4bd39c8af80fe44503dd838d47402f3386e45dd7
[linux-2.6.git] / drivers / infiniband / hw / ipath / ipath_iba6110.c
1 /*
2  * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
3  * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
4  *
5  * This software is available to you under a choice of one of two
6  * licenses.  You may choose to be licensed under the terms of the GNU
7  * General Public License (GPL) Version 2, available from the file
8  * COPYING in the main directory of this source tree, or the
9  * OpenIB.org BSD license below:
10  *
11  *     Redistribution and use in source and binary forms, with or
12  *     without modification, are permitted provided that the following
13  *     conditions are met:
14  *
15  *      - Redistributions of source code must retain the above
16  *        copyright notice, this list of conditions and the following
17  *        disclaimer.
18  *
19  *      - Redistributions in binary form must reproduce the above
20  *        copyright notice, this list of conditions and the following
21  *        disclaimer in the documentation and/or other materials
22  *        provided with the distribution.
23  *
24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31  * SOFTWARE.
32  */
33
34 /*
35  * This file contains all of the code that is specific to the InfiniPath
36  * HT chip.
37  */
38
39 #include <linux/vmalloc.h>
40 #include <linux/pci.h>
41 #include <linux/delay.h>
42 #include <linux/htirq.h>
43 #include <rdma/ib_verbs.h>
44
45 #include "ipath_kernel.h"
46 #include "ipath_registers.h"
47
48 static void ipath_setup_ht_setextled(struct ipath_devdata *, u64, u64);
49
50
51 /*
52  * This lists the InfiniPath registers, in the actual chip layout.
53  * This structure should never be directly accessed.
54  *
55  * The names are in InterCap form because they're taken straight from
56  * the chip specification.  Since they're only used in this file, they
57  * don't pollute the rest of the source.
58 */
59
60 struct _infinipath_do_not_use_kernel_regs {
61         unsigned long long Revision;
62         unsigned long long Control;
63         unsigned long long PageAlign;
64         unsigned long long PortCnt;
65         unsigned long long DebugPortSelect;
66         unsigned long long DebugPort;
67         unsigned long long SendRegBase;
68         unsigned long long UserRegBase;
69         unsigned long long CounterRegBase;
70         unsigned long long Scratch;
71         unsigned long long ReservedMisc1;
72         unsigned long long InterruptConfig;
73         unsigned long long IntBlocked;
74         unsigned long long IntMask;
75         unsigned long long IntStatus;
76         unsigned long long IntClear;
77         unsigned long long ErrorMask;
78         unsigned long long ErrorStatus;
79         unsigned long long ErrorClear;
80         unsigned long long HwErrMask;
81         unsigned long long HwErrStatus;
82         unsigned long long HwErrClear;
83         unsigned long long HwDiagCtrl;
84         unsigned long long MDIO;
85         unsigned long long IBCStatus;
86         unsigned long long IBCCtrl;
87         unsigned long long ExtStatus;
88         unsigned long long ExtCtrl;
89         unsigned long long GPIOOut;
90         unsigned long long GPIOMask;
91         unsigned long long GPIOStatus;
92         unsigned long long GPIOClear;
93         unsigned long long RcvCtrl;
94         unsigned long long RcvBTHQP;
95         unsigned long long RcvHdrSize;
96         unsigned long long RcvHdrCnt;
97         unsigned long long RcvHdrEntSize;
98         unsigned long long RcvTIDBase;
99         unsigned long long RcvTIDCnt;
100         unsigned long long RcvEgrBase;
101         unsigned long long RcvEgrCnt;
102         unsigned long long RcvBufBase;
103         unsigned long long RcvBufSize;
104         unsigned long long RxIntMemBase;
105         unsigned long long RxIntMemSize;
106         unsigned long long RcvPartitionKey;
107         unsigned long long ReservedRcv[10];
108         unsigned long long SendCtrl;
109         unsigned long long SendPIOBufBase;
110         unsigned long long SendPIOSize;
111         unsigned long long SendPIOBufCnt;
112         unsigned long long SendPIOAvailAddr;
113         unsigned long long TxIntMemBase;
114         unsigned long long TxIntMemSize;
115         unsigned long long ReservedSend[9];
116         unsigned long long SendBufferError;
117         unsigned long long SendBufferErrorCONT1;
118         unsigned long long SendBufferErrorCONT2;
119         unsigned long long SendBufferErrorCONT3;
120         unsigned long long ReservedSBE[4];
121         unsigned long long RcvHdrAddr0;
122         unsigned long long RcvHdrAddr1;
123         unsigned long long RcvHdrAddr2;
124         unsigned long long RcvHdrAddr3;
125         unsigned long long RcvHdrAddr4;
126         unsigned long long RcvHdrAddr5;
127         unsigned long long RcvHdrAddr6;
128         unsigned long long RcvHdrAddr7;
129         unsigned long long RcvHdrAddr8;
130         unsigned long long ReservedRHA[7];
131         unsigned long long RcvHdrTailAddr0;
132         unsigned long long RcvHdrTailAddr1;
133         unsigned long long RcvHdrTailAddr2;
134         unsigned long long RcvHdrTailAddr3;
135         unsigned long long RcvHdrTailAddr4;
136         unsigned long long RcvHdrTailAddr5;
137         unsigned long long RcvHdrTailAddr6;
138         unsigned long long RcvHdrTailAddr7;
139         unsigned long long RcvHdrTailAddr8;
140         unsigned long long ReservedRHTA[7];
141         unsigned long long Sync;        /* Software only */
142         unsigned long long Dump;        /* Software only */
143         unsigned long long SimVer;      /* Software only */
144         unsigned long long ReservedSW[5];
145         unsigned long long SerdesConfig0;
146         unsigned long long SerdesConfig1;
147         unsigned long long SerdesStatus;
148         unsigned long long XGXSConfig;
149         unsigned long long ReservedSW2[4];
150 };
151
152 struct _infinipath_do_not_use_counters {
153         __u64 LBIntCnt;
154         __u64 LBFlowStallCnt;
155         __u64 Reserved1;
156         __u64 TxUnsupVLErrCnt;
157         __u64 TxDataPktCnt;
158         __u64 TxFlowPktCnt;
159         __u64 TxDwordCnt;
160         __u64 TxLenErrCnt;
161         __u64 TxMaxMinLenErrCnt;
162         __u64 TxUnderrunCnt;
163         __u64 TxFlowStallCnt;
164         __u64 TxDroppedPktCnt;
165         __u64 RxDroppedPktCnt;
166         __u64 RxDataPktCnt;
167         __u64 RxFlowPktCnt;
168         __u64 RxDwordCnt;
169         __u64 RxLenErrCnt;
170         __u64 RxMaxMinLenErrCnt;
171         __u64 RxICRCErrCnt;
172         __u64 RxVCRCErrCnt;
173         __u64 RxFlowCtrlErrCnt;
174         __u64 RxBadFormatCnt;
175         __u64 RxLinkProblemCnt;
176         __u64 RxEBPCnt;
177         __u64 RxLPCRCErrCnt;
178         __u64 RxBufOvflCnt;
179         __u64 RxTIDFullErrCnt;
180         __u64 RxTIDValidErrCnt;
181         __u64 RxPKeyMismatchCnt;
182         __u64 RxP0HdrEgrOvflCnt;
183         __u64 RxP1HdrEgrOvflCnt;
184         __u64 RxP2HdrEgrOvflCnt;
185         __u64 RxP3HdrEgrOvflCnt;
186         __u64 RxP4HdrEgrOvflCnt;
187         __u64 RxP5HdrEgrOvflCnt;
188         __u64 RxP6HdrEgrOvflCnt;
189         __u64 RxP7HdrEgrOvflCnt;
190         __u64 RxP8HdrEgrOvflCnt;
191         __u64 Reserved6;
192         __u64 Reserved7;
193         __u64 IBStatusChangeCnt;
194         __u64 IBLinkErrRecoveryCnt;
195         __u64 IBLinkDownedCnt;
196         __u64 IBSymbolErrCnt;
197 };
198
199 #define IPATH_KREG_OFFSET(field) (offsetof( \
200         struct _infinipath_do_not_use_kernel_regs, field) / sizeof(u64))
201 #define IPATH_CREG_OFFSET(field) (offsetof( \
202         struct _infinipath_do_not_use_counters, field) / sizeof(u64))
203
204 static const struct ipath_kregs ipath_ht_kregs = {
205         .kr_control = IPATH_KREG_OFFSET(Control),
206         .kr_counterregbase = IPATH_KREG_OFFSET(CounterRegBase),
207         .kr_debugport = IPATH_KREG_OFFSET(DebugPort),
208         .kr_debugportselect = IPATH_KREG_OFFSET(DebugPortSelect),
209         .kr_errorclear = IPATH_KREG_OFFSET(ErrorClear),
210         .kr_errormask = IPATH_KREG_OFFSET(ErrorMask),
211         .kr_errorstatus = IPATH_KREG_OFFSET(ErrorStatus),
212         .kr_extctrl = IPATH_KREG_OFFSET(ExtCtrl),
213         .kr_extstatus = IPATH_KREG_OFFSET(ExtStatus),
214         .kr_gpio_clear = IPATH_KREG_OFFSET(GPIOClear),
215         .kr_gpio_mask = IPATH_KREG_OFFSET(GPIOMask),
216         .kr_gpio_out = IPATH_KREG_OFFSET(GPIOOut),
217         .kr_gpio_status = IPATH_KREG_OFFSET(GPIOStatus),
218         .kr_hwdiagctrl = IPATH_KREG_OFFSET(HwDiagCtrl),
219         .kr_hwerrclear = IPATH_KREG_OFFSET(HwErrClear),
220         .kr_hwerrmask = IPATH_KREG_OFFSET(HwErrMask),
221         .kr_hwerrstatus = IPATH_KREG_OFFSET(HwErrStatus),
222         .kr_ibcctrl = IPATH_KREG_OFFSET(IBCCtrl),
223         .kr_ibcstatus = IPATH_KREG_OFFSET(IBCStatus),
224         .kr_intblocked = IPATH_KREG_OFFSET(IntBlocked),
225         .kr_intclear = IPATH_KREG_OFFSET(IntClear),
226         .kr_interruptconfig = IPATH_KREG_OFFSET(InterruptConfig),
227         .kr_intmask = IPATH_KREG_OFFSET(IntMask),
228         .kr_intstatus = IPATH_KREG_OFFSET(IntStatus),
229         .kr_mdio = IPATH_KREG_OFFSET(MDIO),
230         .kr_pagealign = IPATH_KREG_OFFSET(PageAlign),
231         .kr_partitionkey = IPATH_KREG_OFFSET(RcvPartitionKey),
232         .kr_portcnt = IPATH_KREG_OFFSET(PortCnt),
233         .kr_rcvbthqp = IPATH_KREG_OFFSET(RcvBTHQP),
