1 /**************************************************************************
2
3 Copyright (c) 2007-2008, Chelsio Inc.
4 All rights reserved.
5
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
8
9 1. Redistributions of source code must retain the above copyright notice,
10 this list of conditions and the following disclaimer.
11
12 2. Neither the name of the Chelsio Corporation nor the names of its
13 contributors may be used to endorse or promote products derived from
14 this software without specific prior written permission.
15
16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
20 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 POSSIBILITY OF SUCH DAMAGE.
27
28
29 $FreeBSD$
30
31 ***************************************************************************/
32
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/ctype.h>
36 #include <sys/endian.h>
37 #include <sys/bus.h>
38
39 #include <sys/lock.h>
40 #include <sys/mutex.h>
41
42 #include <dev/mii/mii.h>
43
44 #ifdef CONFIG_DEFINED
45 #include <common/cxgb_version.h>
46 #include <cxgb_config.h>
47 #else
48 #include <dev/cxgb/common/cxgb_version.h>
49 #include <dev/cxgb/cxgb_config.h>
50 #endif
51
52 #ifndef _CXGB_OSDEP_H_
53 #define _CXGB_OSDEP_H_
54
55 typedef struct adapter adapter_t;
56 struct sge_rspq;
57
58 enum {
59 TP_TMR_RES = 200, /* TP timer resolution in usec */
60 MAX_NPORTS = 4, /* max # of ports */
61 TP_SRAM_OFFSET = 4096, /* TP SRAM content offset in eeprom */
62 TP_SRAM_LEN = 2112, /* TP SRAM content offset in eeprom */
63 };
64
65 struct t3_mbuf_hdr {
66 struct mbuf *mh_head;
67 struct mbuf *mh_tail;
68 };
69
70 #ifndef PANIC_IF
71 #define PANIC_IF(exp) do { \
72 if (exp) \
73 panic("BUG: %s", #exp); \
74 } while (0)
75 #endif
76
77 #define m_get_priority(m) ((uintptr_t)(m)->m_pkthdr.rcvif)
78 #define m_set_priority(m, pri) ((m)->m_pkthdr.rcvif = (struct ifnet *)((uintptr_t)pri))
79 #define m_set_sgl(m, sgl) ((m)->m_pkthdr.header = (sgl))
80 #define m_get_sgl(m) ((bus_dma_segment_t *)(m)->m_pkthdr.header)
81 #define m_set_sgllen(m, len) ((m)->m_pkthdr.ether_vtag = len)
82 #define m_get_sgllen(m) ((m)->m_pkthdr.ether_vtag)
83
84 /*
85 * XXX FIXME
86 */
87 #define m_set_toep(m, a) ((m)->m_pkthdr.header = (a))
88 #define m_get_toep(m) ((m)->m_pkthdr.header)
89 #define m_set_handler(m, handler) ((m)->m_pkthdr.header = (handler))
90
91 #define m_set_socket(m, a) ((m)->m_pkthdr.header = (a))
92 #define m_get_socket(m) ((m)->m_pkthdr.header)
93
94 #define KTR_CXGB KTR_SPARE2
95 void cxgb_log_tcb(struct adapter *sc, unsigned int tid);
96
97 #define MT_DONTFREE 128
98
99 #if __FreeBSD_version > 700030
100 #define INTR_FILTERS
101 #define FIRMWARE_LATEST
102 #endif
103
104 #if ((__FreeBSD_version > 602103) && (__FreeBSD_version < 700000))
105 #define FIRMWARE_LATEST
106 #endif
107
108 #if __FreeBSD_version > 700000
109 #define MSI_SUPPORTED
110 #define TSO_SUPPORTED
111 #define VLAN_SUPPORTED
112 #define TASKQUEUE_CURRENT
113 #else
114 #define if_name(ifp) (ifp)->if_xname
115 #define M_SANITY(m, n)
116 #endif
117
118 #define __read_mostly __attribute__((__section__(".data.read_mostly")))
119
120 /*
121 * Workaround for weird Chelsio issue
122 */
123 #if __FreeBSD_version > 700029
124 #define PRIV_SUPPORTED
125 #endif
126
127 #define CXGB_TX_CLEANUP_THRESHOLD 32
128
129
130 #ifdef DEBUG_PRINT
131 #define DPRINTF printf
132 #else
133 #define DPRINTF(...)
