1 #ifndef _IPATH_KERNEL_H
2 #define _IPATH_KERNEL_H
4 * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved.
5 * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
37 * This header file is the base header file for infinipath kernel code
38 * ipath_user.h serves a similar purpose for user code.
41 #include <linux/interrupt.h>
42 #include <linux/pci.h>
43 #include <linux/dma-mapping.h>
44 #include <linux/mutex.h>
45 #include <linux/list.h>
46 #include <linux/scatterlist.h>
48 #include <rdma/ib_verbs.h>
50 #include "ipath_common.h"
51 #include "ipath_debug.h"
52 #include "ipath_registers.h"
54 /* only s/w major version of InfiniPath we can handle */
55 #define IPATH_CHIP_VERS_MAJ 2U
57 /* don't care about this except printing */
58 #define IPATH_CHIP_VERS_MIN 0U
60 /* temporary, maybe always */
61 extern struct infinipath_stats ipath_stats;
63 #define IPATH_CHIP_SWVERSION IPATH_CHIP_VERS_MAJ
65 * First-cut critierion for "device is active" is
66 * two thousand dwords combined Tx, Rx traffic per
67 * 5-second interval. SMA packets are 64 dwords,
68 * and occur "a few per second", presumably each way.
70 #define IPATH_TRAFFIC_ACTIVE_THRESHOLD (2000)
72 * Struct used to indicate which errors are logged in each of the
73 * error-counters that are logged to EEPROM. A counter is incremented
74 * _once_ (saturating at 255) for each event with any bits set in
75 * the error or hwerror register masks below.
77 #define IPATH_EEP_LOG_CNT (4)
78 struct ipath_eep_log_mask {
83 struct ipath_portdata {
84 void **port_rcvegrbuf;
85 dma_addr_t *port_rcvegrbuf_phys;
86 /* rcvhdrq base, needs mmap before useful */
88 /* kernel virtual address where hdrqtail is updated */
89 void *port_rcvhdrtail_kvaddr;
91 * temp buffer for expected send setup, allocated at open, instead
94 void *port_tid_pg_list;
95 /* when waiting for rcv or pioavail */
96 wait_queue_head_t port_wait;
98 * rcvegr bufs base, physical, must fit
99 * in 44 bits so 32 bit programs mmap64 44 bit works)
101 dma_addr_t port_rcvegr_phys;
102 /* mmap of hdrq, must fit in 44 bits */
103 dma_addr_t port_rcvhdrq_phys;
104 dma_addr_t port_rcvhdrqtailaddr_phys;
106 * number of opens (including slave subports) on this instance
107 * (ignoring forks, dup, etc. for now)
111 * how much space to leave at start of eager TID entries for
112 * protocol use, on each TID
114 /* instead of calculating it */
116 /* non-zero if port is being shared. */
117 u16 port_subport_cnt;
118 /* non-zero if port is being shared. */
120 /* number of pio bufs for this port (all procs, if shared) */
122 /* first pio buffer for this port */
124 /* chip offset of PIO buffers for this port */
126 /* how many alloc_pages() chunks in port_rcvegrbuf_pages */
127 u32 port_rcvegrbuf_chunks;
128 /* how many egrbufs per chunk */
129 u32 port_rcvegrbufs_perchunk;
130 /* order for port_rcvegrbuf_pages */
131 size_t port_rcvegrbuf_size;
132 /* rcvhdrq size (for freeing) */
133 size_t port_rcvhdrq_size;
134 /* next expected TID to check when looking for free */
136 /* next expected TID to check */
137 unsigned long port_flag;
139 unsigned long int_flag;
140 /* WAIT_RCV that timed out, no interrupt */
142 /* WAIT_PIO that timed out, no interrupt */
144 /* WAIT_RCV already happened, no wait */
146 /* WAIT_PIO already happened, no wait */
148 /* total number of rcvhdrqfull errors */
151 * Used to suppress multiple instances of same
152 * port staying stuck at same point.
154 u32 port_lastrcvhdrqtail;
155 /* saved total number of rcvhdrqfull errors for poll edge trigger */
156 u32 port_hdrqfull_poll;
157 /* total number of polled urgent packets */
159 /* saved total number of polled urgent packets for poll edge trigger */
160 u32 port_urgent_poll;
161 /* pid of process using this port */
162 struct pid *port_pid;
163 struct pid *port_subpid[INFINIPATH_MAX_SUBPORT];
164 /* same size as task_struct .comm[] */
166 /* pkeys set by this use of this port */
168 /* so file ops can get at unit */
169 struct ipath_devdata *port_dd;
170 /* A page of memory for rcvhdrhead, rcvegrhead, rcvegrtail * N */
171 void *subport_uregbase;
172 /* An array of pages for the eager receive buffers * N */
173 void *subport_rcvegrbuf;
174 /* An array of pages for the eager header queue entries * N */
175 void *subport_rcvhdr_base;
176 /* The version of the library which opened this port */
178 /* Bitmask of active slaves */
180 /* Type of packets or conditions we want to poll for */
182 /* port rcvhdrq head offset */
184 /* receive packet sequence counter */
189 struct ipath_sge_state;
190 struct ipath_verbs_txreq;
193 * control information for layered drivers
195 struct _ipath_layer {
199 struct ipath_skbinfo {
204 struct ipath_sdma_txreq {
208 struct scatterlist *sg;
211 void (*callback)(void *, int);
212 void *callback_cookie;
214 u16 start_idx; /* sdma private */
215 u16 next_descq_idx; /* sdma private */
216 struct list_head list; /* sdma private */
219 struct ipath_sdma_desc {
223 #define IPATH_SDMA_TXREQ_F_USELARGEBUF 0x1
224 #define IPATH_SDMA_TXREQ_F_HEADTOHOST 0x2
225 #define IPATH_SDMA_TXREQ_F_INTREQ 0x4
226 #define IPATH_SDMA_TXREQ_F_FREEBUF 0x8
227 #define IPATH_SDMA_TXREQ_F_FREEDESC 0x10
228 #define IPATH_SDMA_TXREQ_F_VL15 0x20
230 #define IPATH_SDMA_TXREQ_S_OK 0
231 #define IPATH_SDMA_TXREQ_S_SENDERROR 1
232 #define IPATH_SDMA_TXREQ_S_ABORTED 2
233 #define IPATH_SDMA_TXREQ_S_SHUTDOWN 3
235 #define IPATH_SDMA_STATUS_SCORE_BOARD_DRAIN_IN_PROG (1ull << 63)
236 #define IPATH_SDMA_STATUS_ABORT_IN_PROG (1ull << 62)
237 #define IPATH_SDMA_STATUS_INTERNAL_SDMA_ENABLE (1ull << 61)
238 #define IPATH_SDMA_STATUS_SCB_EMPTY (1ull << 30)
240 /* max dwords in small buffer packet */
241 #define IPATH_SMALLBUF_DWORDS (dd->ipath_piosize2k >> 2)
244 * Possible IB config parameters for ipath_f_get/set_ib_cfg()
246 #define IPATH_IB_CFG_LIDLMC 0 /* Get/set LID (LS16b) and Mask (MS16b) */
247 #define IPATH_IB_CFG_HRTBT 1 /* Get/set Heartbeat off/enable/auto */