234         .kr_rcvbufbase = IPATH_KREG_OFFSET(RcvBufBase),
235         .kr_rcvbufsize = IPATH_KREG_OFFSET(RcvBufSize),
236         .kr_rcvctrl = IPATH_KREG_OFFSET(RcvCtrl),
237         .kr_rcvegrbase = IPATH_KREG_OFFSET(RcvEgrBase),
238         .kr_rcvegrcnt = IPATH_KREG_OFFSET(RcvEgrCnt),
239         .kr_rcvhdrcnt = IPATH_KREG_OFFSET(RcvHdrCnt),
240         .kr_rcvhdrentsize = IPATH_KREG_OFFSET(RcvHdrEntSize),
241         .kr_rcvhdrsize = IPATH_KREG_OFFSET(RcvHdrSize),
242         .kr_rcvintmembase = IPATH_KREG_OFFSET(RxIntMemBase),
243         .kr_rcvintmemsize = IPATH_KREG_OFFSET(RxIntMemSize),
244         .kr_rcvtidbase = IPATH_KREG_OFFSET(RcvTIDBase),
245         .kr_rcvtidcnt = IPATH_KREG_OFFSET(RcvTIDCnt),
246         .kr_revision = IPATH_KREG_OFFSET(Revision),
247         .kr_scratch = IPATH_KREG_OFFSET(Scratch),
248         .kr_sendbuffererror = IPATH_KREG_OFFSET(SendBufferError),
249         .kr_sendctrl = IPATH_KREG_OFFSET(SendCtrl),
250         .kr_sendpioavailaddr = IPATH_KREG_OFFSET(SendPIOAvailAddr),
251         .kr_sendpiobufbase = IPATH_KREG_OFFSET(SendPIOBufBase),
252         .kr_sendpiobufcnt = IPATH_KREG_OFFSET(SendPIOBufCnt),
253         .kr_sendpiosize = IPATH_KREG_OFFSET(SendPIOSize),
254         .kr_sendregbase = IPATH_KREG_OFFSET(SendRegBase),
255         .kr_txintmembase = IPATH_KREG_OFFSET(TxIntMemBase),
256         .kr_txintmemsize = IPATH_KREG_OFFSET(TxIntMemSize),
257         .kr_userregbase = IPATH_KREG_OFFSET(UserRegBase),
258         .kr_serdesconfig0 = IPATH_KREG_OFFSET(SerdesConfig0),
259         .kr_serdesconfig1 = IPATH_KREG_OFFSET(SerdesConfig1),
260         .kr_serdesstatus = IPATH_KREG_OFFSET(SerdesStatus),
261         .kr_xgxsconfig = IPATH_KREG_OFFSET(XGXSConfig),
262         /*
263          * These should not be used directly via ipath_write_kreg64(),
264          * use them with ipath_write_kreg64_port(),
265          */
266         .kr_rcvhdraddr = IPATH_KREG_OFFSET(RcvHdrAddr0),
267         .kr_rcvhdrtailaddr = IPATH_KREG_OFFSET(RcvHdrTailAddr0)
268 };
269
270 static const struct ipath_cregs ipath_ht_cregs = {
271         .cr_badformatcnt = IPATH_CREG_OFFSET(RxBadFormatCnt),
272         .cr_erricrccnt = IPATH_CREG_OFFSET(RxICRCErrCnt),
273         .cr_errlinkcnt = IPATH_CREG_OFFSET(RxLinkProblemCnt),
274         .cr_errlpcrccnt = IPATH_CREG_OFFSET(RxLPCRCErrCnt),
275         .cr_errpkey = IPATH_CREG_OFFSET(RxPKeyMismatchCnt),
276         .cr_errrcvflowctrlcnt = IPATH_CREG_OFFSET(RxFlowCtrlErrCnt),
277         .cr_err_rlencnt = IPATH_CREG_OFFSET(RxLenErrCnt),
278         .cr_errslencnt = IPATH_CREG_OFFSET(TxLenErrCnt),
279         .cr_errtidfull = IPATH_CREG_OFFSET(RxTIDFullErrCnt),
280         .cr_errtidvalid = IPATH_CREG_OFFSET(RxTIDValidErrCnt),
281         .cr_errvcrccnt = IPATH_CREG_OFFSET(RxVCRCErrCnt),
282         .cr_ibstatuschange = IPATH_CREG_OFFSET(IBStatusChangeCnt),
283         /* calc from Reg_CounterRegBase + offset */
284         .cr_intcnt = IPATH_CREG_OFFSET(LBIntCnt),
285         .cr_invalidrlencnt = IPATH_CREG_OFFSET(RxMaxMinLenErrCnt),
286         .cr_invalidslencnt = IPATH_CREG_OFFSET(TxMaxMinLenErrCnt),
287         .cr_lbflowstallcnt = IPATH_CREG_OFFSET(LBFlowStallCnt),
288         .cr_pktrcvcnt = IPATH_CREG_OFFSET(RxDataPktCnt),
289         .cr_pktrcvflowctrlcnt = IPATH_CREG_OFFSET(RxFlowPktCnt),
290         .cr_pktsendcnt = IPATH_CREG_OFFSET(TxDataPktCnt),
291         .cr_pktsendflowcnt = IPATH_CREG_OFFSET(TxFlowPktCnt),
292         .cr_portovflcnt = IPATH_CREG_OFFSET(RxP0HdrEgrOvflCnt),
293         .cr_rcvebpcnt = IPATH_CREG_OFFSET(RxEBPCnt),
294         .cr_rcvovflcnt = IPATH_CREG_OFFSET(RxBufOvflCnt),
295         .cr_senddropped = IPATH_CREG_OFFSET(TxDroppedPktCnt),
296         .cr_sendstallcnt = IPATH_CREG_OFFSET(TxFlowStallCnt),
297         .cr_sendunderruncnt = IPATH_CREG_OFFSET(TxUnderrunCnt),
298         .cr_wordrcvcnt = IPATH_CREG_OFFSET(RxDwordCnt),
299         .cr_wordsendcnt = IPATH_CREG_OFFSET(TxDwordCnt),
300         .cr_unsupvlcnt = IPATH_CREG_OFFSET(TxUnsupVLErrCnt),
301         .cr_rxdroppktcnt = IPATH_CREG_OFFSET(RxDroppedPktCnt),
302         .cr_iblinkerrrecovcnt = IPATH_CREG_OFFSET(IBLinkErrRecoveryCnt),
303         .cr_iblinkdowncnt = IPATH_CREG_OFFSET(IBLinkDownedCnt),
304         .cr_ibsymbolerrcnt = IPATH_CREG_OFFSET(IBSymbolErrCnt)
305 };
306
307 /* kr_intstatus, kr_intclear, kr_intmask bits */
308 #define INFINIPATH_I_RCVURG_MASK ((1U<<9)-1)
309 #define INFINIPATH_I_RCVURG_SHIFT 0
310 #define INFINIPATH_I_RCVAVAIL_MASK ((1U<<9)-1)
311 #define INFINIPATH_I_RCVAVAIL_SHIFT 12
312
313 /* kr_hwerrclear, kr_hwerrmask, kr_hwerrstatus, bits */
314 #define INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT 0
315 #define INFINIPATH_HWE_HTCMEMPARITYERR_MASK 0x3FFFFFULL
316 #define INFINIPATH_HWE_HTCLNKABYTE0CRCERR   0x0000000000800000ULL
317 #define INFINIPATH_HWE_HTCLNKABYTE1CRCERR   0x0000000001000000ULL
318 #define INFINIPATH_HWE_HTCLNKBBYTE0CRCERR   0x0000000002000000ULL
319 #define INFINIPATH_HWE_HTCLNKBBYTE1CRCERR   0x0000000004000000ULL
320 #define INFINIPATH_HWE_HTCMISCERR4          0x0000000008000000ULL
321 #define INFINIPATH_HWE_HTCMISCERR5          0x0000000010000000ULL
322 #define INFINIPATH_HWE_HTCMISCERR6          0x0000000020000000ULL
323 #define INFINIPATH_HWE_HTCMISCERR7          0x0000000040000000ULL
324 #define INFINIPATH_HWE_HTCBUSTREQPARITYERR  0x0000000080000000ULL
325 #define INFINIPATH_HWE_HTCBUSTRESPPARITYERR 0x0000000100000000ULL
326 #define INFINIPATH_HWE_HTCBUSIREQPARITYERR  0x0000000200000000ULL
327 #define INFINIPATH_HWE_COREPLL_FBSLIP       0x0080000000000000ULL
328 #define INFINIPATH_HWE_COREPLL_RFSLIP       0x0100000000000000ULL
329 #define INFINIPATH_HWE_HTBPLL_FBSLIP        0x0200000000000000ULL
330 #define INFINIPATH_HWE_HTBPLL_RFSLIP        0x0400000000000000ULL
331 #define INFINIPATH_HWE_HTAPLL_FBSLIP        0x0800000000000000ULL
332 #define INFINIPATH_HWE_HTAPLL_RFSLIP        0x1000000000000000ULL
333 #define INFINIPATH_HWE_SERDESPLLFAILED      0x2000000000000000ULL
334
335 #define IBA6110_IBCS_LINKTRAININGSTATE_MASK 0xf
336 #define IBA6110_IBCS_LINKSTATE_SHIFT 4
337
338 /* kr_extstatus bits */
339 #define INFINIPATH_EXTS_FREQSEL 0x2
340 #define INFINIPATH_EXTS_SERDESSEL 0x4
341 #define INFINIPATH_EXTS_MEMBIST_ENDTEST     0x0000000000004000
342 #define INFINIPATH_EXTS_MEMBIST_CORRECT     0x0000000000008000
343
344
345 /* TID entries (memory), HT-only */
346 #define INFINIPATH_RT_ADDR_MASK 0xFFFFFFFFFFULL /* 40 bits valid */
347 #define INFINIPATH_RT_VALID 0x8000000000000000ULL
348 #define INFINIPATH_RT_ADDR_SHIFT 0
349 #define INFINIPATH_RT_BUFSIZE_MASK 0x3FFFULL
350 #define INFINIPATH_RT_BUFSIZE_SHIFT 48
351
352 #define INFINIPATH_R_INTRAVAIL_SHIFT 16
353 #define INFINIPATH_R_TAILUPD_SHIFT 31
354
355 /* kr_xgxsconfig bits */
356 #define INFINIPATH_XGXS_RESET          0x7ULL
357
358 /*
359  * masks and bits that are different in different chips, or present only
360  * in one
361  */
362 static const ipath_err_t infinipath_hwe_htcmemparityerr_mask =
363     INFINIPATH_HWE_HTCMEMPARITYERR_MASK;
364 static const ipath_err_t infinipath_hwe_htcmemparityerr_shift =
365     INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT;
366
367 static const ipath_err_t infinipath_hwe_htclnkabyte0crcerr =
368     INFINIPATH_HWE_HTCLNKABYTE0CRCERR;
369 static const ipath_err_t infinipath_hwe_htclnkabyte1crcerr =
370     INFINIPATH_HWE_HTCLNKABYTE1CRCERR;
371 static const ipath_err_t infinipath_hwe_htclnkbbyte0crcerr =
372     INFINIPATH_HWE_HTCLNKBBYTE0CRCERR;
373 static const ipath_err_t infinipath_hwe_htclnkbbyte1crcerr =
374     INFINIPATH_HWE_HTCLNKBBYTE1CRCERR;
375
376 #define _IPATH_GPIO_SDA_NUM 1
377 #define _IPATH_GPIO_SCL_NUM 0
378
379 #define IPATH_GPIO_SDA \
380         (1ULL << (_IPATH_GPIO_SDA_NUM+INFINIPATH_EXTC_GPIOOE_SHIFT))
381 #define IPATH_GPIO_SCL \
382         (1ULL << (_IPATH_GPIO_SCL_NUM+INFINIPATH_EXTC_GPIOOE_SHIFT))
383
384 /* keep the code below somewhat more readonable; not used elsewhere */
385 #define _IPATH_HTLINK0_CRCBITS (infinipath_hwe_htclnkabyte0crcerr |     \
386                                 infinipath_hwe_htclnkabyte1crcerr)
387 #define _IPATH_HTLINK1_CRCBITS (infinipath_hwe_htclnkbbyte0crcerr |     \
388                                 infinipath_hwe_htclnkbbyte1crcerr)
389 #define _IPATH_HTLANE0_CRCBITS (infinipath_hwe_htclnkabyte0crcerr |     \
390                                 infinipath_hwe_htclnkbbyte0crcerr)
391 #define _IPATH_HTLANE1_CRCBITS (infinipath_hwe_htclnkabyte1crcerr |     \
392                                 infinipath_hwe_htclnkbbyte1crcerr)
393
394 static void hwerr_crcbits(struct ipath_devdata *dd, ipath_err_t hwerrs,
395                           char *msg, size_t msgl)
396 {
397         char bitsmsg[64];
398         ipath_err_t crcbits = hwerrs &
399                 (_IPATH_HTLINK0_CRCBITS | _IPATH_HTLINK1_CRCBITS);
400         /* don't check if 8bit HT */
401         if (dd->ipath_flags & IPATH_8BIT_IN_HT0)
402                 crcbits &= ~infinipath_hwe_htclnkabyte1crcerr;
403         /* don't check if 8bit HT */
404         if (dd->ipath_flags & IPATH_8BIT_IN_HT1)
405                 crcbits &= ~infinipath_hwe_htclnkbbyte1crcerr;
406         /*
407          * we'll want to ignore link errors on link that is
408          * not in use, if any.  For now, complain about both
409          */
410         if (crcbits) {
411                 u16 ctrl0, ctrl1;
412                 snprintf(bitsmsg, sizeof bitsmsg,
413                          "[HT%s lane %s CRC (%llx); powercycle to completely clear]",
414                          !(crcbits & _IPATH_HTLINK1_CRCBITS) ?
