /* flush posted writes */
2330 }
2331
2332 static int
2333 he_open(struct atm_vcc *vcc)
2334 {
2335 unsigned long flags;
2336 struct he_dev *he_dev = HE_DEV(vcc->dev);
2337 struct he_vcc *he_vcc;
2338 int err = 0;
2339 unsigned cid, rsr0, rsr1, rsr4, tsr0, tsr0_aal, tsr4, period, reg, clock;
2340 short vpi = vcc->vpi;
2341 int vci = vcc->vci;
2342
2343 if (vci == ATM_VCI_UNSPEC || vpi == ATM_VPI_UNSPEC)
2344 return 0;
2345
2346 HPRINTK("open vcc %p %d.%d\n", vcc, vpi, vci);
2347
2348 set_bit(ATM_VF_ADDR, &vcc->flags);
2349
2350 cid = he_mkcid(he_dev, vpi, vci);
2351
2352 he_vcc = kmalloc(sizeof(struct he_vcc), GFP_ATOMIC);
2353 if (he_vcc == NULL) {
2354 hprintk("unable to allocate he_vcc during open\n");
2355 return -ENOMEM;
2356 }
2357
2358 he_vcc->iov_tail = he_vcc->iov_head;
2359 he_vcc->pdu_len = 0;
2360 he_vcc->rc_index = -1;
2361
2362 init_waitqueue_head(&he_vcc->rx_waitq);
2363 init_waitqueue_head(&he_vcc->tx_waitq);
2364
2365 vcc->dev_data = he_vcc;
2366
2367 if (vcc->qos.txtp.traffic_class != ATM_NONE) {
2368 int pcr_goal;
2369
2370 pcr_goal = atm_pcr_goal(&vcc->qos.txtp);
2371 if (pcr_goal == 0)
2372 pcr_goal = he_dev->atm_dev->link_rate;
2373 if (pcr_goal < 0) /* means round down, technically */
2374 pcr_goal = -pcr_goal;
2375
2376 HPRINTK("open tx cid 0x%x pcr_goal %d\n", cid, pcr_goal);
2377
2378 switch (vcc->qos.aal) {
2379 case ATM_AAL5:
2380 tsr0_aal = TSR0_AAL5;
2381 tsr4 = TSR4_AAL5;
2382 break;
2383 case ATM_AAL0:
2384 tsr0_aal = TSR0_AAL0_SDU;
2385 tsr4 = TSR4_AAL0_SDU;
2386 break;
2387 default:
2388 err = -EINVAL;
2389 goto open_failed;
2390 }
2391
2392 spin_lock_irqsave(&he_dev->global_lock, flags);
2393 tsr0 = he_readl_tsr0(he_dev, cid);
2394 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2395
2396 if (TSR0_CONN_STATE(tsr0) != 0) {
2397 hprintk("cid 0x%x not idle (tsr0 = 0x%x)\n", cid, tsr0);
2398 err = -EBUSY;
2399 goto open_failed;
2400 }
2401
2402 switch (vcc->qos.txtp.traffic_class) {
2403 case ATM_UBR:
2404 /* 2.3.3.1 open connection ubr */
2405
2406 tsr0 = TSR0_UBR | TSR0_GROUP(0) | tsr0_aal |
2407 TSR0_USE_WMIN | TSR0_UPDATE_GER;
2408 break;
2409
2410 case ATM_CBR:
2411 /* 2.3.3.2 open connection cbr */
2412
2413 /* 8.2.3 cbr scheduler wrap problem -- limit to 90% total link rate */
2414 if ((he_dev->total_bw + pcr_goal)
2415 > (he_dev->atm_dev->link_rate * 9 / 10))
2416 {
2417 err = -EBUSY;
2418 goto open_failed;
2419 }
2420
2421 spin_lock_irqsave(&he_dev->global_lock, flags); /* also protects he_dev->cs_stper[] */
2422
2423 /* find an unused cs_stper register */
2424 for (reg = 0; reg < HE_NUM_CS_STPER; ++reg)
2425 if (he_dev->cs_stper[reg].inuse == 0 ||