248 #define IPATH_IB_HRTBT_ON 3 /* Heartbeat enabled, sent every 100msec */
249 #define IPATH_IB_HRTBT_OFF 0 /* Heartbeat off */
250 #define IPATH_IB_CFG_LWID_ENB 2 /* Get/set allowed Link-width */
251 #define IPATH_IB_CFG_LWID 3 /* Get currently active Link-width */
252 #define IPATH_IB_CFG_SPD_ENB 4 /* Get/set allowed Link speeds */
253 #define IPATH_IB_CFG_SPD 5 /* Get current Link spd */
254 #define IPATH_IB_CFG_RXPOL_ENB 6 /* Get/set Auto-RX-polarity enable */
255 #define IPATH_IB_CFG_LREV_ENB 7 /* Get/set Auto-Lane-reversal enable */
256 #define IPATH_IB_CFG_LINKLATENCY 8 /* Get Auto-Lane-reversal enable */
259 struct ipath_devdata {
260 struct list_head ipath_list;
262 struct ipath_kregs const *ipath_kregs;
263 struct ipath_cregs const *ipath_cregs;
265 /* mem-mapped pointer to base of chip regs */
266 u64 __iomem *ipath_kregbase;
267 /* end of mem-mapped chip space; range checking */
268 u64 __iomem *ipath_kregend;
269 /* physical address of chip for io_remap, etc. */
270 unsigned long ipath_physaddr;
271 /* base of memory alloced for ipath_kregbase, for free */
272 u64 *ipath_kregalloc;
273 /* ipath_cfgports pointers */
274 struct ipath_portdata **ipath_pd;
275 /* sk_buffs used by port 0 eager receive queue */
276 struct ipath_skbinfo *ipath_port0_skbinfo;
277 /* kvirt address of 1st 2k pio buffer */
278 void __iomem *ipath_pio2kbase;
279 /* kvirt address of 1st 4k pio buffer */
280 void __iomem *ipath_pio4kbase;
282 * points to area where PIOavail registers will be DMA'ed.
283 * Has to be on a page of it's own, because the page will be
284 * mapped into user program space. This copy is *ONLY* ever
285 * written by DMA, not by the driver! Need a copy per device
286 * when we get to multiple devices
288 volatile __le64 *ipath_pioavailregs_dma;
289 /* physical address where updates occur */
290 dma_addr_t ipath_pioavailregs_phys;
291 struct _ipath_layer ipath_layer;
293 int (*ipath_f_intrsetup)(struct ipath_devdata *);
294 /* fallback to alternate interrupt type if possible */
295 int (*ipath_f_intr_fallback)(struct ipath_devdata *);
296 /* setup on-chip bus config */
297 int (*ipath_f_bus)(struct ipath_devdata *, struct pci_dev *);
298 /* hard reset chip */
299 int (*ipath_f_reset)(struct ipath_devdata *);
300 int (*ipath_f_get_boardname)(struct ipath_devdata *, char *,
302 void (*ipath_f_init_hwerrors)(struct ipath_devdata *);
303 void (*ipath_f_handle_hwerrors)(struct ipath_devdata *, char *,
305 void (*ipath_f_quiet_serdes)(struct ipath_devdata *);
306 int (*ipath_f_bringup_serdes)(struct ipath_devdata *);
307 int (*ipath_f_early_init)(struct ipath_devdata *);
308 void (*ipath_f_clear_tids)(struct ipath_devdata *, unsigned);
309 void (*ipath_f_put_tid)(struct ipath_devdata *, u64 __iomem*,
311 void (*ipath_f_tidtemplate)(struct ipath_devdata *);
312 void (*ipath_f_cleanup)(struct ipath_devdata *);
313 void (*ipath_f_setextled)(struct ipath_devdata *, u64, u64);
314 /* fill out chip-specific fields */
315 int (*ipath_f_get_base_info)(struct ipath_portdata *, void *);
317 void (*ipath_f_free_irq)(struct ipath_devdata *);
318 struct ipath_message_header *(*ipath_f_get_msgheader)
319 (struct ipath_devdata *, __le32 *);
320 void (*ipath_f_config_ports)(struct ipath_devdata *, ushort);
321 int (*ipath_f_get_ib_cfg)(struct ipath_devdata *, int);
322 int (*ipath_f_set_ib_cfg)(struct ipath_devdata *, int, u32);
323 void (*ipath_f_config_jint)(struct ipath_devdata *, u16 , u16);
324 void (*ipath_f_read_counters)(struct ipath_devdata *,
325 struct infinipath_counters *);
326 void (*ipath_f_xgxs_reset)(struct ipath_devdata *);
327 /* per chip actions needed for IB Link up/down changes */
328 int (*ipath_f_ib_updown)(struct ipath_devdata *, int, u64);
330 unsigned ipath_lastegr_idx;
331 struct ipath_ibdev *verbs_dev;
332 struct timer_list verbs_timer;
333 /* total dwords sent (summed from counter) */
335 /* total dwords rcvd (summed from counter) */
337 /* total packets sent (summed from counter) */
339 /* total packets rcvd (summed from counter) */
341 /* ipath_statusp initially points to this. */
343 /* GUID for this interface, in network order */
346 * aggregrate of error bits reported since last cleared, for
347 * limiting of error reporting
349 ipath_err_t ipath_lasterror;
351 * aggregrate of error bits reported since last cleared, for
352 * limiting of hwerror reporting
354 ipath_err_t ipath_lasthwerror;
355 /* errors masked because they occur too fast */
356 ipath_err_t ipath_maskederrs;
357 u64 ipath_lastlinkrecov; /* link recoveries at last ACTIVE */
358 /* time in jiffies at which to re-enable maskederrs */
359 unsigned long ipath_unmasktime;
360 /* count of egrfull errors, combined for all ports */
361 u64 ipath_last_tidfull;
362 /* for ipath_qcheck() */
363 u64 ipath_lastport0rcv_cnt;
364 /* template for writing TIDs */
365 u64 ipath_tidtemplate;
366 /* value to write to free TIDs */
367 u64 ipath_tidinvalid;
368 /* IBA6120 rcv interrupt setup */
369 u64 ipath_rhdrhead_intr_off;
371 /* size of memory at ipath_kregbase */
373 /* number of registers used for pioavail */
375 /* IPATH_POLL, etc. */
377 /* ipath_flags driver is waiting for */
378 u32 ipath_state_wanted;
379 /* last buffer for user use, first buf for kernel use is this
381 u32 ipath_lastport_piobuf;
382 /* is a stats timer active */
383 u32 ipath_stats_timer_active;
384 /* number of interrupts for this device -- saturates... */
385 u32 ipath_int_counter;
386 /* dwords sent read from counter */
388 /* dwords received read from counter */
390 /* sent packets read from counter */
392 /* received packets read from counter */
394 /* pio bufs allocated per port */
396 /* if remainder on bufs/port, ports < extrabuf get 1 extra */
397 u32 ipath_ports_extrabuf;
398 u32 ipath_pioupd_thresh; /* update threshold, some chips */
400 * number of ports configured as max; zero is set to number chip
401 * supports, less gives more pio bufs/port, etc.
