1 |
62 |
marcus.erl |
/* drivers/atm/eni.c - Efficient Networks ENI155P device driver */
|
2 |
|
|
|
3 |
|
|
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
|
4 |
|
|
|
5 |
|
|
|
6 |
|
|
#include <linux/module.h>
|
7 |
|
|
#include <linux/kernel.h>
|
8 |
|
|
#include <linux/mm.h>
|
9 |
|
|
#include <linux/pci.h>
|
10 |
|
|
#include <linux/errno.h>
|
11 |
|
|
#include <linux/atm.h>
|
12 |
|
|
#include <linux/atmdev.h>
|
13 |
|
|
#include <linux/sonet.h>
|
14 |
|
|
#include <linux/skbuff.h>
|
15 |
|
|
#include <linux/time.h>
|
16 |
|
|
#include <linux/delay.h>
|
17 |
|
|
#include <linux/uio.h>
|
18 |
|
|
#include <linux/init.h>
|
19 |
|
|
#include <linux/atm_eni.h>
|
20 |
|
|
#include <linux/bitops.h>
|
21 |
|
|
#include <asm/system.h>
|
22 |
|
|
#include <asm/io.h>
|
23 |
|
|
#include <asm/atomic.h>
|
24 |
|
|
#include <asm/uaccess.h>
|
25 |
|
|
#include <asm/string.h>
|
26 |
|
|
#include <asm/byteorder.h>
|
27 |
|
|
|
28 |
|
|
#include "tonga.h"
|
29 |
|
|
#include "midway.h"
|
30 |
|
|
#include "suni.h"
|
31 |
|
|
#include "eni.h"
|
32 |
|
|
|
33 |
|
|
#if !defined(__i386__) && !defined(__x86_64__)
|
34 |
|
|
#ifndef ioremap_nocache
|
35 |
|
|
#define ioremap_nocache(X,Y) ioremap(X,Y)
|
36 |
|
|
#endif
|
37 |
|
|
#endif
|
38 |
|
|
|
39 |
|
|
/*
|
40 |
|
|
* TODO:
|
41 |
|
|
*
|
42 |
|
|
* Show stoppers
|
43 |
|
|
* none
|
44 |
|
|
*
|
45 |
|
|
* Minor
|
46 |
|
|
* - OAM support
|
47 |
|
|
* - fix bugs listed below
|
48 |
|
|
*/
|
49 |
|
|
|
50 |
|
|
/*
|
51 |
|
|
* KNOWN BUGS:
|
52 |
|
|
*
|
53 |
|
|
* - may run into JK-JK bug and deadlock
|
54 |
|
|
* - should allocate UBR channel first
|
55 |
|
|
* - buffer space allocation algorithm is stupid
|
56 |
|
|
* (RX: should be maxSDU+maxdelay*rate
|
57 |
|
|
* TX: should be maxSDU+min(maxSDU,maxdelay*rate) )
|
58 |
|
|
* - doesn't support OAM cells
|
59 |
|
|
* - eni_put_free may hang if not putting memory fragments that _complete_
|
60 |
|
|
* 2^n block (never happens in real life, though)
|
61 |
|
|
*/
|
62 |
|
|
|
63 |
|
|
|
64 |
|
|
#if 0
|
65 |
|
|
#define DPRINTK(format,args...) printk(KERN_DEBUG format,##args)
|
66 |
|
|
#else
|
67 |
|
|
#define DPRINTK(format,args...)
|
68 |
|
|
#endif
|
69 |
|
|
|
70 |
|
|
|
71 |
|
|
#ifndef CONFIG_ATM_ENI_TUNE_BURST
|
72 |
|
|
#define CONFIG_ATM_ENI_BURST_TX_8W
|
73 |
|
|
#define CONFIG_ATM_ENI_BURST_RX_4W
|
74 |
|
|
#endif
|
75 |
|
|
|
76 |
|
|
|
77 |
|
|
#ifndef CONFIG_ATM_ENI_DEBUG
|
78 |
|
|
|
79 |
|
|
|
80 |
|
|
#define NULLCHECK(x)
|
81 |
|
|
|
82 |
|
|
#define EVENT(s,a,b)
|
83 |
|
|
|
84 |
|
|
|
85 |
|
|
static void event_dump(void)
|
86 |
|
|
{
|
87 |
|
|
}
|
88 |
|
|
|
89 |
|
|
|
90 |
|
|
#else
|
91 |
|
|
|
92 |
|
|
|
93 |
|
|
/*
|
94 |
|
|
* NULL pointer checking
|
95 |
|
|
*/
|
96 |
|
|
|
97 |
|
|
#define NULLCHECK(x) \
|
98 |
|
|
if ((unsigned long) (x) < 0x30) \
|
99 |
|
|
printk(KERN_CRIT #x "==0x%lx\n",(unsigned long) (x))
|
100 |
|
|
|
101 |
|
|
/*
|
102 |
|
|
* Very extensive activity logging. Greatly improves bug detection speed but
|
103 |
|
|
* costs a few Mbps if enabled.
|
104 |
|
|
*/
|
105 |
|
|
|
106 |
|
|
#define EV 64
|
107 |
|
|
|
108 |
|
|
static const char *ev[EV];
|
109 |
|
|
static unsigned long ev_a[EV],ev_b[EV];
|
110 |
|
|
static int ec = 0;
|
111 |
|
|
|
112 |
|
|
|
113 |
|
|
static void EVENT(const char *s,unsigned long a,unsigned long b)
|
114 |
|
|
{
|
115 |
|
|
ev[ec] = s;
|
116 |
|
|
ev_a[ec] = a;
|
117 |
|
|
ev_b[ec] = b;
|
118 |
|
|
ec = (ec+1) % EV;
|
119 |
|
|
}
|
120 |
|
|
|
121 |
|
|
|
122 |
|
|
static void event_dump(void)
|
123 |
|
|
{
|
124 |
|
|
int n,i;
|
125 |
|
|
|
126 |
|
|
for (n = 0; n < EV; n++) {
|
127 |
|
|
i = (ec+n) % EV;
|
128 |
|
|
printk(KERN_NOTICE);
|
129 |
|
|
printk(ev[i] ? ev[i] : "(null)",ev_a[i],ev_b[i]);
|
130 |
|
|
}
|
131 |
|
|
}
|
132 |
|
|
|
133 |
|
|
|
134 |
|
|
#endif /* CONFIG_ATM_ENI_DEBUG */
|
135 |
|
|
|
136 |
|
|
|
137 |
|
|
/*
|
138 |
|
|
* NExx must not be equal at end
|
139 |
|
|
* EExx may be equal at end
|
140 |
|
|
* xxPJOK verify validity of pointer jumps
|
141 |
|
|
* xxPMOK operating on a circular buffer of "c" words
|
142 |
|
|
*/
|
143 |
|
|
|
144 |
|
|
#define NEPJOK(a0,a1,b) \
|
145 |
|
|
((a0) < (a1) ? (b) <= (a0) || (b) > (a1) : (b) <= (a0) && (b) > (a1))
|
146 |
|
|
#define EEPJOK(a0,a1,b) \
|
147 |
|
|
((a0) < (a1) ? (b) < (a0) || (b) >= (a1) : (b) < (a0) && (b) >= (a1))
|
148 |
|
|
#define NEPMOK(a0,d,b,c) NEPJOK(a0,(a0+d) & (c-1),b)
|
149 |
|
|
#define EEPMOK(a0,d,b,c) EEPJOK(a0,(a0+d) & (c-1),b)
|
150 |
|
|
|
151 |
|
|
|
152 |
|
|
static int tx_complete = 0,dma_complete = 0,queued = 0,requeued = 0,
|
153 |
|
|
backlogged = 0,rx_enqueued = 0,rx_dequeued = 0,pushed = 0,submitted = 0,
|
154 |
|
|
putting = 0;
|
155 |
|
|
|
156 |
|
|
static struct atm_dev *eni_boards = NULL;
|
157 |
|
|
|
158 |
|
|
static u32 *cpu_zeroes = NULL; /* aligned "magic" zeroes */
|
159 |
|
|
static dma_addr_t zeroes;
|
160 |
|
|
|
161 |
|
|
/* Read/write registers on card */
|
162 |
|
|
#define eni_in(r) readl(eni_dev->reg+(r)*4)
|
163 |
|
|
#define eni_out(v,r) writel((v),eni_dev->reg+(r)*4)
|
164 |
|
|
|
165 |
|
|
|
166 |
|
|
/*-------------------------------- utilities --------------------------------*/
|
167 |
|
|
|
168 |
|
|
|
169 |
|
|
static void dump_mem(struct eni_dev *eni_dev)
|
170 |
|
|
{
|
171 |
|
|
int i;
|
172 |
|
|
|
173 |
|
|
for (i = 0; i < eni_dev->free_len; i++)
|
174 |
|
|
printk(KERN_DEBUG " %d: %p %d\n",i,
|
175 |
|
|
eni_dev->free_list[i].start,
|
176 |
|
|
1 << eni_dev->free_list[i].order);
|
177 |
|
|
}
|
178 |
|
|
|
179 |
|
|
|
180 |
|
|
static void dump(struct atm_dev *dev)
|
181 |
|
|
{
|
182 |
|
|
struct eni_dev *eni_dev;
|
183 |
|
|
|
184 |
|
|
int i;
|
185 |
|
|
|
186 |
|
|
eni_dev = ENI_DEV(dev);
|
187 |
|
|
printk(KERN_NOTICE "Free memory\n");
|
188 |
|
|
dump_mem(eni_dev);
|
189 |
|
|
printk(KERN_NOTICE "TX buffers\n");
|
190 |
|
|
for (i = 0; i < NR_CHAN; i++)
|
191 |
|
|
if (eni_dev->tx[i].send)
|
192 |
|
|
printk(KERN_NOTICE " TX %d @ %p: %ld\n",i,
|
193 |
|
|
eni_dev->tx[i].send,eni_dev->tx[i].words*4);
|
194 |
|
|
printk(KERN_NOTICE "RX buffers\n");
|
195 |
|
|
for (i = 0; i < 1024; i++)
|
196 |
|
|
if (eni_dev->rx_map[i] && ENI_VCC(eni_dev->rx_map[i])->rx)
|
197 |
|
|
printk(KERN_NOTICE " RX %d @ %p: %ld\n",i,
|
198 |
|
|
ENI_VCC(eni_dev->rx_map[i])->recv,
|
199 |
|
|
ENI_VCC(eni_dev->rx_map[i])->words*4);
|
200 |
|
|
printk(KERN_NOTICE "----\n");
|
201 |
|
|
}
|
202 |
|
|
|
203 |
|
|
|
204 |
|
|
static void eni_put_free(struct eni_dev *eni_dev, void __iomem *start,
|
205 |
|
|
unsigned long size)
|
206 |
|
|
{
|
207 |
|
|
struct eni_free *list;
|
208 |
|
|
int len,order;
|
209 |
|
|
|
210 |
|
|
DPRINTK("init 0x%lx+%ld(0x%lx)\n",start,size,size);
|
211 |
|
|
start += eni_dev->base_diff;
|
212 |
|
|
list = eni_dev->free_list;
|
213 |
|
|
len = eni_dev->free_len;
|
214 |
|
|
while (size) {
|
215 |
|
|
if (len >= eni_dev->free_list_size) {
|
216 |
|
|
printk(KERN_CRIT "eni_put_free overflow (%p,%ld)\n",
|
217 |
|
|
start,size);
|
218 |
|
|
break;
|
219 |
|
|
}
|
220 |
|
|
for (order = 0; !(((unsigned long)start | size) & (1 << order)); order++);
|
221 |
|
|
if (MID_MIN_BUF_SIZE > (1 << order)) {
|
222 |
|
|
printk(KERN_CRIT "eni_put_free: order %d too small\n",
|
223 |
|
|
order);
|
224 |
|
|
break;
|
225 |
|
|
}
|
226 |
|
|
list[len].start = (void __iomem *) start;
|
227 |
|
|
list[len].order = order;
|
228 |
|
|
len++;
|
229 |
|
|
start += 1 << order;
|
230 |
|
|
size -= 1 << order;
|
231 |
|
|
}
|
232 |
|
|
eni_dev->free_len = len;
|
233 |
|
|
/*dump_mem(eni_dev);*/
|
234 |
|
|
}
|
235 |
|
|
|
236 |
|
|
|
237 |
|
|
static void __iomem *eni_alloc_mem(struct eni_dev *eni_dev, unsigned long *size)
|
238 |
|
|
{
|
239 |
|
|
struct eni_free *list;
|
240 |
|
|
void __iomem *start;
|
241 |
|
|
int len,i,order,best_order,index;
|
242 |
|
|
|
243 |
|
|
list = eni_dev->free_list;
|
244 |
|
|
len = eni_dev->free_len;
|
245 |
|
|
if (*size < MID_MIN_BUF_SIZE) *size = MID_MIN_BUF_SIZE;
|
246 |
|
|
if (*size > MID_MAX_BUF_SIZE) return NULL;
|
247 |
|
|
for (order = 0; (1 << order) < *size; order++);
|
248 |
|
|
DPRINTK("trying: %ld->%d\n",*size,order);
|
249 |
|
|
best_order = 65; /* we don't have more than 2^64 of anything ... */
|
250 |
|
|
index = 0; /* silence GCC */
|
251 |
|
|
for (i = 0; i < len; i++)
|
252 |
|
|
if (list[i].order == order) {
|
253 |
|
|
best_order = order;
|
254 |
|
|
index = i;
|
255 |
|
|
break;
|
256 |
|
|
}
|
257 |
|
|
else if (best_order > list[i].order && list[i].order > order) {
|
258 |
|
|
best_order = list[i].order;
|
259 |
|
|
index = i;
|
260 |
|
|
}
|
261 |
|
|
if (best_order == 65) return NULL;
|
262 |
|
|
start = list[index].start-eni_dev->base_diff;
|
263 |
|
|
list[index] = list[--len];
|
264 |
|
|
eni_dev->free_len = len;
|
265 |
|
|
*size = 1 << order;
|
266 |
|
|
eni_put_free(eni_dev,start+*size,(1 << best_order)-*size);
|
267 |
|
|
DPRINTK("%ld bytes (order %d) at 0x%lx\n",*size,order,start);
|
268 |
|
|
memset_io(start,0,*size); /* never leak data */
|
269 |
|
|
/*dump_mem(eni_dev);*/
|
270 |
|
|
return start;
|
271 |
|
|
}
|
272 |
|
|
|
273 |
|
|
|
274 |
|
|
static void eni_free_mem(struct eni_dev *eni_dev, void __iomem *start,
|
275 |
|
|
unsigned long size)
|
276 |
|
|
{
|
277 |
|
|
struct eni_free *list;
|
278 |
|
|
int len,i,order;
|
279 |
|
|
|
280 |
|
|
start += eni_dev->base_diff;
|
281 |
|
|
list = eni_dev->free_list;
|
282 |
|
|
len = eni_dev->free_len;
|
283 |
|
|
for (order = -1; size; order++) size >>= 1;
|
284 |
|
|
DPRINTK("eni_free_mem: %p+0x%lx (order %d)\n",start,size,order);
|
285 |
|
|
for (i = 0; i < len; i++)
|
286 |
|
|
if (((unsigned long) list[i].start) == ((unsigned long)start^(1 << order)) &&
|
287 |
|
|
list[i].order == order) {
|
288 |
|
|
DPRINTK("match[%d]: 0x%lx/0x%lx(0x%x), %d/%d\n",i,
|
289 |
|
|
list[i].start,start,1 << order,list[i].order,order);
|
290 |
|
|
list[i] = list[--len];
|
291 |
|
|
start = (void __iomem *) ((unsigned long) start & ~(unsigned long) (1 << order));
|
292 |
|
|
order++;
|
293 |
|
|
i = -1;
|
294 |
|
|
continue;
|
295 |
|
|
}
|
296 |
|
|
if (len >= eni_dev->free_list_size) {
|
297 |
|
|
printk(KERN_ALERT "eni_free_mem overflow (%p,%d)\n",start,
|
298 |
|
|
order);
|
299 |
|
|
return;
|
300 |
|
|
}
|
301 |
|
|
list[len].start = start;
|
302 |
|
|
list[len].order = order;
|
303 |
|
|
eni_dev->free_len = len+1;
|
304 |
|
|
/*dump_mem(eni_dev);*/
|
305 |
|
|
}
|
306 |
|
|
|
307 |
|
|
|
308 |
|
|
/*----------------------------------- RX ------------------------------------*/
|
309 |
|
|
|
310 |
|
|
|
311 |
|
|
#define ENI_VCC_NOS ((struct atm_vcc *) 1)
|
312 |
|
|
|
313 |
|
|
|
314 |
|
|
static void rx_ident_err(struct atm_vcc *vcc)
|
315 |
|
|
{
|
316 |
|
|
struct atm_dev *dev;
|
317 |
|
|
struct eni_dev *eni_dev;
|
318 |
|
|
struct eni_vcc *eni_vcc;
|
319 |
|
|
|
320 |
|
|
dev = vcc->dev;
|
321 |
|
|
eni_dev = ENI_DEV(dev);
|
322 |
|
|
/* immediately halt adapter */
|
323 |
|
|
eni_out(eni_in(MID_MC_S) &
|
324 |
|
|
~(MID_DMA_ENABLE | MID_TX_ENABLE | MID_RX_ENABLE),MID_MC_S);
|
325 |
|
|
/* dump useful information */
|
326 |
|
|
eni_vcc = ENI_VCC(vcc);
|
327 |
|
|
printk(KERN_ALERT DEV_LABEL "(itf %d): driver error - RX ident "
|
328 |
|
|
"mismatch\n",dev->number);
|
329 |
|
|
printk(KERN_ALERT " VCI %d, rxing %d, words %ld\n",vcc->vci,
|
330 |
|
|
eni_vcc->rxing,eni_vcc->words);
|
331 |
|
|
printk(KERN_ALERT " host descr 0x%lx, rx pos 0x%lx, descr value "
|
332 |
|
|
"0x%x\n",eni_vcc->descr,eni_vcc->rx_pos,
|
333 |
|
|
(unsigned) readl(eni_vcc->recv+eni_vcc->descr*4));
|
334 |
|
|
printk(KERN_ALERT " last %p, servicing %d\n",eni_vcc->last,