415                          "0 (A)" : (!(crcbits & _IPATH_HTLINK0_CRCBITS)
416                                     ? "1 (B)" : "0+1 (A+B)"),
417                          !(crcbits & _IPATH_HTLANE1_CRCBITS) ? "0"
418                          : (!(crcbits & _IPATH_HTLANE0_CRCBITS) ? "1" :
419                             "0+1"), (unsigned long long) crcbits);
420                 strlcat(msg, bitsmsg, msgl);
421
422                 /*
423                  * print extra info for debugging.  slave/primary
424                  * config word 4, 8 (link control 0, 1)
425                  */
426
427                 if (pci_read_config_word(dd->pcidev,
428                                          dd->ipath_ht_slave_off + 0x4,
429                                          &ctrl0))
430                         dev_info(&dd->pcidev->dev, "Couldn't read "
431                                  "linkctrl0 of slave/primary "
432                                  "config block\n");
433                 else if (!(ctrl0 & 1 << 6))
434                         /* not if EOC bit set */
435                         ipath_dbg("HT linkctrl0 0x%x%s%s\n", ctrl0,
436                                   ((ctrl0 >> 8) & 7) ? " CRC" : "",
437                                   ((ctrl0 >> 4) & 1) ? "linkfail" :
438                                   "");
439                 if (pci_read_config_word(dd->pcidev,
440                                          dd->ipath_ht_slave_off + 0x8,
441                                          &ctrl1))
442                         dev_info(&dd->pcidev->dev, "Couldn't read "
443                                  "linkctrl1 of slave/primary "
444                                  "config block\n");
445                 else if (!(ctrl1 & 1 << 6))
446                         /* not if EOC bit set */
447                         ipath_dbg("HT linkctrl1 0x%x%s%s\n", ctrl1,
448                                   ((ctrl1 >> 8) & 7) ? " CRC" : "",
449                                   ((ctrl1 >> 4) & 1) ? "linkfail" :
450                                   "");
451
452                 /* disable until driver reloaded */
453                 dd->ipath_hwerrmask &= ~crcbits;
454                 ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask,
455                                  dd->ipath_hwerrmask);
456                 ipath_dbg("HT crc errs: %s\n", msg);
457         } else
458                 ipath_dbg("ignoring HT crc errors 0x%llx, "
459                           "not in use\n", (unsigned long long)
460                           (hwerrs & (_IPATH_HTLINK0_CRCBITS |
461                                      _IPATH_HTLINK1_CRCBITS)));
462 }
463
464 /* 6110 specific hardware errors... */
465 static const struct ipath_hwerror_msgs ipath_6110_hwerror_msgs[] = {
466         INFINIPATH_HWE_MSG(HTCBUSIREQPARITYERR, "HTC Ireq Parity"),
467         INFINIPATH_HWE_MSG(HTCBUSTREQPARITYERR, "HTC Treq Parity"),
468         INFINIPATH_HWE_MSG(HTCBUSTRESPPARITYERR, "HTC Tresp Parity"),
469         INFINIPATH_HWE_MSG(HTCMISCERR5, "HT core Misc5"),
470         INFINIPATH_HWE_MSG(HTCMISCERR6, "HT core Misc6"),
471         INFINIPATH_HWE_MSG(HTCMISCERR7, "HT core Misc7"),
472         INFINIPATH_HWE_MSG(RXDSYNCMEMPARITYERR, "Rx Dsync"),
473         INFINIPATH_HWE_MSG(SERDESPLLFAILED, "SerDes PLL"),
474 };
475
476 #define TXE_PIO_PARITY ((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF | \
477                         INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC) \
478                         << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT)
479 #define RXE_EAGER_PARITY (INFINIPATH_HWE_RXEMEMPARITYERR_EAGERTID \
480                           << INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT)
481
482 static void ipath_ht_txe_recover(struct ipath_devdata *dd)
483 {
484         ++ipath_stats.sps_txeparity;
485         dev_info(&dd->pcidev->dev,
486                 "Recovering from TXE PIO parity error\n");
487 }
488
489
490 /**
491  * ipath_ht_handle_hwerrors - display hardware errors.
492  * @dd: the infinipath device
493  * @msg: the output buffer
494  * @msgl: the size of the output buffer
495  *
496  * Use same msg buffer as regular errors to avoid excessive stack
497  * use.  Most hardware errors are catastrophic, but for right now,
498  * we'll print them and continue.  We reuse the same message buffer as
499  * ipath_handle_errors() to avoid excessive stack usage.
500  */
501 static void ipath_ht_handle_hwerrors(struct ipath_devdata *dd, char *msg,
502                                      size_t msgl)
503 {
504         ipath_err_t hwerrs;
505         u32 bits, ctrl;
506         int isfatal = 0;
507         char bitsmsg[64];
508         int log_idx;
509
510         hwerrs = ipath_read_kreg64(dd, dd->ipath_kregs->kr_hwerrstatus);
511
512         if (!hwerrs) {
513                 ipath_cdbg(VERBOSE, "Called but no hardware errors set\n");
514                 /*
515                  * better than printing cofusing messages
516                  * This seems to be related to clearing the crc error, or
517                  * the pll error during init.
518                  */
519                 goto bail;
520         } else if (hwerrs == -1LL) {
521                 ipath_dev_err(dd, "Read of hardware error status failed "
522                               "(all bits set); ignoring\n");
523                 goto bail;
524         }
525         ipath_stats.sps_hwerrs++;
526
527         /* Always clear the error status register, except MEMBISTFAIL,
528          * regardless of whether we continue or stop using the chip.
529          * We want that set so we know it failed, even across driver reload.
530          * We'll still ignore it in the hwerrmask.  We do this partly for
531          * diagnostics, but also for support */
532         ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear,
533                          hwerrs&~INFINIPATH_HWE_MEMBISTFAILED);
534
535         hwerrs &= dd->ipath_hwerrmask;
536
537         /* We log some errors to EEPROM, check if we have any of those. */
538         for (log_idx = 0; log_idx < IPATH_EEP_LOG_CNT; ++log_idx)
539                 if (hwerrs & dd->ipath_eep_st_masks[log_idx].hwerrs_to_log)
540                         ipath_inc_eeprom_err(dd, log_idx, 1);
541
542         /*
543          * make sure we get this much out, unless told to be quiet,
544          * it's a parity error we may recover from,
545          * or it's occurred within the last 5 seconds
546          */
547         if ((hwerrs & ~(dd->ipath_lasthwerror | TXE_PIO_PARITY |
548                 RXE_EAGER_PARITY)) ||
549                 (ipath_debug & __IPATH_VERBDBG))
550                 dev_info(&dd->pcidev->dev, "Hardware error: hwerr=0x%llx "
551                          "(cleared)\n", (unsigned long long) hwerrs);
552         dd->ipath_lasthwerror |= hwerrs;
553
554         if (hwerrs & ~dd->ipath_hwe_bitsextant)
555                 ipath_dev_err(dd, "hwerror interrupt with unknown errors "
556                               "%llx set\n", (unsigned long long)
557                               (hwerrs & ~dd->ipath_hwe_bitsextant));
558
559         ctrl = ipath_read_kreg32(dd, dd->ipath_kregs->kr_control);
560         if ((ctrl & INFINIPATH_C_FREEZEMODE) && !ipath_diag_inuse) {
561                 /*
562                  * parity errors in send memory are recoverable,
563                  * just cancel the send (if indicated in * sendbuffererror),
564                  * count the occurrence, unfreeze (if no other handled
565                  * hardware error bits are set), and continue. They can
566                  * occur if a processor speculative read is done to the PIO
567                  * buffer while we are sending a packet, for example.
568                  */
569                 if (hwerrs & TXE_PIO_PARITY) {
570                         ipath_ht_txe_recover(dd);
571                         hwerrs &= ~TXE_PIO_PARITY;
572                 }
573
574                 if (!hwerrs) {
575                         ipath_dbg("Clearing freezemode on ignored or "
576                                   "recovered hardware error\n");
577                         ipath_clear_freeze(dd);
578                 }
579         }
580
581         *msg = '\0';
582
583         /*
584          * may someday want to decode into which bits are which
585          * functional area for parity errors, etc.
586          */
587         if (hwerrs & (infinipath_hwe_htcmemparityerr_mask
588                       << INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT)) {
589                 bits = (u32) ((hwerrs >>
590                                INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT) &
591                               INFINIPATH_HWE_HTCMEMPARITYERR_MASK);
592                 snprintf(bitsmsg, sizeof bitsmsg, "[HTC Parity Errs %x] ",
593                          bits);
594                 strlcat(msg, bitsmsg, msgl);
595         }
596
597         ipath_format_hwerrors(hwerrs,
598                               ipath_6110_hwerror_msgs,
599                               sizeof(ipath_6110_hwerror_msgs) /
600                               sizeof(ipath_6110_hwerror_msgs[0]),
601                               msg, msgl);
602
603         if (hwerrs & (_IPATH_HTLINK0_CRCBITS | _IPATH_HTLINK1_CRCBITS))
604                 hwerr_crcbits(dd, hwerrs, msg, msgl);
605
606         if (hwerrs & INFINIPATH_HWE_MEMBISTFAILED) {
607                 strlcat(msg, "[Memory BIST test failed, InfiniPath hardware unusable]",
608                         msgl);
609                 /* ignore from now on, so disable until driver reloaded */
610                 dd->ipath_hwerrmask &= ~INFINIPATH_HWE_MEMBISTFAILED;
611                 ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask,
612                                  dd->ipath_hwerrmask);
613         }
614 #define _IPATH_PLL_FAIL (INFINIPATH_HWE_COREPLL_FBSLIP |        \
615                          INFINIPATH_HWE_COREPLL_RFSLIP |        \
616                          INFINIPATH_HWE_HTBPLL_FBSLIP |         \
617                          INFINIPATH_HWE_HTBPLL_RFSLIP |         \
618                          INFINIPATH_HWE_HTAPLL_FBSLIP |         \
619                          INFINIPATH_HWE_HTAPLL_RFSLIP)
620
621         if (hwerrs & _IPATH_PLL_FAIL) {
622                 snprintf(bitsmsg, sizeof bitsmsg,
623                          "[PLL failed (%llx), InfiniPath hardware unusable]",
624                          (unsigned long long) (hwerrs & _IPATH_PLL_FAIL));
625                 strlcat(msg, bitsmsg, msgl);
626                 /* ignore from now on, so disable until driver reloaded */
627                 dd->ipath_hwerrmask &= ~(hwerrs & _IPATH_PLL_FAIL);
628                 ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask,
629                                  dd->ipath_hwerrmask);
630         }
631
632         if (hwerrs & INFINIPATH_HWE_SERDESPLLFAILED) {
633                 /*
634                  * If it occurs, it is left masked since the eternal
635                  * interface is unused
636                  */
637                 dd->ipath_hwerrmask &= ~INFINIPATH_HWE_SERDESPLLFAILED;
638                 ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask,
639                                  dd->ipath_hwerrmask);
640         }
641
642         if (hwerrs) {
643                 /*
644                  * if any set that we aren't ignoring; only
645                  * make the complaint once, in case it's stuck
646                  * or recurring, and we get here multiple
647                  * times.