134 #endif
135
136 #define TX_MAX_SIZE (1 << 16) /* 64KB */
137 #define TX_MAX_SEGS 36 /* maximum supported by card */
138
139 #define TX_MAX_DESC 4 /* max descriptors per packet */
140
141
142 #define TX_START_MIN_DESC (TX_MAX_DESC << 2)
143 #define TX_START_MAX_DESC (TX_MAX_DESC << 3) /* maximum number of descriptors
144 * call to start used per */
145
146 #define TX_CLEAN_MAX_DESC (TX_MAX_DESC << 4) /* maximum tx descriptors
147 * to clean per iteration */
148 #define TX_WR_SIZE_MAX 11*1024 /* the maximum total size of packets aggregated into a single
149 * TX WR
150 */
151 #define TX_WR_COUNT_MAX 7 /* the maximum total number of packets that can be
152 * aggregated into a single TX WR
153 */
154
155
156 #if defined(__i386__) || defined(__amd64__)
157 #define mb() __asm volatile("mfence":::"memory")
158 #define rmb() __asm volatile("lfence":::"memory")
159 #define wmb() __asm volatile("sfence" ::: "memory")
160 #define smp_mb() mb()
161
162 #define L1_CACHE_BYTES 128
163 static __inline
164 void prefetch(void *x)
165 {
166 __asm volatile("prefetcht0 %0" :: "m" (*(unsigned long *)x));
167 }
168
169 extern void kdb_backtrace(void);
170
171 #define WARN_ON(condition) do { \
172 if (__predict_false((condition)!=0)) { \
173 log(LOG_WARNING, "BUG: warning at %s:%d/%s()\n", __FILE__, __LINE__, __FUNCTION__); \
174 kdb_backtrace(); \
175 } \
176 } while (0)
177
178
179 #else /* !i386 && !amd64 */
180 #define mb()
181 #define rmb()
182 #define wmb()
183 #define smp_mb()
184 #define prefetch(x)
185 #define L1_CACHE_BYTES 32
186 #endif
187
188 struct buf_ring {
189 caddr_t *br_ring;
190 volatile uint32_t br_cons;
191 volatile uint32_t br_prod;
192 int br_size;
193 struct mtx br_lock;
194 };
195
196 struct buf_ring *buf_ring_alloc(int count, int flags);
197 void buf_ring_free(struct buf_ring *);
198
199 static __inline int
200 buf_ring_count(struct buf_ring *mr)
201 {
202 int size = mr->br_size;
203 uint32_t mask = size - 1;
204
205 return ((size + mr->br_prod - mr->br_cons) & mask);
206 }
207
208 static __inline int
209 buf_ring_empty(struct buf_ring *mr)
210 {
211 return (mr->br_cons == mr->br_prod);
212 }
213
214 static __inline int
215 buf_ring_full(struct buf_ring *mr)
216 {
217 uint32_t mask;
218
219 mask = mr->br_size - 1;
220 return (mr->br_cons == ((mr->br_prod + 1) & mask));
221 }
222
223 /*
224 * The producer and consumer are independently locked
225 * this relies on the consumer providing his own serialization
226 *
227 */
228 static __inline void *
229 buf_ring_dequeue(struct buf_ring *mr)
230 {
231 uint32_t prod, cons, mask;
232 caddr_t *ring, m;
233
234 ring = (caddr_t *)mr->br_ring;
235 mask = mr->br_size - 1;
236 cons = mr->br_cons;
237 mb();
238 prod = mr->br_prod;
239 m = NULL;
240 if (cons != prod) {
241 m = ring[cons];
242 ring[cons] = NULL;
243 mr->br_cons = (cons + 1) & mask;
244 mb();
245 }
246 return (m);
247 }
248
249 #ifdef DEBUG_BUFRING
250 static __inline void
251 __buf_ring_scan(struct buf_ring *mr, void *m, char *file, int line)
252 {
253 int i;
254
255 for (i = 0; i < mr->br_size; i++)
256 if (m == mr->br_ring[i])
257 panic("%s:%d m=%p present prod=%d cons=%d idx=%d", file,
258 line, m, mr->br_prod, mr->br_cons, i);
259 }
260
261 static __inline void
262 buf_ring_scan(struct buf_ring *mr, void *m, char *file, int line)
263 {
264 mtx_lock(&mr->br_lock);