|
335 |
|
|
eni_vcc->servicing);
|
336 |
|
|
EVENT("---dump ends here---\n",0,0);
|
337 |
|
|
printk(KERN_NOTICE "---recent events---\n");
|
338 |
|
|
event_dump();
|
339 |
|
|
ENI_DEV(dev)->fast = NULL; /* really stop it */
|
340 |
|
|
ENI_DEV(dev)->slow = NULL;
|
341 |
|
|
skb_queue_head_init(&ENI_DEV(dev)->rx_queue);
|
342 |
|
|
}
|
343 |
|
|
|
344 |
|
|
|
345 |
|
|
static int do_rx_dma(struct atm_vcc *vcc,struct sk_buff *skb,
|
346 |
|
|
unsigned long skip,unsigned long size,unsigned long eff)
|
347 |
|
|
{
|
348 |
|
|
struct eni_dev *eni_dev;
|
349 |
|
|
struct eni_vcc *eni_vcc;
|
350 |
|
|
u32 dma_rd,dma_wr;
|
351 |
|
|
u32 dma[RX_DMA_BUF*2];
|
352 |
|
|
dma_addr_t paddr;
|
353 |
|
|
unsigned long here;
|
354 |
|
|
int i,j;
|
355 |
|
|
|
356 |
|
|
eni_dev = ENI_DEV(vcc->dev);
|
357 |
|
|
eni_vcc = ENI_VCC(vcc);
|
358 |
|
|
paddr = 0; /* GCC, shut up */
|
359 |
|
|
if (skb) {
|
360 |
|
|
paddr = pci_map_single(eni_dev->pci_dev,skb->data,skb->len,
|
361 |
|
|
PCI_DMA_FROMDEVICE);
|
362 |
|
|
ENI_PRV_PADDR(skb) = paddr;
|
363 |
|
|
if (paddr & 3)
|
364 |
|
|
printk(KERN_CRIT DEV_LABEL "(itf %d): VCI %d has "
|
365 |
|
|
"mis-aligned RX data (0x%lx)\n",vcc->dev->number,
|
366 |
|
|
vcc->vci,(unsigned long) paddr);
|
367 |
|
|
ENI_PRV_SIZE(skb) = size+skip;
|
368 |
|
|
/* PDU plus descriptor */
|
369 |
|
|
ATM_SKB(skb)->vcc = vcc;
|
370 |
|
|
}
|
371 |
|
|
j = 0;
|
372 |
|
|
if ((eff && skip) || 1) { /* @@@ actually, skip is always == 1 ... */
|
373 |
|
|
here = (eni_vcc->descr+skip) & (eni_vcc->words-1);
|
374 |
|
|
dma[j++] = (here << MID_DMA_COUNT_SHIFT) | (vcc->vci
|
375 |
|
|
<< MID_DMA_VCI_SHIFT) | MID_DT_JK;
|
376 |
|
|
j++;
|
377 |
|
|
}
|
378 |
|
|
here = (eni_vcc->descr+size+skip) & (eni_vcc->words-1);
|
379 |
|
|
if (!eff) size += skip;
|
380 |
|
|
else {
|
381 |
|
|
unsigned long words;
|
382 |
|
|
|
383 |
|
|
if (!size) {
|
384 |
|
|
DPRINTK("strange things happen ...\n");
|
385 |
|
|
EVENT("strange things happen ... (skip=%ld,eff=%ld)\n",
|
386 |
|
|
size,eff);
|
387 |
|
|
}
|
388 |
|
|
words = eff;
|
389 |
|
|
if (paddr & 15) {
|
390 |
|
|
unsigned long init;
|
391 |
|
|
|
392 |
|
|
init = 4-((paddr & 15) >> 2);
|
393 |
|
|
if (init > words) init = words;
|
394 |
|
|
dma[j++] = MID_DT_WORD | (init << MID_DMA_COUNT_SHIFT) |
|
395 |
|
|
(vcc->vci << MID_DMA_VCI_SHIFT);
|
396 |
|
|
dma[j++] = paddr;
|
397 |
|
|
paddr += init << 2;
|
398 |
|
|
words -= init;
|
399 |
|
|
}
|
400 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_RX_16W /* may work with some PCI chipsets ... */
|
401 |
|
|
if (words & ~15) {
|
402 |
|
|
dma[j++] = MID_DT_16W | ((words >> 4) <<
|
403 |
|
|
MID_DMA_COUNT_SHIFT) | (vcc->vci <<
|
404 |
|
|
MID_DMA_VCI_SHIFT);
|
405 |
|
|
dma[j++] = paddr;
|
406 |
|
|
paddr += (words & ~15) << 2;
|
407 |
|
|
words &= 15;
|
408 |
|
|
}
|
409 |
|
|
#endif
|
410 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_RX_8W /* works only with *some* PCI chipsets ... */
|
411 |
|
|
if (words & ~7) {
|
412 |
|
|
dma[j++] = MID_DT_8W | ((words >> 3) <<
|
413 |
|
|
MID_DMA_COUNT_SHIFT) | (vcc->vci <<
|
414 |
|
|
MID_DMA_VCI_SHIFT);
|
415 |
|
|
dma[j++] = paddr;
|
416 |
|
|
paddr += (words & ~7) << 2;
|
417 |
|
|
words &= 7;
|
418 |
|
|
}
|
419 |
|
|
#endif
|
420 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_RX_4W /* recommended */
|
421 |
|
|
if (words & ~3) {
|
422 |
|
|
dma[j++] = MID_DT_4W | ((words >> 2) <<
|
423 |
|
|
MID_DMA_COUNT_SHIFT) | (vcc->vci <<
|
424 |
|
|
MID_DMA_VCI_SHIFT);
|
425 |
|
|
dma[j++] = paddr;
|
426 |
|
|
paddr += (words & ~3) << 2;
|
427 |
|
|
words &= 3;
|
428 |
|
|
}
|
429 |
|
|
#endif
|
430 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_RX_2W /* probably useless if RX_4W, RX_8W, ... */
|
431 |
|
|
if (words & ~1) {
|
432 |
|
|
dma[j++] = MID_DT_2W | ((words >> 1) <<
|
433 |
|
|
MID_DMA_COUNT_SHIFT) | (vcc->vci <<
|
434 |
|
|
MID_DMA_VCI_SHIFT);
|
435 |
|
|
dma[j++] = paddr;
|
436 |
|
|
paddr += (words & ~1) << 2;
|
437 |
|
|
words &= 1;
|
438 |
|
|
}
|
439 |
|
|
#endif
|
440 |
|
|
if (words) {
|
441 |
|
|
dma[j++] = MID_DT_WORD | (words << MID_DMA_COUNT_SHIFT)
|
442 |
|
|
| (vcc->vci << MID_DMA_VCI_SHIFT);
|
443 |
|
|
dma[j++] = paddr;
|
444 |
|
|
}
|
445 |
|
|
}
|
446 |
|
|
if (size != eff) {
|
447 |
|
|
dma[j++] = (here << MID_DMA_COUNT_SHIFT) |
|
448 |
|
|
(vcc->vci << MID_DMA_VCI_SHIFT) | MID_DT_JK;
|
449 |
|
|
j++;
|
450 |
|
|
}
|
451 |
|
|
if (!j || j > 2*RX_DMA_BUF) {
|
452 |
|
|
printk(KERN_CRIT DEV_LABEL "!j or j too big!!!\n");
|
453 |
|
|
goto trouble;
|
454 |
|
|
}
|
455 |
|
|
dma[j-2] |= MID_DMA_END;
|
456 |
|
|
j = j >> 1;
|
457 |
|
|
dma_wr = eni_in(MID_DMA_WR_RX);
|
458 |
|
|
dma_rd = eni_in(MID_DMA_RD_RX);
|
459 |
|
|
/*
|
460 |
|
|
* Can I move the dma_wr pointer by 2j+1 positions without overwriting
|
461 |
|
|
* data that hasn't been read (position of dma_rd) yet ?
|
462 |
|
|
*/
|
463 |
|
|
if (!NEPMOK(dma_wr,j+j+1,dma_rd,NR_DMA_RX)) { /* @@@ +1 is ugly */
|
464 |
|
|
printk(KERN_WARNING DEV_LABEL "(itf %d): RX DMA full\n",
|
465 |
|
|
vcc->dev->number);
|
466 |
|
|
goto trouble;
|
467 |
|
|
}
|
468 |
|
|
for (i = 0; i < j; i++) {
|
469 |
|
|
writel(dma[i*2],eni_dev->rx_dma+dma_wr*8);
|
470 |
|
|
writel(dma[i*2+1],eni_dev->rx_dma+dma_wr*8+4);
|
471 |
|
|
dma_wr = (dma_wr+1) & (NR_DMA_RX-1);
|
472 |
|
|
}
|
473 |
|
|
if (skb) {
|
474 |
|
|
ENI_PRV_POS(skb) = eni_vcc->descr+size+1;
|
475 |
|
|
skb_queue_tail(&eni_dev->rx_queue,skb);
|
476 |
|
|
eni_vcc->last = skb;
|
477 |
|
|
rx_enqueued++;
|
478 |
|
|
}
|
479 |
|
|
eni_vcc->descr = here;
|
480 |
|
|
eni_out(dma_wr,MID_DMA_WR_RX);
|
481 |
|
|
return 0;
|
482 |
|
|
|
483 |
|
|
trouble:
|
484 |
|
|
if (paddr)
|
485 |
|
|
pci_unmap_single(eni_dev->pci_dev,paddr,skb->len,
|
486 |
|
|
PCI_DMA_FROMDEVICE);
|
487 |
|
|
if (skb) dev_kfree_skb_irq(skb);
|
488 |
|
|
return -1;
|
489 |
|
|
}
|
490 |
|
|
|
491 |
|
|
|
492 |
|
|
static void discard(struct atm_vcc *vcc,unsigned long size)
|
493 |
|
|
{
|
494 |
|
|
struct eni_vcc *eni_vcc;
|
495 |
|
|
|
496 |
|
|
eni_vcc = ENI_VCC(vcc);
|
497 |
|
|
EVENT("discard (size=%ld)\n",size,0);
|
498 |
|
|
while (do_rx_dma(vcc,NULL,1,size,0)) EVENT("BUSY LOOP",0,0);
|
499 |
|
|
/* could do a full fallback, but that might be more expensive */
|
500 |
|
|
if (eni_vcc->rxing) ENI_PRV_POS(eni_vcc->last) += size+1;
|
501 |
|
|
else eni_vcc->rx_pos = (eni_vcc->rx_pos+size+1) & (eni_vcc->words-1);
|
502 |
|
|
}
|
503 |
|
|
|
504 |
|
|
|
505 |
|
|
/*
|
506 |
|
|
* TODO: should check whether direct copies (without DMA setup, dequeuing on
|
507 |
|
|
* interrupt, etc.) aren't much faster for AAL0
|
508 |
|
|
*/
|
509 |
|
|
|
510 |
|
|
static int rx_aal0(struct atm_vcc *vcc)
|
511 |
|
|
{
|
512 |
|
|
struct eni_vcc *eni_vcc;
|
513 |
|
|
unsigned long descr;
|
514 |
|
|
unsigned long length;
|
515 |
|
|
struct sk_buff *skb;
|
516 |
|
|
|
517 |
|
|
DPRINTK(">rx_aal0\n");
|
518 |
|
|
eni_vcc = ENI_VCC(vcc);
|
519 |
|
|
descr = readl(eni_vcc->recv+eni_vcc->descr*4);
|
520 |
|
|
if ((descr & MID_RED_IDEN) != (MID_RED_RX_ID << MID_RED_SHIFT)) {
|
521 |
|
|
rx_ident_err(vcc);
|
522 |
|
|
return 1;
|
523 |
|
|
}
|
524 |
|
|
if (descr & MID_RED_T) {
|
525 |
|
|
DPRINTK(DEV_LABEL "(itf %d): trashing empty cell\n",
|
526 |
|
|
vcc->dev->number);
|
527 |
|
|
length = 0;
|
528 |
|
|
atomic_inc(&vcc->stats->rx_err);
|
529 |
|
|
}
|
530 |
|
|
else {
|
531 |
|
|
length = ATM_CELL_SIZE-1; /* no HEC */
|
532 |
|
|
}
|
533 |
|
|
skb = length ? atm_alloc_charge(vcc,length,GFP_ATOMIC) : NULL;
|
534 |
|
|
if (!skb) {
|
535 |
|
|
discard(vcc,length >> 2);
|
536 |
|
|
return 0;
|
537 |
|
|
}
|
538 |
|
|
skb_put(skb,length);
|
539 |
|
|
skb->tstamp = eni_vcc->timestamp;
|
540 |
|
|
DPRINTK("got len %ld\n",length);
|
541 |
|
|
if (do_rx_dma(vcc,skb,1,length >> 2,length >> 2)) return 1;
|
542 |
|
|
eni_vcc->rxing++;
|
543 |
|
|
return 0;
|
544 |
|
|
}
|
545 |
|
|
|
546 |
|
|
|
547 |
|
|
static int rx_aal5(struct atm_vcc *vcc)
|
548 |
|
|
{
|
549 |
|
|
struct eni_vcc *eni_vcc;
|
550 |
|
|
unsigned long descr;
|
551 |
|
|
unsigned long size,eff,length;
|
552 |
|
|
struct sk_buff *skb;
|
553 |
|
|
|
554 |
|
|
EVENT("rx_aal5\n",0,0);
|
555 |
|
|
DPRINTK(">rx_aal5\n");
|
556 |
|
|
eni_vcc = ENI_VCC(vcc);
|
557 |
|
|
descr = readl(eni_vcc->recv+eni_vcc->descr*4);
|
558 |
|
|
if ((descr & MID_RED_IDEN) != (MID_RED_RX_ID << MID_RED_SHIFT)) {
|
559 |
|
|
rx_ident_err(vcc);
|
560 |
|
|
return 1;
|
561 |
|
|
}
|
562 |
|
|
if (descr & (MID_RED_T | MID_RED_CRC_ERR)) {
|
563 |
|
|
if (descr & MID_RED_T) {
|
564 |
|
|
EVENT("empty cell (descr=0x%lx)\n",descr,0);
|
565 |
|
|
DPRINTK(DEV_LABEL "(itf %d): trashing empty cell\n",
|
566 |
|
|
vcc->dev->number);
|
567 |
|
|
size = 0;
|
568 |
|
|
}
|
569 |
|
|
else {
|
570 |
|
|
static unsigned long silence = 0;
|
571 |
|
|
|
572 |
|
|
if (time_after(jiffies, silence) || silence == 0) {
|
573 |
|
|
printk(KERN_WARNING DEV_LABEL "(itf %d): "
|
574 |
|
|
"discarding PDU(s) with CRC error\n",
|
575 |
|
|
vcc->dev->number);
|
576 |
|
|
silence = (jiffies+2*HZ)|1;
|
577 |
|
|
}
|
578 |
|
|
size = (descr & MID_RED_COUNT)*(ATM_CELL_PAYLOAD >> 2);
|
579 |
|
|
EVENT("CRC error (descr=0x%lx,size=%ld)\n",descr,
|
580 |
|
|
size);
|
581 |
|
|
}
|
582 |
|
|
eff = length = 0;
|
583 |
|
|
atomic_inc(&vcc->stats->rx_err);
|
584 |
|
|
}
|
585 |
|
|
else {
|
586 |
|
|
size = (descr & MID_RED_COUNT)*(ATM_CELL_PAYLOAD >> 2);
|
587 |
|
|
DPRINTK("size=%ld\n",size);
|
588 |
|
|
length = readl(eni_vcc->recv+(((eni_vcc->descr+size-1) &
|
589 |
|
|
(eni_vcc->words-1)))*4) & 0xffff;
|
590 |
|
|
/* -trailer(2)+header(1) */
|
591 |
|
|
if (length && length <= (size << 2)-8 && length <=
|
592 |
|
|
ATM_MAX_AAL5_PDU) eff = (length+3) >> 2;
|
593 |
|
|
else { /* ^ trailer length (8) */
|
594 |
|
|
EVENT("bad PDU (descr=0x08%lx,length=%ld)\n",descr,
|
595 |
|
|
length);
|
596 |
|
|
printk(KERN_ERR DEV_LABEL "(itf %d): bad AAL5 PDU "
|
597 |
|
|
"(VCI=%d,length=%ld,size=%ld (descr 0x%lx))\n",
|
598 |
|
|
vcc->dev->number,vcc->vci,length,size << 2,descr);
|
599 |
|
|
length = eff = 0;
|
600 |
|
|
atomic_inc(&vcc->stats->rx_err);
|
601 |
|
|
}
|
602 |
|
|
}
|
603 |
|
|
skb = eff ? atm_alloc_charge(vcc,eff << 2,GFP_ATOMIC) : NULL;
|
604 |
|
|
if (!skb) {
|
605 |
|
|
discard(vcc,size);
|
606 |
|
|
return 0;
|
607 |
|
|
}
|
608 |
|
|
skb_put(skb,length);
|
609 |
|
|
DPRINTK("got len %ld\n",length);
|
610 |
|
|
if (do_rx_dma(vcc,skb,1,size,eff)) return 1;
|
611 |
|
|
eni_vcc->rxing++;
|
612 |
|
|
return 0;
|
613 |
|
|
}
|
614 |
|
|
|
615 |
|
|
|
616 |
|
|
static inline int rx_vcc(struct atm_vcc *vcc)
|
617 |
|
|
{
|
618 |
|
|
void __iomem *vci_dsc;
|
619 |
|
|
unsigned long tmp;
|
620 |
|
|
struct eni_vcc *eni_vcc;
|
621 |
|
|
|
622 |
|
|
eni_vcc = ENI_VCC(vcc);
|
623 |
|
|
vci_dsc = ENI_DEV(vcc->dev)->vci+vcc->vci*16;
|
624 |
|
|
EVENT("rx_vcc(1)\n",0,0);
|
625 |
|
|
while (eni_vcc->descr != (tmp = (readl(vci_dsc+4) & MID_VCI_DESCR) >>
|
626 |
|
|
MID_VCI_DESCR_SHIFT)) {
|
627 |
|
|
EVENT("rx_vcc(2: host dsc=0x%lx, nic dsc=0x%lx)\n",
|
628 |
|
|
eni_vcc->descr,tmp);
|
629 |
|
|
DPRINTK("CB_DESCR %ld REG_DESCR %d\n",ENI_VCC(vcc)->descr,
|
630 |
|
|
(((unsigned) readl(vci_dsc+4) & MID_VCI_DESCR) >>
|
631 |
|
|
MID_VCI_DESCR_SHIFT));
|
632 |
|
|
if (ENI_VCC(vcc)->rx(vcc)) return 1;
|
633 |
|
|
}
|
634 |
|
|
/* clear IN_SERVICE flag */
|
635 |
|
|
writel(readl(vci_dsc) & ~MID_VCI_IN_SERVICE,vci_dsc);
|
636 |
|
|
/*
|
637 |
|
|
* If new data has arrived between evaluating the while condition and
|
638 |
|
|
* clearing IN_SERVICE, we wouldn't be notified until additional data
|
639 |
|
|
* follows. So we have to loop again to be sure.