404 /* count of port 0 hdrqfull errors */
405 u32 ipath_p0_hdrqfull;
406 /* port 0 number of receive eager buffers */
407 u32 ipath_p0_rcvegrcnt;
410 * index of last piobuffer we used. Speeds up searching, by
411 * starting at this point. Doesn't matter if multiple cpu's use and
412 * update, last updater is only write that matters. Whenever it
413 * wraps, we update shadow copies. Need a copy per device when we
414 * get to multiple devices
416 u32 ipath_lastpioindex;
417 u32 ipath_lastpioindexl;
418 /* max length of freezemsg */
421 * consecutive times we wanted a PIO buffer but were unable to
424 u32 ipath_consec_nopiobuf;
426 * hint that we should update ipath_pioavailshadow before
427 * looking for a PIO buffer
429 u32 ipath_upd_pio_shadow;
430 /* so we can rewrite it after a chip reset */
432 /* so we can rewrite it after a chip reset */
434 u32 ipath_x1_fix_tries;
435 u32 ipath_autoneg_tries;
436 u32 serdes_first_init_done;
438 struct ipath_relock {
439 atomic_t ipath_relock_timer_active;
440 struct timer_list ipath_relock_timer;
441 unsigned int ipath_relock_interval; /* in jiffies */
442 } ipath_relock_singleton;
444 /* interrupt number */
446 /* HT/PCI Vendor ID (here for NodeInfo) */
448 /* HT/PCI Device ID (here for NodeInfo) */
450 /* offset in HT config space of slave/primary interface block */
451 u8 ipath_ht_slave_off;
452 /* for write combining settings */
453 unsigned long ipath_wc_cookie;
454 unsigned long ipath_wc_base;
455 unsigned long ipath_wc_len;
456 /* ref count for each pkey */
457 atomic_t ipath_pkeyrefs[4];
458 /* shadow copy of struct page *'s for exp tid pages */
459 struct page **ipath_pageshadow;
460 /* shadow copy of dma handles for exp tid pages */
461 dma_addr_t *ipath_physshadow;
462 u64 __iomem *ipath_egrtidbase;
463 /* lock to workaround chip bug 9437 and others */
464 spinlock_t ipath_kernel_tid_lock;
465 spinlock_t ipath_user_tid_lock;
466 spinlock_t ipath_sendctrl_lock;
470 * this address is mapped readonly into user processes so they can
471 * get status cheaply, whenever they want.
474 /* freeze msg if hw error put chip in freeze */
475 char *ipath_freezemsg;
476 /* pci access data structure */
477 struct pci_dev *pcidev;
478 struct cdev *user_cdev;
479 struct cdev *diag_cdev;
480 struct device *user_dev;
481 struct device *diag_dev;
482 /* timer used to prevent stats overflow, error throttling, etc. */
483 struct timer_list ipath_stats_timer;
484 /* timer to verify interrupts work, and fallback if possible */
485 struct timer_list ipath_intrchk_timer;
486 void *ipath_dummy_hdrq; /* used after port close */
487 dma_addr_t ipath_dummy_hdrq_phys;
489 /* SendDMA related entries */
490 spinlock_t ipath_sdma_lock;
491 unsigned long ipath_sdma_status;
492 unsigned long ipath_sdma_abort_jiffies;
493 unsigned long ipath_sdma_abort_intr_timeout;
494 unsigned long ipath_sdma_buf_jiffies;
495 struct ipath_sdma_desc *ipath_sdma_descq;
496 u64 ipath_sdma_descq_added;
497 u64 ipath_sdma_descq_removed;
498 int ipath_sdma_desc_nreserved;
499 u16 ipath_sdma_descq_cnt;
500 u16 ipath_sdma_descq_tail;
501 u16 ipath_sdma_descq_head;
502 u16 ipath_sdma_next_intr;
503 u16 ipath_sdma_reset_wait;
504 u8 ipath_sdma_generation;
505 struct tasklet_struct ipath_sdma_abort_task;
506 struct tasklet_struct ipath_sdma_notify_task;
507 struct list_head ipath_sdma_activelist;
508 struct list_head ipath_sdma_notifylist;
509 atomic_t ipath_sdma_vl15_count;
510 struct timer_list ipath_sdma_vl15_timer;
512 dma_addr_t ipath_sdma_descq_phys;
513 volatile __le64 *ipath_sdma_head_dma;
514 dma_addr_t ipath_sdma_head_phys;
516 unsigned long ipath_ureg_align; /* user register alignment */
518 struct delayed_work ipath_autoneg_work;
519 wait_queue_head_t ipath_autoneg_wait;
521 /* HoL blocking / user app forward-progress state */
522 unsigned ipath_hol_state;
523 unsigned ipath_hol_next;
524 struct timer_list ipath_hol_timer;
527 * Shadow copies of registers; size indicates read access size.
528 * Most of them are readonly, but some are write-only register,
529 * where we manipulate the bits in the shadow copy, and then write
530 * the shadow copy to infinipath.