648                  * force link down, so switch knows, and
649                  * LEDs are turned off
650                  */
651                 if (dd->ipath_flags & IPATH_INITTED) {
652                         ipath_set_linkstate(dd, IPATH_IB_LINKDOWN);
653                         ipath_setup_ht_setextled(dd,
654                                 INFINIPATH_IBCS_L_STATE_DOWN,
655                                 INFINIPATH_IBCS_LT_STATE_DISABLED);
656                         ipath_dev_err(dd, "Fatal Hardware Error (freeze "
657                                           "mode), no longer usable, SN %.16s\n",
658                                           dd->ipath_serial);
659                         isfatal = 1;
660                 }
661                 *dd->ipath_statusp &= ~IPATH_STATUS_IB_READY;
662                 /* mark as having had error */
663                 *dd->ipath_statusp |= IPATH_STATUS_HWERROR;
664                 /*
665                  * mark as not usable, at a minimum until driver
666                  * is reloaded, probably until reboot, since no
667                  * other reset is possible.
668                  */
669                 dd->ipath_flags &= ~IPATH_INITTED;
670         }
671         else
672                 *msg = 0; /* recovered from all of them */
673         if (*msg)
674                 ipath_dev_err(dd, "%s hardware error\n", msg);
675         if (isfatal && !ipath_diag_inuse && dd->ipath_freezemsg)
676                 /*
677                  * for status file; if no trailing brace is copied,
678                  * we'll know it was truncated.
679                  */
680                 snprintf(dd->ipath_freezemsg,
681                          dd->ipath_freezelen, "{%s}", msg);
682
683 bail:;
684 }
685
686 /**
687  * ipath_ht_boardname - fill in the board name
688  * @dd: the infinipath device
689  * @name: the output buffer
690  * @namelen: the size of the output buffer
691  *
692  * fill in the board name, based on the board revision register
693  */
694 static int ipath_ht_boardname(struct ipath_devdata *dd, char *name,
695                               size_t namelen)
696 {
697         char *n = NULL;
698         u8 boardrev = dd->ipath_boardrev;
699         int ret = 0;
700
701         switch (boardrev) {
702         case 5:
703                 /*
704                  * original production board; two production levels, with
705                  * different serial number ranges.   See ipath_ht_early_init() for
706                  * case where we enable IPATH_GPIO_INTR for later serial # range.
707                  * Original 112* serial number is no longer supported.
708                  */
709                 n = "InfiniPath_QHT7040";
710                 break;
711         case 7:
712                 /* small form factor production board */
713                 n = "InfiniPath_QHT7140";
714                 break;
715         default:                /* don't know, just print the number */
716                 ipath_dev_err(dd, "Don't yet know about board "
717                               "with ID %u\n", boardrev);
718                 snprintf(name, namelen, "Unknown_InfiniPath_QHT7xxx_%u",
719                          boardrev);
720                 break;
721         }
722         if (n)
723                 snprintf(name, namelen, "%s", n);
724
725         if (ret) {
726                 ipath_dev_err(dd, "Unsupported InfiniPath board %s!\n", name);
727                 goto bail;
728         }
729         if (dd->ipath_majrev != 3 || (dd->ipath_minrev < 2 ||
730                 dd->ipath_minrev > 4)) {
731                 /*
732                  * This version of the driver only supports Rev 3.2 - 3.4
733                  */
734                 ipath_dev_err(dd,
735                               "Unsupported InfiniPath hardware revision %u.%u!\n",
736                               dd->ipath_majrev, dd->ipath_minrev);
737                 ret = 1;
738                 goto bail;
739         }
740         /*
741          * pkt/word counters are 32 bit, and therefore wrap fast enough
742          * that we snapshot them from a timer, and maintain 64 bit shadow
743          * copies
744          */
745         dd->ipath_flags |= IPATH_32BITCOUNTERS;
746         dd->ipath_flags |= IPATH_GPIO_INTR;
747         if (dd->ipath_lbus_speed != 800)
748                 ipath_dev_err(dd,
749                               "Incorrectly configured for HT @ %uMHz\n",
750                               dd->ipath_lbus_speed);
751
752         /*
753          * set here, not in ipath_init_*_funcs because we have to do
754          * it after we can read chip registers.
755          */
756         dd->ipath_ureg_align =
757                 ipath_read_kreg32(dd, dd->ipath_kregs->kr_pagealign);
758
759 bail:
760         return ret;
761 }
762
763 static void ipath_check_htlink(struct ipath_devdata *dd)
764 {
765         u8 linkerr, link_off, i;
766
767         for (i = 0; i < 2; i++) {
768                 link_off = dd->ipath_ht_slave_off + i * 4 + 0xd;
769                 if (pci_read_config_byte(dd->pcidev, link_off, &linkerr))
770                         dev_info(&dd->pcidev->dev, "Couldn't read "
771                                  "linkerror%d of HT slave/primary block\n",
772                                  i);
773                 else if (linkerr & 0xf0) {
774                         ipath_cdbg(VERBOSE, "HT linkerr%d bits 0x%x set, "
775                                    "clearing\n", linkerr >> 4, i);
776                         /*
777                          * writing the linkerr bits that are set should
778                          * clear them
779                          */
780                         if (pci_write_config_byte(dd->pcidev, link_off,
781                                                   linkerr))
782                                 ipath_dbg("Failed write to clear HT "
783                                           "linkerror%d\n", i);
784                         if (pci_read_config_byte(dd->pcidev, link_off,
785                                                  &linkerr))
786                                 dev_info(&dd->pcidev->dev,
787                                          "Couldn't reread linkerror%d of "
788                                          "HT slave/primary block\n", i);
789                         else if (linkerr & 0xf0)
790                                 dev_info(&dd->pcidev->dev,
791                                          "HT linkerror%d bits 0x%x "
792                                          "couldn't be cleared\n",
793                                          i, linkerr >> 4);
794                 }
795         }
796 }
797
798 static int ipath_setup_ht_reset(struct ipath_devdata *dd)
799 {
800         ipath_dbg("No reset possible for this InfiniPath hardware\n");
801         return 0;
802 }
803
804 #define HT_INTR_DISC_CONFIG  0x80       /* HT interrupt and discovery cap */
805 #define HT_INTR_REG_INDEX    2  /* intconfig requires indirect accesses */
806
807 /*
808  * Bits 13-15 of command==0 is slave/primary block.  Clear any HT CRC
809  * errors.  We only bother to do this at load time, because it's OK if
810  * it happened before we were loaded (first time after boot/reset),
811  * but any time after that, it's fatal anyway.  Also need to not check
812  * for upper byte errors if we are in 8 bit mode, so figure out
813  * our width.  For now, at least, also complain if it's 8 bit.
814  */
815 static void slave_or_pri_blk(struct ipath_devdata *dd, struct pci_dev *pdev,
816                              int pos, u8 cap_type)
817 {
818         u8 linkwidth = 0, linkerr, link_a_b_off, link_off;
819         u16 linkctrl = 0;
820         int i;
821
822         dd->ipath_ht_slave_off = pos;
823         /* command word, master_host bit */
824         /* master host || slave */
825         if ((cap_type >> 2) & 1)
826                 link_a_b_off = 4;
827         else
828                 link_a_b_off = 0;
829         ipath_cdbg(VERBOSE, "HT%u (Link %c) connected to processor\n",
830                    link_a_b_off ? 1 : 0,
831                    link_a_b_off ? 'B' : 'A');
832
833         link_a_b_off += pos;
834
835         /*
836          * check both link control registers; clear both HT CRC sets if
837          * necessary.
838          */
839         for (i = 0; i < 2; i++) {
840                 link_off = pos + i * 4 + 0x4;
841                 if (pci_read_config_word(pdev, link_off, &linkctrl))
842                         ipath_dev_err(dd, "Couldn't read HT link control%d "
843                                       "register\n", i);
844                 else if (linkctrl & (0xf << 8)) {
845                         ipath_cdbg(VERBOSE, "Clear linkctrl%d CRC Error "
846                                    "bits %x\n", i, linkctrl & (0xf << 8));
847                         /*
848                          * now write them back to clear the error.
849                          */
850                         pci_write_config_word(pdev, link_off,
851                                               linkctrl & (0xf << 8));
852                 }
853         }
854
855         /*
856          * As with HT CRC bits, same for protocol errors that might occur
857          * during boot.
858          */
859         for (i = 0; i < 2; i++) {
860                 link_off = pos + i * 4 + 0xd;
861                 if (pci_read_config_byte(pdev, link_off, &linkerr))
862                         dev_info(&pdev->dev, "Couldn't read linkerror%d "
863                                  "of HT slave/primary block\n", i);
864                 else if (linkerr & 0xf0) {
865                         ipath_cdbg(VERBOSE, "HT linkerr%d bits 0x%x set, "
866                                    "clearing\n", linkerr >> 4, i);
867                         /*
868                          * writing the linkerr bits that are set will clear
869                          * them
870                          */
871                         if (pci_write_config_byte
872                             (pdev, link_off, linkerr))
873                                 ipath_dbg("Failed write to clear HT "
874                                           "linkerror%d\n", i);
875                         if (pci_read_config_byte(pdev, link_off, &linkerr))
876                                 dev_info(&pdev->dev, "Couldn't reread "
877                                          "linkerror%d of HT slave/primary "
878                                          "block\n", i);
879                         else if (linkerr & 0xf0)
880                                 dev_info(&pdev->dev, "HT linkerror%d bits "
881                                          "0x%x couldn't be cleared\n",
882                                          i, linkerr >> 4);
883                 }
884         }
885
886         /*
887          * this is just for our link to the host, not devices connected
888          * through tunnel.
889          */
890
891         if (pci_read_config_byte(pdev, link_a_b_off + 7, &linkwidth))
892                 ipath_dev_err(dd, "Couldn't read HT link width "
893                               "config register\n");
894         else {
895                 u32 width;
896                 switch (linkwidth & 7) {
897                 case 5:
898                         width = 4;
899                         break;
900                 case 4:
901                         width = 2;
902                         break;
903                 case 3:
904                         width = 32;
905                         break;
906                 case 1:
907                         width = 16;
908                         break;
909                 case 0:
910                 default:        /* if wrong, assume 8 bit */
911                         width = 8;
912                         break;
913                 }
914
915                 dd->ipath_lbus_width = width;
916
917                 if (linkwidth != 0x11) {
918                         ipath_dev_err(dd, "Not configured for 16 bit HT "
919                                       "(%x)\n", linkwidth);
920                         if (!(linkwidth & 0xf)) {
921                                 ipath_dbg("Will ignore HT lane1 errors\n");
922                                 dd->ipath_flags |= IPATH_8BIT_IN_HT0;
923                         }
924                 }
925         }
926
927         /*
928          * this is just for our link to the host, not devices connected
929          * through tunnel.
930          */
931         if (pci_read_config_byte(pdev, link_a_b_off + 0xd, &linkwidth))
932                 ipath_dev_err(dd, "Couldn't read HT link frequency "
933                               "config register\n");
934         else {
935                 u32 speed;
936                 switch (linkwidth & 0xf) {
937                 case 6:
938                         speed = 1000;
939                         break;
940                 case 5:
941                         speed = 800;
942                         break;
943                 case 4:
944                         speed = 600;
945                         break;
946                 case 3:
947                         speed = 500;
948                         break;
949                 case 2:
950                         speed = 400;
951                         break;
952                 case 1:
953                         speed = 300;
954                         break;
955                 default:
956                         /*
957                          * assume reserved and vendor-specific are 200...