|
640 |
|
|
*/
|
641 |
|
|
EVENT("rx_vcc(3)\n",0,0);
|
642 |
|
|
while (ENI_VCC(vcc)->descr != (tmp = (readl(vci_dsc+4) & MID_VCI_DESCR)
|
643 |
|
|
>> MID_VCI_DESCR_SHIFT)) {
|
644 |
|
|
EVENT("rx_vcc(4: host dsc=0x%lx, nic dsc=0x%lx)\n",
|
645 |
|
|
eni_vcc->descr,tmp);
|
646 |
|
|
DPRINTK("CB_DESCR %ld REG_DESCR %d\n",ENI_VCC(vcc)->descr,
|
647 |
|
|
(((unsigned) readl(vci_dsc+4) & MID_VCI_DESCR) >>
|
648 |
|
|
MID_VCI_DESCR_SHIFT));
|
649 |
|
|
if (ENI_VCC(vcc)->rx(vcc)) return 1;
|
650 |
|
|
}
|
651 |
|
|
return 0;
|
652 |
|
|
}
|
653 |
|
|
|
654 |
|
|
|
655 |
|
|
static void poll_rx(struct atm_dev *dev)
|
656 |
|
|
{
|
657 |
|
|
struct eni_dev *eni_dev;
|
658 |
|
|
struct atm_vcc *curr;
|
659 |
|
|
|
660 |
|
|
eni_dev = ENI_DEV(dev);
|
661 |
|
|
while ((curr = eni_dev->fast)) {
|
662 |
|
|
EVENT("poll_rx.fast\n",0,0);
|
663 |
|
|
if (rx_vcc(curr)) return;
|
664 |
|
|
eni_dev->fast = ENI_VCC(curr)->next;
|
665 |
|
|
ENI_VCC(curr)->next = ENI_VCC_NOS;
|
666 |
|
|
barrier();
|
667 |
|
|
ENI_VCC(curr)->servicing--;
|
668 |
|
|
}
|
669 |
|
|
while ((curr = eni_dev->slow)) {
|
670 |
|
|
EVENT("poll_rx.slow\n",0,0);
|
671 |
|
|
if (rx_vcc(curr)) return;
|
672 |
|
|
eni_dev->slow = ENI_VCC(curr)->next;
|
673 |
|
|
ENI_VCC(curr)->next = ENI_VCC_NOS;
|
674 |
|
|
barrier();
|
675 |
|
|
ENI_VCC(curr)->servicing--;
|
676 |
|
|
}
|
677 |
|
|
}
|
678 |
|
|
|
679 |
|
|
|
680 |
|
|
static void get_service(struct atm_dev *dev)
|
681 |
|
|
{
|
682 |
|
|
struct eni_dev *eni_dev;
|
683 |
|
|
struct atm_vcc *vcc;
|
684 |
|
|
unsigned long vci;
|
685 |
|
|
|
686 |
|
|
DPRINTK(">get_service\n");
|
687 |
|
|
eni_dev = ENI_DEV(dev);
|
688 |
|
|
while (eni_in(MID_SERV_WRITE) != eni_dev->serv_read) {
|
689 |
|
|
vci = readl(eni_dev->service+eni_dev->serv_read*4);
|
690 |
|
|
eni_dev->serv_read = (eni_dev->serv_read+1) & (NR_SERVICE-1);
|
691 |
|
|
vcc = eni_dev->rx_map[vci & 1023];
|
692 |
|
|
if (!vcc) {
|
693 |
|
|
printk(KERN_CRIT DEV_LABEL "(itf %d): VCI %ld not "
|
694 |
|
|
"found\n",dev->number,vci);
|
695 |
|
|
continue; /* nasty but we try to go on anyway */
|
696 |
|
|
/* @@@ nope, doesn't work */
|
697 |
|
|
}
|
698 |
|
|
EVENT("getting from service\n",0,0);
|
699 |
|
|
if (ENI_VCC(vcc)->next != ENI_VCC_NOS) {
|
700 |
|
|
EVENT("double service\n",0,0);
|
701 |
|
|
DPRINTK("Grr, servicing VCC %ld twice\n",vci);
|
702 |
|
|
continue;
|
703 |
|
|
}
|
704 |
|
|
ENI_VCC(vcc)->timestamp = ktime_get_real();
|
705 |
|
|
ENI_VCC(vcc)->next = NULL;
|
706 |
|
|
if (vcc->qos.rxtp.traffic_class == ATM_CBR) {
|
707 |
|
|
if (eni_dev->fast)
|
708 |
|
|
ENI_VCC(eni_dev->last_fast)->next = vcc;
|
709 |
|
|
else eni_dev->fast = vcc;
|
710 |
|
|
eni_dev->last_fast = vcc;
|
711 |
|
|
}
|
712 |
|
|
else {
|
713 |
|
|
if (eni_dev->slow)
|
714 |
|
|
ENI_VCC(eni_dev->last_slow)->next = vcc;
|
715 |
|
|
else eni_dev->slow = vcc;
|
716 |
|
|
eni_dev->last_slow = vcc;
|
717 |
|
|
}
|
718 |
|
|
putting++;
|
719 |
|
|
ENI_VCC(vcc)->servicing++;
|
720 |
|
|
}
|
721 |
|
|
}
|
722 |
|
|
|
723 |
|
|
|
724 |
|
|
static void dequeue_rx(struct atm_dev *dev)
|
725 |
|
|
{
|
726 |
|
|
struct eni_dev *eni_dev;
|
727 |
|
|
struct eni_vcc *eni_vcc;
|
728 |
|
|
struct atm_vcc *vcc;
|
729 |
|
|
struct sk_buff *skb;
|
730 |
|
|
void __iomem *vci_dsc;
|
731 |
|
|
int first;
|
732 |
|
|
|
733 |
|
|
eni_dev = ENI_DEV(dev);
|
734 |
|
|
first = 1;
|
735 |
|
|
while (1) {
|
736 |
|
|
skb = skb_dequeue(&eni_dev->rx_queue);
|
737 |
|
|
if (!skb) {
|
738 |
|
|
if (first) {
|
739 |
|
|
DPRINTK(DEV_LABEL "(itf %d): RX but not "
|
740 |
|
|
"rxing\n",dev->number);
|
741 |
|
|
EVENT("nothing to dequeue\n",0,0);
|
742 |
|
|
}
|
743 |
|
|
break;
|
744 |
|
|
}
|
745 |
|
|
EVENT("dequeued (size=%ld,pos=0x%lx)\n",ENI_PRV_SIZE(skb),
|
746 |
|
|
ENI_PRV_POS(skb));
|
747 |
|
|
rx_dequeued++;
|
748 |
|
|
vcc = ATM_SKB(skb)->vcc;
|
749 |
|
|
eni_vcc = ENI_VCC(vcc);
|
750 |
|
|
first = 0;
|
751 |
|
|
vci_dsc = eni_dev->vci+vcc->vci*16;
|
752 |
|
|
if (!EEPMOK(eni_vcc->rx_pos,ENI_PRV_SIZE(skb),
|
753 |
|
|
(readl(vci_dsc+4) & MID_VCI_READ) >> MID_VCI_READ_SHIFT,
|
754 |
|
|
eni_vcc->words)) {
|
755 |
|
|
EVENT("requeuing\n",0,0);
|
756 |
|
|
skb_queue_head(&eni_dev->rx_queue,skb);
|
757 |
|
|
break;
|
758 |
|
|
}
|
759 |
|
|
eni_vcc->rxing--;
|
760 |
|
|
eni_vcc->rx_pos = ENI_PRV_POS(skb) & (eni_vcc->words-1);
|
761 |
|
|
pci_unmap_single(eni_dev->pci_dev,ENI_PRV_PADDR(skb),skb->len,
|
762 |
|
|
PCI_DMA_TODEVICE);
|
763 |
|
|
if (!skb->len) dev_kfree_skb_irq(skb);
|
764 |
|
|
else {
|
765 |
|
|
EVENT("pushing (len=%ld)\n",skb->len,0);
|
766 |
|
|
if (vcc->qos.aal == ATM_AAL0)
|
767 |
|
|
*(unsigned long *) skb->data =
|
768 |
|
|
ntohl(*(unsigned long *) skb->data);
|
769 |
|
|
memset(skb->cb,0,sizeof(struct eni_skb_prv));
|
770 |
|
|
vcc->push(vcc,skb);
|
771 |
|
|
pushed++;
|
772 |
|
|
}
|
773 |
|
|
atomic_inc(&vcc->stats->rx);
|
774 |
|
|
}
|
775 |
|
|
wake_up(&eni_dev->rx_wait);
|
776 |
|
|
}
|
777 |
|
|
|
778 |
|
|
|
779 |
|
|
static int open_rx_first(struct atm_vcc *vcc)
|
780 |
|
|
{
|
781 |
|
|
struct eni_dev *eni_dev;
|
782 |
|
|
struct eni_vcc *eni_vcc;
|
783 |
|
|
unsigned long size;
|
784 |
|
|
|
785 |
|
|
DPRINTK("open_rx_first\n");
|
786 |
|
|
eni_dev = ENI_DEV(vcc->dev);
|
787 |
|
|
eni_vcc = ENI_VCC(vcc);
|
788 |
|
|
eni_vcc->rx = NULL;
|
789 |
|
|
if (vcc->qos.rxtp.traffic_class == ATM_NONE) return 0;
|
790 |
|
|
size = vcc->qos.rxtp.max_sdu*eni_dev->rx_mult/100;
|
791 |
|
|
if (size > MID_MAX_BUF_SIZE && vcc->qos.rxtp.max_sdu <=
|
792 |
|
|
MID_MAX_BUF_SIZE)
|
793 |
|
|
size = MID_MAX_BUF_SIZE;
|
794 |
|
|
eni_vcc->recv = eni_alloc_mem(eni_dev,&size);
|
795 |
|
|
DPRINTK("rx at 0x%lx\n",eni_vcc->recv);
|
796 |
|
|
eni_vcc->words = size >> 2;
|
797 |
|
|
if (!eni_vcc->recv) return -ENOBUFS;
|
798 |
|
|
eni_vcc->rx = vcc->qos.aal == ATM_AAL5 ? rx_aal5 : rx_aal0;
|
799 |
|
|
eni_vcc->descr = 0;
|
800 |
|
|
eni_vcc->rx_pos = 0;
|
801 |
|
|
eni_vcc->rxing = 0;
|
802 |
|
|
eni_vcc->servicing = 0;
|
803 |
|
|
eni_vcc->next = ENI_VCC_NOS;
|
804 |
|
|
return 0;
|
805 |
|
|
}
|
806 |
|
|
|
807 |
|
|
|
808 |
|
|
static int open_rx_second(struct atm_vcc *vcc)
|
809 |
|
|
{
|
810 |
|
|
void __iomem *here;
|
811 |
|
|
struct eni_dev *eni_dev;
|
812 |
|
|
struct eni_vcc *eni_vcc;
|
813 |
|
|
unsigned long size;
|
814 |
|
|
int order;
|
815 |
|
|
|
816 |
|
|
DPRINTK("open_rx_second\n");
|
817 |
|
|
eni_dev = ENI_DEV(vcc->dev);
|
818 |
|
|
eni_vcc = ENI_VCC(vcc);
|
819 |
|
|
if (!eni_vcc->rx) return 0;
|
820 |
|
|
/* set up VCI descriptor */
|
821 |
|
|
here = eni_dev->vci+vcc->vci*16;
|
822 |
|
|
DPRINTK("loc 0x%x\n",(unsigned) (eni_vcc->recv-eni_dev->ram)/4);
|
823 |
|
|
size = eni_vcc->words >> 8;
|
824 |
|
|
for (order = -1; size; order++) size >>= 1;
|
825 |
|
|
writel(0,here+4); /* descr, read = 0 */
|
826 |
|
|
writel(0,here+8); /* write, state, count = 0 */
|
827 |
|
|
if (eni_dev->rx_map[vcc->vci])
|
828 |
|
|
printk(KERN_CRIT DEV_LABEL "(itf %d): BUG - VCI %d already "
|
829 |
|
|
"in use\n",vcc->dev->number,vcc->vci);
|
830 |
|
|
eni_dev->rx_map[vcc->vci] = vcc; /* now it counts */
|
831 |
|
|
writel(((vcc->qos.aal != ATM_AAL5 ? MID_MODE_RAW : MID_MODE_AAL5) <<
|
832 |
|
|
MID_VCI_MODE_SHIFT) | MID_VCI_PTI_MODE |
|
833 |
|
|
(((eni_vcc->recv-eni_dev->ram) >> (MID_LOC_SKIP+2)) <<
|
834 |
|
|
MID_VCI_LOCATION_SHIFT) | (order << MID_VCI_SIZE_SHIFT),here);
|
835 |
|
|
return 0;
|
836 |
|
|
}
|
837 |
|
|
|
838 |
|
|
|
839 |
|
|
static void close_rx(struct atm_vcc *vcc)
|
840 |
|
|
{
|
841 |
|
|
DECLARE_WAITQUEUE(wait,current);
|
842 |
|
|
void __iomem *here;
|
843 |
|
|
struct eni_dev *eni_dev;
|
844 |
|
|
struct eni_vcc *eni_vcc;
|
845 |
|
|
|
846 |
|
|
eni_vcc = ENI_VCC(vcc);
|
847 |
|
|
if (!eni_vcc->rx) return;
|
848 |
|
|
eni_dev = ENI_DEV(vcc->dev);
|
849 |
|
|
if (vcc->vpi != ATM_VPI_UNSPEC && vcc->vci != ATM_VCI_UNSPEC) {
|
850 |
|
|
here = eni_dev->vci+vcc->vci*16;
|
851 |
|
|
/* block receiver */
|
852 |
|
|
writel((readl(here) & ~MID_VCI_MODE) | (MID_MODE_TRASH <<
|
853 |
|
|
MID_VCI_MODE_SHIFT),here);
|
854 |
|
|
/* wait for receiver to become idle */
|
855 |
|
|
udelay(27);
|
856 |
|
|
/* discard pending cell */
|
857 |
|
|
writel(readl(here) & ~MID_VCI_IN_SERVICE,here);
|
858 |
|
|
/* don't accept any new ones */
|
859 |
|
|
eni_dev->rx_map[vcc->vci] = NULL;
|
860 |
|
|
/* wait for RX queue to drain */
|
861 |
|
|
DPRINTK("eni_close: waiting for RX ...\n");
|
862 |
|
|
EVENT("RX closing\n",0,0);
|
863 |
|
|
add_wait_queue(&eni_dev->rx_wait,&wait);
|
864 |
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
865 |
|
|
barrier();
|
866 |
|
|
for (;;) {
|
867 |
|
|
/* transition service->rx: rxing++, servicing-- */
|
868 |
|
|
if (!eni_vcc->servicing) {
|
869 |
|
|
barrier();
|
870 |
|
|
if (!eni_vcc->rxing) break;
|
871 |
|
|
}
|
872 |
|
|
EVENT("drain PDUs (rx %ld, serv %ld)\n",eni_vcc->rxing,
|
873 |
|
|
eni_vcc->servicing);
|
874 |
|
|
printk(KERN_INFO "%d+%d RX left\n",eni_vcc->servicing,
|
875 |
|
|
eni_vcc->rxing);
|
876 |
|
|
schedule();
|
877 |
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
878 |
|
|
}
|
879 |
|
|
for (;;) {
|
880 |
|
|
int at_end;
|
881 |
|
|
u32 tmp;
|
882 |
|
|
|
883 |
|
|
tasklet_disable(&eni_dev->task);
|
884 |
|
|
tmp = readl(eni_dev->vci+vcc->vci*16+4) & MID_VCI_READ;
|
885 |
|
|
at_end = eni_vcc->rx_pos == tmp >> MID_VCI_READ_SHIFT;
|
886 |
|
|
tasklet_enable(&eni_dev->task);
|
887 |
|
|
if (at_end) break;
|
888 |
|
|
EVENT("drain discard (host 0x%lx, nic 0x%lx)\n",
|
889 |
|
|
eni_vcc->rx_pos,tmp);
|
890 |
|
|
printk(KERN_INFO "draining RX: host 0x%lx, nic 0x%x\n",
|
891 |
|
|
eni_vcc->rx_pos,tmp);
|
892 |
|
|
schedule();
|
893 |
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
894 |
|
|
}
|
895 |
|
|
set_current_state(TASK_RUNNING);
|
896 |
|
|
remove_wait_queue(&eni_dev->rx_wait,&wait);
|
897 |
|
|
}
|
898 |
|
|
eni_free_mem(eni_dev,eni_vcc->recv,eni_vcc->words << 2);
|
899 |
|
|
eni_vcc->rx = NULL;
|
900 |
|
|
}
|
901 |
|
|
|
902 |
|
|
|
903 |
|
|
static int start_rx(struct atm_dev *dev)
|
904 |
|
|
{
|
905 |
|
|
struct eni_dev *eni_dev;
|
906 |
|
|
|
907 |
|
|
eni_dev = ENI_DEV(dev);
|
908 |
|
|
eni_dev->rx_map = (struct atm_vcc **) get_zeroed_page(GFP_KERNEL);
|
909 |
|
|
if (!eni_dev->rx_map) {
|
910 |
|
|