2426 he_dev->cs_stper[reg].pcr == pcr_goal)
2427 break;
2428
2429 if (reg == HE_NUM_CS_STPER) {
2430 err = -EBUSY;
2431 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2432 goto open_failed;
2433 }
2434
2435 he_dev->total_bw += pcr_goal;
2436
2437 he_vcc->rc_index = reg;
2438 ++he_dev->cs_stper[reg].inuse;
2439 he_dev->cs_stper[reg].pcr = pcr_goal;
2440
2441 clock = he_is622(he_dev) ? 66667000 : 50000000;
2442 period = clock / pcr_goal;
2443
2444 HPRINTK("rc_index = %d period = %d\n",
2445 reg, period);
2446
2447 he_writel_mbox(he_dev, rate_to_atmf(period/2),
2448 CS_STPER0 + reg);
2449 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2450
2451 tsr0 = TSR0_CBR | TSR0_GROUP(0) | tsr0_aal |
2452 TSR0_RC_INDEX(reg);
2453
2454 break;
2455 default:
2456 err = -EINVAL;
2457 goto open_failed;
2458 }
2459
2460 spin_lock_irqsave(&he_dev->global_lock, flags);
2461
2462 he_writel_tsr0(he_dev, tsr0, cid);
2463 he_writel_tsr4(he_dev, tsr4 | 1, cid);
2464 he_writel_tsr1(he_dev, TSR1_MCR(rate_to_atmf(0)) |
2465 TSR1_PCR(rate_to_atmf(pcr_goal)), cid);
2466 he_writel_tsr2(he_dev, TSR2_ACR(rate_to_atmf(pcr_goal)), cid);
2467 he_writel_tsr9(he_dev, TSR9_OPEN_CONN, cid);
2468
2469 he_writel_tsr3(he_dev, 0x0, cid);
2470 he_writel_tsr5(he_dev, 0x0, cid);
2471 he_writel_tsr6(he_dev, 0x0, cid);
2472 he_writel_tsr7(he_dev, 0x0, cid);
2473 he_writel_tsr8(he_dev, 0x0, cid);
2474 he_writel_tsr10(he_dev, 0x0, cid);
2475 he_writel_tsr11(he_dev, 0x0, cid);
2476 he_writel_tsr12(he_dev, 0x0, cid);
2477 he_writel_tsr13(he_dev, 0x0, cid);
2478 he_writel_tsr14(he_dev, 0x0, cid);
2479 (void) he_readl_tsr0(he_dev, cid); /* flush posted writes */
2480 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2481 }
2482
2483 if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
2484 unsigned aal;
2485
2486 HPRINTK("open rx cid 0x%x (rx_waitq %p)\n", cid,
2487 &HE_VCC(vcc)->rx_waitq);
2488
2489 switch (vcc->qos.aal) {
2490 case ATM_AAL5:
2491 aal = RSR0_AAL5;
2492 break;
2493 case ATM_AAL0:
2494 aal = RSR0_RAWCELL;
2495 break;
2496 default:
2497 err = -EINVAL;
2498 goto open_failed;
2499 }
2500
2501 spin_lock_irqsave(&he_dev->global_lock, flags);
2502
2503 rsr0 = he_readl_rsr0(he_dev, cid);
2504 if (rsr0 & RSR0_OPEN_CONN) {
2505 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2506
2507 hprintk("cid 0x%x not idle (rsr0 = 0x%x)\n", cid, rsr0);
2508 err = -EBUSY;
2509 goto open_failed;
2510 }
2511
2512 #ifdef USE_RBPS
2513 rsr1 = RSR1_GROUP(0);
2514 rsr4 = RSR4_GROUP(0);
2515 #else /* !USE_RBPS */
2516 rsr1 = RSR1_GROUP(0)|RSR1_RBPL_ONLY;
2517 rsr4 = RSR4_GROUP(0)|RSR4_RBPL_ONLY;
2518 #endif /* USE_RBPS */
2519 rsr0 = vcc->qos.rxtp.traffic_class == ATM_UBR ?
