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Staging: zram: fix up some sysfs attribute permissions
[zen-stable.git] / drivers / infiniband / hw / qib / qib_iba7220.c
blob6fd8d74e739286b81a196820d6a6330ff21f9400
1 /*
2 * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation.
3 * All rights reserved.
4 * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34 /*
35 * This file contains all of the code that is specific to the
36 * QLogic_IB 7220 chip (except that specific to the SerDes)
37 */
38
39 #include <linux/interrupt.h>
40 #include <linux/pci.h>
41 #include <linux/delay.h>
42 #include <linux/io.h>
43 #include <rdma/ib_verbs.h>
44
45 #include "qib.h"
46 #include "qib_7220.h"
47
48 static void qib_setup_7220_setextled(struct qib_pportdata *, u32);
49 static void qib_7220_handle_hwerrors(struct qib_devdata *, char *, size_t);
50 static void sendctrl_7220_mod(struct qib_pportdata *ppd, u32 op);
51 static u32 qib_7220_iblink_state(u64);
52 static u8 qib_7220_phys_portstate(u64);
53 static void qib_sdma_update_7220_tail(struct qib_pportdata *, u16);
54 static void qib_set_ib_7220_lstate(struct qib_pportdata *, u16, u16);
55
56 /*
57 * This file contains almost all the chip-specific register information and
58 * access functions for the QLogic QLogic_IB 7220 PCI-Express chip, with the
59 * exception of SerDes support, which in in qib_sd7220.c.
60 */
61
62 /* Below uses machine-generated qib_chipnum_regs.h file */
63 #define KREG_IDX(regname) (QIB_7220_##regname##_OFFS / sizeof(u64))
64
65 /* Use defines to tie machine-generated names to lower-case names */
66 #define kr_control KREG_IDX(Control)
67 #define kr_counterregbase KREG_IDX(CntrRegBase)
68 #define kr_errclear KREG_IDX(ErrClear)
69 #define kr_errmask KREG_IDX(ErrMask)
70 #define kr_errstatus KREG_IDX(ErrStatus)
71 #define kr_extctrl KREG_IDX(EXTCtrl)
72 #define kr_extstatus KREG_IDX(EXTStatus)
73 #define kr_gpio_clear KREG_IDX(GPIOClear)
74 #define kr_gpio_mask KREG_IDX(GPIOMask)
75 #define kr_gpio_out KREG_IDX(GPIOOut)
76 #define kr_gpio_status KREG_IDX(GPIOStatus)
77 #define kr_hrtbt_guid KREG_IDX(HRTBT_GUID)
78 #define kr_hwdiagctrl KREG_IDX(HwDiagCtrl)
79 #define kr_hwerrclear KREG_IDX(HwErrClear)
80 #define kr_hwerrmask KREG_IDX(HwErrMask)
81 #define kr_hwerrstatus KREG_IDX(HwErrStatus)
82 #define kr_ibcctrl KREG_IDX(IBCCtrl)
83 #define kr_ibcddrctrl KREG_IDX(IBCDDRCtrl)
84 #define kr_ibcddrstatus KREG_IDX(IBCDDRStatus)
85 #define kr_ibcstatus KREG_IDX(IBCStatus)
86 #define kr_ibserdesctrl KREG_IDX(IBSerDesCtrl)
87 #define kr_intclear KREG_IDX(IntClear)
88 #define kr_intmask KREG_IDX(IntMask)
89 #define kr_intstatus KREG_IDX(IntStatus)
90 #define kr_ncmodectrl KREG_IDX(IBNCModeCtrl)
91 #define kr_palign KREG_IDX(PageAlign)
92 #define kr_partitionkey KREG_IDX(RcvPartitionKey)
93 #define kr_portcnt KREG_IDX(PortCnt)
94 #define kr_rcvbthqp KREG_IDX(RcvBTHQP)
95 #define kr_rcvctrl KREG_IDX(RcvCtrl)
96 #define kr_rcvegrbase KREG_IDX(RcvEgrBase)
97 #define kr_rcvegrcnt KREG_IDX(RcvEgrCnt)
98 #define kr_rcvhdrcnt KREG_IDX(RcvHdrCnt)
99 #define kr_rcvhdrentsize KREG_IDX(RcvHdrEntSize)
100 #define kr_rcvhdrsize KREG_IDX(RcvHdrSize)
101 #define kr_rcvpktledcnt KREG_IDX(RcvPktLEDCnt)
102 #define kr_rcvtidbase KREG_IDX(RcvTIDBase)
103 #define kr_rcvtidcnt KREG_IDX(RcvTIDCnt)
104 #define kr_revision KREG_IDX(Revision)
105 #define kr_scratch KREG_IDX(Scratch)
106 #define kr_sendbuffererror KREG_IDX(SendBufErr0)
107 #define kr_sendctrl KREG_IDX(SendCtrl)
108 #define kr_senddmabase KREG_IDX(SendDmaBase)
109 #define kr_senddmabufmask0 KREG_IDX(SendDmaBufMask0)
110 #define kr_senddmabufmask1 (KREG_IDX(SendDmaBufMask0) + 1)
111 #define kr_senddmabufmask2 (KREG_IDX(SendDmaBufMask0) + 2)
112 #define kr_senddmahead KREG_IDX(SendDmaHead)
113 #define kr_senddmaheadaddr KREG_IDX(SendDmaHeadAddr)
114 #define kr_senddmalengen KREG_IDX(SendDmaLenGen)
115 #define kr_senddmastatus KREG_IDX(SendDmaStatus)
116 #define kr_senddmatail KREG_IDX(SendDmaTail)
117 #define kr_sendpioavailaddr KREG_IDX(SendBufAvailAddr)
118 #define kr_sendpiobufbase KREG_IDX(SendBufBase)
119 #define kr_sendpiobufcnt KREG_IDX(SendBufCnt)
120 #define kr_sendpiosize KREG_IDX(SendBufSize)
121 #define kr_sendregbase KREG_IDX(SendRegBase)
122 #define kr_userregbase KREG_IDX(UserRegBase)
123 #define kr_xgxs_cfg KREG_IDX(XGXSCfg)
124