958                          */
959                 case 0:
960                         speed = 200;
961                         break;
962                 }
963                 dd->ipath_lbus_speed = speed;
964         }
965
966         snprintf(dd->ipath_lbus_info, sizeof(dd->ipath_lbus_info),
967                 "HyperTransport,%uMHz,x%u\n",
968                 dd->ipath_lbus_speed,
969                 dd->ipath_lbus_width);
970 }
971
972 static int ipath_ht_intconfig(struct ipath_devdata *dd)
973 {
974         int ret;
975
976         if (dd->ipath_intconfig) {
977                 ipath_write_kreg(dd, dd->ipath_kregs->kr_interruptconfig,
978                                  dd->ipath_intconfig);  /* interrupt address */
979                 ret = 0;
980         } else {
981                 ipath_dev_err(dd, "No interrupts enabled, couldn't setup "
982                               "interrupt address\n");
983                 ret = -EINVAL;
984         }
985
986         return ret;
987 }
988
989 static void ipath_ht_irq_update(struct pci_dev *dev, int irq,
990                                 struct ht_irq_msg *msg)
991 {
992         struct ipath_devdata *dd = pci_get_drvdata(dev);
993         u64 prev_intconfig = dd->ipath_intconfig;
994
995         dd->ipath_intconfig = msg->address_lo;
996         dd->ipath_intconfig |= ((u64) msg->address_hi) << 32;
997
998         /*
999          * If the previous value of dd->ipath_intconfig is zero, we're
1000          * getting configured for the first time, and must not program the
1001          * intconfig register here (it will be programmed later, when the
1002          * hardware is ready).  Otherwise, we should.
1003          */
1004         if (prev_intconfig)
1005                 ipath_ht_intconfig(dd);
1006 }
1007
1008 /**
1009  * ipath_setup_ht_config - setup the interruptconfig register
1010  * @dd: the infinipath device
1011  * @pdev: the PCI device
1012  *
1013  * setup the interruptconfig register from the HT config info.
1014  * Also clear CRC errors in HT linkcontrol, if necessary.
1015  * This is done only for the real hardware.  It is done before
1016  * chip address space is initted, so can't touch infinipath registers
1017  */
1018 static int ipath_setup_ht_config(struct ipath_devdata *dd,
1019                                  struct pci_dev *pdev)
1020 {
1021         int pos, ret;
1022
1023         ret = __ht_create_irq(pdev, 0, ipath_ht_irq_update);
1024         if (ret < 0) {
1025                 ipath_dev_err(dd, "Couldn't create interrupt handler: "
1026                               "err %d\n", ret);
1027                 goto bail;
1028         }
1029         dd->ipath_irq = ret;
1030         ret = 0;
1031
1032         /*
1033          * Handle clearing CRC errors in linkctrl register if necessary.  We
1034          * do this early, before we ever enable errors or hardware errors,
1035          * mostly to avoid causing the chip to enter freeze mode.
1036          */
1037         pos = pci_find_capability(pdev, PCI_CAP_ID_HT);
1038         if (!pos) {
1039                 ipath_dev_err(dd, "Couldn't find HyperTransport "
1040                               "capability; no interrupts\n");
1041                 ret = -ENODEV;
1042                 goto bail;
1043         }
1044         do {
1045                 u8 cap_type;
1046
1047                 /*
1048                  * The HT capability type byte is 3 bytes after the
1049                  * capability byte.
1050                  */
1051                 if (pci_read_config_byte(pdev, pos + 3, &cap_type)) {
1052                         dev_info(&pdev->dev, "Couldn't read config "
1053                                  "command @ %d\n", pos);
1054                         continue;
1055                 }
1056                 if (!(cap_type & 0xE0))
1057                         slave_or_pri_blk(dd, pdev, pos, cap_type);
1058         } while ((pos = pci_find_next_capability(pdev, pos,
1059                                                  PCI_CAP_ID_HT)));
1060
1061         dd->ipath_flags |= IPATH_SWAP_PIOBUFS;
1062
1063 bail:
1064         return ret;
1065 }
1066
1067 /**
1068  * ipath_setup_ht_cleanup - clean up any per-chip chip-specific stuff
1069  * @dd: the infinipath device
1070  *
1071  * Called during driver unload.
1072  * This is currently a nop for the HT chip, not for all chips
1073  */
1074 static void ipath_setup_ht_cleanup(struct ipath_devdata *dd)
1075 {
1076 }
1077
1078 /**
1079  * ipath_setup_ht_setextled - set the state of the two external LEDs
1080  * @dd: the infinipath device
1081  * @lst: the L state
1082  * @ltst: the LT state
1083  *
1084  * Set the state of the two external LEDs, to indicate physical and
1085  * logical state of IB link.   For this chip (at least with recommended
1086  * board pinouts), LED1 is Green (physical state), and LED2 is Yellow
1087  * (logical state)
1088  *
1089  * Note:  We try to match the Mellanox HCA LED behavior as best
1090  * we can.  Green indicates physical link state is OK (something is
1091  * plugged in, and we can train).
1092  * Amber indicates the link is logically up (ACTIVE).
1093  * Mellanox further blinks the amber LED to indicate data packet
1094  * activity, but we have no hardware support for that, so it would
1095  * require waking up every 10-20 msecs and checking the counters
1096  * on the chip, and then turning the LED off if appropriate.  That's
1097  * visible overhead, so not something we will do.
1098  *
1099  */
1100 static void ipath_setup_ht_setextled(struct ipath_devdata *dd,
1101                                      u64 lst, u64 ltst)
1102 {
1103         u64 extctl;
1104         unsigned long flags = 0;
1105
1106         /* the diags use the LED to indicate diag info, so we leave
1107          * the external LED alone when the diags are running */
1108         if (ipath_diag_inuse)
1109                 return;
1110
1111         /* Allow override of LED display for, e.g. Locating system in rack */
1112         if (dd->ipath_led_override) {
1113                 ltst = (dd->ipath_led_override & IPATH_LED_PHYS)
1114                         ? INFINIPATH_IBCS_LT_STATE_LINKUP
1115                         : INFINIPATH_IBCS_LT_STATE_DISABLED;
1116                 lst = (dd->ipath_led_override & IPATH_LED_LOG)
1117                         ? INFINIPATH_IBCS_L_STATE_ACTIVE
1118                         : INFINIPATH_IBCS_L_STATE_DOWN;
1119         }
1120
1121         spin_lock_irqsave(&dd->ipath_gpio_lock, flags);
1122         /*
1123          * start by setting both LED control bits to off, then turn
1124          * on the appropriate bit(s).
1125          */
1126         if (dd->ipath_boardrev == 8) { /* LS/X-1 uses different pins */
1127                 /*
1128                  * major difference is that INFINIPATH_EXTC_LEDGBLERR_OFF
1129                  * is inverted,  because it is normally used to indicate
1130                  * a hardware fault at reset, if there were errors
1131                  */
1132                 extctl = (dd->ipath_extctrl & ~INFINIPATH_EXTC_LEDGBLOK_ON)
1133                         | INFINIPATH_EXTC_LEDGBLERR_OFF;
1134                 if (ltst == INFINIPATH_IBCS_LT_STATE_LINKUP)
1135                         extctl &= ~INFINIPATH_EXTC_LEDGBLERR_OFF;
1136                 if (lst == INFINIPATH_IBCS_L_STATE_ACTIVE)
1137                         extctl |= INFINIPATH_EXTC_LEDGBLOK_ON;
1138         }
1139         else {
1140                 extctl = dd->ipath_extctrl &
1141                         ~(INFINIPATH_EXTC_LED1PRIPORT_ON |
1142                           INFINIPATH_EXTC_LED2PRIPORT_ON);
1143                 if (ltst == INFINIPATH_IBCS_LT_STATE_LINKUP)
1144                         extctl |= INFINIPATH_EXTC_LED1PRIPORT_ON;
1145                 if (lst == INFINIPATH_IBCS_L_STATE_ACTIVE)
1146                         extctl |= INFINIPATH_EXTC_LED2PRIPORT_ON;
1147         }
1148         dd->ipath_extctrl = extctl;
1149         ipath_write_kreg(dd, dd->ipath_kregs->kr_extctrl, extctl);
1150         spin_unlock_irqrestore(&dd->ipath_gpio_lock, flags);
1151 }
1152
1153 static void ipath_init_ht_variables(struct ipath_devdata *dd)
1154 {
1155         /*
1156          * setup the register offsets, since they are different for each
1157          * chip
1158          */
1159         dd->ipath_kregs = &ipath_ht_kregs;
1160         dd->ipath_cregs = &ipath_ht_cregs;
1161
1162         dd->ipath_gpio_sda_num = _IPATH_GPIO_SDA_NUM;
1163         dd->ipath_gpio_scl_num = _IPATH_GPIO_SCL_NUM;
1164         dd->ipath_gpio_sda = IPATH_GPIO_SDA;
1165         dd->ipath_gpio_scl = IPATH_GPIO_SCL;
1166
1167         /*
1168          * Fill in data for field-values that change in newer chips.
1169          * We dynamically specify only the mask for LINKTRAININGSTATE
1170          * and only the shift for LINKSTATE, as they are the only ones
1171          * that change.  Also precalculate the 3 link states of interest
1172          * and the combined mask.
1173          */
1174         dd->ibcs_ls_shift = IBA6110_IBCS_LINKSTATE_SHIFT;
1175         dd->ibcs_lts_mask = IBA6110_IBCS_LINKTRAININGSTATE_MASK;
1176         dd->ibcs_mask = (INFINIPATH_IBCS_LINKSTATE_MASK <<
1177                 dd->ibcs_ls_shift) | dd->ibcs_lts_mask;
1178         dd->ib_init = (INFINIPATH_IBCS_LT_STATE_LINKUP <<
1179                 INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) |
1180                 (INFINIPATH_IBCS_L_STATE_INIT << dd->ibcs_ls_shift);
1181         dd->ib_arm = (INFINIPATH_IBCS_LT_STATE_LINKUP <<
1182                 INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) |
1183                 (INFINIPATH_IBCS_L_STATE_ARM << dd->ibcs_ls_shift);
1184         dd->ib_active = (INFINIPATH_IBCS_LT_STATE_LINKUP <<
1185                 INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) |
1186                 (INFINIPATH_IBCS_L_STATE_ACTIVE << dd->ibcs_ls_shift);
1187
1188         /*
1189          * Fill in data for ibcc field-values that change in newer chips.
1190          * We dynamically specify only the mask for LINKINITCMD
1191          * and only the shift for LINKCMD and MAXPKTLEN, as they are
1192          * the only ones that change.