2520 (RSR0_EPD_ENABLE|RSR0_PPD_ENABLE) : 0;
2521
2522 #ifdef USE_CHECKSUM_HW
2523 if (vpi == 0 && vci >= ATM_NOT_RSV_VCI)
2524 rsr0 |= RSR0_TCP_CKSUM;
2525 #endif
2526
2527 he_writel_rsr4(he_dev, rsr4, cid);
2528 he_writel_rsr1(he_dev, rsr1, cid);
2529 /* 5.1.11 last parameter initialized should be
2530 the open/closed indication in rsr0 */
2531 he_writel_rsr0(he_dev,
2532 rsr0 | RSR0_START_PDU | RSR0_OPEN_CONN | aal, cid);
2533 (void) he_readl_rsr0(he_dev, cid); /* flush posted writes */
2534
2535 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2536 }
2537
2538 open_failed:
2539
2540 if (err) {
2541 kfree(he_vcc);
2542 clear_bit(ATM_VF_ADDR, &vcc->flags);
2543 }
2544 else
2545 set_bit(ATM_VF_READY, &vcc->flags);
2546
2547 return err;
2548 }
2549
2550 static void
2551 he_close(struct atm_vcc *vcc)
2552 {
2553 unsigned long flags;
2554 DECLARE_WAITQUEUE(wait, current);
2555 struct he_dev *he_dev = HE_DEV(vcc->dev);
2556 struct he_tpd *tpd;
2557 unsigned cid;
2558 struct he_vcc *he_vcc = HE_VCC(vcc);
2559 #define MAX_RETRY 30
2560 int retry = 0, sleep = 1, tx_inuse;
2561
2562 HPRINTK("close vcc %p %d.%d\n", vcc, vcc->vpi, vcc->vci);
2563
2564 clear_bit(ATM_VF_READY, &vcc->flags);
2565 cid = he_mkcid(he_dev, vcc->vpi, vcc->vci);
2566
2567 if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
2568 int timeout;
2569
2570 HPRINTK("close rx cid 0x%x\n", cid);
2571
2572 /* 2.7.2.2 close receive operation */
2573
2574 /* wait for previous close (if any) to finish */
2575
2576 spin_lock_irqsave(&he_dev->global_lock, flags);
2577 while (he_readl(he_dev, RCC_STAT) & RCC_BUSY) {
2578 HPRINTK("close cid 0x%x RCC_BUSY\n", cid);
2579 udelay(250);
2580 }
2581
2582 set_current_state(TASK_UNINTERRUPTIBLE);
2583 add_wait_queue(&he_vcc->rx_waitq, &wait);
2584
2585 he_writel_rsr0(he_dev, RSR0_CLOSE_CONN, cid);
2586 (void) he_readl_rsr0(he_dev, cid); /* flush posted writes */
2587 he_writel_mbox(he_dev, cid, RXCON_CLOSE);
2588 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2589
2590 timeout = schedule_timeout(30*HZ);
2591
2592 remove_wait_queue(&he_vcc->rx_waitq, &wait);
2593 set_current_state(TASK_RUNNING);
2594
2595 if (timeout == 0)
2596 hprintk("close rx timeout cid 0x%x\n", cid);
2597
2598 HPRINTK("close rx cid 0x%x complete\n", cid);
2599
2600 }
2601
2602 if (vcc->qos.txtp.traffic_class != ATM_NONE) {
2603 volatile unsigned tsr4, tsr0;
2604 int timeout;
2605
2606 HPRINTK("close tx cid 0x%x\n", cid);
2607
2608 /* 2.1.2
2609 *
2610 * ... the host must first stop queueing packets to the TPDRQ
2611 * on the connection to be closed, then wait for all outstanding
2612 * packets to be transmitted and their buffers returned to the
2613 * TBRQ. When the last packet on the connection arrives in the
2614 * TBRQ, the host issues the close command to the adapter.