125 /* These must only be written via qib_write_kreg_ctxt() */
126 #define kr_rcvhdraddr KREG_IDX(RcvHdrAddr0)
127 #define kr_rcvhdrtailaddr KREG_IDX(RcvHdrTailAddr0)
128
129
130 #define CREG_IDX(regname) ((QIB_7220_##regname##_OFFS - \
131 QIB_7220_LBIntCnt_OFFS) / sizeof(u64))
132
133 #define cr_badformat CREG_IDX(RxVersionErrCnt)
134 #define cr_erricrc CREG_IDX(RxICRCErrCnt)
135 #define cr_errlink CREG_IDX(RxLinkMalformCnt)
136 #define cr_errlpcrc CREG_IDX(RxLPCRCErrCnt)
137 #define cr_errpkey CREG_IDX(RxPKeyMismatchCnt)
138 #define cr_rcvflowctrl_err CREG_IDX(RxFlowCtrlViolCnt)
139 #define cr_err_rlen CREG_IDX(RxLenErrCnt)
140 #define cr_errslen CREG_IDX(TxLenErrCnt)
141 #define cr_errtidfull CREG_IDX(RxTIDFullErrCnt)
142 #define cr_errtidvalid CREG_IDX(RxTIDValidErrCnt)
143 #define cr_errvcrc CREG_IDX(RxVCRCErrCnt)
144 #define cr_ibstatuschange CREG_IDX(IBStatusChangeCnt)
145 #define cr_lbint CREG_IDX(LBIntCnt)
146 #define cr_invalidrlen CREG_IDX(RxMaxMinLenErrCnt)
147 #define cr_invalidslen CREG_IDX(TxMaxMinLenErrCnt)
148 #define cr_lbflowstall CREG_IDX(LBFlowStallCnt)
149 #define cr_pktrcv CREG_IDX(RxDataPktCnt)
150 #define cr_pktrcvflowctrl CREG_IDX(RxFlowPktCnt)
151 #define cr_pktsend CREG_IDX(TxDataPktCnt)
152 #define cr_pktsendflow CREG_IDX(TxFlowPktCnt)
153 #define cr_portovfl CREG_IDX(RxP0HdrEgrOvflCnt)
154 #define cr_rcvebp CREG_IDX(RxEBPCnt)
155 #define cr_rcvovfl CREG_IDX(RxBufOvflCnt)
156 #define cr_senddropped CREG_IDX(TxDroppedPktCnt)
157 #define cr_sendstall CREG_IDX(TxFlowStallCnt)
158 #define cr_sendunderrun CREG_IDX(TxUnderrunCnt)
159 #define cr_wordrcv CREG_IDX(RxDwordCnt)
160 #define cr_wordsend CREG_IDX(TxDwordCnt)
161 #define cr_txunsupvl CREG_IDX(TxUnsupVLErrCnt)
162 #define cr_rxdroppkt CREG_IDX(RxDroppedPktCnt)
163 #define cr_iblinkerrrecov CREG_IDX(IBLinkErrRecoveryCnt)
164 #define cr_iblinkdown CREG_IDX(IBLinkDownedCnt)
165 #define cr_ibsymbolerr CREG_IDX(IBSymbolErrCnt)
166 #define cr_vl15droppedpkt CREG_IDX(RxVL15DroppedPktCnt)
167 #define cr_rxotherlocalphyerr CREG_IDX(RxOtherLocalPhyErrCnt)
168 #define cr_excessbufferovfl CREG_IDX(ExcessBufferOvflCnt)
169 #define cr_locallinkintegrityerr CREG_IDX(LocalLinkIntegrityErrCnt)
170 #define cr_rxvlerr CREG_IDX(RxVlErrCnt)
171 #define cr_rxdlidfltr CREG_IDX(RxDlidFltrCnt)
172 #define cr_psstat CREG_IDX(PSStat)
173 #define cr_psstart CREG_IDX(PSStart)
174 #define cr_psinterval CREG_IDX(PSInterval)
175 #define cr_psrcvdatacount CREG_IDX(PSRcvDataCount)
176 #define cr_psrcvpktscount CREG_IDX(PSRcvPktsCount)
177 #define cr_psxmitdatacount CREG_IDX(PSXmitDataCount)
178 #define cr_psxmitpktscount CREG_IDX(PSXmitPktsCount)
179 #define cr_psxmitwaitcount CREG_IDX(PSXmitWaitCount)
180 #define cr_txsdmadesc CREG_IDX(TxSDmaDescCnt)
181 #define cr_pcieretrydiag CREG_IDX(PcieRetryBufDiagQwordCnt)
182
183 #define SYM_RMASK(regname, fldname) ((u64) \
184 QIB_7220_##regname##_##fldname##_RMASK)
185 #define SYM_MASK(regname, fldname) ((u64) \
186 QIB_7220_##regname##_##fldname##_RMASK << \
187 QIB_7220_##regname##_##fldname##_LSB)
188 #define SYM_LSB(regname, fldname) (QIB_7220_##regname##_##fldname##_LSB)
189 #define SYM_FIELD(value, regname, fldname) ((u64) \
190 (((value) >> SYM_LSB(regname, fldname)) & \
191 SYM_RMASK(regname, fldname)))
192 #define ERR_MASK(fldname) SYM_MASK(ErrMask, fldname##Mask)
193 #define HWE_MASK(fldname) SYM_MASK(HwErrMask, fldname##Mask)
194
195 /* ibcctrl bits */
196 #define QLOGIC_IB_IBCC_LINKINITCMD_DISABLE 1
197 /* cycle through TS1/TS2 till OK */
198 #define QLOGIC_IB_IBCC_LINKINITCMD_POLL 2
199 /* wait for TS1, then go on */
200 #define QLOGIC_IB_IBCC_LINKINITCMD_SLEEP 3
201 #define QLOGIC_IB_IBCC_LINKINITCMD_SHIFT 16
202
203 #define QLOGIC_IB_IBCC_LINKCMD_DOWN 1 /* move to 0x11 */
204 #define QLOGIC_IB_IBCC_LINKCMD_ARMED 2 /* move to 0x21 */
205 #define QLOGIC_IB_IBCC_LINKCMD_ACTIVE 3 /* move to 0x31 */
206
207 #define BLOB_7220_IBCHG 0x81
208
209 /*
210 * We could have a single register get/put routine, that takes a group type,
211 * but this is somewhat clearer and cleaner. It also gives us some error
212 * checking. 64 bit register reads should always work, but are inefficient
213 * on opteron (the northbridge always generates 2 separate HT 32 bit reads),
214 * so we use kreg32 wherever possible. User register and counter register
215 * reads are always 32 bit reads, so only one form of those routines.