265 __buf_ring_scan(mr, m, file, line);
266 mtx_unlock(&mr->br_lock);
267 }
268
269 #else
270 static __inline void
271 __buf_ring_scan(struct buf_ring *mr, void *m, char *file, int line)
272 {
273 }
274
275 static __inline void
276 buf_ring_scan(struct buf_ring *mr, void *m, char *file, int line)
277 {
278 }
279 #endif
280
281 static __inline int
282 __buf_ring_enqueue(struct buf_ring *mr, void *m, char *file, int line)
283 {
284
285 uint32_t prod, cons, mask;
286 int err;
287
288 mask = mr->br_size - 1;
289 prod = mr->br_prod;
290 mb();
291 cons = mr->br_cons;
292 __buf_ring_scan(mr, m, file, line);
293 if (((prod + 1) & mask) != cons) {
294 KASSERT(mr->br_ring[prod] == NULL, ("overwriting entry"));
295 mr->br_ring[prod] = m;
296 mb();
297 mr->br_prod = (prod + 1) & mask;
298 err = 0;
299 } else
300 err = ENOBUFS;
301
302 return (err);
303 }
304
305 static __inline int
306 buf_ring_enqueue_(struct buf_ring *mr, void *m, char *file, int line)
307 {
308 int err;
309
310 mtx_lock(&mr->br_lock);
311 err = __buf_ring_enqueue(mr, m, file, line);
312 mtx_unlock(&mr->br_lock);
313
314 return (err);
315 }
316
317 #define buf_ring_enqueue(mr, m) buf_ring_enqueue_((mr), (m), __FILE__, __LINE__)
318
319
320 static __inline void *
321 buf_ring_peek(struct buf_ring *mr)
322 {
323 int prod, cons, mask;
324 caddr_t *ring, m;
325
326 ring = (caddr_t *)mr->br_ring;
327 mask = mr->br_size - 1;
328 cons = mr->br_cons;
329 prod = mr->br_prod;
330 m = NULL;
331 if (cons != prod)
332 m = ring[cons];
333
334 return (m);
335 }
336
337 #define DBG_RX (1 << 0)
338 static const int debug_flags = DBG_RX;
339
340 #ifdef DEBUG_PRINT
341 #define DBG(flag, msg) do { \
342 if ((flag & debug_flags)) \
343 printf msg; \
344 } while (0)
345 #else
346 #define DBG(...)
347 #endif
348
349 #include <sys/syslog.h>
350
351 #define promisc_rx_mode(rm) ((rm)->port->ifp->if_flags & IFF_PROMISC)
352 #define allmulti_rx_mode(rm) ((rm)->port->ifp->if_flags & IFF_ALLMULTI)
353
354 #define CH_ERR(adap, fmt, ...) log(LOG_ERR, fmt, ##__VA_ARGS__)
355 #define CH_WARN(adap, fmt, ...) log(LOG_WARNING, fmt, ##__VA_ARGS__)
356 #define CH_ALERT(adap, fmt, ...) log(LOG_ALERT, fmt, ##__VA_ARGS__)
357
358 #define t3_os_sleep(x) DELAY((x) * 1000)
359
360 #define test_and_clear_bit(bit, p) atomic_cmpset_int((p), ((*(p)) | (1<<bit)), ((*(p)) & ~(1<<bit)))
361
362 #define max_t(type, a, b) (type)max((a), (b))
363 #define net_device ifnet
364 #define cpu_to_be32 htobe32
365
366 /* Standard PHY definitions */
367 #define BMCR_LOOPBACK BMCR_LOOP
368 #define BMCR_ISOLATE BMCR_ISO
369 #define BMCR_ANENABLE BMCR_AUTOEN
370 #define BMCR_SPEED1000 BMCR_SPEED1
371 #define BMCR_SPEED100 BMCR_SPEED0
372 #define BMCR_ANRESTART BMCR_STARTNEG
373 #define BMCR_FULLDPLX BMCR_FDX
374 #define BMSR_LSTATUS BMSR_LINK
375 #define BMSR_ANEGCOMPLETE BMSR_ACOMP
376
377 #define MII_LPA MII_ANLPAR
378 #define MII_ADVERTISE MII_ANAR
379 #define MII_CTRL1000 MII_100T2CR
380
381 #define ADVERTISE_PAUSE_CAP ANAR_FC
382 #define ADVERTISE_PAUSE_ASYM ANAR_X_PAUSE_ASYM
383 #define ADVERTISE_PAUSE ANAR_X_PAUSE_SYM
384 #define ADVERTISE_1000HALF ANAR_X_HD
385 #define ADVERTISE_1000FULL ANAR_X_FD
386 #define ADVERTISE_10FULL ANAR_10_FD
387 #define ADVERTISE_10HALF ANAR_10
388 #define ADVERTISE_100FULL ANAR_TX_FD
389 #define ADVERTISE_100HALF ANAR_TX
390
391
392 #define ADVERTISE_1000XHALF ANAR_X_HD