2615 */
2616
2617 while (((tx_inuse = atomic_read(&sk_atm(vcc)->sk_wmem_alloc)) > 0) &&
2618 (retry < MAX_RETRY)) {
2619 msleep(sleep);
2620 if (sleep < 250)
2621 sleep = sleep * 2;
2622
2623 ++retry;
2624 }
2625
2626 if (tx_inuse)
2627 hprintk("close tx cid 0x%x tx_inuse = %d\n", cid, tx_inuse);
2628
2629 /* 2.3.1.1 generic close operations with flush */
2630
2631 spin_lock_irqsave(&he_dev->global_lock, flags);
2632 he_writel_tsr4_upper(he_dev, TSR4_FLUSH_CONN, cid);
2633 /* also clears TSR4_SESSION_ENDED */
2634
2635 switch (vcc->qos.txtp.traffic_class) {
2636 case ATM_UBR:
2637 he_writel_tsr1(he_dev,
2638 TSR1_MCR(rate_to_atmf(200000))
2639 | TSR1_PCR(0), cid);
2640 break;
2641 case ATM_CBR:
2642 he_writel_tsr14_upper(he_dev, TSR14_DELETE, cid);
2643 break;
2644 }
2645 (void) he_readl_tsr4(he_dev, cid); /* flush posted writes */
2646
2647 tpd = __alloc_tpd(he_dev);
2648 if (tpd == NULL) {
2649 hprintk("close tx he_alloc_tpd failed cid 0x%x\n", cid);
2650 goto close_tx_incomplete;
2651 }
2652 tpd->status |= TPD_EOS | TPD_INT;
2653 tpd->skb = NULL;
2654 tpd->vcc = vcc;
2655 wmb();
2656
2657 set_current_state(TASK_UNINTERRUPTIBLE);
2658 add_wait_queue(&he_vcc->tx_waitq, &wait);
2659 __enqueue_tpd(he_dev, tpd, cid);
2660 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2661
2662 timeout = schedule_timeout(30*HZ);
2663
2664 remove_wait_queue(&he_vcc->tx_waitq, &wait);
2665 set_current_state(TASK_RUNNING);
2666
2667 spin_lock_irqsave(&he_dev->global_lock, flags);
2668
2669 if (timeout == 0) {
2670 hprintk("close tx timeout cid 0x%x\n", cid);
2671 goto close_tx_incomplete;
2672 }
2673
2674 while (!((tsr4 = he_readl_tsr4(he_dev, cid)) & TSR4_SESSION_ENDED)) {
2675 HPRINTK("close tx cid 0x%x !TSR4_SESSION_ENDED (tsr4 = 0x%x)\n", cid, tsr4);
2676 udelay(250);
2677 }
2678
2679 while (TSR0_CONN_STATE(tsr0 = he_readl_tsr0(he_dev, cid)) != 0) {
2680 HPRINTK("close tx cid 0x%x TSR0_CONN_STATE != 0 (tsr0 = 0x%x)\n", cid, tsr0);
2681 udelay(250);
2682 }
2683
2684 close_tx_incomplete:
2685
2686 if (vcc->qos.txtp.traffic_class == ATM_CBR) {
2687 int reg = he_vcc->rc_index;
2688
2689 HPRINTK("cs_stper reg = %d\n", reg);
2690
2691 if (he_dev->cs_stper[reg].inuse == 0)
2692 hprintk("cs_stper[%d].inuse = 0!\n", reg);
2693 else
2694 --he_dev->cs_stper[reg].inuse;
2695
2696 he_dev->total_bw -= he_dev->cs_stper[reg].pcr;
2697 }
2698 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2699
2700 HPRINTK("close tx cid 0x%x complete\n", cid);
2701 }
2702
2703 kfree(he_vcc);
2704
2705 clear_bit(ATM_VF_ADDR, &vcc->flags);
2706 }
2707
2708 static int
2709 he_send(struct atm_vcc *vcc, struct sk_buff *skb)
2710 {
2711 unsigned long flags;
2712 struct he_dev *he_dev = HE_DEV(vcc->dev);