printk(KERN_ERR DEV_LABEL "(itf %d): couldn't get free page\n",
|
911 |
|
|
dev->number);
|
912 |
|
|
free_page((unsigned long) eni_dev->free_list);
|
913 |
|
|
return -ENOMEM;
|
914 |
|
|
}
|
915 |
|
|
eni_dev->rx_mult = DEFAULT_RX_MULT;
|
916 |
|
|
eni_dev->fast = eni_dev->last_fast = NULL;
|
917 |
|
|
eni_dev->slow = eni_dev->last_slow = NULL;
|
918 |
|
|
init_waitqueue_head(&eni_dev->rx_wait);
|
919 |
|
|
skb_queue_head_init(&eni_dev->rx_queue);
|
920 |
|
|
eni_dev->serv_read = eni_in(MID_SERV_WRITE);
|
921 |
|
|
eni_out(0,MID_DMA_WR_RX);
|
922 |
|
|
return 0;
|
923 |
|
|
}
|
924 |
|
|
|
925 |
|
|
|
926 |
|
|
/*----------------------------------- TX ------------------------------------*/
|
927 |
|
|
|
928 |
|
|
|
929 |
|
|
enum enq_res { enq_ok,enq_next,enq_jam };
|
930 |
|
|
|
931 |
|
|
|
932 |
|
|
static inline void put_dma(int chan,u32 *dma,int *j,dma_addr_t paddr,
|
933 |
|
|
u32 size)
|
934 |
|
|
{
|
935 |
|
|
u32 init,words;
|
936 |
|
|
|
937 |
|
|
DPRINTK("put_dma: 0x%lx+0x%x\n",(unsigned long) paddr,size);
|
938 |
|
|
EVENT("put_dma: 0x%lx+0x%lx\n",(unsigned long) paddr,size);
|
939 |
|
|
#if 0 /* don't complain anymore */
|
940 |
|
|
if (paddr & 3)
|
941 |
|
|
printk(KERN_ERR "put_dma: unaligned addr (0x%lx)\n",paddr);
|
942 |
|
|
if (size & 3)
|
943 |
|
|
printk(KERN_ERR "put_dma: unaligned size (0x%lx)\n",size);
|
944 |
|
|
#endif
|
945 |
|
|
if (paddr & 3) {
|
946 |
|
|
init = 4-(paddr & 3);
|
947 |
|
|
if (init > size || size < 7) init = size;
|
948 |
|
|
DPRINTK("put_dma: %lx DMA: %d/%d bytes\n",
|
949 |
|
|
(unsigned long) paddr,init,size);
|
950 |
|
|
dma[(*j)++] = MID_DT_BYTE | (init << MID_DMA_COUNT_SHIFT) |
|
951 |
|
|
(chan << MID_DMA_CHAN_SHIFT);
|
952 |
|
|
dma[(*j)++] = paddr;
|
953 |
|
|
paddr += init;
|
954 |
|
|
size -= init;
|
955 |
|
|
}
|
956 |
|
|
words = size >> 2;
|
957 |
|
|
size &= 3;
|
958 |
|
|
if (words && (paddr & 31)) {
|
959 |
|
|
init = 8-((paddr & 31) >> 2);
|
960 |
|
|
if (init > words) init = words;
|
961 |
|
|
DPRINTK("put_dma: %lx DMA: %d/%d words\n",
|
962 |
|
|
(unsigned long) paddr,init,words);
|
963 |
|
|
dma[(*j)++] = MID_DT_WORD | (init << MID_DMA_COUNT_SHIFT) |
|
964 |
|
|
(chan << MID_DMA_CHAN_SHIFT);
|
965 |
|
|
dma[(*j)++] = paddr;
|
966 |
|
|
paddr += init << 2;
|
967 |
|
|
words -= init;
|
968 |
|
|
}
|
969 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_TX_16W /* may work with some PCI chipsets ... */
|
970 |
|
|
if (words & ~15) {
|
971 |
|
|
DPRINTK("put_dma: %lx DMA: %d*16/%d words\n",
|
972 |
|
|
(unsigned long) paddr,words >> 4,words);
|
973 |
|
|
dma[(*j)++] = MID_DT_16W | ((words >> 4) << MID_DMA_COUNT_SHIFT)
|
974 |
|
|
| (chan << MID_DMA_CHAN_SHIFT);
|
975 |
|
|
dma[(*j)++] = paddr;
|
976 |
|
|
paddr += (words & ~15) << 2;
|
977 |
|
|
words &= 15;
|
978 |
|
|
}
|
979 |
|
|
#endif
|
980 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_TX_8W /* recommended */
|
981 |
|
|
if (words & ~7) {
|
982 |
|
|
DPRINTK("put_dma: %lx DMA: %d*8/%d words\n",
|
983 |
|
|
(unsigned long) paddr,words >> 3,words);
|
984 |
|
|
dma[(*j)++] = MID_DT_8W | ((words >> 3) << MID_DMA_COUNT_SHIFT)
|
985 |
|
|
| (chan << MID_DMA_CHAN_SHIFT);
|
986 |
|
|
dma[(*j)++] = paddr;
|
987 |
|
|
paddr += (words & ~7) << 2;
|
988 |
|
|
words &= 7;
|
989 |
|
|
}
|
990 |
|
|
#endif
|
991 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_TX_4W /* probably useless if TX_8W or TX_16W */
|
992 |
|
|
if (words & ~3) {
|
993 |
|
|
DPRINTK("put_dma: %lx DMA: %d*4/%d words\n",
|
994 |
|
|
(unsigned long) paddr,words >> 2,words);
|
995 |
|
|
dma[(*j)++] = MID_DT_4W | ((words >> 2) << MID_DMA_COUNT_SHIFT)
|
996 |
|
|
| (chan << MID_DMA_CHAN_SHIFT);
|
997 |
|
|
dma[(*j)++] = paddr;
|
998 |
|
|
paddr += (words & ~3) << 2;
|
999 |
|
|
words &= 3;
|
1000 |
|
|
}
|
1001 |
|
|
#endif
|
1002 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_TX_2W /* probably useless if TX_4W, TX_8W, ... */
|
1003 |
|
|
if (words & ~1) {
|
1004 |
|
|
DPRINTK("put_dma: %lx DMA: %d*2/%d words\n",
|
1005 |
|
|
(unsigned long) paddr,words >> 1,words);
|
1006 |
|
|
dma[(*j)++] = MID_DT_2W | ((words >> 1) << MID_DMA_COUNT_SHIFT)
|
1007 |
|
|
| (chan << MID_DMA_CHAN_SHIFT);
|
1008 |
|
|
dma[(*j)++] = paddr;
|
1009 |
|
|
paddr += (words & ~1) << 2;
|
1010 |
|
|
words &= 1;
|
1011 |
|
|
}
|
1012 |
|
|
#endif
|
1013 |
|
|
if (words) {
|
1014 |
|
|
DPRINTK("put_dma: %lx DMA: %d words\n",(unsigned long) paddr,
|
1015 |
|
|
words);
|
1016 |
|
|
dma[(*j)++] = MID_DT_WORD | (words << MID_DMA_COUNT_SHIFT) |
|
1017 |
|
|
(chan << MID_DMA_CHAN_SHIFT);
|
1018 |
|
|
dma[(*j)++] = paddr;
|
1019 |
|
|
paddr += words << 2;
|
1020 |
|
|
}
|
1021 |
|
|
if (size) {
|
1022 |
|
|
DPRINTK("put_dma: %lx DMA: %d bytes\n",(unsigned long) paddr,
|
1023 |
|
|
size);
|
1024 |
|
|
dma[(*j)++] = MID_DT_BYTE | (size << MID_DMA_COUNT_SHIFT) |
|
1025 |
|
|
(chan << MID_DMA_CHAN_SHIFT);
|
1026 |
|
|
dma[(*j)++] = paddr;
|
1027 |
|
|
}
|
1028 |
|
|
}
|
1029 |
|
|
|
1030 |
|
|
|
1031 |
|
|
static enum enq_res do_tx(struct sk_buff *skb)
|
1032 |
|
|
{
|
1033 |
|
|
struct atm_vcc *vcc;
|
1034 |
|
|
struct eni_dev *eni_dev;
|
1035 |
|
|
struct eni_vcc *eni_vcc;
|
1036 |
|
|
struct eni_tx *tx;
|
1037 |
|
|
dma_addr_t paddr;
|
1038 |
|
|
u32 dma_rd,dma_wr;
|
1039 |
|
|
u32 size; /* in words */
|
1040 |
|
|
int aal5,dma_size,i,j;
|
1041 |
|
|
|
1042 |
|
|
DPRINTK(">do_tx\n");
|
1043 |
|
|
NULLCHECK(skb);
|
1044 |
|
|
EVENT("do_tx: skb=0x%lx, %ld bytes\n",(unsigned long) skb,skb->len);
|
1045 |
|
|
vcc = ATM_SKB(skb)->vcc;
|
1046 |
|
|
NULLCHECK(vcc);
|
1047 |
|
|
eni_dev = ENI_DEV(vcc->dev);
|
1048 |
|
|
NULLCHECK(eni_dev);
|
1049 |
|
|
eni_vcc = ENI_VCC(vcc);
|
1050 |
|
|
tx = eni_vcc->tx;
|
1051 |
|
|
NULLCHECK(tx);
|
1052 |
|
|
#if 0 /* Enable this for testing with the "align" program */
|
1053 |
|
|
{
|
1054 |
|
|
unsigned int hack = *((char *) skb->data)-'0';
|
1055 |
|
|
|
1056 |
|
|
if (hack < 8) {
|
1057 |
|
|
skb->data += hack;
|
1058 |
|
|
skb->len -= hack;
|
1059 |
|
|
}
|
1060 |
|
|
}
|
1061 |
|
|
#endif
|
1062 |
|
|
#if 0 /* should work now */
|
1063 |
|
|
if ((unsigned long) skb->data & 3)
|
1064 |
|
|
printk(KERN_ERR DEV_LABEL "(itf %d): VCI %d has mis-aligned "
|
1065 |
|
|
"TX data\n",vcc->dev->number,vcc->vci);
|
1066 |
|
|
#endif
|
1067 |
|
|
/*
|
1068 |
|
|
* Potential future IP speedup: make hard_header big enough to put
|
1069 |
|
|
* segmentation descriptor directly into PDU. Saves: 4 slave writes,
|
1070 |
|
|
* 1 DMA xfer & 2 DMA'ed bytes (protocol layering is for wimps :-)
|
1071 |
|
|
*/
|
1072 |
|
|
|
1073 |
|
|
aal5 = vcc->qos.aal == ATM_AAL5;
|
1074 |
|
|
/* check space in buffer */
|
1075 |
|
|
if (!aal5)
|
1076 |
|
|
size = (ATM_CELL_PAYLOAD >> 2)+TX_DESCR_SIZE;
|
1077 |
|
|
/* cell without HEC plus segmentation header (includes
|
1078 |
|
|
four-byte cell header) */
|
1079 |
|
|
else {
|
1080 |
|
|
size = skb->len+4*AAL5_TRAILER+ATM_CELL_PAYLOAD-1;
|
1081 |
|
|
/* add AAL5 trailer */
|
1082 |
|
|
size = ((size-(size % ATM_CELL_PAYLOAD)) >> 2)+TX_DESCR_SIZE;
|
1083 |
|
|
/* add segmentation header */
|
1084 |
|
|
}
|
1085 |
|
|
/*
|
1086 |
|
|
* Can I move tx_pos by size bytes without getting closer than TX_GAP
|
1087 |
|
|
* to the read pointer ? TX_GAP means to leave some space for what
|
1088 |
|
|
* the manual calls "too close".
|
1089 |
|
|
*/
|
1090 |
|
|
if (!NEPMOK(tx->tx_pos,size+TX_GAP,
|
1091 |
|
|
eni_in(MID_TX_RDPTR(tx->index)),tx->words)) {
|
1092 |
|
|
DPRINTK(DEV_LABEL "(itf %d): TX full (size %d)\n",
|
1093 |
|
|
vcc->dev->number,size);
|
1094 |
|
|
return enq_next;
|
1095 |
|
|
}
|
1096 |
|
|
/* check DMA */
|
1097 |
|
|
dma_wr = eni_in(MID_DMA_WR_TX);
|
1098 |
|
|
dma_rd = eni_in(MID_DMA_RD_TX);
|
1099 |
|
|
dma_size = 3; /* JK for descriptor and final fill, plus final size
|
1100 |
|
|
mis-alignment fix */
|
1101 |
|
|
DPRINTK("iovcnt = %d\n",skb_shinfo(skb)->nr_frags);
|
1102 |
|
|
if (!skb_shinfo(skb)->nr_frags) dma_size += 5;
|
1103 |
|
|
else dma_size += 5*(skb_shinfo(skb)->nr_frags+1);
|
1104 |
|
|
if (dma_size > TX_DMA_BUF) {
|
1105 |
|
|
printk(KERN_CRIT DEV_LABEL "(itf %d): needs %d DMA entries "
|
1106 |
|
|
"(got only %d)\n",vcc->dev->number,dma_size,TX_DMA_BUF);
|
1107 |
|
|
}
|
1108 |
|
|
DPRINTK("dma_wr is %d, tx_pos is %ld\n",dma_wr,tx->tx_pos);
|
1109 |
|
|
if (dma_wr != dma_rd && ((dma_rd+NR_DMA_TX-dma_wr) & (NR_DMA_TX-1)) <
|
1110 |
|
|
dma_size) {
|
1111 |
|
|
printk(KERN_WARNING DEV_LABEL "(itf %d): TX DMA full\n",
|
1112 |
|
|
vcc->dev->number);
|
1113 |
|
|
return enq_jam;
|
1114 |
|
|
}
|
1115 |
|
|
paddr = pci_map_single(eni_dev->pci_dev,skb->data,skb->len,
|
1116 |
|
|
PCI_DMA_TODEVICE);
|
1117 |
|
|
ENI_PRV_PADDR(skb) = paddr;
|
1118 |
|
|
/* prepare DMA queue entries */
|
1119 |
|
|
j = 0;
|
1120 |
|
|
eni_dev->dma[j++] = (((tx->tx_pos+TX_DESCR_SIZE) & (tx->words-1)) <<
|
1121 |
|
|
MID_DMA_COUNT_SHIFT) | (tx->index << MID_DMA_CHAN_SHIFT) |
|
1122 |
|
|
MID_DT_JK;
|
1123 |
|
|
j++;
|
1124 |
|
|
if (!skb_shinfo(skb)->nr_frags)
|
1125 |
|
|
if (aal5) put_dma(tx->index,eni_dev->dma,&j,paddr,skb->len);
|
1126 |
|
|
else put_dma(tx->index,eni_dev->dma,&j,paddr+4,skb->len-4);
|
1127 |
|
|
else {
|
1128 |
|
|
DPRINTK("doing direct send\n"); /* @@@ well, this doesn't work anyway */
|
1129 |
|
|
for (i = -1; i < skb_shinfo(skb)->nr_frags; i++)
|
1130 |
|
|
if (i == -1)
|
1131 |
|
|
put_dma(tx->index,eni_dev->dma,&j,(unsigned long)
|
1132 |
|
|
skb->data,
|
1133 |
|
|
skb->len - skb->data_len);
|
1134 |
|
|
else
|
1135 |
|
|
put_dma(tx->index,eni_dev->dma,&j,(unsigned long)
|
1136 |
|
|
skb_shinfo(skb)->frags[i].page + skb_shinfo(skb)->frags[i].page_offset,
|
1137 |
|
|
skb_shinfo(skb)->frags[i].size);
|
1138 |
|
|
}
|
1139 |
|
|
if (skb->len & 3)
|
1140 |
|
|
put_dma(tx->index,eni_dev->dma,&j,zeroes,4-(skb->len & 3));
|
1141 |
|
|
/* JK for AAL5 trailer - AAL0 doesn't need it, but who cares ... */
|
1142 |
|
|
eni_dev->dma[j++] = (((tx->tx_pos+size) & (tx->words-1)) <<
|
1143 |
|
|
MID_DMA_COUNT_SHIFT) | (tx->index << MID_DMA_CHAN_SHIFT) |
|
1144 |
|
|
MID_DMA_END | MID_DT_JK;
|
1145 |
|
|
j++;
|
1146 |
|
|
DPRINTK("DMA at end: %d\n",j);
|
1147 |
|
|
/* store frame */
|
1148 |
|
|
writel((MID_SEG_TX_ID << MID_SEG_ID_SHIFT) |
|
1149 |
|
|
(aal5 ? MID_SEG_AAL5 : 0) | (tx->prescaler << MID_SEG_PR_SHIFT) |