1193          */
1194         dd->ibcc_lic_mask = INFINIPATH_IBCC_LINKINITCMD_MASK;
1195         dd->ibcc_lc_shift = INFINIPATH_IBCC_LINKCMD_SHIFT;
1196         dd->ibcc_mpl_shift = INFINIPATH_IBCC_MAXPKTLEN_SHIFT;
1197
1198         /* Fill in shifts for RcvCtrl. */
1199         dd->ipath_r_portenable_shift = INFINIPATH_R_PORTENABLE_SHIFT;
1200         dd->ipath_r_intravail_shift = INFINIPATH_R_INTRAVAIL_SHIFT;
1201         dd->ipath_r_tailupd_shift = INFINIPATH_R_TAILUPD_SHIFT;
1202         dd->ipath_r_portcfg_shift = 0; /* Not on IBA6110 */
1203
1204         dd->ipath_i_bitsextant =
1205                 (INFINIPATH_I_RCVURG_MASK << INFINIPATH_I_RCVURG_SHIFT) |
1206                 (INFINIPATH_I_RCVAVAIL_MASK <<
1207                  INFINIPATH_I_RCVAVAIL_SHIFT) |
1208                 INFINIPATH_I_ERROR | INFINIPATH_I_SPIOSENT |
1209                 INFINIPATH_I_SPIOBUFAVAIL | INFINIPATH_I_GPIO;
1210
1211         dd->ipath_e_bitsextant =
1212                 INFINIPATH_E_RFORMATERR | INFINIPATH_E_RVCRC |
1213                 INFINIPATH_E_RICRC | INFINIPATH_E_RMINPKTLEN |
1214                 INFINIPATH_E_RMAXPKTLEN | INFINIPATH_E_RLONGPKTLEN |
1215                 INFINIPATH_E_RSHORTPKTLEN | INFINIPATH_E_RUNEXPCHAR |
1216                 INFINIPATH_E_RUNSUPVL | INFINIPATH_E_REBP |
1217                 INFINIPATH_E_RIBFLOW | INFINIPATH_E_RBADVERSION |
1218                 INFINIPATH_E_RRCVEGRFULL | INFINIPATH_E_RRCVHDRFULL |
1219                 INFINIPATH_E_RBADTID | INFINIPATH_E_RHDRLEN |
1220                 INFINIPATH_E_RHDR | INFINIPATH_E_RIBLOSTLINK |
1221                 INFINIPATH_E_SMINPKTLEN | INFINIPATH_E_SMAXPKTLEN |
1222                 INFINIPATH_E_SUNDERRUN | INFINIPATH_E_SPKTLEN |
1223                 INFINIPATH_E_SDROPPEDSMPPKT | INFINIPATH_E_SDROPPEDDATAPKT |
1224                 INFINIPATH_E_SPIOARMLAUNCH | INFINIPATH_E_SUNEXPERRPKTNUM |
1225                 INFINIPATH_E_SUNSUPVL | INFINIPATH_E_IBSTATUSCHANGED |
1226                 INFINIPATH_E_INVALIDADDR | INFINIPATH_E_RESET |
1227                 INFINIPATH_E_HARDWARE;
1228
1229         dd->ipath_hwe_bitsextant =
1230                 (INFINIPATH_HWE_HTCMEMPARITYERR_MASK <<
1231                  INFINIPATH_HWE_HTCMEMPARITYERR_SHIFT) |
1232                 (INFINIPATH_HWE_TXEMEMPARITYERR_MASK <<
1233                  INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT) |
1234                 (INFINIPATH_HWE_RXEMEMPARITYERR_MASK <<
1235                  INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT) |
1236                 INFINIPATH_HWE_HTCLNKABYTE0CRCERR |
1237                 INFINIPATH_HWE_HTCLNKABYTE1CRCERR |
1238                 INFINIPATH_HWE_HTCLNKBBYTE0CRCERR |
1239                 INFINIPATH_HWE_HTCLNKBBYTE1CRCERR |
1240                 INFINIPATH_HWE_HTCMISCERR4 |
1241                 INFINIPATH_HWE_HTCMISCERR5 | INFINIPATH_HWE_HTCMISCERR6 |
1242                 INFINIPATH_HWE_HTCMISCERR7 |
1243                 INFINIPATH_HWE_HTCBUSTREQPARITYERR |
1244                 INFINIPATH_HWE_HTCBUSTRESPPARITYERR |
1245                 INFINIPATH_HWE_HTCBUSIREQPARITYERR |
1246                 INFINIPATH_HWE_RXDSYNCMEMPARITYERR |
1247                 INFINIPATH_HWE_MEMBISTFAILED |
1248                 INFINIPATH_HWE_COREPLL_FBSLIP |
1249                 INFINIPATH_HWE_COREPLL_RFSLIP |
1250                 INFINIPATH_HWE_HTBPLL_FBSLIP |
1251                 INFINIPATH_HWE_HTBPLL_RFSLIP |
1252                 INFINIPATH_HWE_HTAPLL_FBSLIP |
1253                 INFINIPATH_HWE_HTAPLL_RFSLIP |
1254                 INFINIPATH_HWE_SERDESPLLFAILED |
1255                 INFINIPATH_HWE_IBCBUSTOSPCPARITYERR |
1256                 INFINIPATH_HWE_IBCBUSFRSPCPARITYERR;
1257
1258         dd->ipath_i_rcvavail_mask = INFINIPATH_I_RCVAVAIL_MASK;
1259         dd->ipath_i_rcvurg_mask = INFINIPATH_I_RCVURG_MASK;
1260         dd->ipath_i_rcvavail_shift = INFINIPATH_I_RCVAVAIL_SHIFT;
1261         dd->ipath_i_rcvurg_shift = INFINIPATH_I_RCVURG_SHIFT;
1262
1263         /*
1264          * EEPROM error log 0 is TXE Parity errors. 1 is RXE Parity.
1265          * 2 is Some Misc, 3 is reserved for future.
1266          */
1267         dd->ipath_eep_st_masks[0].hwerrs_to_log =
1268                 INFINIPATH_HWE_TXEMEMPARITYERR_MASK <<
1269                 INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT;
1270
1271         dd->ipath_eep_st_masks[1].hwerrs_to_log =
1272                 INFINIPATH_HWE_RXEMEMPARITYERR_MASK <<
1273                 INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT;
1274
1275         dd->ipath_eep_st_masks[2].errs_to_log = INFINIPATH_E_RESET;
1276
1277         dd->delay_mult = 2; /* SDR, 4X, can't change */
1278
1279         dd->ipath_link_width_supported = IB_WIDTH_1X | IB_WIDTH_4X;
1280         dd->ipath_link_speed_supported = IPATH_IB_SDR;
1281         dd->ipath_link_width_enabled = IB_WIDTH_4X;
1282         dd->ipath_link_speed_enabled = dd->ipath_link_speed_supported;
1283         /* these can't change for this chip, so set once */
1284         dd->ipath_link_width_active = dd->ipath_link_width_enabled;
1285         dd->ipath_link_speed_active = dd->ipath_link_speed_enabled;
1286 }
1287
1288 /**
1289  * ipath_ht_init_hwerrors - enable hardware errors
1290  * @dd: the infinipath device
1291  *
1292  * now that we have finished initializing everything that might reasonably
1293  * cause a hardware error, and cleared those errors bits as they occur,
1294  * we can enable hardware errors in the mask (potentially enabling
1295  * freeze mode), and enable hardware errors as errors (along with
1296  * everything else) in errormask
1297  */
1298 static void ipath_ht_init_hwerrors(struct ipath_devdata *dd)
1299 {
1300         ipath_err_t val;
1301         u64 extsval;
1302
1303         extsval = ipath_read_kreg64(dd, dd->ipath_kregs->kr_extstatus);
1304
1305         if (!(extsval & INFINIPATH_EXTS_MEMBIST_ENDTEST))
1306                 ipath_dev_err(dd, "MemBIST did not complete!\n");
1307         if (extsval & INFINIPATH_EXTS_MEMBIST_CORRECT)
1308                 ipath_dbg("MemBIST corrected\n");
1309
1310         ipath_check_htlink(dd);
1311
1312         /* barring bugs, all hwerrors become interrupts, which can */
1313         val = -1LL;
1314         /* don't look at crc lane1 if 8 bit */
1315         if (dd->ipath_flags & IPATH_8BIT_IN_HT0)
1316                 val &= ~infinipath_hwe_htclnkabyte1crcerr;
1317         /* don't look at crc lane1 if 8 bit */
1318         if (dd->ipath_flags & IPATH_8BIT_IN_HT1)
1319                 val &= ~infinipath_hwe_htclnkbbyte1crcerr;
1320
1321         /*
1322          * disable RXDSYNCMEMPARITY because external serdes is unused,
1323          * and therefore the logic will never be used or initialized,
1324          * and uninitialized state will normally result in this error
1325          * being asserted.  Similarly for the external serdess pll
1326          * lock signal.
1327          */
1328         val &= ~(INFINIPATH_HWE_SERDESPLLFAILED |
1329                  INFINIPATH_HWE_RXDSYNCMEMPARITYERR);
1330
1331         /*
1332          * Disable MISCERR4 because of an inversion in the HT core
1333          * logic checking for errors that cause this bit to be set.
1334          * The errata can also cause the protocol error bit to be set
1335          * in the HT config space linkerror register(s).
1336          */
1337         val &= ~INFINIPATH_HWE_HTCMISCERR4;
1338
1339         /*
1340          * PLL ignored because unused MDIO interface has a logic problem
1341          */
1342         if (dd->ipath_boardrev == 4 || dd->ipath_boardrev == 9)
1343                 val &= ~INFINIPATH_HWE_SERDESPLLFAILED;
1344         dd->ipath_hwerrmask = val;
1345 }
1346
1347
1348
1349
1350 /**
1351  * ipath_ht_bringup_serdes - bring up the serdes
1352  * @dd: the infinipath device
1353  */
1354 static int ipath_ht_bringup_serdes(struct ipath_devdata *dd)
1355 {
1356         u64 val, config1;
1357         int ret = 0, change = 0;
1358
1359         ipath_dbg("Trying to bringup serdes\n");
1360
1361         if (ipath_read_kreg64(dd, dd->ipath_kregs->kr_hwerrstatus) &
1362             INFINIPATH_HWE_SERDESPLLFAILED)
1363         {
1364                 ipath_dbg("At start, serdes PLL failed bit set in "
1365                           "hwerrstatus, clearing and continuing\n");
1366                 ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear,
1367                                  INFINIPATH_HWE_SERDESPLLFAILED);
1368         }
1369
1370         val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesconfig0);
1371         config1 = ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesconfig1);
1372
1373         ipath_cdbg(VERBOSE, "Initial serdes status is config0=%llx "
1374                    "config1=%llx, sstatus=%llx xgxs %llx\n",
1375                    (unsigned long long) val, (unsigned long long) config1,
1376                    (unsigned long long)
1377                    ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesstatus),
1378                    (unsigned long long)
1379                    ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig));
1380
1381         /* force reset on */
1382         val |= INFINIPATH_SERDC0_RESET_PLL
1383                 /* | INFINIPATH_SERDC0_RESET_MASK */
1384                 ;
1385         ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig0, val);
1386         udelay(15);             /* need pll reset set at least for a bit */
1387
1388         if (val & INFINIPATH_SERDC0_RESET_PLL) {
1389                 u64 val2 = val &= ~INFINIPATH_SERDC0_RESET_PLL;
1390                 /* set lane resets, and tx idle, during pll reset */
1391                 val2 |= INFINIPATH_SERDC0_RESET_MASK |
1392                         INFINIPATH_SERDC0_TXIDLE;
1393                 ipath_cdbg(VERBOSE, "Clearing serdes PLL reset (writing "
1394                            "%llx)\n", (unsigned long long) val2);
1395                 ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig0,
1396                                  val2);
1397                 /*
1398                  * be sure chip saw it
1399                  */
1400                 val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch);
1401                 /*
1402                  * need pll reset clear at least 11 usec before lane
1403                  * resets cleared; give it a few more
1404                  */
1405                 udelay(15);
1406                 val = val2;     /* for check below */
1407         }
1408
1409         if (val & (INFINIPATH_SERDC0_RESET_PLL |
1410                    INFINIPATH_SERDC0_RESET_MASK |
1411                    INFINIPATH_SERDC0_TXIDLE)) {
1412                 val &= ~(INFINIPATH_SERDC0_RESET_PLL |
1413                          INFINIPATH_SERDC0_RESET_MASK |
1414                          INFINIPATH_SERDC0_TXIDLE);
1415                 /* clear them */
1416                 ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig0,
1417                                  val);
1418         }
1419
1420         val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig);
1421         if (val & INFINIPATH_XGXS_RESET) {
1422                 /* normally true after boot */
1423                 val &= ~INFINIPATH_XGXS_RESET;
1424                 change = 1;
1425         }
1426         if (((val >> INFINIPATH_XGXS_RX_POL_SHIFT) &
1427              INFINIPATH_XGXS_RX_POL_MASK) != dd->ipath_rx_pol_inv ) {
1428                 /* need to compensate for Tx inversion in partner */
1429                 val &= ~(INFINIPATH_XGXS_RX_POL_MASK <<
1430                          INFINIPATH_XGXS_RX_POL_SHIFT);
1431                 val |= dd->ipath_rx_pol_inv <<
1432                         INFINIPATH_XGXS_RX_POL_SHIFT;
1433                 change = 1;
1434         }
1435         if (change)
1436                 ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val);
1437
1438         val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesconfig0);
1439
1440         /* clear current and de-emphasis bits */
1441         config1 &= ~0x0ffffffff00ULL;
1442         /* set current to 20ma */
1443         config1 |= 0x00000000000ULL;
1444         /* set de-emphasis to -5.68dB */
1445         config1 |= 0x0cccc000000ULL;
1446         ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig1, config1);
1447
1448         ipath_cdbg(VERBOSE, "After setup: serdes status is config0=%llx "
1449                    "config1=%llx, sstatus=%llx xgxs %llx\n",
1450                    (unsigned long long) val, (unsigned long long) config1,
1451                    (unsigned long long)
1452                    ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesstatus),
1453                    (unsigned long long)
1454                    ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig));
1455
1456         return ret;             /* for now, say we always succeeded */
1457 }
1458
1459 /**
1460  * ipath_ht_quiet_serdes - set serdes to txidle
1461  * @dd: the infinipath device
1462  * driver is being unloaded
1463  */
1464 static void ipath_ht_quiet_serdes(struct ipath_devdata *dd)
1465 {
1466         u64 val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_serdesconfig0);
1467
1468         val |= INFINIPATH_SERDC0_TXIDLE;
1469         ipath_dbg("Setting TxIdleEn on serdes (config0 = %llx)\n",
1470                   (unsigned long long) val);
1471         ipath_write_kreg(dd, dd->ipath_kregs->kr_serdesconfig0, val);
1472 }
1473
1474 /**
1475  * ipath_pe_put_tid - write a TID in chip
1476  * @dd: the infinipath device
1477  * @tidptr: pointer to the expected TID (in chip) to udpate
1478  * @tidtype: RCVHQ_RCV_TYPE_EAGER (1) for eager, RCVHQ_RCV_TYPE_EXPECTED (0) for expected
1479  * @pa: physical address of in memory buffer; ipath_tidinvalid if freeing
1480  *
1481  * This exists as a separate routine to allow for special locking etc.