2713 unsigned cid = he_mkcid(he_dev, vcc->vpi, vcc->vci);
2714 struct he_tpd *tpd;
2715 #ifdef USE_SCATTERGATHER
2716 int i, slot = 0;
2717 #endif
2718
2719 #define HE_TPD_BUFSIZE 0xffff
2720
2721 HPRINTK("send %d.%d\n", vcc->vpi, vcc->vci);
2722
2723 if ((skb->len > HE_TPD_BUFSIZE) ||
2724 ((vcc->qos.aal == ATM_AAL0) && (skb->len != ATM_AAL0_SDU))) {
2725 hprintk("buffer too large (or small) -- %d bytes\n", skb->len );
2726 if (vcc->pop)
2727 vcc->pop(vcc, skb);
2728 else
2729 dev_kfree_skb_any(skb);
2730 atomic_inc(&vcc->stats->tx_err);
2731 return -EINVAL;
2732 }
2733
2734 #ifndef USE_SCATTERGATHER
2735 if (skb_shinfo(skb)->nr_frags) {
2736 hprintk("no scatter/gather support\n");
2737 if (vcc->pop)
2738 vcc->pop(vcc, skb);
2739 else
2740 dev_kfree_skb_any(skb);
2741 atomic_inc(&vcc->stats->tx_err);
2742 return -EINVAL;
2743 }
2744 #endif
2745 spin_lock_irqsave(&he_dev->global_lock, flags);
2746
2747 tpd = __alloc_tpd(he_dev);
2748 if (tpd == NULL) {
2749 if (vcc->pop)
2750 vcc->pop(vcc, skb);
2751 else
2752 dev_kfree_skb_any(skb);
2753 atomic_inc(&vcc->stats->tx_err);
2754 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2755 return -ENOMEM;
2756 }
2757
2758 if (vcc->qos.aal == ATM_AAL5)
2759 tpd->status |= TPD_CELLTYPE(TPD_USERCELL);
2760 else {
2761 char *pti_clp = (void *) (skb->data + 3);
2762 int clp, pti;
2763
2764 pti = (*pti_clp & ATM_HDR_PTI_MASK) >> ATM_HDR_PTI_SHIFT;
2765 clp = (*pti_clp & ATM_HDR_CLP);
2766 tpd->status |= TPD_CELLTYPE(pti);
2767 if (clp)
2768 tpd->status |= TPD_CLP;
2769
2770 skb_pull(skb, ATM_AAL0_SDU - ATM_CELL_PAYLOAD);
2771 }
2772
2773 #ifdef USE_SCATTERGATHER
2774 tpd->iovec[slot].addr = pci_map_single(he_dev->pci_dev, skb->data,
2775 skb->len - skb->data_len, PCI_DMA_TODEVICE);
2776 tpd->iovec[slot].len = skb->len - skb->data_len;
2777 ++slot;
2778
2779 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2780 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2781
2782 if (slot == TPD_MAXIOV) { /* queue tpd; start new tpd */
2783 tpd->vcc = vcc;
2784 tpd->skb = NULL; /* not the last fragment
2785 so dont ->push() yet */
2786 wmb();
2787
2788 __enqueue_tpd(he_dev, tpd, cid);
2789 tpd = __alloc_tpd(he_dev);
2790 if (tpd == NULL) {
2791 if (vcc->pop)
2792 vcc->pop(vcc, skb);
2793 else
2794 dev_kfree_skb_any(skb);
2795 atomic_inc(&vcc->stats->tx_err);
2796 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2797 return -ENOMEM;
2798 }
2799 tpd->status |= TPD_USERCELL;
2800 slot = 0;
2801 }
2802
2803 tpd->iovec[slot].addr = pci_map_single(he_dev->pci_dev,
2804 (void *) page_address(frag->page) + frag->page_offset,
2805 frag->size, PCI_DMA_TODEVICE);
2806 tpd->iovec[slot].len = frag->size;
2807 ++slot;
2808
2809 }
2810
2811 tpd->iovec[slot - 1].len |= TPD_LST;
2812 #else