|
1150 |
|
|
(tx->resolution << MID_SEG_RATE_SHIFT) |
|
1151 |
|
|
(size/(ATM_CELL_PAYLOAD/4)),tx->send+tx->tx_pos*4);
|
1152 |
|
|
/*printk("dsc = 0x%08lx\n",(unsigned long) readl(tx->send+tx->tx_pos*4));*/
|
1153 |
|
|
writel((vcc->vci << MID_SEG_VCI_SHIFT) |
|
1154 |
|
|
(aal5 ? 0 : (skb->data[3] & 0xf)) |
|
1155 |
|
|
(ATM_SKB(skb)->atm_options & ATM_ATMOPT_CLP ? MID_SEG_CLP : 0),
|
1156 |
|
|
tx->send+((tx->tx_pos+1) & (tx->words-1))*4);
|
1157 |
|
|
DPRINTK("size: %d, len:%d\n",size,skb->len);
|
1158 |
|
|
if (aal5)
|
1159 |
|
|
writel(skb->len,tx->send+
|
1160 |
|
|
((tx->tx_pos+size-AAL5_TRAILER) & (tx->words-1))*4);
|
1161 |
|
|
j = j >> 1;
|
1162 |
|
|
for (i = 0; i < j; i++) {
|
1163 |
|
|
writel(eni_dev->dma[i*2],eni_dev->tx_dma+dma_wr*8);
|
1164 |
|
|
writel(eni_dev->dma[i*2+1],eni_dev->tx_dma+dma_wr*8+4);
|
1165 |
|
|
dma_wr = (dma_wr+1) & (NR_DMA_TX-1);
|
1166 |
|
|
}
|
1167 |
|
|
ENI_PRV_POS(skb) = tx->tx_pos;
|
1168 |
|
|
ENI_PRV_SIZE(skb) = size;
|
1169 |
|
|
ENI_VCC(vcc)->txing += size;
|
1170 |
|
|
tx->tx_pos = (tx->tx_pos+size) & (tx->words-1);
|
1171 |
|
|
DPRINTK("dma_wr set to %d, tx_pos is now %ld\n",dma_wr,tx->tx_pos);
|
1172 |
|
|
eni_out(dma_wr,MID_DMA_WR_TX);
|
1173 |
|
|
skb_queue_tail(&eni_dev->tx_queue,skb);
|
1174 |
|
|
queued++;
|
1175 |
|
|
return enq_ok;
|
1176 |
|
|
}
|
1177 |
|
|
|
1178 |
|
|
|
1179 |
|
|
static void poll_tx(struct atm_dev *dev)
|
1180 |
|
|
{
|
1181 |
|
|
struct eni_tx *tx;
|
1182 |
|
|
struct sk_buff *skb;
|
1183 |
|
|
enum enq_res res;
|
1184 |
|
|
int i;
|
1185 |
|
|
|
1186 |
|
|
DPRINTK(">poll_tx\n");
|
1187 |
|
|
for (i = NR_CHAN-1; i >= 0; i--) {
|
1188 |
|
|
tx = &ENI_DEV(dev)->tx[i];
|
1189 |
|
|
if (tx->send)
|
1190 |
|
|
while ((skb = skb_dequeue(&tx->backlog))) {
|
1191 |
|
|
res = do_tx(skb);
|
1192 |
|
|
if (res == enq_ok) continue;
|
1193 |
|
|
DPRINTK("re-queuing TX PDU\n");
|
1194 |
|
|
skb_queue_head(&tx->backlog,skb);
|
1195 |
|
|
requeued++;
|
1196 |
|
|
if (res == enq_jam) return;
|
1197 |
|
|
break;
|
1198 |
|
|
}
|
1199 |
|
|
}
|
1200 |
|
|
}
|
1201 |
|
|
|
1202 |
|
|
|
1203 |
|
|
static void dequeue_tx(struct atm_dev *dev)
|
1204 |
|
|
{
|
1205 |
|
|
struct eni_dev *eni_dev;
|
1206 |
|
|
struct atm_vcc *vcc;
|
1207 |
|
|
struct sk_buff *skb;
|
1208 |
|
|
struct eni_tx *tx;
|
1209 |
|
|
|
1210 |
|
|
NULLCHECK(dev);
|
1211 |
|
|
eni_dev = ENI_DEV(dev);
|
1212 |
|
|
NULLCHECK(eni_dev);
|
1213 |
|
|
while ((skb = skb_dequeue(&eni_dev->tx_queue))) {
|
1214 |
|
|
vcc = ATM_SKB(skb)->vcc;
|
1215 |
|
|
NULLCHECK(vcc);
|
1216 |
|
|
tx = ENI_VCC(vcc)->tx;
|
1217 |
|
|
NULLCHECK(ENI_VCC(vcc)->tx);
|
1218 |
|
|
DPRINTK("dequeue_tx: next 0x%lx curr 0x%x\n",ENI_PRV_POS(skb),
|
1219 |
|
|
(unsigned) eni_in(MID_TX_DESCRSTART(tx->index)));
|
1220 |
|
|
if (ENI_VCC(vcc)->txing < tx->words && ENI_PRV_POS(skb) ==
|
1221 |
|
|
eni_in(MID_TX_DESCRSTART(tx->index))) {
|
1222 |
|
|
skb_queue_head(&eni_dev->tx_queue,skb);
|
1223 |
|
|
break;
|
1224 |
|
|
}
|
1225 |
|
|
ENI_VCC(vcc)->txing -= ENI_PRV_SIZE(skb);
|
1226 |
|
|
pci_unmap_single(eni_dev->pci_dev,ENI_PRV_PADDR(skb),skb->len,
|
1227 |
|
|
PCI_DMA_TODEVICE);
|
1228 |
|
|
if (vcc->pop) vcc->pop(vcc,skb);
|
1229 |
|
|
else dev_kfree_skb_irq(skb);
|
1230 |
|
|
atomic_inc(&vcc->stats->tx);
|
1231 |
|
|
wake_up(&eni_dev->tx_wait);
|
1232 |
|
|
dma_complete++;
|
1233 |
|
|
}
|
1234 |
|
|
}
|
1235 |
|
|
|
1236 |
|
|
|
1237 |
|
|
static struct eni_tx *alloc_tx(struct eni_dev *eni_dev,int ubr)
|
1238 |
|
|
{
|
1239 |
|
|
int i;
|
1240 |
|
|
|
1241 |
|
|
for (i = !ubr; i < NR_CHAN; i++)
|
1242 |
|
|
if (!eni_dev->tx[i].send) return eni_dev->tx+i;
|
1243 |
|
|
return NULL;
|
1244 |
|
|
}
|
1245 |
|
|
|
1246 |
|
|
|
1247 |
|
|
static int comp_tx(struct eni_dev *eni_dev,int *pcr,int reserved,int *pre,
|
1248 |
|
|
int *res,int unlimited)
|
1249 |
|
|
{
|
1250 |
|
|
static const int pre_div[] = { 4,16,128,2048 };
|
1251 |
|
|
/* 2^(((x+2)^2-(x+2))/2+1) */
|
1252 |
|
|
|
1253 |
|
|
if (unlimited) *pre = *res = 0;
|
1254 |
|
|
else {
|
1255 |
|
|
if (*pcr > 0) {
|
1256 |
|
|
int div;
|
1257 |
|
|
|
1258 |
|
|
for (*pre = 0; *pre < 3; (*pre)++)
|
1259 |
|
|
if (TS_CLOCK/pre_div[*pre]/64 <= *pcr) break;
|
1260 |
|
|
div = pre_div[*pre]**pcr;
|
1261 |
|
|
DPRINTK("min div %d\n",div);
|
1262 |
|
|
*res = TS_CLOCK/div-1;
|
1263 |
|
|
}
|
1264 |
|
|
else {
|
1265 |
|
|
int div;
|
1266 |
|
|
|
1267 |
|
|
if (!*pcr) *pcr = eni_dev->tx_bw+reserved;
|
1268 |
|
|
for (*pre = 3; *pre >= 0; (*pre)--)
|
1269 |
|
|
if (TS_CLOCK/pre_div[*pre]/64 > -*pcr) break;
|
1270 |
|
|
if (*pre < 3) (*pre)++; /* else fail later */
|
1271 |
|
|
div = pre_div[*pre]*-*pcr;
|
1272 |
|
|
DPRINTK("max div %d\n",div);
|
1273 |
|
|
*res = (TS_CLOCK+div-1)/div-1;
|
1274 |
|
|
}
|
1275 |
|
|
if (*res < 0) *res = 0;
|
1276 |
|
|
if (*res > MID_SEG_MAX_RATE) *res = MID_SEG_MAX_RATE;
|
1277 |
|
|
}
|
1278 |
|
|
*pcr = TS_CLOCK/pre_div[*pre]/(*res+1);
|
1279 |
|
|
DPRINTK("out pcr: %d (%d:%d)\n",*pcr,*pre,*res);
|
1280 |
|
|
return 0;
|
1281 |
|
|
}
|
1282 |
|
|
|
1283 |
|
|
|
1284 |
|
|
static int reserve_or_set_tx(struct atm_vcc *vcc,struct atm_trafprm *txtp,
|
1285 |
|
|
int set_rsv,int set_shp)
|
1286 |
|
|
{
|
1287 |
|
|
struct eni_dev *eni_dev = ENI_DEV(vcc->dev);
|
1288 |
|
|
struct eni_vcc *eni_vcc = ENI_VCC(vcc);
|
1289 |
|
|
struct eni_tx *tx;
|
1290 |
|
|
unsigned long size;
|
1291 |
|
|
void __iomem *mem;
|
1292 |
|
|
int rate,ubr,unlimited,new_tx;
|
1293 |
|
|
int pre,res,order;
|
1294 |
|
|
int error;
|
1295 |
|
|
|
1296 |
|
|
rate = atm_pcr_goal(txtp);
|
1297 |
|
|
ubr = txtp->traffic_class == ATM_UBR;
|
1298 |
|
|
unlimited = ubr && (!rate || rate <= -ATM_OC3_PCR ||
|
1299 |
|
|
rate >= ATM_OC3_PCR);
|
1300 |
|
|
if (!unlimited) {
|
1301 |
|
|
size = txtp->max_sdu*eni_dev->tx_mult/100;
|
1302 |
|
|
if (size > MID_MAX_BUF_SIZE && txtp->max_sdu <=
|
1303 |
|
|
MID_MAX_BUF_SIZE)
|
1304 |
|
|
size = MID_MAX_BUF_SIZE;
|
1305 |
|
|
}
|
1306 |
|
|
else {
|
1307 |
|
|
if (eni_dev->ubr) {
|
1308 |
|
|
eni_vcc->tx = eni_dev->ubr;
|
1309 |
|
|
txtp->pcr = ATM_OC3_PCR;
|
1310 |
|
|
return 0;
|
1311 |
|
|
}
|
1312 |
|
|
size = UBR_BUFFER;
|
1313 |
|
|
}
|
1314 |
|
|
new_tx = !eni_vcc->tx;
|
1315 |
|
|
mem = NULL; /* for gcc */
|
1316 |
|
|
if (!new_tx) tx = eni_vcc->tx;
|
1317 |
|
|
else {
|
1318 |
|
|
mem = eni_alloc_mem(eni_dev,&size);
|
1319 |
|
|
if (!mem) return -ENOBUFS;
|
1320 |
|
|
tx = alloc_tx(eni_dev,unlimited);
|
1321 |
|
|
if (!tx) {
|
1322 |
|
|
eni_free_mem(eni_dev,mem,size);
|
1323 |
|
|
return -EBUSY;
|
1324 |
|
|
}
|
1325 |
|
|
DPRINTK("got chan %d\n",tx->index);
|
1326 |
|
|
tx->reserved = tx->shaping = 0;
|
1327 |
|
|
tx->send = mem;
|
1328 |
|
|
tx->words = size >> 2;
|
1329 |
|
|
skb_queue_head_init(&tx->backlog);
|
1330 |
|
|
for (order = 0; size > (1 << (order+10)); order++);
|
1331 |
|
|
eni_out((order << MID_SIZE_SHIFT) |
|
1332 |
|
|
((tx->send-eni_dev->ram) >> (MID_LOC_SKIP+2)),
|
1333 |
|
|
MID_TX_PLACE(tx->index));
|
1334 |
|
|
tx->tx_pos = eni_in(MID_TX_DESCRSTART(tx->index)) &
|
1335 |
|
|
MID_DESCR_START;
|
1336 |
|
|
}
|
1337 |
|
|
error = comp_tx(eni_dev,&rate,tx->reserved,&pre,&res,unlimited);
|
1338 |
|
|
if (!error && txtp->min_pcr > rate) error = -EINVAL;
|
1339 |
|
|
if (!error && txtp->max_pcr && txtp->max_pcr != ATM_MAX_PCR &&
|
1340 |
|
|
txtp->max_pcr < rate) error = -EINVAL;
|
1341 |
|
|
if (!error && !ubr && rate > eni_dev->tx_bw+tx->reserved)
|
1342 |
|
|
error = -EINVAL;
|
1343 |
|
|
if (!error && set_rsv && !set_shp && rate < tx->shaping)
|
1344 |
|
|
error = -EINVAL;
|
1345 |
|
|
if (!error && !set_rsv && rate > tx->reserved && !ubr)
|
1346 |
|
|
error = -EINVAL;
|
1347 |
|
|
if (error) {
|
1348 |
|
|
if (new_tx) {
|
1349 |
|
|
tx->send = NULL;
|
1350 |
|
|
eni_free_mem(eni_dev,mem,size);
|
1351 |
|
|
}
|
1352 |
|
|
return error;
|
1353 |
|
|
}
|
1354 |
|
|
txtp->pcr = rate;
|
1355 |
|
|
if (set_rsv && !ubr) {
|
1356 |
|
|
eni_dev->tx_bw += tx->reserved;
|
1357 |
|
|
tx->reserved = rate;
|
1358 |
|
|
eni_dev->tx_bw -= rate;
|
1359 |
|
|
}
|
1360 |
|
|
if (set_shp || (unlimited && new_tx)) {
|
1361 |
|
|
if (unlimited && new_tx) eni_dev->ubr = tx;
|
1362 |
|
|
tx->prescaler = pre;
|
1363 |
|
|
tx->resolution = res;
|
1364 |
|
|
tx->shaping = rate;
|
1365 |
|
|
}
|
1366 |
|
|
if (set_shp) eni_vcc->tx = tx;
|
1367 |
|
|
DPRINTK("rsv %d shp %d\n",tx->reserved,tx->shaping);
|
1368 |
|
|
return 0;
|
1369 |
|
|
}
|
1370 |
|
|
|
1371 |
|
|
|
1372 |
|
|
static int open_tx_first(struct atm_vcc *vcc)
|
1373 |
|
|
{
|
1374 |
|
|
ENI_VCC(vcc)->tx = NULL;
|
1375 |
|
|
if (vcc->qos.txtp.traffic_class == ATM_NONE) return 0;
|
1376 |
|
|
ENI_VCC(vcc)->txing = 0;
|
1377 |
|
|
return reserve_or_set_tx(vcc,&vcc->qos.txtp,1,1);
|
1378 |
|
|
}
|
1379 |
|
|
|
1380 |
|
|
|
1381 |
|
|
static int open_tx_second(struct atm_vcc *vcc)
|
1382 |
|
|
{
|
1383 |
|
|
return 0; /* nothing to do */
|
1384 |
|
|
}
|
1385 |
|
|
|
1386 |
|
|
|
1387 |
|
|
static void close_tx(struct atm_vcc *vcc)
|
1388 |
|
|
{
|
1389 |
|
|
DECLARE_WAITQUEUE(wait,current);
|
1390 |
|
|
struct eni_dev *eni_dev;
|
1391 |
|
|
struct eni_vcc *eni_vcc;
|
1392 |
|
|
|
1393 |
|
|
eni_vcc = ENI_VCC(vcc);
|
1394 |
|
|
if (!eni_vcc->tx) return;
|
1395 |
|
|
eni_dev = ENI_DEV(vcc->dev);
|
1396 |
|
|
/* wait for TX queue to drain */
|
1397 |
|
|
DPRINTK("eni_close: waiting for TX ...\n");
|
1398 |
|
|
add_wait_queue(&eni_dev->tx_wait,&wait);
|
1399 |
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
1400 |
|
|
for (;;) {
|
1401 |
|
|
int txing;
|
1402 |
|
|
|
1403 |
|
|
tasklet_disable(&eni_dev->task);
|
1404 |
|
|
txing = skb_peek(&eni_vcc->tx->backlog) || eni_vcc->txing;
|
1405 |
|
|
tasklet_enable(&eni_dev->task);
|
1406 |
|
|
if (!txing) break;
|
1407 |
|
|
DPRINTK("%d TX left\n",eni_vcc->txing);
|
1408 |
|
|
schedule();
|
1409 |
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
1410 |
|
|
}
|
1411 |
|
|
set_current_state(TASK_RUNNING);
|
1412 |
|
|
remove_wait_queue(&eni_dev->tx_wait,&wait);
|
1413 |
|
|
if (eni_vcc->tx != eni_dev->ubr) {
|
1414 |
|
|
/*
|
1415 |
|
|
* Looping a few times in here is probably far cheaper than
|
1416 |
|
|
* keeping track of TX completions all the time, so let's poll
|
1417 |
|
|
* a bit ...