216 */
217
218 /**
219 * qib_read_ureg32 - read 32-bit virtualized per-context register
220 * @dd: device
221 * @regno: register number
222 * @ctxt: context number
223 *
224 * Return the contents of a register that is virtualized to be per context.
225 * Returns -1 on errors (not distinguishable from valid contents at
226 * runtime; we may add a separate error variable at some point).
227 */
228 static inline u32 qib_read_ureg32(const struct qib_devdata *dd,
229 enum qib_ureg regno, int ctxt)
230 {
231 if (!dd->kregbase || !(dd->flags & QIB_PRESENT))
232 return 0;
233
234 if (dd->userbase)
235 return readl(regno + (u64 __iomem *)
236 ((char __iomem *)dd->userbase +
237 dd->ureg_align * ctxt));
238 else
239 return readl(regno + (u64 __iomem *)
240 (dd->uregbase +
241 (char __iomem *)dd->kregbase +
242 dd->ureg_align * ctxt));
243 }
244
245 /**
246 * qib_write_ureg - write 32-bit virtualized per-context register
247 * @dd: device
248 * @regno: register number
249 * @value: value
250 * @ctxt: context
251 *
252 * Write the contents of a register that is virtualized to be per context.
253 */
254 static inline void qib_write_ureg(const struct qib_devdata *dd,
255 enum qib_ureg regno, u64 value, int ctxt)
256 {
257 u64 __iomem *ubase;
258
259 if (dd->userbase)
260 ubase = (u64 __iomem *)
261 ((char __iomem *) dd->userbase +
262 dd->ureg_align * ctxt);
263 else
264 ubase = (u64 __iomem *)
265 (dd->uregbase +
266 (char __iomem *) dd->kregbase +
267 dd->ureg_align * ctxt);
268
269 if (dd->kregbase && (dd->flags & QIB_PRESENT))
270 writeq(value, &ubase[regno]);
271 }
272
273 /**
274 * qib_write_kreg_ctxt - write a device's per-ctxt 64-bit kernel register
275 * @dd: the qlogic_ib device
276 * @regno: the register number to write
277 * @ctxt: the context containing the register
278 * @value: the value to write
279 */
280 static inline void qib_write_kreg_ctxt(const struct qib_devdata *dd,
281 const u16 regno, unsigned ctxt,
282 u64 value)
283 {
284 qib_write_kreg(dd, regno + ctxt, value);
285 }
286
287 static inline void write_7220_creg(const struct qib_devdata *dd,
288 u16 regno, u64 value)
289 {
290 if (dd->cspec->cregbase && (dd->flags & QIB_PRESENT))
291 writeq(value, &dd->cspec->cregbase[regno]);
292 }
293
294 static inline u64 read_7220_creg(const struct qib_devdata *dd, u16 regno)
295 {
296 if (!dd->cspec->cregbase || !(dd->flags & QIB_PRESENT))
297 return 0;
298 return readq(&dd->cspec->cregbase[regno]);
299 }
300
301 static inline u32 read_7220_creg32(const struct qib_devdata *dd, u16 regno)
302 {
303 if (!dd->cspec->cregbase || !(dd->flags & QIB_PRESENT))
304 return 0;
305 return readl(&dd->cspec->cregbase[regno]);
306 }
307
308 /* kr_revision bits */
309 #define QLOGIC_IB_R_EMULATORREV_MASK ((1ULL << 22) - 1)
310 #define QLOGIC_IB_R_EMULATORREV_SHIFT 40
311
312 /* kr_control bits */
313 #define QLOGIC_IB_C_RESET (1U << 7)
314
315 /* kr_intstatus, kr_intclear, kr_intmask bits */
316 #define QLOGIC_IB_I_RCVURG_MASK ((1ULL << 17) - 1)
317 #define QLOGIC_IB_I_RCVURG_SHIFT 32
318 #define QLOGIC_IB_I_RCVAVAIL_MASK ((1ULL << 17) - 1)
319 #define QLOGIC_IB_I_RCVAVAIL_SHIFT 0
320 #define QLOGIC_IB_I_SERDESTRIMDONE (1ULL << 27)
321
322 #define QLOGIC_IB_C_FREEZEMODE 0x00000002
323 #define QLOGIC_IB_C_LINKENABLE 0x00000004
324
325 #define QLOGIC_IB_I_SDMAINT 0x8000000000000000ULL
326 #define QLOGIC_IB_I_SDMADISABLED 0x4000000000000000ULL
327 #define QLOGIC_IB_I_ERROR 0x0000000080000000ULL
328 #define QLOGIC_IB_I_SPIOSENT 0x0000000040000000ULL
329 #define QLOGIC_IB_I_SPIOBUFAVAIL 0x0000000020000000ULL
330 #define QLOGIC_IB_I_GPIO 0x0000000010000000ULL
331
332 /* variables for sanity checking interrupt and errors */
333 #define QLOGIC_IB_I_BITSEXTANT \
334 (QLOGIC_IB_I_SDMAINT | QLOGIC_IB_I_SDMADISABLED | \
335 (QLOGIC_IB_I_RCVURG_MASK << QLOGIC_IB_I_RCVURG_SHIFT) | \
336 (QLOGIC_IB_I_RCVAVAIL_MASK << \
337 QLOGIC_IB_I_RCVAVAIL_SHIFT) | \
338 QLOGIC_IB_I_ERROR | QLOGIC_IB_I_SPIOSENT | \
339 QLOGIC_IB_I_SPIOBUFAVAIL | QLOGIC_IB_I_GPIO | \
340 QLOGIC_IB_I_SERDESTRIMDONE)
341
342 #define IB_HWE_BITSEXTANT \
343 (HWE_MASK(RXEMemParityErr) | \
344 HWE_MASK(TXEMemParityErr) | \
345 (QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK << \
346 QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT) | \
347 QLOGIC_IB_HWE_PCIE1PLLFAILED | \
348 QLOGIC_IB_HWE_PCIE0PLLFAILED | \
349 QLOGIC_IB_HWE_PCIEPOISONEDTLP | \
350 QLOGIC_IB_HWE_PCIECPLTIMEOUT | \
351 QLOGIC_IB_HWE_PCIEBUSPARITYXTLH | \
352 QLOGIC_IB_HWE_PCIEBUSPARITYXADM | \
353 QLOGIC_IB_HWE_PCIEBUSPARITYRADM | \
354 HWE_MASK(PowerOnBISTFailed) | \
355 QLOGIC_IB_HWE_COREPLL_FBSLIP | \
356 QLOGIC_IB_HWE_COREPLL_RFSLIP | \
357 QLOGIC_IB_HWE_SERDESPLLFAILED | \
358 HWE_MASK(IBCBusToSPCParityErr) | \
359 HWE_MASK(IBCBusFromSPCParityErr) | \
360 QLOGIC_IB_HWE_PCIECPLDATAQUEUEERR | \
361 QLOGIC_IB_HWE_PCIECPLHDRQUEUEERR | \
362 QLOGIC_IB_HWE_SDMAMEMREADERR | \
363 QLOGIC_IB_HWE_CLK_UC_PLLNOTLOCKED | \
364 QLOGIC_IB_HWE_PCIESERDESQ0PCLKNOTDETECT | \
365 QLOGIC_IB_HWE_PCIESERDESQ1PCLKNOTDETECT | \
366 QLOGIC_IB_HWE_PCIESERDESQ2PCLKNOTDETECT | \
367 QLOGIC_IB_HWE_PCIESERDESQ3PCLKNOTDETECT | \
368 QLOGIC_IB_HWE_DDSRXEQMEMORYPARITYERR | \
369 QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR | \
370 QLOGIC_IB_HWE_PCIE_UC_OCT0MEMORYPARITYERR | \
371 QLOGIC_IB_HWE_PCIE_UC_OCT1MEMORYPARITYERR)
372
373 #define IB_E_BITSEXTANT \
374 (ERR_MASK(RcvFormatErr) | ERR_MASK(RcvVCRCErr) | \
375 ERR_MASK(RcvICRCErr) | ERR_MASK(RcvMinPktLenErr) | \
376 ERR_MASK(RcvMaxPktLenErr) | ERR_MASK(RcvLongPktLenErr) | \
377 ERR_MASK(RcvShortPktLenErr) | ERR_MASK(RcvUnexpectedCharErr) | \
378 ERR_MASK(RcvUnsupportedVLErr) | ERR_MASK(RcvEBPErr) | \
379 ERR_MASK(RcvIBFlowErr) | ERR_MASK(RcvBadVersionErr) | \
380 ERR_MASK(RcvEgrFullErr) | ERR_MASK(RcvHdrFullErr) | \
381 ERR_MASK(RcvBadTidErr) | ERR_MASK(RcvHdrLenErr) | \
382 ERR_MASK(RcvHdrErr) | ERR_MASK(RcvIBLostLinkErr) | \
383 ERR_MASK(SendSpecialTriggerErr) | \
384 ERR_MASK(SDmaDisabledErr) | ERR_MASK(SendMinPktLenErr) | \
385 ERR_MASK(SendMaxPktLenErr) | ERR_MASK(SendUnderRunErr) | \
386 ERR_MASK(SendPktLenErr) | ERR_MASK(SendDroppedSmpPktErr) | \
387 ERR_MASK(SendDroppedDataPktErr) | \
388 ERR_MASK(SendPioArmLaunchErr) | \
389 ERR_MASK(SendUnexpectedPktNumErr) | \
390 ERR_MASK(SendUnsupportedVLErr) | ERR_MASK(SendBufMisuseErr) | \
391 ERR_MASK(SDmaGenMismatchErr) | ERR_MASK(SDmaOutOfBoundErr) | \
392 ERR_MASK(SDmaTailOutOfBoundErr) | ERR_MASK(SDmaBaseErr) | \
393 ERR_MASK(SDma1stDescErr) | ERR_MASK(SDmaRpyTagErr) | \
394 ERR_MASK(SDmaDwEnErr) | ERR_MASK(SDmaMissingDwErr) | \
395 ERR_MASK(SDmaUnexpDataErr) | \
396 ERR_MASK(IBStatusChanged) | ERR_MASK(InvalidAddrErr) | \
397 ERR_MASK(ResetNegated) | ERR_MASK(HardwareErr) | \
398 ERR_MASK(SDmaDescAddrMisalignErr) | \
399 ERR_MASK(InvalidEEPCmd))
400
401 /* kr_hwerrclear, kr_hwerrmask, kr_hwerrstatus, bits */
402 #define QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK 0x00000000000000ffULL
403 #define QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT 0
404 #define QLOGIC_IB_HWE_PCIEPOISONEDTLP 0x0000000010000000ULL
405 #define QLOGIC_IB_HWE_PCIECPLTIMEOUT 0x0000000020000000ULL
406 #define QLOGIC_IB_HWE_PCIEBUSPARITYXTLH 0x0000000040000000ULL
407 #define QLOGIC_IB_HWE_PCIEBUSPARITYXADM 0x0000000080000000ULL
408 #define QLOGIC_IB_HWE_PCIEBUSPARITYRADM 0x0000000100000000ULL
409 #define QLOGIC_IB_HWE_COREPLL_FBSLIP 0x0080000000000000ULL
410 #define QLOGIC_IB_HWE_COREPLL_RFSLIP 0x0100000000000000ULL
411 #define QLOGIC_IB_HWE_PCIE1PLLFAILED 0x0400000000000000ULL
412 #define QLOGIC_IB_HWE_PCIE0PLLFAILED 0x0800000000000000ULL
413 #define QLOGIC_IB_HWE_SERDESPLLFAILED 0x1000000000000000ULL
414 /* specific to this chip */
415 #define QLOGIC_IB_HWE_PCIECPLDATAQUEUEERR 0x0000000000000040ULL
416 #define QLOGIC_IB_HWE_PCIECPLHDRQUEUEERR 0x0000000000000080ULL
417 #define QLOGIC_IB_HWE_SDMAMEMREADERR 0x0000000010000000ULL
418 #define QLOGIC_IB_HWE_CLK_UC_PLLNOTLOCKED 0x2000000000000000ULL
419 #define QLOGIC_IB_HWE_PCIESERDESQ0PCLKNOTDETECT 0x0100000000000000ULL
420 #define QLOGIC_IB_HWE_PCIESERDESQ1PCLKNOTDETECT 0x0200000000000000ULL
421 #define QLOGIC_IB_HWE_PCIESERDESQ2PCLKNOTDETECT 0x0400000000000000ULL
422 #define QLOGIC_IB_HWE_PCIESERDESQ3PCLKNOTDETECT 0x0800000000000000ULL
423 #define QLOGIC_IB_HWE_DDSRXEQMEMORYPARITYERR 0x0000008000000000ULL
424 #define QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR 0x0000004000000000ULL
425 #define QLOGIC_IB_HWE_PCIE_UC_OCT0MEMORYPARITYERR 0x0000001000000000ULL
