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1 | #ifndef _IPATH_KERNEL_H |
2 | #define _IPATH_KERNEL_H | |
3 | /* | |
4 | * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. | |
5 | * | |
6 | * This software is available to you under a choice of one of two | |
7 | * licenses. You may choose to be licensed under the terms of the GNU | |
8 | * General Public License (GPL) Version 2, available from the file | |
9 | * COPYING in the main directory of this source tree, or the | |
10 | * OpenIB.org BSD license below: | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or | |
13 | * without modification, are permitted provided that the following | |
14 | * conditions are met: | |
15 | * | |
16 | * - Redistributions of source code must retain the above | |
17 | * copyright notice, this list of conditions and the following | |
18 | * disclaimer. | |
19 | * | |
20 | * - Redistributions in binary form must reproduce the above | |
21 | * copyright notice, this list of conditions and the following | |
22 | * disclaimer in the documentation and/or other materials | |
23 | * provided with the distribution. | |
24 | * | |
25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
32 | * SOFTWARE. | |
33 | */ | |
34 | ||
35 | /* | |
36 | * This header file is the base header file for infinipath kernel code | |
37 | * ipath_user.h serves a similar purpose for user code. | |
38 | */ | |
39 | ||
40 | #include <linux/interrupt.h> | |
41 | #include <asm/io.h> | |
42 | ||
43 | #include "ipath_common.h" | |
44 | #include "ipath_debug.h" | |
45 | #include "ipath_registers.h" | |
46 | ||
47 | /* only s/w major version of InfiniPath we can handle */ | |
48 | #define IPATH_CHIP_VERS_MAJ 2U | |
49 | ||
50 | /* don't care about this except printing */ | |
51 | #define IPATH_CHIP_VERS_MIN 0U | |
52 | ||
53 | /* temporary, maybe always */ | |
54 | extern struct infinipath_stats ipath_stats; | |
55 | ||
56 | #define IPATH_CHIP_SWVERSION IPATH_CHIP_VERS_MAJ | |
57 | ||
58 | struct ipath_portdata { | |
59 | void **port_rcvegrbuf; | |
60 | dma_addr_t *port_rcvegrbuf_phys; | |
61 | /* rcvhdrq base, needs mmap before useful */ | |
62 | void *port_rcvhdrq; | |
63 | /* kernel virtual address where hdrqtail is updated */ | |
64 | u64 *port_rcvhdrtail_kvaddr; | |
65 | /* page * used for uaddr */ | |
66 | struct page *port_rcvhdrtail_pagep; | |
67 | /* | |
68 | * temp buffer for expected send setup, allocated at open, instead | |
69 | * of each setup call | |
70 | */ | |
71 | void *port_tid_pg_list; | |
72 | /* when waiting for rcv or pioavail */ | |
73 | wait_queue_head_t port_wait; | |
74 | /* | |
75 | * rcvegr bufs base, physical, must fit | |
76 | * in 44 bits so 32 bit programs mmap64 44 bit works) | |
77 | */ | |
78 | dma_addr_t port_rcvegr_phys; | |
79 | /* mmap of hdrq, must fit in 44 bits */ | |
80 | dma_addr_t port_rcvhdrq_phys; | |
81 | /* | |
82 | * the actual user address that we ipath_mlock'ed, so we can | |
83 | * ipath_munlock it at close | |
84 | */ | |
85 | unsigned long port_rcvhdrtail_uaddr; | |
86 | /* | |
87 | * number of opens on this instance (0 or 1; ignoring forks, dup, | |
88 | * etc. for now) | |
89 | */ | |
90 | int port_cnt; | |
91 | /* | |
92 | * how much space to leave at start of eager TID entries for | |
93 | * protocol use, on each TID | |
94 | */ | |
95 | /* instead of calculating it */ | |
96 | unsigned port_port; | |
97 | /* chip offset of PIO buffers for this port */ | |
98 | u32 port_piobufs; | |
99 | /* how many alloc_pages() chunks in port_rcvegrbuf_pages */ | |
100 | u32 port_rcvegrbuf_chunks; | |
101 | /* how many egrbufs per chunk */ | |
102 | u32 port_rcvegrbufs_perchunk; | |
103 | /* order for port_rcvegrbuf_pages */ | |
104 | size_t port_rcvegrbuf_size; | |
105 | /* rcvhdrq size (for freeing) */ | |
106 | size_t port_rcvhdrq_size; | |
107 | /* next expected TID to check when looking for free */ | |
108 | u32 port_tidcursor; | |
109 | /* next expected TID to check */ | |
110 | unsigned long port_flag; | |
111 | /* WAIT_RCV that timed out, no interrupt */ | |
112 | u32 port_rcvwait_to; | |
113 | /* WAIT_PIO that timed out, no interrupt */ | |
114 | u32 port_piowait_to; | |
115 | /* WAIT_RCV already happened, no wait */ | |
116 | u32 port_rcvnowait; | |
117 | /* WAIT_PIO already happened, no wait */ | |
118 | u32 port_pionowait; | |