2813 tpd->address0 = pci_map_single(he_dev->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE);
2814 tpd->length0 = skb->len | TPD_LST;
2815 #endif
2816 tpd->status |= TPD_INT;
2817
2818 tpd->vcc = vcc;
2819 tpd->skb = skb;
2820 wmb();
2821 ATM_SKB(skb)->vcc = vcc;
2822
2823 __enqueue_tpd(he_dev, tpd, cid);
2824 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2825
2826 atomic_inc(&vcc->stats->tx);
2827
2828 return 0;
2829 }
2830
2831 static int
2832 he_ioctl(struct atm_dev *atm_dev, unsigned int cmd, void __user *arg)
2833 {
2834 unsigned long flags;
2835 struct he_dev *he_dev = HE_DEV(atm_dev);
2836 struct he_ioctl_reg reg;
2837 int err = 0;
2838
2839 switch (cmd) {
2840 case HE_GET_REG:
2841 if (!capable(CAP_NET_ADMIN))
2842 return -EPERM;
2843
2844 if (copy_from_user(&reg, arg,
2845 sizeof(struct he_ioctl_reg)))
2846 return -EFAULT;
2847
2848 spin_lock_irqsave(&he_dev->global_lock, flags);
2849 switch (reg.type) {
2850 case HE_REGTYPE_PCI:
2851 reg.val = he_readl(he_dev, reg.addr);
2852 break;
2853 case HE_REGTYPE_RCM:
2854 reg.val =
2855 he_readl_rcm(he_dev, reg.addr);
2856 break;
2857 case HE_REGTYPE_TCM:
2858 reg.val =
2859 he_readl_tcm(he_dev, reg.addr);
2860 break;
2861 case HE_REGTYPE_MBOX:
2862 reg.val =
2863 he_readl_mbox(he_dev, reg.addr);
2864 break;
2865 default:
2866 err = -EINVAL;
2867 break;
2868 }
2869 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2870 if (err == 0)
2871 if (copy_to_user(arg, &reg,
2872 sizeof(struct he_ioctl_reg)))
2873 return -EFAULT;
2874 break;
2875 default:
2876 #ifdef CONFIG_ATM_HE_USE_SUNI
2877 if (atm_dev->phy && atm_dev->phy->ioctl)
2878 err = atm_dev->phy->ioctl(atm_dev, cmd, arg);
2879 #else /* CONFIG_ATM_HE_USE_SUNI */
2880 err = -EINVAL;
2881 #endif /* CONFIG_ATM_HE_USE_SUNI */
2882 break;
2883 }
2884
2885 return err;
2886 }
2887
2888 static void
2889 he_phy_put(struct atm_dev *atm_dev, unsigned char val, unsigned long addr)
2890 {
2891 unsigned long flags;
2892 struct he_dev *he_dev = HE_DEV(atm_dev);
2893
2894 HPRINTK("phy_put(val 0x%x, addr 0x%lx)\n", val, addr);
2895
2896 spin_lock_irqsave(&he_dev->global_lock, flags);
2897 he_writel(he_dev, val, FRAMER + (addr*4));
2898 (void) he_readl(he_dev, FRAMER + (addr*4)); /* flush posted writes */
2899 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2900 }
2901
2902
2903 static unsigned char
2904 he_phy_get(struct atm_dev *atm_dev, unsigned long addr)
2905 {
2906 unsigned long flags;
2907 struct he_dev *he_dev = HE_DEV(atm_dev);
2908 unsigned reg;
2909
2910 spin_lock_irqsave(&he_dev->global_lock, flags);
2911 reg = he_readl(he_dev, FRAMER + (addr*4));
2912 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2913
2914 HPRINTK("phy_get(addr 0x%lx) =0x%x\n", addr, reg);