|
1418 |
|
|
*/
|
1419 |
|
|
while (eni_in(MID_TX_RDPTR(eni_vcc->tx->index)) !=
|
1420 |
|
|
eni_in(MID_TX_DESCRSTART(eni_vcc->tx->index)))
|
1421 |
|
|
schedule();
|
1422 |
|
|
eni_free_mem(eni_dev,eni_vcc->tx->send,eni_vcc->tx->words << 2);
|
1423 |
|
|
eni_vcc->tx->send = NULL;
|
1424 |
|
|
eni_dev->tx_bw += eni_vcc->tx->reserved;
|
1425 |
|
|
}
|
1426 |
|
|
eni_vcc->tx = NULL;
|
1427 |
|
|
}
|
1428 |
|
|
|
1429 |
|
|
|
1430 |
|
|
static int start_tx(struct atm_dev *dev)
|
1431 |
|
|
{
|
1432 |
|
|
struct eni_dev *eni_dev;
|
1433 |
|
|
int i;
|
1434 |
|
|
|
1435 |
|
|
eni_dev = ENI_DEV(dev);
|
1436 |
|
|
eni_dev->lost = 0;
|
1437 |
|
|
eni_dev->tx_bw = ATM_OC3_PCR;
|
1438 |
|
|
eni_dev->tx_mult = DEFAULT_TX_MULT;
|
1439 |
|
|
init_waitqueue_head(&eni_dev->tx_wait);
|
1440 |
|
|
eni_dev->ubr = NULL;
|
1441 |
|
|
skb_queue_head_init(&eni_dev->tx_queue);
|
1442 |
|
|
eni_out(0,MID_DMA_WR_TX);
|
1443 |
|
|
for (i = 0; i < NR_CHAN; i++) {
|
1444 |
|
|
eni_dev->tx[i].send = NULL;
|
1445 |
|
|
eni_dev->tx[i].index = i;
|
1446 |
|
|
}
|
1447 |
|
|
return 0;
|
1448 |
|
|
}
|
1449 |
|
|
|
1450 |
|
|
|
1451 |
|
|
/*--------------------------------- common ----------------------------------*/
|
1452 |
|
|
|
1453 |
|
|
|
1454 |
|
|
#if 0 /* may become useful again when tuning things */
|
1455 |
|
|
|
1456 |
|
|
static void foo(void)
|
1457 |
|
|
{
|
1458 |
|
|
printk(KERN_INFO
|
1459 |
|
|
"tx_complete=%d,dma_complete=%d,queued=%d,requeued=%d,sub=%d,\n"
|
1460 |
|
|
"backlogged=%d,rx_enqueued=%d,rx_dequeued=%d,putting=%d,pushed=%d\n",
|
1461 |
|
|
tx_complete,dma_complete,queued,requeued,submitted,backlogged,
|
1462 |
|
|
rx_enqueued,rx_dequeued,putting,pushed);
|
1463 |
|
|
if (eni_boards) printk(KERN_INFO "loss: %ld\n",ENI_DEV(eni_boards)->lost);
|
1464 |
|
|
}
|
1465 |
|
|
|
1466 |
|
|
#endif
|
1467 |
|
|
|
1468 |
|
|
|
1469 |
|
|
static void bug_int(struct atm_dev *dev,unsigned long reason)
|
1470 |
|
|
{
|
1471 |
|
|
struct eni_dev *eni_dev;
|
1472 |
|
|
|
1473 |
|
|
DPRINTK(">bug_int\n");
|
1474 |
|
|
eni_dev = ENI_DEV(dev);
|
1475 |
|
|
if (reason & MID_DMA_ERR_ACK)
|
1476 |
|
|
printk(KERN_CRIT DEV_LABEL "(itf %d): driver error - DMA "
|
1477 |
|
|
"error\n",dev->number);
|
1478 |
|
|
if (reason & MID_TX_IDENT_MISM)
|
1479 |
|
|
printk(KERN_CRIT DEV_LABEL "(itf %d): driver error - ident "
|
1480 |
|
|
"mismatch\n",dev->number);
|
1481 |
|
|
if (reason & MID_TX_DMA_OVFL)
|
1482 |
|
|
printk(KERN_CRIT DEV_LABEL "(itf %d): driver error - DMA "
|
1483 |
|
|
"overflow\n",dev->number);
|
1484 |
|
|
EVENT("---dump ends here---\n",0,0);
|
1485 |
|
|
printk(KERN_NOTICE "---recent events---\n");
|
1486 |
|
|
event_dump();
|
1487 |
|
|
}
|
1488 |
|
|
|
1489 |
|
|
|
1490 |
|
|
static irqreturn_t eni_int(int irq,void *dev_id)
|
1491 |
|
|
{
|
1492 |
|
|
struct atm_dev *dev;
|
1493 |
|
|
struct eni_dev *eni_dev;
|
1494 |
|
|
u32 reason;
|
1495 |
|
|
|
1496 |
|
|
DPRINTK(">eni_int\n");
|
1497 |
|
|
dev = dev_id;
|
1498 |
|
|
eni_dev = ENI_DEV(dev);
|
1499 |
|
|
reason = eni_in(MID_ISA);
|
1500 |
|
|
DPRINTK(DEV_LABEL ": int 0x%lx\n",(unsigned long) reason);
|
1501 |
|
|
/*
|
1502 |
|
|
* Must handle these two right now, because reading ISA doesn't clear
|
1503 |
|
|
* them, so they re-occur and we never make it to the tasklet. Since
|
1504 |
|
|
* they're rare, we don't mind the occasional invocation of eni_tasklet
|
1505 |
|
|
* with eni_dev->events == 0.
|
1506 |
|
|
*/
|
1507 |
|
|
if (reason & MID_STAT_OVFL) {
|
1508 |
|
|
EVENT("stat overflow\n",0,0);
|
1509 |
|
|
eni_dev->lost += eni_in(MID_STAT) & MID_OVFL_TRASH;
|
1510 |
|
|
}
|
1511 |
|
|
if (reason & MID_SUNI_INT) {
|
1512 |
|
|
EVENT("SUNI int\n",0,0);
|
1513 |
|
|
dev->phy->interrupt(dev);
|
1514 |
|
|
#if 0
|
1515 |
|
|
foo();
|
1516 |
|
|
#endif
|
1517 |
|
|
}
|
1518 |
|
|
spin_lock(&eni_dev->lock);
|
1519 |
|
|
eni_dev->events |= reason;
|
1520 |
|
|
spin_unlock(&eni_dev->lock);
|
1521 |
|
|
tasklet_schedule(&eni_dev->task);
|
1522 |
|
|
return IRQ_HANDLED;
|
1523 |
|
|
}
|
1524 |
|
|
|
1525 |
|
|
|
1526 |
|
|
static void eni_tasklet(unsigned long data)
|
1527 |
|
|
{
|
1528 |
|
|
struct atm_dev *dev = (struct atm_dev *) data;
|
1529 |
|
|
struct eni_dev *eni_dev = ENI_DEV(dev);
|
1530 |
|
|
unsigned long flags;
|
1531 |
|
|
u32 events;
|
1532 |
|
|
|
1533 |
|
|
DPRINTK("eni_tasklet (dev %p)\n",dev);
|
1534 |
|
|
spin_lock_irqsave(&eni_dev->lock,flags);
|
1535 |
|
|
events = xchg(&eni_dev->events,0);
|
1536 |
|
|
spin_unlock_irqrestore(&eni_dev->lock,flags);
|
1537 |
|
|
if (events & MID_RX_DMA_COMPLETE) {
|
1538 |
|
|
EVENT("INT: RX DMA complete, starting dequeue_rx\n",0,0);
|
1539 |
|
|
dequeue_rx(dev);
|
1540 |
|
|
EVENT("dequeue_rx done, starting poll_rx\n",0,0);
|
1541 |
|
|
poll_rx(dev);
|
1542 |
|
|
EVENT("poll_rx done\n",0,0);
|
1543 |
|
|
/* poll_tx ? */
|
1544 |
|
|
}
|
1545 |
|
|
if (events & MID_SERVICE) {
|
1546 |
|
|
EVENT("INT: service, starting get_service\n",0,0);
|
1547 |
|
|
get_service(dev);
|
1548 |
|
|
EVENT("get_service done, starting poll_rx\n",0,0);
|
1549 |
|
|
poll_rx(dev);
|
1550 |
|
|
EVENT("poll_rx done\n",0,0);
|
1551 |
|
|
}
|
1552 |
|
|
if (events & MID_TX_DMA_COMPLETE) {
|
1553 |
|
|
EVENT("INT: TX DMA COMPLETE\n",0,0);
|
1554 |
|
|
dequeue_tx(dev);
|
1555 |
|
|
}
|
1556 |
|
|
if (events & MID_TX_COMPLETE) {
|
1557 |
|
|
EVENT("INT: TX COMPLETE\n",0,0);
|
1558 |
|
|
tx_complete++;
|
1559 |
|
|
wake_up(&eni_dev->tx_wait);
|
1560 |
|
|
/* poll_rx ? */
|
1561 |
|
|
}
|
1562 |
|
|
if (events & (MID_DMA_ERR_ACK | MID_TX_IDENT_MISM | MID_TX_DMA_OVFL)) {
|
1563 |
|
|
EVENT("bug interrupt\n",0,0);
|
1564 |
|
|
bug_int(dev,events);
|
1565 |
|
|
}
|
1566 |
|
|
poll_tx(dev);
|
1567 |
|
|
}
|
1568 |
|
|
|
1569 |
|
|
|
1570 |
|
|
/*--------------------------------- entries ---------------------------------*/
|
1571 |
|
|
|
1572 |
|
|
|
1573 |
|
|
static const char *media_name[] __devinitdata = {
|
1574 |
|
|
"MMF", "SMF", "MMF", "03?", /* 0- 3 */
|
1575 |
|
|
"UTP", "05?", "06?", "07?", /* 4- 7 */
|
1576 |
|
|
"TAXI","09?", "10?", "11?", /* 8-11 */
|
1577 |
|
|
"12?", "13?", "14?", "15?", /* 12-15 */
|
1578 |
|
|
"MMF", "SMF", "18?", "19?", /* 16-19 */
|
1579 |
|
|
"UTP", "21?", "22?", "23?", /* 20-23 */
|
1580 |
|
|
"24?", "25?", "26?", "27?", /* 24-27 */
|
1581 |
|
|
"28?", "29?", "30?", "31?" /* 28-31 */
|
1582 |
|
|
};
|
1583 |
|
|
|
1584 |
|
|
|
1585 |
|
|
#define SET_SEPROM \
|
1586 |
|
|
({ if (!error && !pci_error) { \
|
1587 |
|
|
pci_error = pci_write_config_byte(eni_dev->pci_dev,PCI_TONGA_CTRL,tonga); \
|
1588 |
|
|
udelay(10); /* 10 usecs */ \
|
1589 |
|
|
} })
|
1590 |
|
|
#define GET_SEPROM \
|
1591 |
|
|
({ if (!error && !pci_error) { \
|
1592 |
|
|
pci_error = pci_read_config_byte(eni_dev->pci_dev,PCI_TONGA_CTRL,&tonga); \
|
1593 |
|
|
udelay(10); /* 10 usecs */ \
|
1594 |
|
|
} })
|
1595 |
|
|
|
1596 |
|
|
|
1597 |
|
|
static int __devinit get_esi_asic(struct atm_dev *dev)
|
1598 |
|
|
{
|
1599 |
|
|
struct eni_dev *eni_dev;
|
1600 |
|
|
unsigned char tonga;
|
1601 |
|
|
int error,failed,pci_error;
|
1602 |
|
|
int address,i,j;
|
1603 |
|
|
|
1604 |
|
|
eni_dev = ENI_DEV(dev);
|
1605 |
|
|
error = pci_error = 0;
|
1606 |
|
|
tonga = SEPROM_MAGIC | SEPROM_DATA | SEPROM_CLK;
|
1607 |
|
|
SET_SEPROM;
|
1608 |
|
|
for (i = 0; i < ESI_LEN && !error && !pci_error; i++) {
|
1609 |
|
|
/* start operation */
|
1610 |
|
|
tonga |= SEPROM_DATA;
|
1611 |
|
|
SET_SEPROM;
|
1612 |
|
|
tonga |= SEPROM_CLK;
|
1613 |
|
|
SET_SEPROM;
|
1614 |
|
|
tonga &= ~SEPROM_DATA;
|
1615 |
|
|
SET_SEPROM;
|
1616 |
|
|
tonga &= ~SEPROM_CLK;
|
1617 |
|
|
SET_SEPROM;
|
1618 |
|
|
/* send address */
|
1619 |
|
|
address = ((i+SEPROM_ESI_BASE) << 1)+1;
|
1620 |
|
|
for (j = 7; j >= 0; j--) {
|
1621 |
|
|
tonga = (address >> j) & 1 ? tonga | SEPROM_DATA :
|
1622 |
|
|
tonga & ~SEPROM_DATA;
|
1623 |
|
|
SET_SEPROM;
|
1624 |
|
|
tonga |= SEPROM_CLK;
|
1625 |
|
|
SET_SEPROM;
|
1626 |
|
|
tonga &= ~SEPROM_CLK;
|
1627 |
|
|
SET_SEPROM;
|
1628 |
|
|
}
|
1629 |
|
|
/* get ack */
|
1630 |
|
|
tonga |= SEPROM_DATA;
|
1631 |
|
|
SET_SEPROM;
|
1632 |
|
|
tonga |= SEPROM_CLK;
|
1633 |
|
|
SET_SEPROM;
|
1634 |
|
|
GET_SEPROM;
|
1635 |
|
|
failed = tonga & SEPROM_DATA;
|
1636 |
|
|
tonga &= ~SEPROM_CLK;
|
1637 |
|
|
SET_SEPROM;
|
1638 |
|
|
tonga |= SEPROM_DATA;
|
1639 |
|
|
SET_SEPROM;
|
1640 |
|
|
if (failed) error = -EIO;
|
1641 |
|
|
else {
|
1642 |
|
|
dev->esi[i] = 0;
|
1643 |
|
|
for (j = 7; j >= 0; j--) {
|
1644 |
|
|
dev->esi[i] <<= 1;
|
1645 |
|
|
tonga |= SEPROM_DATA;
|
1646 |
|
|
SET_SEPROM;
|
1647 |
|
|
tonga |= SEPROM_CLK;
|
1648 |
|
|
SET_SEPROM;
|
1649 |
|
|
GET_SEPROM;
|
1650 |
|
|
if (tonga & SEPROM_DATA) dev->esi[i] |= 1;
|
1651 |
|
|
tonga &= ~SEPROM_CLK;
|
1652 |
|
|
SET_SEPROM;
|
1653 |
|
|
tonga |= SEPROM_DATA;
|
1654 |
|
|
SET_SEPROM;
|
1655 |
|
|
}
|
1656 |
|
|
/* get ack */
|
1657 |
|
|
tonga |= SEPROM_DATA;
|
1658 |
|
|
SET_SEPROM;
|
1659 |
|
|
tonga |= SEPROM_CLK;
|
1660 |
|
|
SET_SEPROM;
|
1661 |
|
|
GET_SEPROM;
|
1662 |
|
|
if (!(tonga & SEPROM_DATA)) error = -EIO;
|
1663 |
|
|
tonga &= ~SEPROM_CLK;
|
1664 |
|
|
SET_SEPROM;
|
1665 |
|
|
tonga |= SEPROM_DATA;
|
1666 |
|
|
SET_SEPROM;
|
1667 |
|
|
}
|
1668 |
|
|
/* stop operation */
|
1669 |
|
|
tonga &= ~SEPROM_DATA;
|
1670 |
|
|
SET_SEPROM;
|
1671 |
|
|
tonga |= SEPROM_CLK;
|
1672 |
|
|
SET_SEPROM;
|
1673 |
|
|
tonga |= SEPROM_DATA;
|
1674 |
|
|
SET_SEPROM;
|
1675 |
|
|
}
|
1676 |
|
|
if (pci_error) {
|
1677 |
|
|
printk(KERN_ERR DEV_LABEL "(itf %d): error reading ESI "
|
1678 |
|
|
"(0x%02x)\n",dev->number,pci_error);
|
1679 |
|
|
error = -EIO;
|
1680 |
|
|
}
|
1681 |
|
|
return error;
|
1682 |
|
|
}
|
1683 |
|
|
|
1684 |
|
|
|
1685 |
|
|
#undef SET_SEPROM
|
1686 |
|
|
#undef GET_SEPROM
|
1687 |
|
|
|
1688 |
|
|
|
1689 |
|
|
static int __devinit get_esi_fpga(struct atm_dev *dev, void __iomem *base)
|
1690 |
|
|
{
|
1691 |
|
|
void __iomem *mac_base;
|
1692 |
|
|
int i;
|
1693 |
|
|
|
1694 |
|
|
mac_base = base+EPROM_SIZE-sizeof(struct midway_eprom);
|
1695 |
|
|
for (i = 0; i < ESI_LEN; i++) dev->esi[i] = readb(mac_base+(i^3));
|
1696 |
|
|
return 0;
|
1697 |
|
|
}
|
1698 |
|
|
|
1699 |
|
|
|
1700 |
|
|
static int __devinit eni_do_init(struct atm_dev *dev)
|
1701 |
|
|
{
|
1702 |
|
|
struct midway_eprom __iomem *eprom;
|
1703 |
|
|
struct eni_dev *eni_dev;
|
1704 |
|
|
struct pci_dev *pci_dev;
|
1705 |
|
|
unsigned long real_base;
|
1706 |
|
|
void __iomem *base;
|
1707 |
|
|
int error,i,last;
|
1708 |
|
|
|
1709 |
|
|
DPRINTK(">eni_init\n");
|
1710 |
|
|
dev->ci_range.vpi_bits = 0;
|
1711 |
|
|
dev->ci_range.vci_bits = NR_VCI_LD;
|
1712 |
|
|
dev->link_rate = ATM_OC3_PCR;
|
1713 |
|
|
eni_dev = ENI_DEV(dev);
|
1714 |
|
|
pci_dev = eni_dev->pci_dev;
|
1715 |
|
|