426 #define QLOGIC_IB_HWE_PCIE_UC_OCT1MEMORYPARITYERR 0x0000002000000000ULL
427
428 #define IBA7220_IBCC_LINKCMD_SHIFT 19
429
430 /* kr_ibcddrctrl bits */
431 #define IBA7220_IBC_DLIDLMC_MASK 0xFFFFFFFFUL
432 #define IBA7220_IBC_DLIDLMC_SHIFT 32
433
434 #define IBA7220_IBC_HRTBT_MASK (SYM_RMASK(IBCDDRCtrl, HRTBT_AUTO) | \
435 SYM_RMASK(IBCDDRCtrl, HRTBT_ENB))
436 #define IBA7220_IBC_HRTBT_SHIFT SYM_LSB(IBCDDRCtrl, HRTBT_ENB)
437
438 #define IBA7220_IBC_LANE_REV_SUPPORTED (1<<8)
439 #define IBA7220_IBC_LREV_MASK 1
440 #define IBA7220_IBC_LREV_SHIFT 8
441 #define IBA7220_IBC_RXPOL_MASK 1
442 #define IBA7220_IBC_RXPOL_SHIFT 7
443 #define IBA7220_IBC_WIDTH_SHIFT 5
444 #define IBA7220_IBC_WIDTH_MASK 0x3
445 #define IBA7220_IBC_WIDTH_1X_ONLY (0 << IBA7220_IBC_WIDTH_SHIFT)
446 #define IBA7220_IBC_WIDTH_4X_ONLY (1 << IBA7220_IBC_WIDTH_SHIFT)
447 #define IBA7220_IBC_WIDTH_AUTONEG (2 << IBA7220_IBC_WIDTH_SHIFT)
448 #define IBA7220_IBC_SPEED_AUTONEG (1 << 1)
449 #define IBA7220_IBC_SPEED_SDR (1 << 2)
450 #define IBA7220_IBC_SPEED_DDR (1 << 3)
451 #define IBA7220_IBC_SPEED_AUTONEG_MASK (0x7 << 1)
452 #define IBA7220_IBC_IBTA_1_2_MASK (1)
453
454 /* kr_ibcddrstatus */
455 /* link latency shift is 0, don't bother defining */
456 #define IBA7220_DDRSTAT_LINKLAT_MASK 0x3ffffff
457
458 /* kr_extstatus bits */
459 #define QLOGIC_IB_EXTS_FREQSEL 0x2
460 #define QLOGIC_IB_EXTS_SERDESSEL 0x4
461 #define QLOGIC_IB_EXTS_MEMBIST_ENDTEST 0x0000000000004000
462 #define QLOGIC_IB_EXTS_MEMBIST_DISABLED 0x0000000000008000
463
464 /* kr_xgxsconfig bits */
465 #define QLOGIC_IB_XGXS_RESET 0x5ULL
466 #define QLOGIC_IB_XGXS_FC_SAFE (1ULL << 63)
467
468 /* kr_rcvpktledcnt */
469 #define IBA7220_LEDBLINK_ON_SHIFT 32 /* 4ns period on after packet */
470 #define IBA7220_LEDBLINK_OFF_SHIFT 0 /* 4ns period off before next on */
471
472 #define _QIB_GPIO_SDA_NUM 1
473 #define _QIB_GPIO_SCL_NUM 0
474 #define QIB_TWSI_EEPROM_DEV 0xA2 /* All Production 7220 cards. */
475 #define QIB_TWSI_TEMP_DEV 0x98
476
477 /* HW counter clock is at 4nsec */
478 #define QIB_7220_PSXMITWAIT_CHECK_RATE 4000
479
480 #define IBA7220_R_INTRAVAIL_SHIFT 17
481 #define IBA7220_R_PKEY_DIS_SHIFT 34
482 #define IBA7220_R_TAILUPD_SHIFT 35
483 #define IBA7220_R_CTXTCFG_SHIFT 36
484
485 #define IBA7220_HDRHEAD_PKTINT_SHIFT 32 /* interrupt cnt in upper 32 bits */
486
487 /*
488 * the size bits give us 2^N, in KB units. 0 marks as invalid,
489 * and 7 is reserved. We currently use only 2KB and 4KB
490 */
491 #define IBA7220_TID_SZ_SHIFT 37 /* shift to 3bit size selector */
492 #define IBA7220_TID_SZ_2K (1UL << IBA7220_TID_SZ_SHIFT) /* 2KB */
493 #define IBA7220_TID_SZ_4K (2UL << IBA7220_TID_SZ_SHIFT) /* 4KB */
494 #define IBA7220_TID_PA_SHIFT 11U /* TID addr in chip stored w/o low bits */
495 #define PBC_7220_VL15_SEND (1ULL << 63) /* pbc; VL15, no credit check */
496 #define PBC_7220_VL15_SEND_CTRL (1ULL << 31) /* control version of same */
497
498 #define AUTONEG_TRIES 5 /* sequential retries to negotiate DDR */
499
500 /* packet rate matching delay multiplier */
501 static u8 rate_to_delay[2][2] = {
502 /* 1x, 4x */
503 { 8, 2 }, /* SDR */
504 { 4, 1 } /* DDR */
505 };
506
507 static u8 ib_rate_to_delay[IB_RATE_120_GBPS + 1] = {
508 [IB_RATE_2_5_GBPS] = 8,
509 [IB_RATE_5_GBPS] = 4,
510 [IB_RATE_10_GBPS] = 2,
511 [IB_RATE_20_GBPS] = 1
512 };
513
514 #define IBA7220_LINKSPEED_SHIFT SYM_LSB(IBCStatus, LinkSpeedActive)
515 #define IBA7220_LINKWIDTH_SHIFT SYM_LSB(IBCStatus, LinkWidthActive)
516
517 /* link training states, from IBC */
518 #define IB_7220_LT_STATE_DISABLED 0x00
519 #define IB_7220_LT_STATE_LINKUP 0x01
520 #define IB_7220_LT_STATE_POLLACTIVE 0x02
521 #define IB_7220_LT_STATE_POLLQUIET 0x03
522 #define IB_7220_LT_STATE_SLEEPDELAY 0x04
523 #define IB_7220_LT_STATE_SLEEPQUIET 0x05
524 #define IB_7220_LT_STATE_CFGDEBOUNCE 0x08
525 #define IB_7220_LT_STATE_CFGRCVFCFG 0x09
526 #define IB_7220_LT_STATE_CFGWAITRMT 0x0a
527 #define IB_7220_LT_STATE_CFGIDLE 0x0b
528 #define IB_7220_LT_STATE_RECOVERRETRAIN 0x0c
529 #define IB_7220_LT_STATE_RECOVERWAITRMT 0x0e
530 #define IB_7220_LT_STATE_RECOVERIDLE 0x0f
531
532 /* link state machine states from IBC */
533 #define IB_7220_L_STATE_DOWN 0x0