532 * We deliberately make most of these 32 bits, since they have
533 * restricted range. For any that we read, we won't to generate 32
534 * bit accesses, since Opteron will generate 2 separate 32 bit HT
535 * transactions for a 64 bit read, and we want to avoid unnecessary
539 /* This is the 64 bit group */
542 * shadow of pioavail, check to be sure it's large enough at
545 unsigned long ipath_pioavailshadow[8];
546 /* bitmap of send buffers available for the kernel to use with PIO. */
547 unsigned long ipath_pioavailkernel[8];
548 /* shadow of kr_gpio_out, for rmw ops */
550 /* shadow the gpio mask register */
552 /* shadow the gpio output enable, etc... */
554 /* kr_revision shadow */
557 * shadow of ibcctrl, for interrupt handling of link changes,
562 * last ibcstatus, to suppress "duplicate" status change messages,
565 u64 ipath_lastibcstat;
566 /* hwerrmask shadow */
567 ipath_err_t ipath_hwerrmask;
568 ipath_err_t ipath_errormask; /* errormask shadow */
569 /* interrupt config reg shadow */
571 /* kr_sendpiobufbase value */
572 u64 ipath_piobufbase;
573 /* kr_ibcddrctrl shadow */
574 u64 ipath_ibcddrctrl;
576 /* these are the "32 bit" regs */
579 * number of GUIDs in the flash for this interface; may need some
580 * rethinking for setting on other ifaces
584 * the following two are 32-bit bitmasks, but {test,clear,set}_bit
585 * all expect bit fields to be "unsigned long"
587 /* shadow kr_rcvctrl */
588 unsigned long ipath_rcvctrl;
589 /* shadow kr_sendctrl */
590 unsigned long ipath_sendctrl;
591 /* to not count armlaunch after cancel */
592 unsigned long ipath_lastcancel;
593 /* count cases where special trigger was needed (double write) */
594 unsigned long ipath_spectriggerhit;
596 /* value we put in kr_rcvhdrcnt */
598 /* value we put in kr_rcvhdrsize */
599 u32 ipath_rcvhdrsize;
600 /* value we put in kr_rcvhdrentsize */
601 u32 ipath_rcvhdrentsize;
602 /* offset of last entry in rcvhdrq */
604 /* kr_portcnt value */
606 /* kr_pagealign value */
608 /* number of "2KB" PIO buffers */
610 /* size in bytes of "2KB" PIO buffers */
612 /* number of "4KB" PIO buffers */
614 /* size in bytes of "4KB" PIO buffers */
616 u32 ipath_pioreserved; /* reserved special-inkernel; */
617 /* kr_rcvegrbase value */
618 u32 ipath_rcvegrbase;
619 /* kr_rcvegrcnt value */
621 /* kr_rcvtidbase value */
622 u32 ipath_rcvtidbase;
623 /* kr_rcvtidcnt value */
629 /* kr_counterregbase */
631 /* shadow the control register contents */
633 /* PCI revision register (HTC rev on FPGA) */
636 /* chip address space used by 4k pio buffers */
638 /* The MTU programmed for this unit */
641 * The max size IB packet, included IB headers that we can send.
642 * Starts same as ipath_piosize, but is affected when ibmtu is
643 * changed, or by size of eager buffers
647 * ibmaxlen at init time, limited by chip and by receive buffer
648 * size. Not changed after init.
650 u32 ipath_init_ibmaxlen;
651 /* size of each rcvegrbuffer */
652 u32 ipath_rcvegrbufsize;
653 /* localbus width (1, 2,4,8,16,32) from config space */
654 u32 ipath_lbus_width;
655 /* localbus speed (HT: 200,400,800,1000; PCIe 2500) */
656 u32 ipath_lbus_speed;
658 * number of sequential ibcstatus change for polling active/quiet
659 * (i.e., link not coming up).
662 /* low and high portions of MSI capability/vector */
664 /* saved after PCIe init for restore after reset */
666 /* MSI data (vector) saved for restore */
668 /* MLID programmed for this instance */
670 /* LID programmed for this instance */
672 /* list of pkeys programmed; 0 if not set */
675 * ASCII serial number, from flash, large enough for original
676 * all digit strings, and longer QLogic serial number format
679 /* human readable board version */
680 u8 ipath_boardversion[96];
681 u8 ipath_lbus_info[32]; /* human readable localbus info */
682 /* chip major rev, from ipath_revision */
684 /* chip minor rev, from ipath_revision */
686 /* board rev, from ipath_revision */
688 /* saved for restore after reset */
689 u8 ipath_pci_cacheline;
690 /* LID mask control */
692 /* link width supported */
693 u8 ipath_link_width_supported;
694 /* link speed supported */
695 u8 ipath_link_speed_supported;
696 u8 ipath_link_width_enabled;
697 u8 ipath_link_speed_enabled;
698 u8 ipath_link_width_active;
699 u8 ipath_link_speed_active;
700 /* Rx Polarity inversion (compensate for ~tx on partner) */
703 u8 ipath_r_portenable_shift;
704 u8 ipath_r_intravail_shift;
705 u8 ipath_r_tailupd_shift;
706 u8 ipath_r_portcfg_shift;
708 /* unit # of this chip, if present */
711 /* local link integrity counter */
712 u32 ipath_lli_counter;
713 /* local link integrity errors */
714 u32 ipath_lli_errors;
716 * Above counts only cases where _successive_ LocalLinkIntegrity
717 * errors were seen in the receive headers of kern-packets.
718 * Below are the three (monotonically increasing) counters
719 * maintained via GPIO interrupts on iba6120-rev2.
721 u32 ipath_rxfc_unsupvl_errs;
722 u32 ipath_overrun_thresh_errs;
726 * Not all devices managed by a driver instance are the same
727 * type, so these fields must be per-device.
729 u64 ipath_i_bitsextant;
730 ipath_err_t ipath_e_bitsextant;
731 ipath_err_t ipath_hwe_bitsextant;
734 * Below should be computable from number of ports,
735 * since they are never modified.