real_base = pci_resource_start(pci_dev, 0);
|
1716 |
|
|
eni_dev->irq = pci_dev->irq;
|
1717 |
|
|
if ((error = pci_write_config_word(pci_dev,PCI_COMMAND,
|
1718 |
|
|
PCI_COMMAND_MEMORY |
|
1719 |
|
|
(eni_dev->asic ? PCI_COMMAND_PARITY | PCI_COMMAND_SERR : 0)))) {
|
1720 |
|
|
printk(KERN_ERR DEV_LABEL "(itf %d): can't enable memory "
|
1721 |
|
|
"(0x%02x)\n",dev->number,error);
|
1722 |
|
|
return -EIO;
|
1723 |
|
|
}
|
1724 |
|
|
printk(KERN_NOTICE DEV_LABEL "(itf %d): rev.%d,base=0x%lx,irq=%d,",
|
1725 |
|
|
dev->number,pci_dev->revision,real_base,eni_dev->irq);
|
1726 |
|
|
if (!(base = ioremap_nocache(real_base,MAP_MAX_SIZE))) {
|
1727 |
|
|
printk("\n");
|
1728 |
|
|
printk(KERN_ERR DEV_LABEL "(itf %d): can't set up page "
|
1729 |
|
|
"mapping\n",dev->number);
|
1730 |
|
|
return error;
|
1731 |
|
|
}
|
1732 |
|
|
eni_dev->base_diff = real_base - (unsigned long) base;
|
1733 |
|
|
/* id may not be present in ASIC Tonga boards - check this @@@ */
|
1734 |
|
|
if (!eni_dev->asic) {
|
1735 |
|
|
eprom = (base+EPROM_SIZE-sizeof(struct midway_eprom));
|
1736 |
|
|
if (readl(&eprom->magic) != ENI155_MAGIC) {
|
1737 |
|
|
printk("\n");
|
1738 |
|
|
printk(KERN_ERR KERN_ERR DEV_LABEL "(itf %d): bad "
|
1739 |
|
|
"magic - expected 0x%x, got 0x%x\n",dev->number,
|
1740 |
|
|
ENI155_MAGIC,(unsigned) readl(&eprom->magic));
|
1741 |
|
|
error = -EINVAL;
|
1742 |
|
|
goto unmap;
|
1743 |
|
|
}
|
1744 |
|
|
}
|
1745 |
|
|
eni_dev->phy = base+PHY_BASE;
|
1746 |
|
|
eni_dev->reg = base+REG_BASE;
|
1747 |
|
|
eni_dev->ram = base+RAM_BASE;
|
1748 |
|
|
last = MAP_MAX_SIZE-RAM_BASE;
|
1749 |
|
|
for (i = last-RAM_INCREMENT; i >= 0; i -= RAM_INCREMENT) {
|
1750 |
|
|
writel(0x55555555,eni_dev->ram+i);
|
1751 |
|
|
if (readl(eni_dev->ram+i) != 0x55555555) last = i;
|
1752 |
|
|
else {
|
1753 |
|
|
writel(0xAAAAAAAA,eni_dev->ram+i);
|
1754 |
|
|
if (readl(eni_dev->ram+i) != 0xAAAAAAAA) last = i;
|
1755 |
|
|
else writel(i,eni_dev->ram+i);
|
1756 |
|
|
}
|
1757 |
|
|
}
|
1758 |
|
|
for (i = 0; i < last; i += RAM_INCREMENT)
|
1759 |
|
|
if (readl(eni_dev->ram+i) != i) break;
|
1760 |
|
|
eni_dev->mem = i;
|
1761 |
|
|
memset_io(eni_dev->ram,0,eni_dev->mem);
|
1762 |
|
|
/* TODO: should shrink allocation now */
|
1763 |
|
|
printk("mem=%dkB (",eni_dev->mem >> 10);
|
1764 |
|
|
/* TODO: check for non-SUNI, check for TAXI ? */
|
1765 |
|
|
if (!(eni_in(MID_RES_ID_MCON) & 0x200) != !eni_dev->asic) {
|
1766 |
|
|
printk(")\n");
|
1767 |
|
|
printk(KERN_ERR DEV_LABEL "(itf %d): ERROR - wrong id 0x%x\n",
|
1768 |
|
|
dev->number,(unsigned) eni_in(MID_RES_ID_MCON));
|
1769 |
|
|
error = -EINVAL;
|
1770 |
|
|
goto unmap;
|
1771 |
|
|
}
|
1772 |
|
|
error = eni_dev->asic ? get_esi_asic(dev) : get_esi_fpga(dev,base);
|
1773 |
|
|
if (error)
|
1774 |
|
|
goto unmap;
|
1775 |
|
|
for (i = 0; i < ESI_LEN; i++)
|
1776 |
|
|
printk("%s%02X",i ? "-" : "",dev->esi[i]);
|
1777 |
|
|
printk(")\n");
|
1778 |
|
|
printk(KERN_NOTICE DEV_LABEL "(itf %d): %s,%s\n",dev->number,
|
1779 |
|
|
eni_in(MID_RES_ID_MCON) & 0x200 ? "ASIC" : "FPGA",
|
1780 |
|
|
media_name[eni_in(MID_RES_ID_MCON) & DAUGTHER_ID]);
|
1781 |
|
|
|
1782 |
|
|
error = suni_init(dev);
|
1783 |
|
|
if (error)
|
1784 |
|
|
goto unmap;
|
1785 |
|
|
out:
|
1786 |
|
|
return error;
|
1787 |
|
|
unmap:
|
1788 |
|
|
iounmap(base);
|
1789 |
|
|
goto out;
|
1790 |
|
|
}
|
1791 |
|
|
|
1792 |
|
|
|
1793 |
|
|
static int __devinit eni_start(struct atm_dev *dev)
|
1794 |
|
|
{
|
1795 |
|
|
struct eni_dev *eni_dev;
|
1796 |
|
|
|
1797 |
|
|
void __iomem *buf;
|
1798 |
|
|
unsigned long buffer_mem;
|
1799 |
|
|
int error;
|
1800 |
|
|
|
1801 |
|
|
DPRINTK(">eni_start\n");
|
1802 |
|
|
eni_dev = ENI_DEV(dev);
|
1803 |
|
|
if (request_irq(eni_dev->irq,&eni_int,IRQF_SHARED,DEV_LABEL,dev)) {
|
1804 |
|
|
printk(KERN_ERR DEV_LABEL "(itf %d): IRQ%d is already in use\n",
|
1805 |
|
|
dev->number,eni_dev->irq);
|
1806 |
|
|
error = -EAGAIN;
|
1807 |
|
|
goto out;
|
1808 |
|
|
}
|
1809 |
|
|
pci_set_master(eni_dev->pci_dev);
|
1810 |
|
|
if ((error = pci_write_config_word(eni_dev->pci_dev,PCI_COMMAND,
|
1811 |
|
|
PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
|
1812 |
|
|
(eni_dev->asic ? PCI_COMMAND_PARITY | PCI_COMMAND_SERR : 0)))) {
|
1813 |
|
|
printk(KERN_ERR DEV_LABEL "(itf %d): can't enable memory+"
|
1814 |
|
|
"master (0x%02x)\n",dev->number,error);
|
1815 |
|
|
goto free_irq;
|
1816 |
|
|
}
|
1817 |
|
|
if ((error = pci_write_config_byte(eni_dev->pci_dev,PCI_TONGA_CTRL,
|
1818 |
|
|
END_SWAP_DMA))) {
|
1819 |
|
|
printk(KERN_ERR DEV_LABEL "(itf %d): can't set endian swap "
|
1820 |
|
|
"(0x%02x)\n",dev->number,error);
|
1821 |
|
|
goto free_irq;
|
1822 |
|
|
}
|
1823 |
|
|
/* determine addresses of internal tables */
|
1824 |
|
|
eni_dev->vci = eni_dev->ram;
|
1825 |
|
|
eni_dev->rx_dma = eni_dev->ram+NR_VCI*16;
|
1826 |
|
|
eni_dev->tx_dma = eni_dev->rx_dma+NR_DMA_RX*8;
|
1827 |
|
|
eni_dev->service = eni_dev->tx_dma+NR_DMA_TX*8;
|
1828 |
|
|
buf = eni_dev->service+NR_SERVICE*4;
|
1829 |
|
|
DPRINTK("vci 0x%lx,rx 0x%lx, tx 0x%lx,srv 0x%lx,buf 0x%lx\n",
|
1830 |
|
|
eni_dev->vci,eni_dev->rx_dma,eni_dev->tx_dma,
|
1831 |
|
|
eni_dev->service,buf);
|
1832 |
|
|
spin_lock_init(&eni_dev->lock);
|
1833 |
|
|
tasklet_init(&eni_dev->task,eni_tasklet,(unsigned long) dev);
|
1834 |
|
|
eni_dev->events = 0;
|
1835 |
|
|
/* initialize memory management */
|
1836 |
|
|
buffer_mem = eni_dev->mem - (buf - eni_dev->ram);
|
1837 |
|
|
eni_dev->free_list_size = buffer_mem/MID_MIN_BUF_SIZE/2;
|
1838 |
|
|
eni_dev->free_list = kmalloc(
|
1839 |
|
|
sizeof(struct eni_free)*(eni_dev->free_list_size+1),GFP_KERNEL);
|
1840 |
|
|
if (!eni_dev->free_list) {
|
1841 |
|
|
printk(KERN_ERR DEV_LABEL "(itf %d): couldn't get free page\n",
|
1842 |
|
|
dev->number);
|
1843 |
|
|
error = -ENOMEM;
|
1844 |
|
|
goto free_irq;
|
1845 |
|
|
}
|
1846 |
|
|
eni_dev->free_len = 0;
|
1847 |
|
|
eni_put_free(eni_dev,buf,buffer_mem);
|
1848 |
|
|
memset_io(eni_dev->vci,0,16*NR_VCI); /* clear VCI table */
|
1849 |
|
|
/*
|
1850 |
|
|
* byte_addr free (k)
|
1851 |
|
|
* 0x00000000 512 VCI table
|
1852 |
|
|
* 0x00004000 496 RX DMA
|
1853 |
|
|
* 0x00005000 492 TX DMA
|
1854 |
|
|
* 0x00006000 488 service list
|
1855 |
|
|
* 0x00007000 484 buffers
|
1856 |
|
|
* 0x00080000 0 end (512kB)
|
1857 |
|
|
*/
|
1858 |
|
|
eni_out(0xffffffff,MID_IE);
|
1859 |
|
|
error = start_tx(dev);
|
1860 |
|
|
if (error) goto free_list;
|
1861 |
|
|
error = start_rx(dev);
|
1862 |
|
|
if (error) goto free_list;
|
1863 |
|
|
error = dev->phy->start(dev);
|
1864 |
|
|
if (error) goto free_list;
|
1865 |
|
|
eni_out(eni_in(MID_MC_S) | (1 << MID_INT_SEL_SHIFT) |
|
1866 |
|
|
MID_TX_LOCK_MODE | MID_DMA_ENABLE | MID_TX_ENABLE | MID_RX_ENABLE,
|
1867 |
|
|
MID_MC_S);
|
1868 |
|
|
/* Tonga uses SBus INTReq1 */
|
1869 |
|
|
(void) eni_in(MID_ISA); /* clear Midway interrupts */
|
1870 |
|
|
return 0;
|
1871 |
|
|
|
1872 |
|
|
free_list:
|
1873 |
|
|
kfree(eni_dev->free_list);
|
1874 |
|
|
|
1875 |
|
|
free_irq:
|
1876 |
|
|
free_irq(eni_dev->irq, eni_dev);
|
1877 |
|
|
|
1878 |
|
|
out:
|
1879 |
|
|
return error;
|
1880 |
|
|
}
|
1881 |
|
|
|
1882 |
|
|
|
1883 |
|
|
static void eni_close(struct atm_vcc *vcc)
|
1884 |
|
|
{
|
1885 |
|
|
DPRINTK(">eni_close\n");
|
1886 |
|
|
if (!ENI_VCC(vcc)) return;
|
1887 |
|
|
clear_bit(ATM_VF_READY,&vcc->flags);
|
1888 |
|
|
close_rx(vcc);
|
1889 |
|
|
close_tx(vcc);
|
1890 |
|
|
DPRINTK("eni_close: done waiting\n");
|
1891 |
|
|
/* deallocate memory */
|
1892 |
|
|
kfree(ENI_VCC(vcc));
|
1893 |
|
|
vcc->dev_data = NULL;
|
1894 |
|
|
clear_bit(ATM_VF_ADDR,&vcc->flags);
|
1895 |
|
|
/*foo();*/
|
1896 |
|
|
}
|
1897 |
|
|
|
1898 |
|
|
|
1899 |
|
|
static int eni_open(struct atm_vcc *vcc)
|
1900 |
|
|
{
|
1901 |
|
|
struct eni_dev *eni_dev;
|
1902 |
|
|
struct eni_vcc *eni_vcc;
|
1903 |
|
|
int error;
|
1904 |
|
|
short vpi = vcc->vpi;
|
1905 |
|
|
int vci = vcc->vci;
|
1906 |
|
|
|
1907 |
|
|
DPRINTK(">eni_open\n");
|
1908 |
|
|
EVENT("eni_open\n",0,0);
|
1909 |
|
|
if (!test_bit(ATM_VF_PARTIAL,&vcc->flags))
|
1910 |
|
|
vcc->dev_data = NULL;
|
1911 |
|
|
eni_dev = ENI_DEV(vcc->dev);
|
1912 |
|
|
if (vci != ATM_VPI_UNSPEC && vpi != ATM_VCI_UNSPEC)
|
1913 |
|
|
set_bit(ATM_VF_ADDR,&vcc->flags);
|
1914 |
|
|
if (vcc->qos.aal != ATM_AAL0 && vcc->qos.aal != ATM_AAL5)
|
1915 |
|
|
return -EINVAL;
|
1916 |
|
|
DPRINTK(DEV_LABEL "(itf %d): open %d.%d\n",vcc->dev->number,vcc->vpi,
|
1917 |
|
|
vcc->vci);
|
1918 |
|
|
if (!test_bit(ATM_VF_PARTIAL,&vcc->flags)) {
|
1919 |
|
|
eni_vcc = kmalloc(sizeof(struct eni_vcc),GFP_KERNEL);
|
1920 |
|
|
if (!eni_vcc) return -ENOMEM;
|
1921 |
|
|
vcc->dev_data = eni_vcc;
|
1922 |
|
|
eni_vcc->tx = NULL; /* for eni_close after open_rx */
|
1923 |
|
|
if ((error = open_rx_first(vcc))) {
|
1924 |
|
|
eni_close(vcc);
|
1925 |
|
|
return error;
|
1926 |
|
|
}
|
1927 |
|
|
if ((error = open_tx_first(vcc))) {
|
1928 |
|
|
eni_close(vcc);
|
1929 |
|
|
return error;
|
1930 |
|
|
}
|
1931 |
|
|
}
|
1932 |
|
|
if (vci == ATM_VPI_UNSPEC || vpi == ATM_VCI_UNSPEC) return 0;
|
1933 |
|
|
if ((error = open_rx_second(vcc))) {
|
1934 |
|
|
eni_close(vcc);
|
1935 |
|
|
return error;
|
1936 |
|
|
}
|
1937 |
|
|
if ((error = open_tx_second(vcc))) {
|
1938 |
|
|
eni_close(vcc);
|
1939 |
|
|
return error;
|
1940 |
|
|
}
|
1941 |
|
|
set_bit(ATM_VF_READY,&vcc->flags);
|
1942 |
|
|
/* should power down SUNI while !ref_count @@@ */
|
1943 |
|
|
return 0;
|
1944 |
|
|
}
|
1945 |
|
|
|
1946 |
|
|
|
1947 |
|
|
static int eni_change_qos(struct atm_vcc *vcc,struct atm_qos *qos,int flgs)
|
1948 |
|
|
{
|
1949 |
|
|
struct eni_dev *eni_dev = ENI_DEV(vcc->dev);
|
1950 |
|
|
struct eni_tx *tx = ENI_VCC(vcc)->tx;
|
1951 |
|
|
struct sk_buff *skb;
|
1952 |
|
|
int error,rate,rsv,shp;
|
1953 |
|
|
|
1954 |
|
|
if (qos->txtp.traffic_class == ATM_NONE) return 0;
|
1955 |
|
|
if (tx == eni_dev->ubr) return -EBADFD;
|
1956 |
|
|
rate = atm_pcr_goal(&qos->txtp);
|
1957 |
|
|
if (rate < 0) rate = -rate;
|
1958 |
|
|
rsv = shp = 0;
|
1959 |
|
|
if ((flgs & ATM_MF_DEC_RSV) && rate && rate < tx->reserved) rsv = 1;
|
1960 |
|
|
if ((flgs & ATM_MF_INC_RSV) && (!rate || rate > tx->reserved)) rsv = 1;
|
1961 |
|
|
if ((flgs & ATM_MF_DEC_SHP) && rate && rate < tx->shaping) shp = 1;
|
1962 |
|
|
if ((flgs & ATM_MF_INC_SHP) && (!rate || rate > tx->shaping)) shp = 1;
|
1963 |
|
|
if (!rsv && !shp) return 0;
|
1964 |
|
|
error = reserve_or_set_tx(vcc,&qos->txtp,rsv,shp);
|
1965 |
|
|
if (error) return error;
|
1966 |
|
|
if (shp && !(flgs & ATM_MF_IMMED)) return 0;
|
1967 |
|
|
/*
|
1968 |
|
|
* Walk through the send buffer and patch the rate information in all
|
1969 |
|
|
* segmentation buffer descriptors of this VCC.