393 #define ADVERTISE_1000XFULL ANAR_X_FD
394 #define ADVERTISE_1000XPSE_ASYM ANAR_X_PAUSE_ASYM
395 #define ADVERTISE_1000XPAUSE ANAR_X_PAUSE_SYM
396
397 #define ADVERTISE_CSMA ANAR_CSMA
398 #define ADVERTISE_NPAGE ANAR_NP
399
400
401 /* Standard PCI Extended Capaibilities definitions */
402 #define PCI_CAP_ID_VPD 0x03
403 #define PCI_VPD_ADDR 2
404 #define PCI_VPD_ADDR_F 0x8000
405 #define PCI_VPD_DATA 4
406
407 #define PCI_CAP_ID_EXP 0x10
408 #define PCI_EXP_DEVCTL 8
409 #define PCI_EXP_DEVCTL_PAYLOAD 0x00e0
410 #define PCI_EXP_LNKCTL 16
411 #define PCI_EXP_LNKSTA 18
412
413 /*
414 * Linux compatibility macros
415 */
416
417 /* Some simple translations */
418 #define __devinit
419 #define udelay(x) DELAY(x)
420 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
421 #define le32_to_cpu(x) le32toh(x)
422 #define le16_to_cpu(x) le16toh(x)
423 #define cpu_to_le32(x) htole32(x)
424 #define swab32(x) bswap32(x)
425 #define simple_strtoul strtoul
426
427
428 #ifndef LINUX_TYPES_DEFINED
429 typedef uint8_t u8;
430 typedef uint16_t u16;
431 typedef uint32_t u32;
432 typedef uint64_t u64;
433
434 typedef uint8_t __u8;
435 typedef uint16_t __u16;
436 typedef uint32_t __u32;
437 typedef uint8_t __be8;
438 typedef uint16_t __be16;
439 typedef uint32_t __be32;
440 typedef uint64_t __be64;
441 #endif
442
443
444 #if BYTE_ORDER == BIG_ENDIAN
445 #define __BIG_ENDIAN_BITFIELD
446 #elif BYTE_ORDER == LITTLE_ENDIAN
447 #define __LITTLE_ENDIAN_BITFIELD
448 #else
449 #error "Must set BYTE_ORDER"
450 #endif
451
452 /* Indicates what features are supported by the interface. */
453 #define SUPPORTED_10baseT_Half (1 << 0)
454 #define SUPPORTED_10baseT_Full (1 << 1)
455 #define SUPPORTED_100baseT_Half (1 << 2)
456 #define SUPPORTED_100baseT_Full (1 << 3)
457 #define SUPPORTED_1000baseT_Half (1 << 4)
458 #define SUPPORTED_1000baseT_Full (1 << 5)
459 #define SUPPORTED_Autoneg (1 << 6)
460 #define SUPPORTED_TP (1 << 7)
461 #define SUPPORTED_AUI (1 << 8)
462 #define SUPPORTED_MII (1 << 9)
463 #define SUPPORTED_FIBRE (1 << 10)
464 #define SUPPORTED_BNC (1 << 11)
465 #define SUPPORTED_10000baseT_Full (1 << 12)
466 #define SUPPORTED_Pause (1 << 13)
467 #define SUPPORTED_Asym_Pause (1 << 14)
468
469 /* Indicates what features are advertised by the interface. */
470 #define ADVERTISED_10baseT_Half (1 << 0)
471 #define ADVERTISED_10baseT_Full (1 << 1)
472 #define ADVERTISED_100baseT_Half (1 << 2)
473 #define ADVERTISED_100baseT_Full (1 << 3)
474 #define ADVERTISED_1000baseT_Half (1 << 4)
475 #define ADVERTISED_1000baseT_Full (1 << 5)
476 #define ADVERTISED_Autoneg (1 << 6)
477 #define ADVERTISED_TP (1 << 7)
478 #define ADVERTISED_AUI (1 << 8)
479 #define ADVERTISED_MII (1 << 9)
480 #define ADVERTISED_FIBRE (1 << 10)
481 #define ADVERTISED_BNC (1 << 11)
482 #define ADVERTISED_10000baseT_Full (1 << 12)
483 #define ADVERTISED_Pause (1 << 13)
484 #define ADVERTISED_Asym_Pause (1 << 14)
485
486 /* Enable or disable autonegotiation. If this is set to enable,
487 * the forced link modes above are completely ignored.
488 */
489 #define AUTONEG_DISABLE 0x00
490 #define AUTONEG_ENABLE 0x01
491
492 #define SPEED_10 10
493 #define SPEED_100 100
494 #define SPEED_1000 1000
495 #define SPEED_10000 10000
496 #define DUPLEX_HALF 0
497 #define DUPLEX_FULL 1
498
499 #endif
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