1482  * It's used for both the full cleanup on exit, as well as the normal
1483  * setup and teardown.
1484  */
1485 static void ipath_ht_put_tid(struct ipath_devdata *dd,
1486                              u64 __iomem *tidptr, u32 type,
1487                              unsigned long pa)
1488 {
1489         if (!dd->ipath_kregbase)
1490                 return;
1491
1492         if (pa != dd->ipath_tidinvalid) {
1493                 if (unlikely((pa & ~INFINIPATH_RT_ADDR_MASK))) {
1494                         dev_info(&dd->pcidev->dev,
1495                                  "physaddr %lx has more than "
1496                                  "40 bits, using only 40!!!\n", pa);
1497                         pa &= INFINIPATH_RT_ADDR_MASK;
1498                 }
1499                 if (type == RCVHQ_RCV_TYPE_EAGER)
1500                         pa |= dd->ipath_tidtemplate;
1501                 else {
1502                         /* in words (fixed, full page).  */
1503                         u64 lenvalid = PAGE_SIZE >> 2;
1504                         lenvalid <<= INFINIPATH_RT_BUFSIZE_SHIFT;
1505                         pa |= lenvalid | INFINIPATH_RT_VALID;
1506                 }
1507         }
1508
1509         writeq(pa, tidptr);
1510 }
1511
1512
1513 /**
1514  * ipath_ht_clear_tid - clear all TID entries for a port, expected and eager
1515  * @dd: the infinipath device
1516  * @port: the port
1517  *
1518  * Used from ipath_close(), and at chip initialization.
1519  */
1520 static void ipath_ht_clear_tids(struct ipath_devdata *dd, unsigned port)
1521 {
1522         u64 __iomem *tidbase;
1523         int i;
1524
1525         if (!dd->ipath_kregbase)
1526                 return;
1527
1528         ipath_cdbg(VERBOSE, "Invalidate TIDs for port %u\n", port);
1529
1530         /*
1531          * need to invalidate all of the expected TID entries for this
1532          * port, so we don't have valid entries that might somehow get
1533          * used (early in next use of this port, or through some bug)
1534          */
1535         tidbase = (u64 __iomem *) ((char __iomem *)(dd->ipath_kregbase) +
1536                                    dd->ipath_rcvtidbase +
1537                                    port * dd->ipath_rcvtidcnt *
1538                                    sizeof(*tidbase));
1539         for (i = 0; i < dd->ipath_rcvtidcnt; i++)
1540                 ipath_ht_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EXPECTED,
1541                                  dd->ipath_tidinvalid);
1542
1543         tidbase = (u64 __iomem *) ((char __iomem *)(dd->ipath_kregbase) +
1544                                    dd->ipath_rcvegrbase +
1545                                    port * dd->ipath_rcvegrcnt *
1546                                    sizeof(*tidbase));
1547
1548         for (i = 0; i < dd->ipath_rcvegrcnt; i++)
1549                 ipath_ht_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EAGER,
1550                                  dd->ipath_tidinvalid);
1551 }
1552
1553 /**
1554  * ipath_ht_tidtemplate - setup constants for TID updates
1555  * @dd: the infinipath device
1556  *
1557  * We setup stuff that we use a lot, to avoid calculating each time
1558  */
1559 static void ipath_ht_tidtemplate(struct ipath_devdata *dd)
1560 {
1561         dd->ipath_tidtemplate = dd->ipath_ibmaxlen >> 2;
1562         dd->ipath_tidtemplate <<= INFINIPATH_RT_BUFSIZE_SHIFT;
1563         dd->ipath_tidtemplate |= INFINIPATH_RT_VALID;
1564
1565         /*
1566          * work around chip errata bug 7358, by marking invalid tids
1567          * as having max length
1568          */
1569         dd->ipath_tidinvalid = (-1LL & INFINIPATH_RT_BUFSIZE_MASK) <<
1570                 INFINIPATH_RT_BUFSIZE_SHIFT;
1571 }
1572
1573 static int ipath_ht_early_init(struct ipath_devdata *dd)
1574 {
1575         u32 __iomem *piobuf;
1576         u32 pioincr, val32;
1577         int i;
1578
1579         /*
1580          * one cache line; long IB headers will spill over into received
1581          * buffer
1582          */
1583         dd->ipath_rcvhdrentsize = 16;
1584         dd->ipath_rcvhdrsize = IPATH_DFLT_RCVHDRSIZE;
1585
1586         /*
1587          * For HT, we allocate a somewhat overly large eager buffer,
1588          * such that we can guarantee that we can receive the largest
1589          * packet that we can send out.  To truly support a 4KB MTU,
1590          * we need to bump this to a large value.  To date, other than
1591          * testing, we have never encountered an HCA that can really
1592          * send 4KB MTU packets, so we do not handle that (we'll get
1593          * errors interrupts if we ever see one).
1594          */
1595         dd->ipath_rcvegrbufsize = dd->ipath_piosize2k;
1596
1597         /*
1598          * the min() check here is currently a nop, but it may not
1599          * always be, depending on just how we do ipath_rcvegrbufsize
1600          */
1601         dd->ipath_ibmaxlen = min(dd->ipath_piosize2k,
1602                                  dd->ipath_rcvegrbufsize);
1603         dd->ipath_init_ibmaxlen = dd->ipath_ibmaxlen;
1604         ipath_ht_tidtemplate(dd);
1605
1606         /*
1607          * zero all the TID entries at startup.  We do this for sanity,
1608          * in case of a previous driver crash of some kind, and also
1609          * because the chip powers up with these memories in an unknown
1610          * state.  Use portcnt, not cfgports, since this is for the
1611          * full chip, not for current (possibly different) configuration
1612          * value.
1613          * Chip Errata bug 6447
1614          */
1615         for (val32 = 0; val32 < dd->ipath_portcnt; val32++)
1616                 ipath_ht_clear_tids(dd, val32);
1617
1618         /*
1619          * write the pbc of each buffer, to be sure it's initialized, then
1620          * cancel all the buffers, and also abort any packets that might
1621          * have been in flight for some reason (the latter is for driver
1622          * unload/reload, but isn't a bad idea at first init).  PIO send
1623          * isn't enabled at this point, so there is no danger of sending
1624          * these out on the wire.
1625          * Chip Errata bug 6610
1626          */
1627         piobuf = (u32 __iomem *) (((char __iomem *)(dd->ipath_kregbase)) +
1628                                   dd->ipath_piobufbase);
1629         pioincr = dd->ipath_palign / sizeof(*piobuf);
1630         for (i = 0; i < dd->ipath_piobcnt2k; i++) {
1631                 /*
1632                  * reasonable word count, just to init pbc
1633                  */
1634                 writel(16, piobuf);
1635                 piobuf += pioincr;
1636         }
1637
1638         ipath_get_eeprom_info(dd);
1639         if (dd->ipath_boardrev == 5) {
1640                 /*
1641                  * Later production QHT7040 has same changes as QHT7140, so
1642                  * can use GPIO interrupts.  They have serial #'s starting
1643                  * with 128, rather than 112.
1644                  */
1645                 if (dd->ipath_serial[0] == '1' &&
1646                     dd->ipath_serial[1] == '2' &&
1647                     dd->ipath_serial[2] == '8')
1648                         dd->ipath_flags |= IPATH_GPIO_INTR;
1649                 else {
1650                         ipath_dev_err(dd, "Unsupported InfiniPath board "
1651                                 "(serial number %.16s)!\n",
1652                                 dd->ipath_serial);
1653                         return 1;
1654                 }
1655         }
1656
1657         if (dd->ipath_minrev >= 4) {
1658                 /* Rev4+ reports extra errors via internal GPIO pins */
1659                 dd->ipath_flags |= IPATH_GPIO_ERRINTRS;
1660                 dd->ipath_gpio_mask |= IPATH_GPIO_ERRINTR_MASK;
1661                 ipath_write_kreg(dd, dd->ipath_kregs->kr_gpio_mask,
1662                                  dd->ipath_gpio_mask);
1663         }
1664
1665         return 0;
1666 }
1667
1668
1669 /**
1670  * ipath_init_ht_get_base_info - set chip-specific flags for user code
1671  * @dd: the infinipath device
1672  * @kbase: ipath_base_info pointer
1673  *
1674  * We set the PCIE flag because the lower bandwidth on PCIe vs
1675  * HyperTransport can affect some user packet algorithms.