119 | /* total number of rcvhdrqfull errors */ | |
120 | u32 port_hdrqfull; | |
121 | /* pid of process using this port */ | |
122 | pid_t port_pid; | |
123 | /* same size as task_struct .comm[] */ | |
124 | char port_comm[16]; | |
125 | /* pkeys set by this use of this port */ | |
126 | u16 port_pkeys[4]; | |
127 | /* so file ops can get at unit */ | |
128 | struct ipath_devdata *port_dd; | |
129 | }; | |
130 | ||
131 | struct sk_buff; | |
132 | ||
133 | /* | |
134 | * control information for layered drivers | |
135 | */ | |
136 | struct _ipath_layer { | |
137 | void *l_arg; | |
138 | }; | |
139 | ||
140 | /* Verbs layer interface */ | |
141 | struct _verbs_layer { | |
142 | void *l_arg; | |
143 | struct timer_list l_timer; | |
144 | }; | |
145 | ||
146 | struct ipath_devdata { | |
147 | struct list_head ipath_list; | |
148 | ||
149 | struct ipath_kregs const *ipath_kregs; | |
150 | struct ipath_cregs const *ipath_cregs; | |
151 | ||
152 | /* mem-mapped pointer to base of chip regs */ | |
153 | u64 __iomem *ipath_kregbase; | |
154 | /* end of mem-mapped chip space; range checking */ | |
155 | u64 __iomem *ipath_kregend; | |
156 | /* physical address of chip for io_remap, etc. */ | |
157 | unsigned long ipath_physaddr; | |
158 | /* base of memory alloced for ipath_kregbase, for free */ | |
159 | u64 *ipath_kregalloc; | |
160 | /* | |
161 | * version of kregbase that doesn't have high bits set (for 32 bit | |
162 | * programs, so mmap64 44 bit works) | |
163 | */ | |
164 | u64 __iomem *ipath_kregvirt; | |
165 | /* | |
166 | * virtual address where port0 rcvhdrqtail updated for this unit. | |
167 | * only written to by the chip, not the driver. | |
168 | */ | |
169 | volatile __le64 *ipath_hdrqtailptr; | |
170 | dma_addr_t ipath_dma_addr; | |
171 | /* ipath_cfgports pointers */ | |
172 | struct ipath_portdata **ipath_pd; | |
173 | /* sk_buffs used by port 0 eager receive queue */ | |
174 | struct sk_buff **ipath_port0_skbs; | |
175 | /* kvirt address of 1st 2k pio buffer */ | |
176 | void __iomem *ipath_pio2kbase; | |
177 | /* kvirt address of 1st 4k pio buffer */ | |
178 | void __iomem *ipath_pio4kbase; | |
179 | /* | |
180 | * points to area where PIOavail registers will be DMA'ed. | |
181 | * Has to be on a page of it's own, because the page will be | |
182 | * mapped into user program space. This copy is *ONLY* ever | |
183 | * written by DMA, not by the driver! Need a copy per device | |
184 | * when we get to multiple devices | |
185 | */ | |
186 | volatile __le64 *ipath_pioavailregs_dma; | |
187 | /* physical address where updates occur */ | |
188 | dma_addr_t ipath_pioavailregs_phys; | |
189 | struct _ipath_layer ipath_layer; | |
190 | /* setup intr */ | |
191 | int (*ipath_f_intrsetup)(struct ipath_devdata *); | |
192 | /* setup on-chip bus config */ | |
193 | int (*ipath_f_bus)(struct ipath_devdata *, struct pci_dev *); | |
194 | /* hard reset chip */ | |
195 | int (*ipath_f_reset)(struct ipath_devdata *); | |
196 | int (*ipath_f_get_boardname)(struct ipath_devdata *, char *, | |
197 | size_t); | |
198 | void (*ipath_f_init_hwerrors)(struct ipath_devdata *); | |
199 | void (*ipath_f_handle_hwerrors)(struct ipath_devdata *, char *, | |
200 | size_t); | |
201 | void (*ipath_f_quiet_serdes)(struct ipath_devdata *); | |
202 | int (*ipath_f_bringup_serdes)(struct ipath_devdata *); | |
203 | int (*ipath_f_early_init)(struct ipath_devdata *); | |
204 | void (*ipath_f_clear_tids)(struct ipath_devdata *, unsigned); | |
205 | void (*ipath_f_put_tid)(struct ipath_devdata *, u64 __iomem*, | |
206 | u32, unsigned long); | |
207 | void (*ipath_f_tidtemplate)(struct ipath_devdata *); | |
208 | void (*ipath_f_cleanup)(struct ipath_devdata *); | |
209 | void (*ipath_f_setextled)(struct ipath_devdata *, u64, u64); | |
210 | /* fill out chip-specific fields */ | |
211 | int (*ipath_f_get_base_info)(struct ipath_portdata *, void *); | |
212 | struct _verbs_layer verbs_layer; | |
213 | /* total dwords sent (summed from counter) */ | |
214 | u64 ipath_sword; | |
215 | /* total dwords rcvd (summed from counter) */ | |
216 | u64 ipath_rword; | |
217 | /* total packets sent (summed from counter) */ | |
218 | u64 ipath_spkts; | |
219 | /* total packets rcvd (summed from counter) */ | |
220 | u64 ipath_rpkts; | |
221 | /* ipath_statusp initially points to this. */ | |
222 | u64 _ipath_status; | |