534 #define IB_7220_L_STATE_INIT 0x1
535 #define IB_7220_L_STATE_ARM 0x2
536 #define IB_7220_L_STATE_ACTIVE 0x3
537 #define IB_7220_L_STATE_ACT_DEFER 0x4
538
539 static const u8 qib_7220_physportstate[0x20] = {
540 [IB_7220_LT_STATE_DISABLED] = IB_PHYSPORTSTATE_DISABLED,
541 [IB_7220_LT_STATE_LINKUP] = IB_PHYSPORTSTATE_LINKUP,
542 [IB_7220_LT_STATE_POLLACTIVE] = IB_PHYSPORTSTATE_POLL,
543 [IB_7220_LT_STATE_POLLQUIET] = IB_PHYSPORTSTATE_POLL,
544 [IB_7220_LT_STATE_SLEEPDELAY] = IB_PHYSPORTSTATE_SLEEP,
545 [IB_7220_LT_STATE_SLEEPQUIET] = IB_PHYSPORTSTATE_SLEEP,
546 [IB_7220_LT_STATE_CFGDEBOUNCE] =
547 IB_PHYSPORTSTATE_CFG_TRAIN,
548 [IB_7220_LT_STATE_CFGRCVFCFG] =
549 IB_PHYSPORTSTATE_CFG_TRAIN,
550 [IB_7220_LT_STATE_CFGWAITRMT] =
551 IB_PHYSPORTSTATE_CFG_TRAIN,
552 [IB_7220_LT_STATE_CFGIDLE] = IB_PHYSPORTSTATE_CFG_TRAIN,
553 [IB_7220_LT_STATE_RECOVERRETRAIN] =
554 IB_PHYSPORTSTATE_LINK_ERR_RECOVER,
555 [IB_7220_LT_STATE_RECOVERWAITRMT] =
556 IB_PHYSPORTSTATE_LINK_ERR_RECOVER,
557 [IB_7220_LT_STATE_RECOVERIDLE] =
558 IB_PHYSPORTSTATE_LINK_ERR_RECOVER,
559 [0x10] = IB_PHYSPORTSTATE_CFG_TRAIN,
560 [0x11] = IB_PHYSPORTSTATE_CFG_TRAIN,
561 [0x12] = IB_PHYSPORTSTATE_CFG_TRAIN,
562 [0x13] = IB_PHYSPORTSTATE_CFG_TRAIN,
563 [0x14] = IB_PHYSPORTSTATE_CFG_TRAIN,
564 [0x15] = IB_PHYSPORTSTATE_CFG_TRAIN,
565 [0x16] = IB_PHYSPORTSTATE_CFG_TRAIN,
566 [0x17] = IB_PHYSPORTSTATE_CFG_TRAIN
567 };
568
569 int qib_special_trigger;
570 module_param_named(special_trigger, qib_special_trigger, int, S_IRUGO);
571 MODULE_PARM_DESC(special_trigger, "Enable SpecialTrigger arm/launch");
572
573 #define IBCBUSFRSPCPARITYERR HWE_MASK(IBCBusFromSPCParityErr)
574 #define IBCBUSTOSPCPARITYERR HWE_MASK(IBCBusToSPCParityErr)
575
576 #define SYM_MASK_BIT(regname, fldname, bit) ((u64) \
577 (1ULL << (SYM_LSB(regname, fldname) + (bit))))
578
579 #define TXEMEMPARITYERR_PIOBUF \
580 SYM_MASK_BIT(HwErrMask, TXEMemParityErrMask, 0)
581 #define TXEMEMPARITYERR_PIOPBC \
582 SYM_MASK_BIT(HwErrMask, TXEMemParityErrMask, 1)
583 #define TXEMEMPARITYERR_PIOLAUNCHFIFO \
584 SYM_MASK_BIT(HwErrMask, TXEMemParityErrMask, 2)
585
586 #define RXEMEMPARITYERR_RCVBUF \
587 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 0)
588 #define RXEMEMPARITYERR_LOOKUPQ \
589 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 1)
590 #define RXEMEMPARITYERR_EXPTID \
591 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 2)
592 #define RXEMEMPARITYERR_EAGERTID \
593 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 3)
594 #define RXEMEMPARITYERR_FLAGBUF \
595 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 4)
596 #define RXEMEMPARITYERR_DATAINFO \
597 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 5)
598 #define RXEMEMPARITYERR_HDRINFO \
599 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 6)
600
601 /* 7220 specific hardware errors... */
602 static const struct qib_hwerror_msgs qib_7220_hwerror_msgs[] = {
603 /* generic hardware errors */
604 QLOGIC_IB_HWE_MSG(IBCBUSFRSPCPARITYERR, "QIB2IB Parity"),
605 QLOGIC_IB_HWE_MSG(IBCBUSTOSPCPARITYERR, "IB2QIB Parity"),
606
607 QLOGIC_IB_HWE_MSG(TXEMEMPARITYERR_PIOBUF,
608 "TXE PIOBUF Memory Parity"),
609 QLOGIC_IB_HWE_MSG(TXEMEMPARITYERR_PIOPBC,
610 "TXE PIOPBC Memory Parity"),
611 QLOGIC_IB_HWE_MSG(TXEMEMPARITYERR_PIOLAUNCHFIFO,
612 "TXE PIOLAUNCHFIFO Memory Parity"),
613
614 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_RCVBUF,
615 "RXE RCVBUF Memory Parity"),
616 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_LOOKUPQ,
617 "RXE LOOKUPQ Memory Parity"),
618 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_EAGERTID,
619 "RXE EAGERTID Memory Parity"),
620 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_EXPTID,
621 "RXE EXPTID Memory Parity"),
622 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_FLAGBUF,
623 "RXE FLAGBUF Memory Parity"),
624 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_DATAINFO,
625 "RXE DATAINFO Memory Parity"),
626 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_HDRINFO,
627 "RXE HDRINFO Memory Parity"),
628
629 /* chip-specific hardware errors */
630 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEPOISONEDTLP,
631 "PCIe Poisoned TLP"),
632 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIECPLTIMEOUT,