|
1970 |
|
|
*/
|
1971 |
|
|
tasklet_disable(&eni_dev->task);
|
1972 |
|
|
skb_queue_walk(&eni_dev->tx_queue, skb) {
|
1973 |
|
|
void __iomem *dsc;
|
1974 |
|
|
|
1975 |
|
|
if (ATM_SKB(skb)->vcc != vcc) continue;
|
1976 |
|
|
dsc = tx->send+ENI_PRV_POS(skb)*4;
|
1977 |
|
|
writel((readl(dsc) & ~(MID_SEG_RATE | MID_SEG_PR)) |
|
1978 |
|
|
(tx->prescaler << MID_SEG_PR_SHIFT) |
|
1979 |
|
|
(tx->resolution << MID_SEG_RATE_SHIFT), dsc);
|
1980 |
|
|
}
|
1981 |
|
|
tasklet_enable(&eni_dev->task);
|
1982 |
|
|
return 0;
|
1983 |
|
|
}
|
1984 |
|
|
|
1985 |
|
|
|
1986 |
|
|
static int eni_ioctl(struct atm_dev *dev,unsigned int cmd,void __user *arg)
|
1987 |
|
|
{
|
1988 |
|
|
struct eni_dev *eni_dev = ENI_DEV(dev);
|
1989 |
|
|
|
1990 |
|
|
if (cmd == ENI_MEMDUMP) {
|
1991 |
|
|
if (!capable(CAP_NET_ADMIN)) return -EPERM;
|
1992 |
|
|
printk(KERN_WARNING "Please use /proc/atm/" DEV_LABEL ":%d "
|
1993 |
|
|
"instead of obsolete ioctl ENI_MEMDUMP\n",dev->number);
|
1994 |
|
|
dump(dev);
|
1995 |
|
|
return 0;
|
1996 |
|
|
}
|
1997 |
|
|
if (cmd == ENI_SETMULT) {
|
1998 |
|
|
struct eni_multipliers mult;
|
1999 |
|
|
|
2000 |
|
|
if (!capable(CAP_NET_ADMIN)) return -EPERM;
|
2001 |
|
|
if (copy_from_user(&mult, arg,
|
2002 |
|
|
sizeof(struct eni_multipliers)))
|
2003 |
|
|
return -EFAULT;
|
2004 |
|
|
if ((mult.tx && mult.tx <= 100) || (mult.rx &&mult.rx <= 100) ||
|
2005 |
|
|
mult.tx > 65536 || mult.rx > 65536)
|
2006 |
|
|
return -EINVAL;
|
2007 |
|
|
if (mult.tx) eni_dev->tx_mult = mult.tx;
|
2008 |
|
|
if (mult.rx) eni_dev->rx_mult = mult.rx;
|
2009 |
|
|
return 0;
|
2010 |
|
|
}
|
2011 |
|
|
if (cmd == ATM_SETCIRANGE) {
|
2012 |
|
|
struct atm_cirange ci;
|
2013 |
|
|
|
2014 |
|
|
if (copy_from_user(&ci, arg,sizeof(struct atm_cirange)))
|
2015 |
|
|
return -EFAULT;
|
2016 |
|
|
if ((ci.vpi_bits == 0 || ci.vpi_bits == ATM_CI_MAX) &&
|
2017 |
|
|
(ci.vci_bits == NR_VCI_LD || ci.vpi_bits == ATM_CI_MAX))
|
2018 |
|
|
return 0;
|
2019 |
|
|
return -EINVAL;
|
2020 |
|
|
}
|
2021 |
|
|
if (!dev->phy->ioctl) return -ENOIOCTLCMD;
|
2022 |
|
|
return dev->phy->ioctl(dev,cmd,arg);
|
2023 |
|
|
}
|
2024 |
|
|
|
2025 |
|
|
|
2026 |
|
|
static int eni_getsockopt(struct atm_vcc *vcc,int level,int optname,
|
2027 |
|
|
void __user *optval,int optlen)
|
2028 |
|
|
{
|
2029 |
|
|
return -EINVAL;
|
2030 |
|
|
}
|
2031 |
|
|
|
2032 |
|
|
|
2033 |
|
|
static int eni_setsockopt(struct atm_vcc *vcc,int level,int optname,
|
2034 |
|
|
void __user *optval,int optlen)
|
2035 |
|
|
{
|
2036 |
|
|
return -EINVAL;
|
2037 |
|
|
}
|
2038 |
|
|
|
2039 |
|
|
|
2040 |
|
|
static int eni_send(struct atm_vcc *vcc,struct sk_buff *skb)
|
2041 |
|
|
{
|
2042 |
|
|
enum enq_res res;
|
2043 |
|
|
|
2044 |
|
|
DPRINTK(">eni_send\n");
|
2045 |
|
|
if (!ENI_VCC(vcc)->tx) {
|
2046 |
|
|
if (vcc->pop) vcc->pop(vcc,skb);
|
2047 |
|
|
else dev_kfree_skb(skb);
|
2048 |
|
|
return -EINVAL;
|
2049 |
|
|
}
|
2050 |
|
|
if (!skb) {
|
2051 |
|
|
printk(KERN_CRIT "!skb in eni_send ?\n");
|
2052 |
|
|
if (vcc->pop) vcc->pop(vcc,skb);
|
2053 |
|
|
return -EINVAL;
|
2054 |
|
|
}
|
2055 |
|
|
if (vcc->qos.aal == ATM_AAL0) {
|
2056 |
|
|
if (skb->len != ATM_CELL_SIZE-1) {
|
2057 |
|
|
if (vcc->pop) vcc->pop(vcc,skb);
|
2058 |
|
|
else dev_kfree_skb(skb);
|
2059 |
|
|
return -EINVAL;
|
2060 |
|
|
}
|
2061 |
|
|
*(u32 *) skb->data = htonl(*(u32 *) skb->data);
|
2062 |
|
|
}
|
2063 |
|
|
submitted++;
|
2064 |
|
|
ATM_SKB(skb)->vcc = vcc;
|
2065 |
|
|
tasklet_disable(&ENI_DEV(vcc->dev)->task);
|
2066 |
|
|
res = do_tx(skb);
|
2067 |
|
|
tasklet_enable(&ENI_DEV(vcc->dev)->task);
|
2068 |
|
|
if (res == enq_ok) return 0;
|
2069 |
|
|
skb_queue_tail(&ENI_VCC(vcc)->tx->backlog,skb);
|
2070 |
|
|
backlogged++;
|
2071 |
|
|
tasklet_schedule(&ENI_DEV(vcc->dev)->task);
|
2072 |
|
|
return 0;
|
2073 |
|
|
}
|
2074 |
|
|
|
2075 |
|
|
static void eni_phy_put(struct atm_dev *dev,unsigned char value,
|
2076 |
|
|
unsigned long addr)
|
2077 |
|
|
{
|
2078 |
|
|
writel(value,ENI_DEV(dev)->phy+addr*4);
|
2079 |
|
|
}
|
2080 |
|
|
|
2081 |
|
|
|
2082 |
|
|
|
2083 |
|
|
static unsigned char eni_phy_get(struct atm_dev *dev,unsigned long addr)
|
2084 |
|
|
{
|
2085 |
|
|
return readl(ENI_DEV(dev)->phy+addr*4);
|
2086 |
|
|
}
|
2087 |
|
|
|
2088 |
|
|
|
2089 |
|
|
static int eni_proc_read(struct atm_dev *dev,loff_t *pos,char *page)
|
2090 |
|
|
{
|
2091 |
|
|
struct hlist_node *node;
|
2092 |
|
|
struct sock *s;
|
2093 |
|
|
static const char *signal[] = { "LOST","unknown","okay" };
|
2094 |
|
|
struct eni_dev *eni_dev = ENI_DEV(dev);
|
2095 |
|
|
struct atm_vcc *vcc;
|
2096 |
|
|
int left,i;
|
2097 |
|
|
|
2098 |
|
|
left = *pos;
|
2099 |
|
|
if (!left)
|
2100 |
|
|
return sprintf(page,DEV_LABEL "(itf %d) signal %s, %dkB, "
|
2101 |
|
|
"%d cps remaining\n",dev->number,signal[(int) dev->signal],
|
2102 |
|
|
eni_dev->mem >> 10,eni_dev->tx_bw);
|
2103 |
|
|
if (!--left)
|
2104 |
|
|
return sprintf(page,"%4sBursts: TX"
|
2105 |
|
|
#if !defined(CONFIG_ATM_ENI_BURST_TX_16W) && \
|
2106 |
|
|
!defined(CONFIG_ATM_ENI_BURST_TX_8W) && \
|
2107 |
|
|
!defined(CONFIG_ATM_ENI_BURST_TX_4W) && \
|
2108 |
|
|
!defined(CONFIG_ATM_ENI_BURST_TX_2W)
|
2109 |
|
|
" none"
|
2110 |
|
|
#endif
|
2111 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_TX_16W
|
2112 |
|
|
" 16W"
|
2113 |
|
|
#endif
|
2114 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_TX_8W
|
2115 |
|
|
" 8W"
|
2116 |
|
|
#endif
|
2117 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_TX_4W
|
2118 |
|
|
" 4W"
|
2119 |
|
|
#endif
|
2120 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_TX_2W
|
2121 |
|
|
" 2W"
|
2122 |
|
|
#endif
|
2123 |
|
|
", RX"
|
2124 |
|
|
#if !defined(CONFIG_ATM_ENI_BURST_RX_16W) && \
|
2125 |
|
|
!defined(CONFIG_ATM_ENI_BURST_RX_8W) && \
|
2126 |
|
|
!defined(CONFIG_ATM_ENI_BURST_RX_4W) && \
|
2127 |
|
|
!defined(CONFIG_ATM_ENI_BURST_RX_2W)
|
2128 |
|
|
" none"
|
2129 |
|
|
#endif
|
2130 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_RX_16W
|
2131 |
|
|
" 16W"
|
2132 |
|
|
#endif
|
2133 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_RX_8W
|
2134 |
|
|
" 8W"
|
2135 |
|
|
#endif
|
2136 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_RX_4W
|
2137 |
|
|
" 4W"
|
2138 |
|
|
#endif
|
2139 |
|
|
#ifdef CONFIG_ATM_ENI_BURST_RX_2W
|
2140 |
|
|
" 2W"
|
2141 |
|
|
#endif
|
2142 |
|
|
#ifndef CONFIG_ATM_ENI_TUNE_BURST
|
2143 |
|
|
" (default)"
|
2144 |
|
|
#endif
|
2145 |
|
|
"\n","");
|
2146 |
|
|
if (!--left)
|
2147 |
|
|
return sprintf(page,"%4sBuffer multipliers: tx %d%%, rx %d%%\n",
|
2148 |
|
|
"",eni_dev->tx_mult,eni_dev->rx_mult);
|
2149 |
|
|
for (i = 0; i < NR_CHAN; i++) {
|
2150 |
|
|
struct eni_tx *tx = eni_dev->tx+i;
|
2151 |
|
|
|
2152 |
|
|
if (!tx->send) continue;
|
2153 |
|
|
if (!--left) {
|
2154 |
|
|
return sprintf(page,"tx[%d]: 0x%ld-0x%ld "
|
2155 |
|
|
"(%6ld bytes), rsv %d cps, shp %d cps%s\n",i,
|
2156 |
|
|
(unsigned long) (tx->send - eni_dev->ram),
|
2157 |
|
|
tx->send-eni_dev->ram+tx->words*4-1,tx->words*4,
|
2158 |
|
|
tx->reserved,tx->shaping,
|
2159 |
|
|
tx == eni_dev->ubr ? " (UBR)" : "");
|
2160 |
|
|
}
|
2161 |
|
|
if (--left) continue;
|
2162 |
|
|
return sprintf(page,"%10sbacklog %u packets\n","",
|
2163 |
|
|
skb_queue_len(&tx->backlog));
|
2164 |
|
|
}
|
2165 |
|
|
read_lock(&vcc_sklist_lock);
|
2166 |
|
|
for(i = 0; i < VCC_HTABLE_SIZE; ++i) {
|
2167 |
|
|
struct hlist_head *head = &vcc_hash[i];
|
2168 |
|
|
|
2169 |
|
|
sk_for_each(s, node, head) {
|
2170 |
|
|
struct eni_vcc *eni_vcc;
|
2171 |
|
|
int length;
|
2172 |
|
|
|
2173 |
|
|
vcc = atm_sk(s);
|
2174 |
|
|
if (vcc->dev != dev)
|
2175 |
|
|
continue;
|
2176 |
|
|
eni_vcc = ENI_VCC(vcc);
|
2177 |
|
|
if (--left) continue;
|
2178 |
|
|
length = sprintf(page,"vcc %4d: ",vcc->vci);
|
2179 |
|
|
if (eni_vcc->rx) {
|
2180 |
|
|
length += sprintf(page+length,"0x%ld-0x%ld "
|
2181 |
|
|
"(%6ld bytes)",
|
2182 |
|
|
(unsigned long) (eni_vcc->recv - eni_dev->ram),
|
2183 |
|
|
eni_vcc->recv-eni_dev->ram+eni_vcc->words*4-1,
|
2184 |
|
|
eni_vcc->words*4);
|
2185 |
|
|
if (eni_vcc->tx) length += sprintf(page+length,", ");
|
2186 |
|
|
}
|
2187 |
|
|
if (eni_vcc->tx)
|
2188 |
|
|
length += sprintf(page+length,"tx[%d], txing %d bytes",
|
2189 |
|
|
eni_vcc->tx->index,eni_vcc->txing);
|
2190 |
|
|
page[length] = '\n';
|
2191 |
|
|
read_unlock(&vcc_sklist_lock);
|
2192 |
|
|
return length+1;
|
2193 |
|
|
}
|
2194 |
|
|
}
|
2195 |
|
|
read_unlock(&vcc_sklist_lock);
|
2196 |
|
|
for (i = 0; i < eni_dev->free_len; i++) {
|
2197 |
|
|
struct eni_free *fe = eni_dev->free_list+i;
|
2198 |
|
|
unsigned long offset;
|
2199 |
|
|
|
2200 |
|
|
if (--left) continue;
|
2201 |
|
|
offset = (unsigned long) eni_dev->ram+eni_dev->base_diff;
|
2202 |
|
|
return sprintf(page,"free %p-%p (%6d bytes)\n",
|
2203 |
|
|
fe->start-offset,fe->start-offset+(1 << fe->order)-1,
|
2204 |
|
|
1 << fe->order);
|
2205 |
|
|
}
|
2206 |
|
|
return 0;
|
2207 |
|
|
}
|
2208 |
|
|
|
2209 |
|
|
|
2210 |
|
|
static const struct atmdev_ops ops = {
|
2211 |
|
|
.open = eni_open,
|
2212 |
|
|
.close = eni_close,
|
2213 |
|
|
.ioctl = eni_ioctl,
|
2214 |
|
|
.getsockopt = eni_getsockopt,
|
2215 |
|
|
.setsockopt = eni_setsockopt,
|
2216 |
|
|
.send = eni_send,
|
2217 |
|
|
.phy_put = eni_phy_put,
|
2218 |
|
|
.phy_get = eni_phy_get,
|
2219 |
|
|
.change_qos = eni_change_qos,
|
2220 |
|
|
.proc_read = eni_proc_read
|
2221 |
|
|
};
|
2222 |
|
|
|
2223 |
|
|
|
2224 |
|
|
static int __devinit eni_init_one(struct pci_dev *pci_dev,
|
2225 |
|
|
const struct pci_device_id *ent)
|
2226 |
|
|
{
|
2227 |
|
|
struct atm_dev *dev;
|
2228 |
|
|
struct eni_dev *eni_dev;
|
2229 |
|
|
int error = -ENOMEM;
|
2230 |
|
|
|
2231 |
|
|
DPRINTK("eni_init_one\n");
|
2232 |
|
|
|
2233 |
|
|
if (pci_enable_device(pci_dev)) {
|
2234 |
|
|
error = -EIO;
|
2235 |
|
|
goto out0;
|
2236 |
|
|
}
|
2237 |
|
|
|
2238 |
|
|
eni_dev = kmalloc(sizeof(struct eni_dev),GFP_KERNEL);
|
2239 |
|
|
if (!eni_dev) goto out0;
|
2240 |
|
|
if (!cpu_zeroes) {
|
2241 |
|
|
cpu_zeroes = pci_alloc_consistent(pci_dev,ENI_ZEROES_SIZE,
|
2242 |
|
|
&zeroes);
|
2243 |
|
|
if (!cpu_zeroes) goto out1;
|
2244 |
|
|
}
|
2245 |
|
|
dev = atm_dev_register(DEV_LABEL,&ops,-1,NULL);
|
2246 |
|
|
if (!dev) goto out2;
|
2247 |
|
|
pci_set_drvdata(pci_dev, dev);
|
2248 |
|
|
eni_dev->pci_dev = pci_dev;
|
2249 |
|
|
dev->dev_data = eni_dev;
|
2250 |
|
|
eni_dev->asic = ent->driver_data;
|
2251 |
|
|
error = eni_do_init(dev);
|
2252 |
|
|
if (error) goto out3;
|
2253 |
|
|
error = eni_start(dev);
|
2254 |
|
|
if (error) goto out3;
|
2255 |
|
|
eni_dev->more = eni_boards;
|
2256 |
|
|
eni_boards = dev;
|
2257 |
|
|
return 0;
|
2258 |
|
|
out3:
|
2259 |
|
|
atm_dev_deregister(dev);
|
2260 |
|
|
out2:
|
2261 |
|
|
pci_free_consistent(eni_dev->pci_dev,ENI_ZEROES_SIZE,cpu_zeroes,zeroes);
|
2262 |
|
|
cpu_zeroes = NULL;
|
2263 |
|
|
out1:
|
2264 |
|
|
kfree(eni_dev);
|
2265 |
|
|
out0:
|
2266 |
|
|
return error;
|
2267 |
|
|
}
|
2268 |
|
|
|
2269 |
|
|
|
2270 |
|
|
static struct pci_device_id eni_pci_tbl[] = {
|
2271 |
|
|
{ PCI_VENDOR_ID_EF, PCI_DEVICE_ID_EF_ATM_FPGA, PCI_ANY_ID, PCI_ANY_ID,
|
2272 |
|
|
0, 0, 0 /* FPGA */ },
|
2273 |
|
|
{ PCI_VENDOR_ID_EF, PCI_DEVICE_ID_EF_ATM_ASIC, PCI_ANY_ID, PCI_ANY_ID,
|
2274 |
|
|
0, 0, 1 /* ASIC */ },
|
2275 |
|
|
{ 0, }
|
2276 |
|
|
};
|
2277 |
|
|
MODULE_DEVICE_TABLE(pci,eni_pci_tbl);
|
2278 |
|
|
|
2279 |
|
|
|
2280 |
|
|
static void __devexit eni_remove_one(struct pci_dev *pci_dev)
|
2281 |
|
|
{
|
2282 |
|
|
/* grrr */
|
2283 |
|
|
}
|
2284 |
|
|
|
2285 |
|
|
|
2286 |
|
|
static struct pci_driver eni_driver = {
|
2287 |
|
|
.name = DEV_LABEL,
|
2288 |
|
|
.id_table = eni_pci_tbl,
|
2289 |
|
|
.probe = eni_init_one,
|
2290 |
|
|
.remove = __devexit_p(eni_remove_one),
|
2291 |
|
|
};
|
2292 |
|
|
|
2293 |
|
|
|
2294 |
|
|
static int __init eni_init(void)
|
2295 |
|
|
{
|
2296 |
|
|
struct sk_buff *skb; /* dummy for sizeof */
|
2297 |
|
|
|
2298 |
|
|
if (sizeof(skb->cb) < sizeof(struct eni_skb_prv)) {
|
2299 |
|
|
printk(KERN_ERR "eni_detect: skb->cb is too small (%Zd < %Zd)\n",
|
2300 |
|
|
sizeof(skb->cb),sizeof(struct eni_skb_prv));
|
2301 |
|
|
return -EIO;
|
2302 |
|
|
}
|
2303 |
|
|
return pci_register_driver(&eni_driver);
|
2304 |
|
|
}
|
2305 |
|
|
|
2306 |
|
|
|
2307 |
|
|
module_init(eni_init);
|
2308 |
|
|
/* @@@ since exit routine not defined, this module can not be unloaded */
|
2309 |
|
|
|
2310 |
|
|
MODULE_LICENSE("GPL");
|