223 | /* GUID for this interface, in network order */ | |
224 | __be64 ipath_guid; | |
225 | /* | |
226 | * aggregrate of error bits reported since last cleared, for | |
227 | * limiting of error reporting | |
228 | */ | |
229 | ipath_err_t ipath_lasterror; | |
230 | /* | |
231 | * aggregrate of error bits reported since last cleared, for | |
232 | * limiting of hwerror reporting | |
233 | */ | |
234 | ipath_err_t ipath_lasthwerror; | |
235 | /* | |
236 | * errors masked because they occur too fast, also includes errors | |
237 | * that are always ignored (ipath_ignorederrs) | |
238 | */ | |
239 | ipath_err_t ipath_maskederrs; | |
240 | /* time in jiffies at which to re-enable maskederrs */ | |
241 | unsigned long ipath_unmasktime; | |
242 | /* | |
243 | * errors always ignored (masked), at least for a given | |
244 | * chip/device, because they are wrong or not useful | |
245 | */ | |
246 | ipath_err_t ipath_ignorederrs; | |
247 | /* count of egrfull errors, combined for all ports */ | |
248 | u64 ipath_last_tidfull; | |
249 | /* for ipath_qcheck() */ | |
250 | u64 ipath_lastport0rcv_cnt; | |
251 | /* template for writing TIDs */ | |
252 | u64 ipath_tidtemplate; | |
253 | /* value to write to free TIDs */ | |
254 | u64 ipath_tidinvalid; | |
255 | /* PE-800 rcv interrupt setup */ | |
256 | u64 ipath_rhdrhead_intr_off; | |
257 | ||
258 | /* size of memory at ipath_kregbase */ | |
259 | u32 ipath_kregsize; | |
260 | /* number of registers used for pioavail */ | |
261 | u32 ipath_pioavregs; | |
262 | /* IPATH_POLL, etc. */ | |
263 | u32 ipath_flags; | |
264 | /* ipath_flags sma is waiting for */ | |
265 | u32 ipath_sma_state_wanted; | |
266 | /* last buffer for user use, first buf for kernel use is this | |
267 | * index. */ | |
268 | u32 ipath_lastport_piobuf; | |
269 | /* is a stats timer active */ | |
270 | u32 ipath_stats_timer_active; | |
271 | /* dwords sent read from counter */ | |
272 | u32 ipath_lastsword; | |
273 | /* dwords received read from counter */ | |
274 | u32 ipath_lastrword; | |
275 | /* sent packets read from counter */ | |
276 | u32 ipath_lastspkts; | |
277 | /* received packets read from counter */ | |
278 | u32 ipath_lastrpkts; | |
279 | /* pio bufs allocated per port */ | |
280 | u32 ipath_pbufsport; | |
281 | /* | |
282 | * number of ports configured as max; zero is set to number chip | |
283 | * supports, less gives more pio bufs/port, etc. | |
284 | */ | |
285 | u32 ipath_cfgports; | |
286 | /* port0 rcvhdrq head offset */ | |
287 | u32 ipath_port0head; | |
288 | /* count of port 0 hdrqfull errors */ | |
289 | u32 ipath_p0_hdrqfull; | |
290 | ||
291 | /* | |
292 | * (*cfgports) used to suppress multiple instances of same | |
293 | * port staying stuck at same point | |
294 | */ | |
295 | u32 *ipath_lastrcvhdrqtails; | |
296 | /* | |
297 | * (*cfgports) used to suppress multiple instances of same | |
298 | * port staying stuck at same point | |
299 | */ | |
300 | u32 *ipath_lastegrheads; | |
301 | /* | |
302 | * index of last piobuffer we used. Speeds up searching, by | |
303 | * starting at this point. Doesn't matter if multiple cpu's use and | |
304 | * update, last updater is only write that matters. Whenever it | |
305 | * wraps, we update shadow copies. Need a copy per device when we | |
306 | * get to multiple devices | |
307 | */ | |
308 | u32 ipath_lastpioindex; | |
309 | /* max length of freezemsg */ | |
310 | u32 ipath_freezelen; | |
311 | /* | |
312 | * consecutive times we wanted a PIO buffer but were unable to | |
313 | * get one | |
314 | */ | |
315 | u32 ipath_consec_nopiobuf; | |
316 | /* | |
317 | * hint that we should update ipath_pioavailshadow before | |
318 | * looking for a PIO buffer | |
319 | */ | |
320 | u32 ipath_upd_pio_shadow; | |
321 | /* so we can rewrite it after a chip reset */ | |
322 | u32 ipath_pcibar0; | |
323 | /* so we can rewrite it after a chip reset */ | |
324 | u32 ipath_pcibar1; | |
325 | /* sequential tries for SMA send and no bufs */ | |
326 | u32 ipath_nosma_bufs; | |
327 | /* duration (seconds) ipath_nosma_bufs set */ | |
328 | u32 ipath_nosma_secs; | |
329 | ||
330 | /* HT/PCI Vendor ID (here for NodeInfo) */ | |
331 | u16 ipath_vendorid; | |
332 | /* HT/PCI Device ID (here for NodeInfo) */ | |
333 | u16 ipath_deviceid; | |
334 | /* offset in HT config space of slave/primary interface block */ | |