2915 return reg;
2916 }
2917
2918 static int
2919 he_proc_read(struct atm_dev *dev, loff_t *pos, char *page)
2920 {
2921 unsigned long flags;
2922 struct he_dev *he_dev = HE_DEV(dev);
2923 int left, i;
2924 #ifdef notdef
2925 struct he_rbrq *rbrq_tail;
2926 struct he_tpdrq *tpdrq_head;
2927 int rbpl_head, rbpl_tail;
2928 #endif
2929 static long mcc = 0, oec = 0, dcc = 0, cec = 0;
2930
2931
2932 left = *pos;
2933 if (!left--)
2934 return sprintf(page, "ATM he driver\n");
2935
2936 if (!left--)
2937 return sprintf(page, "%s%s\n\n",
2938 he_dev->prod_id, he_dev->media & 0x40 ? "SM" : "MM");
2939
2940 if (!left--)
2941 return sprintf(page, "Mismatched Cells VPI/VCI Not Open Dropped Cells RCM Dropped Cells\n");
2942
2943 spin_lock_irqsave(&he_dev->global_lock, flags);
2944 mcc += he_readl(he_dev, MCC);
2945 oec += he_readl(he_dev, OEC);
2946 dcc += he_readl(he_dev, DCC);
2947 cec += he_readl(he_dev, CEC);
2948 spin_unlock_irqrestore(&he_dev->global_lock, flags);
2949
2950 if (!left--)
2951 return sprintf(page, "%16ld %16ld %13ld %17ld\n\n",
2952 mcc, oec, dcc, cec);
2953
2954 if (!left--)
2955 return sprintf(page, "irq_size = %d inuse = ? peak = %d\n",
2956 CONFIG_IRQ_SIZE, he_dev->irq_peak);
2957
2958 if (!left--)
2959 return sprintf(page, "tpdrq_size = %d inuse = ?\n",
2960 CONFIG_TPDRQ_SIZE);
2961
2962 if (!left--)
2963 return sprintf(page, "rbrq_size = %d inuse = ? peak = %d\n",
2964 CONFIG_RBRQ_SIZE, he_dev->rbrq_peak);
2965
2966 if (!left--)
2967 return sprintf(page, "tbrq_size = %d peak = %d\n",
2968 CONFIG_TBRQ_SIZE, he_dev->tbrq_peak);
2969
2970
2971 #ifdef notdef
2972 rbpl_head = RBPL_MASK(he_readl(he_dev, G0_RBPL_S));
2973 rbpl_tail = RBPL_MASK(he_readl(he_dev, G0_RBPL_T));
2974
2975 inuse = rbpl_head - rbpl_tail;
2976 if (inuse < 0)
2977 inuse += CONFIG_RBPL_SIZE * sizeof(struct he_rbp);
2978 inuse /= sizeof(struct he_rbp);
2979
2980 if (!left--)
2981 return sprintf(page, "rbpl_size = %d inuse = %d\n\n",
2982 CONFIG_RBPL_SIZE, inuse);
2983 #endif
2984
2985 if (!left--)
2986 return sprintf(page, "rate controller periods (cbr)\n pcr #vc\n");
2987
2988 for (i = 0; i < HE_NUM_CS_STPER; ++i)
2989 if (!left--)
2990 return sprintf(page, "cs_stper%-2d %8ld %3d\n", i,
2991 he_dev->cs_stper[i].pcr,
2992 he_dev->cs_stper[i].inuse);
2993
2994 if (!left--)
2995 return sprintf(page, "total bw (cbr): %d (limit %d)\n",
2996 he_dev->total_bw, he_dev->atm_dev->link_rate * 10 / 9);
2997
2998 return 0;
2999 }
3000
3001 /* eeprom routines -- see 4.7 */
3002
3003 static u8 read_prom_byte(struct he_dev *he_dev, int addr)
3004 {
3005 u32 val = 0, tmp_read = 0;
3006 int i, j = 0;
3007 u8 byte_read = 0;
3008
3009 val = readl(he_dev->membase + HOST_CNTL);
3010 val &= 0xFFFFE0FF;
3011
3012 /* Turn on write enable */