737 u64 ipath_i_rcvavail_mask;
738 u64 ipath_i_rcvurg_mask;
739 u16 ipath_i_rcvurg_shift;
740 u16 ipath_i_rcvavail_shift;
743 * Register bits for selecting i2c direction and values, used for
746 u8 ipath_gpio_sda_num;
747 u8 ipath_gpio_scl_num;
748 u8 ipath_i2c_chain_type;
752 /* lock for doing RMW of shadows/regs for ExtCtrl and GPIO */
753 spinlock_t ipath_gpio_lock;
756 * IB link and linktraining states and masks that vary per chip in
757 * some way. Set at init, to avoid each IB status change interrupt
766 u16 ipath_rhf_offset; /* offset of RHF within receive header entry */
769 * shift/mask for linkcmd, linkinitcmd, maxpktlen in ibccontol
770 * reg. Changes for IBA7220
772 u8 ibcc_lic_mask; /* LinkInitCmd */
773 u8 ibcc_lc_shift; /* LinkCmd */
774 u8 ibcc_mpl_shift; /* Maxpktlen */
778 /* used to override LED behavior */
779 u8 ipath_led_override; /* Substituted for normal value, if non-zero */
780 u16 ipath_led_override_timeoff; /* delta to next timer event */
781 u8 ipath_led_override_vals[2]; /* Alternates per blink-frame */
782 u8 ipath_led_override_phase; /* Just counts, LSB picks from vals[] */
783 atomic_t ipath_led_override_timer_active;
784 /* Used to flash LEDs in override mode */
785 struct timer_list ipath_led_override_timer;
787 /* Support (including locks) for EEPROM logging of errors and time */
788 /* control access to actual counters, timer */
789 spinlock_t ipath_eep_st_lock;
790 /* control high-level access to EEPROM */
791 struct mutex ipath_eep_lock;
792 /* Below inc'd by ipath_snap_cntrs(), locked by ipath_eep_st_lock */
793 uint64_t ipath_traffic_wds;
794 /* active time is kept in seconds, but logged in hours */
795 atomic_t ipath_active_time;
796 /* Below are nominal shadow of EEPROM, new since last EEPROM update */
797 uint8_t ipath_eep_st_errs[IPATH_EEP_LOG_CNT];
798 uint8_t ipath_eep_st_new_errs[IPATH_EEP_LOG_CNT];
799 uint16_t ipath_eep_hrs;
801 * masks for which bits of errs, hwerrs that cause
802 * each of the counters to increment.
804 struct ipath_eep_log_mask ipath_eep_st_masks[IPATH_EEP_LOG_CNT];
806 /* interrupt mitigation reload register info */
807 u16 ipath_jint_idle_ticks; /* idle clock ticks */
808 u16 ipath_jint_max_packets; /* max packets across all ports */
811 * lock for access to SerDes, and flags to sequence preset
812 * versus steady-state. 7220-only at the moment.
814 spinlock_t ipath_sdepb_lock;
815 u8 ipath_presets_needed; /* Set if presets to be restored next DOWN */
818 /* ipath_hol_state values (stopping/starting user proc, send flushing) */
819 #define IPATH_HOL_UP 0
820 #define IPATH_HOL_DOWN 1
821 /* ipath_hol_next toggle values, used when hol_state IPATH_HOL_DOWN */
822 #define IPATH_HOL_DOWNSTOP 0
823 #define IPATH_HOL_DOWNCONT 1
825 /* bit positions for sdma_status */
826 #define IPATH_SDMA_ABORTING 0
827 #define IPATH_SDMA_DISARMED 1
828 #define IPATH_SDMA_DISABLED 2
829 #define IPATH_SDMA_LAYERBUF 3
830 #define IPATH_SDMA_RUNNING 30
831 #define IPATH_SDMA_SHUTDOWN 31
833 /* bit combinations that correspond to abort states */
834 #define IPATH_SDMA_ABORT_NONE 0
835 #define IPATH_SDMA_ABORT_ABORTING (1UL << IPATH_SDMA_ABORTING)
836 #define IPATH_SDMA_ABORT_DISARMED ((1UL << IPATH_SDMA_ABORTING) | \
837 (1UL << IPATH_SDMA_DISARMED))
838 #define IPATH_SDMA_ABORT_DISABLED ((1UL << IPATH_SDMA_ABORTING) | \
839 (1UL << IPATH_SDMA_DISABLED))
840 #define IPATH_SDMA_ABORT_ABORTED ((1UL << IPATH_SDMA_ABORTING) | \
841 (1UL << IPATH_SDMA_DISARMED) | (1UL << IPATH_SDMA_DISABLED))
842 #define IPATH_SDMA_ABORT_MASK ((1UL<<IPATH_SDMA_ABORTING) | \
843 (1UL << IPATH_SDMA_DISARMED) | (1UL << IPATH_SDMA_DISABLED))
845 #define IPATH_SDMA_BUF_NONE 0
846 #define IPATH_SDMA_BUF_MASK (1UL<<IPATH_SDMA_LAYERBUF)
848 /* Private data for file operations */
849 struct ipath_filedata {
850 struct ipath_portdata *pd;
853 struct ipath_user_sdma_queue *pq;
855 extern struct list_head ipath_dev_list;
856 extern spinlock_t ipath_devs_lock;
857 extern struct ipath_devdata *ipath_lookup(int unit);
859 int ipath_init_chip(struct ipath_devdata *, int);
860 int ipath_enable_wc(struct ipath_devdata *dd);
861 void ipath_disable_wc(struct ipath_devdata *dd);
862 int ipath_count_units(int *npresentp, int *nupp, int *maxportsp);
863 void ipath_shutdown_device(struct ipath_devdata *);
864 void ipath_clear_freeze(struct ipath_devdata *);
866 struct file_operations;
867 int ipath_cdev_init(int minor, char *name, const struct file_operations *fops,
868 struct cdev **cdevp, struct device **devp);
869 void ipath_cdev_cleanup(struct cdev **cdevp,
870 struct device **devp);
872 int ipath_diag_add(struct ipath_devdata *);
873 void ipath_diag_remove(struct ipath_devdata *);
875 extern wait_queue_head_t ipath_state_wait;
877 int ipath_user_add(struct ipath_devdata *dd);
878 void ipath_user_remove(struct ipath_devdata *dd);
880 struct sk_buff *ipath_alloc_skb(struct ipath_devdata *dd, gfp_t);
882 extern int ipath_diag_inuse;
884 irqreturn_t ipath_intr(int irq, void *devid);
885 int ipath_decode_err(struct ipath_devdata *dd, char *buf, size_t blen,
887 #if __IPATH_INFO || __IPATH_DBG
888 extern const char *ipath_ibcstatus_str[];
891 /* clean up any per-chip chip-specific stuff */
892 void ipath_chip_cleanup(struct ipath_devdata *);
893 /* clean up any chip type-specific stuff */
894 void ipath_chip_done(void);
896 /* check to see if we have to force ordering for write combining */
897 int ipath_unordered_wc(void);
899 void ipath_disarm_piobufs(struct ipath_devdata *, unsigned first,
901 void ipath_cancel_sends(struct ipath_devdata *, int);
903 int ipath_create_rcvhdrq(struct ipath_devdata *, struct ipath_portdata *);