335 | u8 ipath_ht_slave_off; | |
336 | /* for write combining settings */ | |
337 | unsigned long ipath_wc_cookie; | |
338 | /* ref count for each pkey */ | |
339 | atomic_t ipath_pkeyrefs[4]; | |
340 | /* shadow copy of all exptids physaddr; used only by funcsim */ | |
341 | u64 *ipath_tidsimshadow; | |
342 | /* shadow copy of struct page *'s for exp tid pages */ | |
343 | struct page **ipath_pageshadow; | |
344 | /* lock to workaround chip bug 9437 */ | |
345 | spinlock_t ipath_tid_lock; | |
346 | ||
347 | /* | |
348 | * IPATH_STATUS_*, | |
349 | * this address is mapped readonly into user processes so they can | |
350 | * get status cheaply, whenever they want. | |
351 | */ | |
352 | u64 *ipath_statusp; | |
353 | /* freeze msg if hw error put chip in freeze */ | |
354 | char *ipath_freezemsg; | |
355 | /* pci access data structure */ | |
356 | struct pci_dev *pcidev; | |
357 | struct cdev *cdev; | |
358 | struct class_device *class_dev; | |
359 | /* timer used to prevent stats overflow, error throttling, etc. */ | |
360 | struct timer_list ipath_stats_timer; | |
361 | /* check for stale messages in rcv queue */ | |
362 | /* only allow one intr at a time. */ | |
363 | unsigned long ipath_rcv_pending; | |
364 | ||
365 | /* | |
366 | * Shadow copies of registers; size indicates read access size. | |
367 | * Most of them are readonly, but some are write-only register, | |
368 | * where we manipulate the bits in the shadow copy, and then write | |
369 | * the shadow copy to infinipath. | |
370 | * | |
371 | * We deliberately make most of these 32 bits, since they have | |
372 | * restricted range. For any that we read, we won't to generate 32 | |
373 | * bit accesses, since Opteron will generate 2 separate 32 bit HT | |
374 | * transactions for a 64 bit read, and we want to avoid unnecessary | |
375 | * HT transactions. | |
376 | */ | |
377 | ||
378 | /* This is the 64 bit group */ | |
379 | ||
380 | /* | |
381 | * shadow of pioavail, check to be sure it's large enough at | |
382 | * init time. | |
383 | */ | |
384 | unsigned long ipath_pioavailshadow[8]; | |
385 | /* shadow of kr_gpio_out, for rmw ops */ | |
386 | u64 ipath_gpio_out; | |
387 | /* kr_revision shadow */ | |
388 | u64 ipath_revision; | |
389 | /* | |
390 | * shadow of ibcctrl, for interrupt handling of link changes, | |
391 | * etc. | |
392 | */ | |
393 | u64 ipath_ibcctrl; | |
394 | /* | |
395 | * last ibcstatus, to suppress "duplicate" status change messages, | |
396 | * mostly from 2 to 3 | |
397 | */ | |
398 | u64 ipath_lastibcstat; | |
399 | /* hwerrmask shadow */ | |
400 | ipath_err_t ipath_hwerrmask; | |
401 | /* interrupt config reg shadow */ | |
402 | u64 ipath_intconfig; | |
403 | /* kr_sendpiobufbase value */ | |
404 | u64 ipath_piobufbase; | |
405 | ||
406 | /* these are the "32 bit" regs */ | |
407 | ||
408 | /* | |
409 | * number of GUIDs in the flash for this interface; may need some | |
410 | * rethinking for setting on other ifaces | |
411 | */ | |
412 | u32 ipath_nguid; | |
413 | /* | |
414 | * the following two are 32-bit bitmasks, but {test,clear,set}_bit | |
415 | * all expect bit fields to be "unsigned long" | |
416 | */ | |
417 | /* shadow kr_rcvctrl */ | |
418 | unsigned long ipath_rcvctrl; | |
419 | /* shadow kr_sendctrl */ | |
420 | unsigned long ipath_sendctrl; | |
421 | ||
422 | /* value we put in kr_rcvhdrcnt */ | |
423 | u32 ipath_rcvhdrcnt; | |
424 | /* value we put in kr_rcvhdrsize */ | |
425 | u32 ipath_rcvhdrsize; | |
426 | /* value we put in kr_rcvhdrentsize */ | |
427 | u32 ipath_rcvhdrentsize; | |
428 | /* offset of last entry in rcvhdrq */ | |
429 | u32 ipath_hdrqlast; | |
430 | /* kr_portcnt value */ | |
431 | u32 ipath_portcnt; | |
432 | /* kr_pagealign value */ | |
433 | u32 ipath_palign; | |
434 | /* number of "2KB" PIO buffers */ | |
435 | u32 ipath_piobcnt2k; | |
436 | /* size in bytes of "2KB" PIO buffers */ | |
437 | u32 ipath_piosize2k; | |
438 | /* number of "4KB" PIO buffers */ | |
439 | u32 ipath_piobcnt4k; | |
440 | /* size in bytes of "4KB" PIO buffers */ | |
441 | u32 ipath_piosize4k; | |
442 | /* kr_rcvegrbase value */ | |
443 | u32 ipath_rcvegrbase; | |
444 | /* kr_rcvegrcnt value */ | |
445 | u32 ipath_rcvegrcnt; | |
446 | /* kr_rcvtidbase value */ | |
447 | u32 ipath_rcvtidbase; | |
448 | /* kr_rcvtidcnt value */ | |