3013 val |= 0x800;
3014 he_writel(he_dev, val, HOST_CNTL);
3015
3016 /* Send READ instruction */
3017 for (i = 0; i < ARRAY_SIZE(readtab); i++) {
3018 he_writel(he_dev, val | readtab[i], HOST_CNTL);
3019 udelay(EEPROM_DELAY);
3020 }
3021
3022 /* Next, we need to send the byte address to read from */
3023 for (i = 7; i >= 0; i--) {
3024 he_writel(he_dev, val | clocktab[j++] | (((addr >> i) & 1) << 9), HOST_CNTL);
3025 udelay(EEPROM_DELAY);
3026 he_writel(he_dev, val | clocktab[j++] | (((addr >> i) & 1) << 9), HOST_CNTL);
3027 udelay(EEPROM_DELAY);
3028 }
3029
3030 j = 0;
3031
3032 val &= 0xFFFFF7FF; /* Turn off write enable */
3033 he_writel(he_dev, val, HOST_CNTL);
3034
3035 /* Now, we can read data from the EEPROM by clocking it in */
3036 for (i = 7; i >= 0; i--) {
3037 he_writel(he_dev, val | clocktab[j++], HOST_CNTL);
3038 udelay(EEPROM_DELAY);
3039 tmp_read = he_readl(he_dev, HOST_CNTL);
3040 byte_read |= (unsigned char)
3041 ((tmp_read & ID_DOUT) >> ID_DOFFSET << i);
3042 he_writel(he_dev, val | clocktab[j++], HOST_CNTL);
3043 udelay(EEPROM_DELAY);
3044 }
3045
3046 he_writel(he_dev, val | ID_CS, HOST_CNTL);
3047 udelay(EEPROM_DELAY);
3048
3049 return byte_read;
3050 }
3051
3052 MODULE_LICENSE("GPL");
3053 MODULE_AUTHOR("chas williams <chas@cmf.nrl.navy.mil>");
3054 MODULE_DESCRIPTION("ForeRunnerHE ATM Adapter driver");
3055 module_param(disable64, bool, 0);
3056 MODULE_PARM_DESC(disable64, "disable 64-bit pci bus transfers");
3057 module_param(nvpibits, short, 0);
3058 MODULE_PARM_DESC(nvpibits, "numbers of bits for vpi (default 0)");
3059 module_param(nvcibits, short, 0);
3060 MODULE_PARM_DESC(nvcibits, "numbers of bits for vci (default 12)");
3061 module_param(rx_skb_reserve, short, 0);
3062 MODULE_PARM_DESC(rx_skb_reserve, "padding for receive skb (default 16)");
3063 module_param(irq_coalesce, bool, 0);
3064 MODULE_PARM_DESC(irq_coalesce, "use interrupt coalescing (default 1)");
3065 module_param(sdh, bool, 0);
3066 MODULE_PARM_DESC(sdh, "use SDH framing (default 0)");
3067
3068 static struct pci_device_id he_pci_tbl[] = {
3069 { PCI_VENDOR_ID_FORE, PCI_DEVICE_ID_FORE_HE, PCI_ANY_ID, PCI_ANY_ID,
3070 0, 0, 0 },
3071 { 0, }
3072 };
3073
3074 MODULE_DEVICE_TABLE(pci, he_pci_tbl);
3075
3076 static struct pci_driver he_driver = {
3077 .name = "he",
3078 .probe = he_init_one,
3079 .remove = __devexit_p(he_remove_one),
3080 .id_table = he_pci_tbl,
3081 };
3082
3083 static int __init he_init(void)
3084 {
3085 return pci_register_driver(&he_driver);
3086 }
3087
3088 static void __exit he_cleanup(void)
3089 {
3090 pci_unregister_driver(&he_driver);
3091 }
3092
3093 module_init(he_init);
3094 module_exit(he_cleanup);
Support for the Chinese Samsung S3C2440 based development boards