904 void ipath_free_pddata(struct ipath_devdata *, struct ipath_portdata *);
906 int ipath_parse_ushort(const char *str, unsigned short *valp);
908 void ipath_kreceive(struct ipath_portdata *);
909 int ipath_setrcvhdrsize(struct ipath_devdata *, unsigned);
910 int ipath_reset_device(int);
911 void ipath_get_faststats(unsigned long);
912 int ipath_wait_linkstate(struct ipath_devdata *, u32, int);
913 int ipath_set_linkstate(struct ipath_devdata *, u8);
914 int ipath_set_mtu(struct ipath_devdata *, u16);
915 int ipath_set_lid(struct ipath_devdata *, u32, u8);
916 int ipath_set_rx_pol_inv(struct ipath_devdata *dd, u8 new_pol_inv);
917 void ipath_enable_armlaunch(struct ipath_devdata *);
918 void ipath_disable_armlaunch(struct ipath_devdata *);
919 void ipath_hol_down(struct ipath_devdata *);
920 void ipath_hol_up(struct ipath_devdata *);
921 void ipath_hol_event(unsigned long);
922 void ipath_toggle_rclkrls(struct ipath_devdata *);
923 void ipath_sd7220_clr_ibpar(struct ipath_devdata *);
924 void ipath_set_relock_poll(struct ipath_devdata *, int);
925 void ipath_shutdown_relock_poll(struct ipath_devdata *);
927 /* for use in system calls, where we want to know device type, etc. */
928 #define port_fp(fp) ((struct ipath_filedata *)(fp)->private_data)->pd
929 #define subport_fp(fp) \
930 ((struct ipath_filedata *)(fp)->private_data)->subport
931 #define tidcursor_fp(fp) \
932 ((struct ipath_filedata *)(fp)->private_data)->tidcursor
933 #define user_sdma_queue_fp(fp) \
934 ((struct ipath_filedata *)(fp)->private_data)->pq
937 * values for ipath_flags
939 /* chip can report link latency (IB 1.2) */
940 #define IPATH_HAS_LINK_LATENCY 0x1
941 /* The chip is up and initted */
942 #define IPATH_INITTED 0x2
943 /* set if any user code has set kr_rcvhdrsize */
944 #define IPATH_RCVHDRSZ_SET 0x4
945 /* The chip is present and valid for accesses */
946 #define IPATH_PRESENT 0x8
947 /* HT link0 is only 8 bits wide, ignore upper byte crc
949 #define IPATH_8BIT_IN_HT0 0x10
950 /* HT link1 is only 8 bits wide, ignore upper byte crc
952 #define IPATH_8BIT_IN_HT1 0x20
953 /* The link is down */
954 #define IPATH_LINKDOWN 0x40
955 /* The link level is up (0x11) */
956 #define IPATH_LINKINIT 0x80
957 /* The link is in the armed (0x21) state */
958 #define IPATH_LINKARMED 0x100
959 /* The link is in the active (0x31) state */
960 #define IPATH_LINKACTIVE 0x200
961 /* link current state is unknown */
962 #define IPATH_LINKUNK 0x400
963 /* Write combining flush needed for PIO */
964 #define IPATH_PIO_FLUSH_WC 0x1000
965 /* DMA Receive tail pointer */
966 #define IPATH_NODMA_RTAIL 0x2000
967 /* no IB cable, or no device on IB cable */
968 #define IPATH_NOCABLE 0x4000
969 /* Supports port zero per packet receive interrupts via
971 #define IPATH_GPIO_INTR 0x8000
972 /* uses the coded 4byte TID, not 8 byte */
973 #define IPATH_4BYTE_TID 0x10000
974 /* packet/word counters are 32 bit, else those 4 counters
976 #define IPATH_32BITCOUNTERS 0x20000
977 /* Interrupt register is 64 bits */
978 #define IPATH_INTREG_64 0x40000
979 /* can miss port0 rx interrupts */
980 #define IPATH_DISABLED 0x80000 /* administratively disabled */
981 /* Use GPIO interrupts for new counters */
982 #define IPATH_GPIO_ERRINTRS 0x100000
983 #define IPATH_SWAP_PIOBUFS 0x200000
984 /* Supports Send DMA */
985 #define IPATH_HAS_SEND_DMA 0x400000
986 /* Supports Send Count (not just word count) in PBC */
987 #define IPATH_HAS_PBC_CNT 0x800000
988 /* Suppress heartbeat, even if turning off loopback */
989 #define IPATH_NO_HRTBT 0x1000000
990 #define IPATH_HAS_THRESH_UPDATE 0x4000000
991 #define IPATH_HAS_MULT_IB_SPEED 0x8000000
992 #define IPATH_IB_AUTONEG_INPROG 0x10000000
993 #define IPATH_IB_AUTONEG_FAILED 0x20000000
994 /* Linkdown-disable intentionally, Do not attempt to bring up */
995 #define IPATH_IB_LINK_DISABLED 0x40000000
996 #define IPATH_IB_FORCE_NOTIFY 0x80000000 /* force notify on next ib change */
998 /* Bits in GPIO for the added interrupts */
999 #define IPATH_GPIO_PORT0_BIT 2
1000 #define IPATH_GPIO_RXUVL_BIT 3
1001 #define IPATH_GPIO_OVRUN_BIT 4
1002 #define IPATH_GPIO_LLI_BIT 5
1003 #define IPATH_GPIO_ERRINTR_MASK 0x38
1005 /* portdata flag bit offsets */
1006 /* waiting for a packet to arrive */
1007 #define IPATH_PORT_WAITING_RCV 2
1008 /* master has not finished initializing */
1009 #define IPATH_PORT_MASTER_UNINIT 4
1010 /* waiting for an urgent packet to arrive */
1011 #define IPATH_PORT_WAITING_URG 5
1013 /* free up any allocated data at closes */
1014 void ipath_free_data(struct ipath_portdata *dd);
1015 u32 __iomem *ipath_getpiobuf(struct ipath_devdata *, u32, u32 *);
1016 void ipath_chg_pioavailkernel(struct ipath_devdata *dd, unsigned start,
1017 unsigned len, int avail);
1018 void ipath_init_iba7220_funcs(struct ipath_devdata *);
1019 void ipath_init_iba6120_funcs(struct ipath_devdata *);
1020 void ipath_init_iba6110_funcs(struct ipath_devdata *);
1021 void ipath_get_eeprom_info(struct ipath_devdata *);
1022 int ipath_update_eeprom_log(struct ipath_devdata *dd);
1023 void ipath_inc_eeprom_err(struct ipath_devdata *dd, u32 eidx, u32 incr);
1024 u64 ipath_snap_cntr(struct ipath_devdata *, ipath_creg);
1025 void ipath_disarm_senderrbufs(struct ipath_devdata *);
1026 void ipath_force_pio_avail_update(struct ipath_devdata *);
1027 void signal_ib_event(struct ipath_devdata *dd, enum ib_event_type ev);
1030 * Set LED override, only the two LSBs have "public" meaning, but
1031 * any non-zero value substitutes them for the Link and LinkTrain
1034 #define IPATH_LED_PHYS 1 /* Physical (linktraining) GREEN LED */
1035 #define IPATH_LED_LOG 2 /* Logical (link) YELLOW LED */