449 | u32 ipath_rcvtidcnt; | |
450 | /* kr_sendregbase */ | |
451 | u32 ipath_sregbase; | |
452 | /* kr_userregbase */ | |
453 | u32 ipath_uregbase; | |
454 | /* kr_counterregbase */ | |
455 | u32 ipath_cregbase; | |
456 | /* shadow the control register contents */ | |
457 | u32 ipath_control; | |
458 | /* shadow the gpio output contents */ | |
459 | u32 ipath_extctrl; | |
460 | /* PCI revision register (HTC rev on FPGA) */ | |
461 | u32 ipath_pcirev; | |
462 | ||
463 | /* chip address space used by 4k pio buffers */ | |
464 | u32 ipath_4kalign; | |
465 | /* The MTU programmed for this unit */ | |
466 | u32 ipath_ibmtu; | |
467 | /* | |
468 | * The max size IB packet, included IB headers that we can send. | |
469 | * Starts same as ipath_piosize, but is affected when ibmtu is | |
470 | * changed, or by size of eager buffers | |
471 | */ | |
472 | u32 ipath_ibmaxlen; | |
473 | /* | |
474 | * ibmaxlen at init time, limited by chip and by receive buffer | |
475 | * size. Not changed after init. | |
476 | */ | |
477 | u32 ipath_init_ibmaxlen; | |
478 | /* size of each rcvegrbuffer */ | |
479 | u32 ipath_rcvegrbufsize; | |
480 | /* width (2,4,8,16,32) from HT config reg */ | |
481 | u32 ipath_htwidth; | |
482 | /* HT speed (200,400,800,1000) from HT config */ | |
483 | u32 ipath_htspeed; | |
484 | /* ports waiting for PIOavail intr */ | |
485 | unsigned long ipath_portpiowait; | |
486 | /* | |
487 | * number of sequential ibcstatus change for polling active/quiet | |
488 | * (i.e., link not coming up). | |
489 | */ | |
490 | u32 ipath_ibpollcnt; | |
491 | /* low and high portions of MSI capability/vector */ | |
492 | u32 ipath_msi_lo; | |
493 | /* saved after PCIe init for restore after reset */ | |
494 | u32 ipath_msi_hi; | |
495 | /* MSI data (vector) saved for restore */ | |
496 | u16 ipath_msi_data; | |
497 | /* MLID programmed for this instance */ | |
498 | u16 ipath_mlid; | |
499 | /* LID programmed for this instance */ | |
500 | u16 ipath_lid; | |
501 | /* list of pkeys programmed; 0 if not set */ | |
502 | u16 ipath_pkeys[4]; | |
503 | /* ASCII serial number, from flash */ | |
504 | u8 ipath_serial[12]; | |
505 | /* human readable board version */ | |
506 | u8 ipath_boardversion[80]; | |
507 | /* chip major rev, from ipath_revision */ | |
508 | u8 ipath_majrev; | |
509 | /* chip minor rev, from ipath_revision */ | |
510 | u8 ipath_minrev; | |
511 | /* board rev, from ipath_revision */ | |
512 | u8 ipath_boardrev; | |
513 | /* unit # of this chip, if present */ | |
514 | int ipath_unit; | |
515 | /* saved for restore after reset */ | |
516 | u8 ipath_pci_cacheline; | |
517 | /* LID mask control */ | |
518 | u8 ipath_lmc; | |
519 | }; | |
520 | ||
521 | extern volatile __le64 *ipath_port0_rcvhdrtail; | |
522 | extern dma_addr_t ipath_port0_rcvhdrtail_dma; | |
523 | ||
524 | #define IPATH_PORT0_RCVHDRTAIL_SIZE PAGE_SIZE | |
525 | ||
526 | extern struct list_head ipath_dev_list; | |
527 | extern spinlock_t ipath_devs_lock; | |
528 | extern struct ipath_devdata *ipath_lookup(int unit); | |
529 | ||
530 | extern u16 ipath_layer_rcv_opcode; | |
d41d3aeb BS |
531 | extern int __ipath_layer_intr(struct ipath_devdata *, u32); |
532 | extern int ipath_layer_intr(struct ipath_devdata *, u32); | |
533 | extern int __ipath_layer_rcv(struct ipath_devdata *, void *, | |
534 | struct sk_buff *); | |
535 | extern int __ipath_layer_rcv_lid(struct ipath_devdata *, void *); | |
536 | extern int __ipath_verbs_piobufavail(struct ipath_devdata *); | |
537 | extern int __ipath_verbs_rcv(struct ipath_devdata *, void *, void *, u32); | |
538 | ||
539 | void ipath_layer_add(struct ipath_devdata *); | |
540 | void ipath_layer_del(struct ipath_devdata *); | |
541 | ||
542 | int ipath_init_chip(struct ipath_devdata *, int); | |
543 | int ipath_enable_wc(struct ipath_devdata *dd); | |
544 | void ipath_disable_wc(struct ipath_devdata *dd); | |
545 | int ipath_count_units(int *npresentp, int *nupp, u32 *maxportsp); | |
546 | void ipath_shutdown_device(struct ipath_devdata *); | |
547 | ||
548 | struct file_operations; | |
549 | int ipath_cdev_init(int minor, char *name, struct file_operations *fops, | |
550 | struct cdev **cdevp, struct class_device **class_devp); | |
551 | void ipath_cdev_cleanup(struct cdev **cdevp, | |
552 | struct class_device **class_devp); | |
553 | ||
554 | int ipath_diag_init(void); | |