633 "PCIe completion timeout"),
634 /*
635 * In practice, it's unlikely wthat we'll see PCIe PLL, or bus
636 * parity or memory parity error failures, because most likely we
637 * won't be able to talk to the core of the chip. Nonetheless, we
638 * might see them, if they are in parts of the PCIe core that aren't
639 * essential.
640 */
641 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIE1PLLFAILED,
642 "PCIePLL1"),
643 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIE0PLLFAILED,
644 "PCIePLL0"),
645 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEBUSPARITYXTLH,
646 "PCIe XTLH core parity"),
647 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEBUSPARITYXADM,
648 "PCIe ADM TX core parity"),
649 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEBUSPARITYRADM,
650 "PCIe ADM RX core parity"),
651 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_SERDESPLLFAILED,
652 "SerDes PLL"),
653 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIECPLDATAQUEUEERR,
654 "PCIe cpl header queue"),
655 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIECPLHDRQUEUEERR,
656 "PCIe cpl data queue"),
657 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_SDMAMEMREADERR,
658 "Send DMA memory read"),
659 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_CLK_UC_PLLNOTLOCKED,
660 "uC PLL clock not locked"),
661 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIESERDESQ0PCLKNOTDETECT,
662 "PCIe serdes Q0 no clock"),
663 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIESERDESQ1PCLKNOTDETECT,
664 "PCIe serdes Q1 no clock"),
665 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIESERDESQ2PCLKNOTDETECT,
666 "PCIe serdes Q2 no clock"),
667 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIESERDESQ3PCLKNOTDETECT,
668 "PCIe serdes Q3 no clock"),
669 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_DDSRXEQMEMORYPARITYERR,
670 "DDS RXEQ memory parity"),
671 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR,
672 "IB uC memory parity"),
673 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIE_UC_OCT0MEMORYPARITYERR,
674 "PCIe uC oct0 memory parity"),
675 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIE_UC_OCT1MEMORYPARITYERR,
676 "PCIe uC oct1 memory parity"),
677 };
678
679 #define RXE_PARITY (RXEMEMPARITYERR_EAGERTID|RXEMEMPARITYERR_EXPTID)
680
681 #define QLOGIC_IB_E_PKTERRS (\
682 ERR_MASK(SendPktLenErr) | \
683 ERR_MASK(SendDroppedDataPktErr) | \
684 ERR_MASK(RcvVCRCErr) | \
685 ERR_MASK(RcvICRCErr) | \
686 ERR_MASK(RcvShortPktLenErr) | \
687 ERR_MASK(RcvEBPErr))
688
689 /* Convenience for decoding Send DMA errors */
690 #define QLOGIC_IB_E_SDMAERRS ( \
691 ERR_MASK(SDmaGenMismatchErr) | \
692 ERR_MASK(SDmaOutOfBoundErr) | \
693 ERR_MASK(SDmaTailOutOfBoundErr) | ERR_MASK(SDmaBaseErr) | \
694 ERR_MASK(SDma1stDescErr) | ERR_MASK(SDmaRpyTagErr) | \
695 ERR_MASK(SDmaDwEnErr) | ERR_MASK(SDmaMissingDwErr) | \
696 ERR_MASK(SDmaUnexpDataErr) | \
697 ERR_MASK(SDmaDescAddrMisalignErr) | \
698 ERR_MASK(SDmaDisabledErr) | \
699 ERR_MASK(SendBufMisuseErr))
700
701 /* These are all rcv-related errors which we want to count for stats */
702 #define E_SUM_PKTERRS \
703 (ERR_MASK(RcvHdrLenErr) | ERR_MASK(RcvBadTidErr) | \
704 ERR_MASK(RcvBadVersionErr) | ERR_MASK(RcvHdrErr) | \
705 ERR_MASK(RcvLongPktLenErr) | ERR_MASK(RcvShortPktLenErr) | \
706 ERR_MASK(RcvMaxPktLenErr) | ERR_MASK(RcvMinPktLenErr) | \
707 ERR_MASK(RcvFormatErr) | ERR_MASK(RcvUnsupportedVLErr) | \
708 ERR_MASK(RcvUnexpectedCharErr) | ERR_MASK(RcvEBPErr))
709
710 /* These are all send-related errors which we want to count for stats */
711 #define E_SUM_ERRS \
712 (ERR_MASK(SendPioArmLaunchErr) | ERR_MASK(SendUnexpectedPktNumErr) | \
713 ERR_MASK(SendDroppedDataPktErr) | ERR_MASK(SendDroppedSmpPktErr) | \
714 ERR_MASK(SendMaxPktLenErr) | ERR_MASK(SendUnsupportedVLErr) | \
715 ERR_MASK(SendMinPktLenErr) | ERR_MASK(SendPktLenErr) | \
716 ERR_MASK(InvalidAddrErr))
717
718 /*
719 * this is similar to E_SUM_ERRS, but can't ignore armlaunch, don't ignore
720 * errors not related to freeze and cancelling buffers. Can't ignore
721 * armlaunch because could get more while still cleaning up, and need
722 * to cancel those as they happen.