1036 void ipath_set_led_override(struct ipath_devdata *dd, unsigned int val);
1038 /* send dma routines */
1039 int setup_sdma(struct ipath_devdata *);
1040 void teardown_sdma(struct ipath_devdata *);
1041 void ipath_restart_sdma(struct ipath_devdata *);
1042 void ipath_sdma_intr(struct ipath_devdata *);
1043 int ipath_sdma_verbs_send(struct ipath_devdata *, struct ipath_sge_state *,
1044 u32, struct ipath_verbs_txreq *);
1045 /* ipath_sdma_lock should be locked before calling this. */
1046 int ipath_sdma_make_progress(struct ipath_devdata *dd);
1048 /* must be called under ipath_sdma_lock */
1049 static inline u16 ipath_sdma_descq_freecnt(const struct ipath_devdata *dd)
1051 return dd->ipath_sdma_descq_cnt -
1052 (dd->ipath_sdma_descq_added - dd->ipath_sdma_descq_removed) -
1053 1 - dd->ipath_sdma_desc_nreserved;
1056 static inline void ipath_sdma_desc_reserve(struct ipath_devdata *dd, u16 cnt)
1058 dd->ipath_sdma_desc_nreserved += cnt;
1061 static inline void ipath_sdma_desc_unreserve(struct ipath_devdata *dd, u16 cnt)
1063 dd->ipath_sdma_desc_nreserved -= cnt;
1067 * number of words used for protocol header if not set by ipath_userinit();
1069 #define IPATH_DFLT_RCVHDRSIZE 9
1071 int ipath_get_user_pages(unsigned long, size_t, struct page **);
1072 void ipath_release_user_pages(struct page **, size_t);
1073 void ipath_release_user_pages_on_close(struct page **, size_t);
1074 int ipath_eeprom_read(struct ipath_devdata *, u8, void *, int);
1075 int ipath_eeprom_write(struct ipath_devdata *, u8, const void *, int);
1076 int ipath_tempsense_read(struct ipath_devdata *, u8 regnum);
1077 int ipath_tempsense_write(struct ipath_devdata *, u8 regnum, u8 data);
1079 /* these are used for the registers that vary with port */
1080 void ipath_write_kreg_port(const struct ipath_devdata *, ipath_kreg,
1084 * We could have a single register get/put routine, that takes a group type,
1085 * but this is somewhat clearer and cleaner. It also gives us some error
1086 * checking. 64 bit register reads should always work, but are inefficient
1087 * on opteron (the northbridge always generates 2 separate HT 32 bit reads),
1088 * so we use kreg32 wherever possible. User register and counter register
1089 * reads are always 32 bit reads, so only one form of those routines.
1093 * At the moment, none of the s-registers are writable, so no
1094 * ipath_write_sreg().
1098 * ipath_read_ureg32 - read 32-bit virtualized per-port register
1100 * @regno: register number
1101 * @port: port number
1103 * Return the contents of a register that is virtualized to be per port.
1104 * Returns -1 on errors (not distinguishable from valid contents at
1105 * runtime; we may add a separate error variable at some point).
1107 static inline u32 ipath_read_ureg32(const struct ipath_devdata *dd,
1108 ipath_ureg regno, int port)
1110 if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
1113 return readl(regno + (u64 __iomem *)
1114 (dd->ipath_uregbase +
1115 (char __iomem *)dd->ipath_kregbase +
1116 dd->ipath_ureg_align * port));
1120 * ipath_write_ureg - write 32-bit virtualized per-port register
1122 * @regno: register number
1126 * Write the contents of a register that is virtualized to be per port.
1128 static inline void ipath_write_ureg(const struct ipath_devdata *dd,
1129 ipath_ureg regno, u64 value, int port)
1131 u64 __iomem *ubase = (u64 __iomem *)
1132 (dd->ipath_uregbase + (char __iomem *) dd->ipath_kregbase +
1133 dd->ipath_ureg_align * port);
1134 if (dd->ipath_kregbase)
1135 writeq(value, &ubase[regno]);
1138 static inline u32 ipath_read_kreg32(const struct ipath_devdata *dd,
1141 if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
1143 return readl((u32 __iomem *) & dd->ipath_kregbase[regno]);
1146 static inline u64 ipath_read_kreg64(const struct ipath_devdata *dd,
1149 if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
1152 return readq(&dd->ipath_kregbase[regno]);
1155 static inline void ipath_write_kreg(const struct ipath_devdata *dd,
1156 ipath_kreg regno, u64 value)
1158 if (dd->ipath_kregbase)
1159 writeq(value, &dd->ipath_kregbase[regno]);
1162 static inline u64 ipath_read_creg(const struct ipath_devdata *dd,
1165 if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
1168 return readq(regno + (u64 __iomem *)
1169 (dd->ipath_cregbase +
1170 (char __iomem *)dd->ipath_kregbase));
1173 static inline u32 ipath_read_creg32(const struct ipath_devdata *dd,
1176 if (!dd->ipath_kregbase || !(dd->ipath_flags & IPATH_PRESENT))
1178 return readl(regno + (u64 __iomem *)
1179 (dd->ipath_cregbase +
1180 (char __iomem *)dd->ipath_kregbase));
1183 static inline void ipath_write_creg(const struct ipath_devdata *dd,
1184 ipath_creg regno, u64 value)
1186 if (dd->ipath_kregbase)
1187 writeq(value, regno + (u64 __iomem *)
1188 (dd->ipath_cregbase +
1189 (char __iomem *)dd->ipath_kregbase));
1192 static inline void ipath_clear_rcvhdrtail(const struct ipath_portdata *pd)
1194 *((u64 *) pd->port_rcvhdrtail_kvaddr) = 0ULL;
1197 static inline u32 ipath_get_rcvhdrtail(const struct ipath_portdata *pd)
1199 return (u32) le64_to_cpu(*((volatile __le64 *)
1200 pd->port_rcvhdrtail_kvaddr));
1203 static inline u32 ipath_get_hdrqtail(const struct ipath_portdata *pd)
1205 const struct ipath_devdata *dd = pd->port_dd;
1208 if (dd->ipath_flags & IPATH_NODMA_RTAIL) {
1212 rhf_addr = (__le32 *) pd->port_rcvhdrq +
1213 pd->port_head + dd->ipath_rhf_offset;
1214 seq = ipath_hdrget_seq(rhf_addr);
1215 hdrqtail = pd->port_head;
1216 if (seq == pd->port_seq_cnt)
1219 hdrqtail = ipath_get_rcvhdrtail(pd);
1224 static inline u64 ipath_read_ireg(const struct ipath_devdata *dd, ipath_kreg r)
1226 return (dd->ipath_flags & IPATH_INTREG_64) ?