555 | void ipath_diag_cleanup(void); | |
556 | void ipath_diag_bringup_link(struct ipath_devdata *); | |
557 | ||
558 | extern wait_queue_head_t ipath_sma_state_wait; | |
559 | ||
560 | int ipath_user_add(struct ipath_devdata *dd); | |
561 | void ipath_user_del(struct ipath_devdata *dd); | |
562 | ||
563 | struct sk_buff *ipath_alloc_skb(struct ipath_devdata *dd, gfp_t); | |
564 | ||
565 | extern int ipath_diag_inuse; | |
566 | ||
567 | irqreturn_t ipath_intr(int irq, void *devid, struct pt_regs *regs); | |
568 | void ipath_decode_err(char *buf, size_t blen, ipath_err_t err); | |
569 | #if __IPATH_INFO || __IPATH_DBG | |
570 | extern const char *ipath_ibcstatus_str[]; | |
571 | #endif | |
572 | ||
573 | /* clean up any per-chip chip-specific stuff */ | |
574 | void ipath_chip_cleanup(struct ipath_devdata *); | |
575 | /* clean up any chip type-specific stuff */ | |
576 | void ipath_chip_done(void); | |
577 | ||
578 | /* check to see if we have to force ordering for write combining */ | |
579 | int ipath_unordered_wc(void); | |
580 | ||
581 | void ipath_disarm_piobufs(struct ipath_devdata *, unsigned first, | |
582 | unsigned cnt); | |
583 | ||
584 | int ipath_create_rcvhdrq(struct ipath_devdata *, struct ipath_portdata *); | |
585 | void ipath_free_pddata(struct ipath_devdata *, u32, int); | |
586 | ||
587 | int ipath_parse_ushort(const char *str, unsigned short *valp); | |
588 | ||
589 | int ipath_wait_linkstate(struct ipath_devdata *, u32, int); | |
590 | void ipath_set_ib_lstate(struct ipath_devdata *, int); | |
591 | void ipath_kreceive(struct ipath_devdata *); | |
592 | int ipath_setrcvhdrsize(struct ipath_devdata *, unsigned); | |
593 | int ipath_reset_device(int); | |
594 | void ipath_get_faststats(unsigned long); | |
595 | ||
596 | /* for use in system calls, where we want to know device type, etc. */ | |
597 | #define port_fp(fp) ((struct ipath_portdata *) (fp)->private_data) | |
598 | ||
599 | /* | |
600 | * values for ipath_flags | |
601 | */ | |
602 | /* The chip is up and initted */ | |
603 | #define IPATH_INITTED 0x2 | |
604 | /* set if any user code has set kr_rcvhdrsize */ | |
605 | #define IPATH_RCVHDRSZ_SET 0x4 | |
606 | /* The chip is present and valid for accesses */ | |
607 | #define IPATH_PRESENT 0x8 | |
608 | /* HT link0 is only 8 bits wide, ignore upper byte crc | |
609 | * errors, etc. */ | |
610 | #define IPATH_8BIT_IN_HT0 0x10 | |
611 | /* HT link1 is only 8 bits wide, ignore upper byte crc | |
612 | * errors, etc. */ | |
613 | #define IPATH_8BIT_IN_HT1 0x20 | |
614 | /* The link is down */ | |
615 | #define IPATH_LINKDOWN 0x40 | |
616 | /* The link level is up (0x11) */ | |
617 | #define IPATH_LINKINIT 0x80 | |
618 | /* The link is in the armed (0x21) state */ | |
619 | #define IPATH_LINKARMED 0x100 | |
620 | /* The link is in the active (0x31) state */ | |
621 | #define IPATH_LINKACTIVE 0x200 | |
622 | /* link current state is unknown */ | |
623 | #define IPATH_LINKUNK 0x400 | |
624 | /* no IB cable, or no device on IB cable */ | |
625 | #define IPATH_NOCABLE 0x4000 | |
626 | /* Supports port zero per packet receive interrupts via | |
627 | * GPIO */ | |
628 | #define IPATH_GPIO_INTR 0x8000 | |
629 | /* uses the coded 4byte TID, not 8 byte */ | |
630 | #define IPATH_4BYTE_TID 0x10000 | |
631 | /* packet/word counters are 32 bit, else those 4 counters | |
632 | * are 64bit */ | |
633 | #define IPATH_32BITCOUNTERS 0x20000 | |
634 | /* can miss port0 rx interrupts */ | |
635 | #define IPATH_POLL_RX_INTR 0x40000 | |
636 | #define IPATH_DISABLED 0x80000 /* administratively disabled */ | |
637 | ||
638 | /* portdata flag bit offsets */ | |
639 | /* waiting for a packet to arrive */ | |
640 | #define IPATH_PORT_WAITING_RCV 2 | |
641 | /* waiting for a PIO buffer to be available */ | |
642 | #define IPATH_PORT_WAITING_PIO 3 | |
643 | ||
644 | /* free up any allocated data at closes */ | |
645 | void ipath_free_data(struct ipath_portdata *dd); | |
646 | int ipath_waitfor_mdio_cmdready(struct ipath_devdata *); | |
647 | int ipath_waitfor_complete(struct ipath_devdata *, ipath_kreg, u64, u64 *); | |
648 | u32 __iomem *ipath_getpiobuf(struct ipath_devdata *, u32 *); | |
649 | /* init PE-800-specific func */ | |
650 | void ipath_init_pe800_funcs(struct ipath_devdata *); | |
651 | /* init HT-400-specific func */ | |