1676  */
1677 static int ipath_ht_get_base_info(struct ipath_portdata *pd, void *kbase)
1678 {
1679         struct ipath_base_info *kinfo = kbase;
1680
1681         kinfo->spi_runtime_flags |= IPATH_RUNTIME_HT |
1682                 IPATH_RUNTIME_PIO_REGSWAPPED;
1683
1684         if (pd->port_dd->ipath_minrev < 4)
1685                 kinfo->spi_runtime_flags |= IPATH_RUNTIME_RCVHDR_COPY;
1686
1687         return 0;
1688 }
1689
1690 static void ipath_ht_free_irq(struct ipath_devdata *dd)
1691 {
1692         free_irq(dd->ipath_irq, dd);
1693         ht_destroy_irq(dd->ipath_irq);
1694         dd->ipath_irq = 0;
1695         dd->ipath_intconfig = 0;
1696 }
1697
1698 static struct ipath_message_header *
1699 ipath_ht_get_msgheader(struct ipath_devdata *dd, __le32 *rhf_addr)
1700 {
1701         return (struct ipath_message_header *)
1702                 &rhf_addr[sizeof(u64) / sizeof(u32)];
1703 }
1704
1705 static void ipath_ht_config_ports(struct ipath_devdata *dd, ushort cfgports)
1706 {
1707         dd->ipath_portcnt =
1708                 ipath_read_kreg32(dd, dd->ipath_kregs->kr_portcnt);
1709         dd->ipath_p0_rcvegrcnt =
1710                 ipath_read_kreg32(dd, dd->ipath_kregs->kr_rcvegrcnt);
1711 }
1712
1713 static void ipath_ht_read_counters(struct ipath_devdata *dd,
1714                                    struct infinipath_counters *cntrs)
1715 {
1716         cntrs->LBIntCnt =
1717                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(LBIntCnt));
1718         cntrs->LBFlowStallCnt =
1719                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(LBFlowStallCnt));
1720         cntrs->TxSDmaDescCnt = 0;
1721         cntrs->TxUnsupVLErrCnt =
1722                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxUnsupVLErrCnt));
1723         cntrs->TxDataPktCnt =
1724                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxDataPktCnt));
1725         cntrs->TxFlowPktCnt =
1726                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxFlowPktCnt));
1727         cntrs->TxDwordCnt =
1728                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxDwordCnt));
1729         cntrs->TxLenErrCnt =
1730                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxLenErrCnt));
1731         cntrs->TxMaxMinLenErrCnt =
1732                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxMaxMinLenErrCnt));
1733         cntrs->TxUnderrunCnt =
1734                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxUnderrunCnt));
1735         cntrs->TxFlowStallCnt =
1736                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxFlowStallCnt));
1737         cntrs->TxDroppedPktCnt =
1738                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(TxDroppedPktCnt));
1739         cntrs->RxDroppedPktCnt =
1740                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxDroppedPktCnt));
1741         cntrs->RxDataPktCnt =
1742                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxDataPktCnt));
1743         cntrs->RxFlowPktCnt =
1744                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxFlowPktCnt));
1745         cntrs->RxDwordCnt =
1746                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxDwordCnt));
1747         cntrs->RxLenErrCnt =
1748                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxLenErrCnt));
1749         cntrs->RxMaxMinLenErrCnt =
1750                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxMaxMinLenErrCnt));
1751         cntrs->RxICRCErrCnt =
1752                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxICRCErrCnt));
1753         cntrs->RxVCRCErrCnt =
1754                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxVCRCErrCnt));
1755         cntrs->RxFlowCtrlErrCnt =
1756                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxFlowCtrlErrCnt));
1757         cntrs->RxBadFormatCnt =
1758                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxBadFormatCnt));
1759         cntrs->RxLinkProblemCnt =
1760                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxLinkProblemCnt));
1761         cntrs->RxEBPCnt =
1762                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxEBPCnt));
1763         cntrs->RxLPCRCErrCnt =
1764                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxLPCRCErrCnt));
1765         cntrs->RxBufOvflCnt =
1766                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxBufOvflCnt));
1767         cntrs->RxTIDFullErrCnt =
1768                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxTIDFullErrCnt));
1769         cntrs->RxTIDValidErrCnt =
1770                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxTIDValidErrCnt));
1771         cntrs->RxPKeyMismatchCnt =
1772                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxPKeyMismatchCnt));
1773         cntrs->RxP0HdrEgrOvflCnt =
1774                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP0HdrEgrOvflCnt));
1775         cntrs->RxP1HdrEgrOvflCnt =
1776                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP1HdrEgrOvflCnt));
1777         cntrs->RxP2HdrEgrOvflCnt =
1778                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP2HdrEgrOvflCnt));
1779         cntrs->RxP3HdrEgrOvflCnt =
1780                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP3HdrEgrOvflCnt));
1781         cntrs->RxP4HdrEgrOvflCnt =
1782                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP4HdrEgrOvflCnt));
1783         cntrs->RxP5HdrEgrOvflCnt =
1784                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP5HdrEgrOvflCnt));
1785         cntrs->RxP6HdrEgrOvflCnt =
1786                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP6HdrEgrOvflCnt));
1787         cntrs->RxP7HdrEgrOvflCnt =
1788                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP7HdrEgrOvflCnt));
1789         cntrs->RxP8HdrEgrOvflCnt =
1790                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(RxP8HdrEgrOvflCnt));
1791         cntrs->RxP9HdrEgrOvflCnt = 0;
1792         cntrs->RxP10HdrEgrOvflCnt = 0;
1793         cntrs->RxP11HdrEgrOvflCnt = 0;
1794         cntrs->RxP12HdrEgrOvflCnt = 0;
1795         cntrs->RxP13HdrEgrOvflCnt = 0;
1796         cntrs->RxP14HdrEgrOvflCnt = 0;
1797         cntrs->RxP15HdrEgrOvflCnt = 0;
1798         cntrs->RxP16HdrEgrOvflCnt = 0;
1799         cntrs->IBStatusChangeCnt =
1800                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(IBStatusChangeCnt));
1801         cntrs->IBLinkErrRecoveryCnt =
1802                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(IBLinkErrRecoveryCnt));
1803         cntrs->IBLinkDownedCnt =
1804                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(IBLinkDownedCnt));
1805         cntrs->IBSymbolErrCnt =
1806                 ipath_snap_cntr(dd, IPATH_CREG_OFFSET(IBSymbolErrCnt));
1807         cntrs->RxVL15DroppedPktCnt = 0;
1808         cntrs->RxOtherLocalPhyErrCnt = 0;
1809         cntrs->PcieRetryBufDiagQwordCnt = 0;
1810         cntrs->ExcessBufferOvflCnt = dd->ipath_overrun_thresh_errs;
1811         cntrs->LocalLinkIntegrityErrCnt =
1812                 (dd->ipath_flags & IPATH_GPIO_ERRINTRS) ?
1813                 dd->ipath_lli_errs : dd->ipath_lli_errors;
1814         cntrs->RxVlErrCnt = 0;
1815         cntrs->RxDlidFltrCnt = 0;
1816 }
1817
1818
1819 /* no interrupt fallback for these chips */
1820 static int ipath_ht_nointr_fallback(struct ipath_devdata *dd)
1821 {
1822         return 0;
1823 }
1824
1825
1826 /*
1827  * reset the XGXS (between serdes and IBC).  Slightly less intrusive
1828  * than resetting the IBC or external link state, and useful in some
1829  * cases to cause some retraining.  To do this right, we reset IBC
1830  * as well.
1831  */
1832 static void ipath_ht_xgxs_reset(struct ipath_devdata *dd)
1833 {
1834         u64 val, prev_val;
1835
1836         prev_val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig);
1837         val = prev_val | INFINIPATH_XGXS_RESET;
1838         prev_val &= ~INFINIPATH_XGXS_RESET; /* be sure */
1839         ipath_write_kreg(dd, dd->ipath_kregs->kr_control,
1840                          dd->ipath_control & ~INFINIPATH_C_LINKENABLE);
1841         ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val);
1842         ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
1843         ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, prev_val);
1844         ipath_write_kreg(dd, dd->ipath_kregs->kr_control,
1845                          dd->ipath_control);
1846 }
1847
1848
1849 static int ipath_ht_get_ib_cfg(struct ipath_devdata *dd, int which)
1850 {
1851         int ret;
1852
1853         switch (which) {
1854         case IPATH_IB_CFG_LWID:
1855                 ret = dd->ipath_link_width_active;
1856                 break;
1857         case IPATH_IB_CFG_SPD:
1858                 ret = dd->ipath_link_speed_active;
1859                 break;
1860         case IPATH_IB_CFG_LWID_ENB:
1861                 ret = dd->ipath_link_width_enabled;
1862                 break;
1863         case IPATH_IB_CFG_SPD_ENB:
1864                 ret = dd->ipath_link_speed_enabled;
1865                 break;
1866         default:
1867                 ret =  -ENOTSUPP;
1868                 break;
1869         }
1870         return ret;
1871 }
1872
1873
1874 /* we assume range checking is already done, if needed */
1875 static int ipath_ht_set_ib_cfg(struct ipath_devdata *dd, int which, u32 val)
1876 {
1877         int ret = 0;
1878
1879         if (which == IPATH_IB_CFG_LWID_ENB)
1880                 dd->ipath_link_width_enabled = val;
1881         else if (which == IPATH_IB_CFG_SPD_ENB)
1882                 dd->ipath_link_speed_enabled = val;
1883         else
1884                 ret = -ENOTSUPP;
1885         return ret;
1886 }
1887
1888
1889 static void ipath_ht_config_jint(struct ipath_devdata *dd, u16 a, u16 b)
1890 {
1891 }
1892
1893
1894 static int ipath_ht_ib_updown(struct ipath_devdata *dd, int ibup, u64 ibcs)
1895 {
1896         ipath_setup_ht_setextled(dd, ipath_ib_linkstate(dd, ibcs),
1897                 ipath_ib_linktrstate(dd, ibcs));
1898         return 0;
1899 }
1900
1901
1902 /**
1903  * ipath_init_iba6110_funcs - set up the chip-specific function pointers
1904  * @dd: the infinipath device
1905  *
1906  * This is global, and is called directly at init to set up the
1907  * chip-specific function pointers for later use.
1908  */
1909 void ipath_init_iba6110_funcs(struct ipath_devdata *dd)
1910 {
1911         dd->ipath_f_intrsetup = ipath_ht_intconfig;
1912         dd->ipath_f_bus = ipath_setup_ht_config;
1913         dd->ipath_f_reset = ipath_setup_ht_reset;
1914         dd->ipath_f_get_boardname = ipath_ht_boardname;
1915         dd->ipath_f_init_hwerrors = ipath_ht_init_hwerrors;
1916         dd->ipath_f_early_init = ipath_ht_early_init;
1917         dd->ipath_f_handle_hwerrors = ipath_ht_handle_hwerrors;
1918         dd->ipath_f_quiet_serdes = ipath_ht_quiet_serdes;
1919         dd->ipath_f_bringup_serdes = ipath_ht_bringup_serdes;
1920         dd->ipath_f_clear_tids = ipath_ht_clear_tids;
1921         dd->ipath_f_put_tid = ipath_ht_put_tid;
1922         dd->ipath_f_cleanup = ipath_setup_ht_cleanup;
1923         dd->ipath_f_setextled = ipath_setup_ht_setextled;
1924         dd->ipath_f_get_base_info = ipath_ht_get_base_info;
1925         dd->ipath_f_free_irq = ipath_ht_free_irq;
1926         dd->ipath_f_tidtemplate = ipath_ht_tidtemplate;
1927         dd->ipath_f_intr_fallback = ipath_ht_nointr_fallback;
1928         dd->ipath_f_get_msgheader = ipath_ht_get_msgheader;
1929         dd->ipath_f_config_ports = ipath_ht_config_ports;
1930         dd->ipath_f_read_counters = ipath_ht_read_counters;
1931         dd->ipath_f_xgxs_reset = ipath_ht_xgxs_reset;
1932         dd->ipath_f_get_ib_cfg = ipath_ht_get_ib_cfg;
1933         dd->ipath_f_set_ib_cfg = ipath_ht_set_ib_cfg;
1934         dd->ipath_f_config_jint = ipath_ht_config_jint;
1935         dd->ipath_f_ib_updown = ipath_ht_ib_updown;
1936
1937         /*
1938          * initialize chip-specific variables
1939          */
1940         ipath_init_ht_variables(dd);
1941 }