1227 ipath_read_kreg64(dd, r) : ipath_read_kreg32(dd, r);
1231 * from contents of IBCStatus (or a saved copy), return linkstate
1232 * Report ACTIVE_DEFER as ACTIVE, because we treat them the same
1233 * everywhere, anyway (and should be, for almost all purposes).
1235 static inline u32 ipath_ib_linkstate(struct ipath_devdata *dd, u64 ibcs)
1237 u32 state = (u32)(ibcs >> dd->ibcs_ls_shift) &
1238 INFINIPATH_IBCS_LINKSTATE_MASK;
1239 if (state == INFINIPATH_IBCS_L_STATE_ACT_DEFER)
1240 state = INFINIPATH_IBCS_L_STATE_ACTIVE;
1244 /* from contents of IBCStatus (or a saved copy), return linktrainingstate */
1245 static inline u32 ipath_ib_linktrstate(struct ipath_devdata *dd, u64 ibcs)
1247 return (u32)(ibcs >> INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) &
1252 * from contents of IBCStatus (or a saved copy), return logical link state
1253 * combination of link state and linktraining state (down, active, init,
1256 static inline u32 ipath_ib_state(struct ipath_devdata *dd, u64 ibcs)
1259 ibs = (u32)(ibcs >> INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) &
1262 (INFINIPATH_IBCS_LINKSTATE_MASK << dd->ibcs_ls_shift));
1270 struct device_driver;
1272 extern const char ib_ipath_version[];
1274 extern struct attribute_group *ipath_driver_attr_groups[];
1276 int ipath_device_create_group(struct device *, struct ipath_devdata *);
1277 void ipath_device_remove_group(struct device *, struct ipath_devdata *);
1278 int ipath_expose_reset(struct device *);
1280 int ipath_init_ipathfs(void);
1281 void ipath_exit_ipathfs(void);
1282 int ipathfs_add_device(struct ipath_devdata *);
1283 int ipathfs_remove_device(struct ipath_devdata *);
1286 * dma_addr wrappers - all 0's invalid for hw
1288 dma_addr_t ipath_map_page(struct pci_dev *, struct page *, unsigned long,
1290 dma_addr_t ipath_map_single(struct pci_dev *, void *, size_t, int);
1291 const char *ipath_get_unit_name(int unit);
1294 * Flush write combining store buffers (if present) and perform a write
1297 #if defined(CONFIG_X86_64)
1298 #define ipath_flush_wc() asm volatile("sfence" ::: "memory")
1300 #define ipath_flush_wc() wmb()
1303 extern unsigned ipath_debug; /* debugging bit mask */
1304 extern unsigned ipath_linkrecovery;
1305 extern unsigned ipath_mtu4096;
1306 extern struct mutex ipath_mutex;
1308 #define IPATH_DRV_NAME "ib_ipath"
1309 #define IPATH_MAJOR 233
1310 #define IPATH_USER_MINOR_BASE 0
1311 #define IPATH_DIAGPKT_MINOR 127
1312 #define IPATH_DIAG_MINOR_BASE 129
1313 #define IPATH_NMINORS 255
1315 #define ipath_dev_err(dd,fmt,...) \
1317 const struct ipath_devdata *__dd = (dd); \
1319 dev_err(&__dd->pcidev->dev, "%s: " fmt, \
1320 ipath_get_unit_name(__dd->ipath_unit), \
1323 printk(KERN_ERR IPATH_DRV_NAME ": %s: " fmt, \
1324 ipath_get_unit_name(__dd->ipath_unit), \
1328 #if _IPATH_DEBUGGING
1330 # define __IPATH_DBG_WHICH(which,fmt,...) \
1332 if (unlikely(ipath_debug & (which))) \
1333 printk(KERN_DEBUG IPATH_DRV_NAME ": %s: " fmt, \
1334 __func__,##__VA_ARGS__); \
1337 # define ipath_dbg(fmt,...) \
1338 __IPATH_DBG_WHICH(__IPATH_DBG,fmt,##__VA_ARGS__)
1339 # define ipath_cdbg(which,fmt,...) \
1340 __IPATH_DBG_WHICH(__IPATH_##which##DBG,fmt,##__VA_ARGS__)
1342 #else /* ! _IPATH_DEBUGGING */
1344 # define ipath_dbg(fmt,...)
1345 # define ipath_cdbg(which,fmt,...)
1347 #endif /* _IPATH_DEBUGGING */
1350 * this is used for formatting hw error messages...
1352 struct ipath_hwerror_msgs {
1357 #define INFINIPATH_HWE_MSG(a, b) { .mask = INFINIPATH_HWE_##a, .msg = b }
1359 /* in ipath_intr.c... */
1360 void ipath_format_hwerrors(u64 hwerrs,
1361 const struct ipath_hwerror_msgs *hwerrmsgs,
1363 char *msg, size_t lmsg);
1365 #endif /* _IPATH_KERNEL_H */