652 | void ipath_init_ht400_funcs(struct ipath_devdata *); | |
653 | void ipath_get_guid(struct ipath_devdata *); | |
654 | u64 ipath_snap_cntr(struct ipath_devdata *, ipath_creg); | |
655 | ||
656 | /* | |
657 | * number of words used for protocol header if not set by ipath_userinit(); | |
658 | */ | |
659 | #define IPATH_DFLT_RCVHDRSIZE 9 | |
660 | ||
661 | #define IPATH_MDIO_CMD_WRITE 1 | |
662 | #define IPATH_MDIO_CMD_READ 2 | |
663 | #define IPATH_MDIO_CLD_DIV 25 /* to get 2.5 Mhz mdio clock */ | |
664 | #define IPATH_MDIO_CMDVALID 0x40000000 /* bit 30 */ | |
665 | #define IPATH_MDIO_DATAVALID 0x80000000 /* bit 31 */ | |
666 | #define IPATH_MDIO_CTRL_STD 0x0 | |
667 | ||
668 | static inline u64 ipath_mdio_req(int cmd, int dev, int reg, int data) | |
669 | { | |
670 | return (((u64) IPATH_MDIO_CLD_DIV) << 32) | | |
671 | (cmd << 26) | | |
672 | (dev << 21) | | |
673 | (reg << 16) | | |
674 | (data & 0xFFFF); | |
675 | } | |
676 | ||
677 | /* signal and fifo status, in bank 31 */ | |
678 | #define IPATH_MDIO_CTRL_XGXS_REG_8 0x8 | |
679 | /* controls loopback, redundancy */ | |
680 | #define IPATH_MDIO_CTRL_8355_REG_1 0x10 | |
681 | /* premph, encdec, etc. */ | |
682 | #define IPATH_MDIO_CTRL_8355_REG_2 0x11 | |
683 | /* Kchars, etc. */ | |
684 | #define IPATH_MDIO_CTRL_8355_REG_6 0x15 | |
685 | #define IPATH_MDIO_CTRL_8355_REG_9 0x18 | |
686 | #define IPATH_MDIO_CTRL_8355_REG_10 0x1D | |
687 | ||
688 | int ipath_get_user_pages(unsigned long, size_t, struct page **); | |
689 | int ipath_get_user_pages_nocopy(unsigned long, struct page **); | |
690 | void ipath_release_user_pages(struct page **, size_t); | |
691 | void ipath_release_user_pages_on_close(struct page **, size_t); | |
692 | int ipath_eeprom_read(struct ipath_devdata *, u8, void *, int); | |
693 | int ipath_eeprom_write(struct ipath_devdata *, u8, const void *, int); | |
694 | ||
695 | /* these are used for the registers that vary with port */ | |
696 | void ipath_write_kreg_port(const struct ipath_devdata *, ipath_kreg, | |
697 | unsigned, u64); | |
698 | u64 ipath_read_kreg64_port(const struct ipath_devdata *, ipath_kreg, | |
699 | unsigned); | |
700 | ||
701 | /* | |
702 | * We could have a single register get/put routine, that takes a group type, | |
703 | * but this is somewhat clearer and cleaner. It also gives us some error | |
704 | * checking. 64 bit register reads should always work, but are inefficient | |
705 | * on opteron (the northbridge always generates 2 separate HT 32 bit reads), | |
706 | * so we use kreg32 wherever possible. User register and counter register | |
707 | * reads are always 32 bit reads, so only one form of those routines. | |
708 | */ | |
709 | ||
710 | /* | |
711 | * At the moment, none of the s-registers are writable, so no | |
712 | * ipath_write_sreg(), and none of the c-registers are writable, so no | |
713 | * ipath_write_creg(). | |
714 | */ | |
715 | ||
716 | /** | |
717 | * ipath_read_ureg32 - read 32-bit virtualized per-port register | |
718 | * @dd: device | |
719 | * @regno: register number | |
720 | * @port: port number | |
721 | * | |
722 | * Return the contents of a register that is virtualized to be per port. | |
723 | * Prints a debug message and returns -1 on errors (not distinguishable from | |
724 | * valid contents at runtime; we may add a separate error variable at some | |
725 | * point). | |
726 | * | |
727 | * This is normally not used by the kernel, but may be for debugging, and | |
728 | * has a different implementation than user mode, which is why it's not in | |
729 | * _common.h. | |
730 | */ | |
731 | static inline u32 ipath_read_ureg32(const struct ipath_devdata *dd, | |
732 | ipath_ureg regno, int port) | |
733 | { | |
734 | if (!dd->ipath_kregbase) | |
735 | return 0; | |
736 | ||
737 | return readl(regno + (u64 __iomem *) | |
738 | (dd->ipath_uregbase + | |
739 | (char __iomem *)dd->ipath_kregbase + | |
740 | dd->ipath_palign * port)); | |
741 | } | |
742 | ||
743 | /** | |
744 | * ipath_write_ureg - write 32-bit virtualized per-port register | |
745 | * @dd: device | |
746 | * @regno: register number | |
747 | * @value: value | |
748 | * @port: port | |
749 | * | |
750 | * Write the contents of a register that is virtualized to be per port. | |
751 | */ | |
752 | static inline void ipath_write_ureg(const struct ipath_devdata *dd, | |
753 | ipath_ureg regno, u64 value, int port) | |
754 | { | |
755 | u64 __iomem *ubase = (u64 __iomem *) | |
756 | (dd->ipath_uregbase + (char __iomem *) dd->ipath_kregbase + | |
757 | dd->ipath_palign * port); | |
758 | if (dd->ipath_kregbase) | |
759 | writeq(value, &ubase[regno]); | |
760 | } | |
761 | ||
762 | static inline u32 ipath_read_kreg32(const struct ipath_devdata *dd, | |
763 | ipath_kreg regno) | |
764 | { | |
765 | if (!dd->ipath_kregbase) | |
766 | return -1; | |
767 | return readl((u32 __iomem *) & dd->ipath_kregbase[regno]); | |
768 | } | |
769 | ||
770 | static inline u64 ipath_read_kreg64(const struct ipath_devdata *dd, | |
771 | ipath_kreg regno) | |
772 | { | |
773 | if (!dd->ipath_kregbase) | |
774 | return -1; | |
775 | ||
776 | return readq(&dd->ipath_kregbase[regno]); | |
777 | } | |
778 | ||
779 | static inline void ipath_write_kreg(const struct ipath_devdata *dd, | |
780 | ipath_kreg regno, u64 value) | |
781 | { | |
782 | if (dd->ipath_kregbase) | |
783 | writeq(value, &dd->ipath_kregbase[regno]); | |
784 | } | |
785 | ||
786 | static inline u64 ipath_read_creg(const struct ipath_devdata *dd, | |
787 | ipath_sreg regno) | |
788 | { | |
789 | if (!dd->ipath_kregbase) | |
790 | return 0; | |
791 | ||
792 | return readq(regno + (u64 __iomem *) | |
793 | (dd->ipath_cregbase + | |
794 | (char __iomem *)dd->ipath_kregbase)); | |
795 | } | |
796 | ||
797 | static inline u32 ipath_read_creg32(const struct ipath_devdata *dd, | |
798 | ipath_sreg regno) | |
799 | { | |
800 | if (!dd->ipath_kregbase) | |
801 | return 0; | |
802 | return readl(regno + (u64 __iomem *) | |
803 | (dd->ipath_cregbase + | |
804 | (char __iomem *)dd->ipath_kregbase)); | |
805 | } | |
806 | ||
807 | /* | |
808 | * sysfs interface. | |
809 | */ | |
810 | ||
811 | struct device_driver; | |
812 | ||
813 | extern const char ipath_core_version[]; | |
814 | ||
815 | int ipath_driver_create_group(struct device_driver *); | |
816 | void ipath_driver_remove_group(struct device_driver *); | |
817 | ||
818 | int ipath_device_create_group(struct device *, struct ipath_devdata *); | |
819 | void ipath_device_remove_group(struct device *, struct ipath_devdata *); | |
820 | int ipath_expose_reset(struct device *); | |
821 | ||
822 | int ipath_init_ipathfs(void); | |
823 | void ipath_exit_ipathfs(void); | |
824 | int ipathfs_add_device(struct ipath_devdata *); | |
825 | int ipathfs_remove_device(struct ipath_devdata *); | |
826 | ||
827 | /* | |
828 | * Flush write combining store buffers (if present) and perform a write | |
829 | * barrier. | |
830 | */ | |
831 | #if defined(CONFIG_X86_64) | |
832 | #define ipath_flush_wc() asm volatile("sfence" ::: "memory") | |
833 | #else | |
834 | #define ipath_flush_wc() wmb() | |
835 | #endif | |
836 | ||
837 | extern unsigned ipath_debug; /* debugging bit mask */ | |
838 | ||
839 | const char *ipath_get_unit_name(int unit); | |
840 | ||
841 | extern struct mutex ipath_mutex; | |
842 | ||
843 | #define IPATH_DRV_NAME "ipath_core" | |
844 | #define IPATH_MAJOR 233 | |
845 | #define IPATH_SMA_MINOR 128 | |
846 | #define IPATH_DIAG_MINOR 129 | |
847 | #define IPATH_NMINORS 130 | |
848 | ||
849 | #define ipath_dev_err(dd,fmt,...) \ | |
850 | do { \ | |
851 | const struct ipath_devdata *__dd = (dd); \ | |
852 | if (__dd->pcidev) \ | |
853 | dev_err(&__dd->pcidev->dev, "%s: " fmt, \ | |
854 | ipath_get_unit_name(__dd->ipath_unit), \ | |
855 | ##__VA_ARGS__); \ | |
856 | else \ | |
857 | printk(KERN_ERR IPATH_DRV_NAME ": %s: " fmt, \ | |
858 | ipath_get_unit_name(__dd->ipath_unit), \ | |
859 | ##__VA_ARGS__); \ | |
860 | } while (0) | |
861 | ||
862 | #if _IPATH_DEBUGGING | |
863 | ||
864 | # define __IPATH_DBG_WHICH(which,fmt,...) \ | |
865 | do { \ | |
866 | if(unlikely(ipath_debug&(which))) \ | |
867 | printk(KERN_DEBUG IPATH_DRV_NAME ": %s: " fmt, \ | |
868 | __func__,##__VA_ARGS__); \ | |
869 | } while(0) | |
870 | ||
871 | # define ipath_dbg(fmt,...) \ | |
872 | __IPATH_DBG_WHICH(__IPATH_DBG,fmt,##__VA_ARGS__) | |
873 | # define ipath_cdbg(which,fmt,...) \ | |
874 | __IPATH_DBG_WHICH(__IPATH_##which##DBG,fmt,##__VA_ARGS__) | |
875 | ||
876 | #else /* ! _IPATH_DEBUGGING */ | |
877 | ||
878 | # define ipath_dbg(fmt,...) | |
879 | # define ipath_cdbg(which,fmt,...) | |
880 | ||
881 | #endif /* _IPATH_DEBUGGING */ | |
882 | ||
883 | #endif /* _IPATH_KERNEL_H */ |