723 */
724 #define E_SPKT_ERRS_IGNORE \
725 (ERR_MASK(SendDroppedDataPktErr) | ERR_MASK(SendDroppedSmpPktErr) | \
726 ERR_MASK(SendMaxPktLenErr) | ERR_MASK(SendMinPktLenErr) | \
727 ERR_MASK(SendPktLenErr))
728
729 /*
730 * these are errors that can occur when the link changes state while
731 * a packet is being sent or received. This doesn't cover things
732 * like EBP or VCRC that can be the result of a sending having the
733 * link change state, so we receive a "known bad" packet.
734 */
735 #define E_SUM_LINK_PKTERRS \
736 (ERR_MASK(SendDroppedDataPktErr) | ERR_MASK(SendDroppedSmpPktErr) | \
737 ERR_MASK(SendMinPktLenErr) | ERR_MASK(SendPktLenErr) | \
738 ERR_MASK(RcvShortPktLenErr) | ERR_MASK(RcvMinPktLenErr) | \
739 ERR_MASK(RcvUnexpectedCharErr))
740
741 static void autoneg_7220_work(struct work_struct *);
742 static u32 __iomem *qib_7220_getsendbuf(struct qib_pportdata *, u64, u32 *);
743
744 /*
745 * Called when we might have an error that is specific to a particular
746 * PIO buffer, and may need to cancel that buffer, so it can be re-used.
747 * because we don't need to force the update of pioavail.
748 */
749 static void qib_disarm_7220_senderrbufs(struct qib_pportdata *ppd)
750 {
751 unsigned long sbuf[3];
752 struct qib_devdata *dd = ppd->dd;
753
754 /*
755 * It's possible that sendbuffererror could have bits set; might
756 * have already done this as a result of hardware error handling.
757 */
758 /* read these before writing errorclear */
759 sbuf[0] = qib_read_kreg64(dd, kr_sendbuffererror);
760 sbuf[1] = qib_read_kreg64(dd, kr_sendbuffererror + 1);
761 sbuf[2] = qib_read_kreg64(dd, kr_sendbuffererror + 2);
762
763 if (sbuf[0] || sbuf[1] || sbuf[2])
764 qib_disarm_piobufs_set(dd, sbuf,
765 dd->piobcnt2k + dd->piobcnt4k);
766 }
767
768 static void qib_7220_txe_recover(struct qib_devdata *dd)
769 {
770 qib_devinfo(dd->pcidev, "Recovering from TXE PIO parity error\n");
771 qib_disarm_7220_senderrbufs(dd->pport);
772 }
773
774 /*
775 * This is called with interrupts disabled and sdma_lock held.
776 */
777 static void qib_7220_sdma_sendctrl(struct qib_pportdata *ppd, unsigned op)
778 {
779 struct qib_devdata *dd = ppd->dd;
780 u64 set_sendctrl = 0;
781 u64 clr_sendctrl = 0;
782
783 if (op & QIB_SDMA_SENDCTRL_OP_ENABLE)
784 set_sendctrl |= SYM_MASK(SendCtrl, SDmaEnable);
785 else
786 clr_sendctrl |= SYM_MASK(SendCtrl, SDmaEnable);
787
788 if (op & QIB_SDMA_SENDCTRL_OP_INTENABLE)
789 set_sendctrl |= SYM_MASK(SendCtrl, SDmaIntEnable);
790 else
791 clr_sendctrl |= SYM_MASK(SendCtrl, SDmaIntEnable);
792
793 if (op & QIB_SDMA_SENDCTRL_OP_HALT)
794 set_sendctrl |= SYM_MASK(SendCtrl, SDmaHalt);
795 else
796 clr_sendctrl |= SYM_MASK(SendCtrl, SDmaHalt);
797
798 spin_lock(&dd->sendctrl_lock);
799
800 dd->sendctrl |= set_sendctrl;
801 dd->sendctrl &= ~clr_sendctrl;
802
803 qib_write_kreg(dd, kr_sendctrl, dd->sendctrl);
804 qib_write_kreg(dd, kr_scratch, 0);
805
806 spin_unlock(&dd->sendctrl_lock);
807 }
808
809 static void qib_decode_7220_sdma_errs(struct qib_pportdata *ppd,
810 u64 err, char *buf, size_t blen)
811 {
812 static const struct {
813 u64 err;
814 const char *msg;
815 } errs[] = {
816 { ERR_MASK(SDmaGenMismatchErr),
817 "SDmaGenMismatch" },
818 { ERR_MASK(SDmaOutOfBoundErr),
819 "SDmaOutOfBound" },
820 { ERR_MASK(SDmaTailOutOfBoundErr),
821 "SDmaTailOutOfBound" },
822 { ERR_MASK(SDmaBaseErr),
823 "SDmaBase" },
824 { ERR_MASK(SDma1stDescErr),
825 "SDma1stDesc" },
826 { ERR_MASK(SDmaRpyTagErr),
827 "SDmaRpyTag" },
828 { ERR_MASK(SDmaDwEnErr),
829 "SDmaDwEn" },
830 { ERR_MASK(SDmaMissingDwErr),
831 "SDmaMissingDw" },
832 { ERR_MASK(SDmaUnexpDataErr),
833 "SDmaUnexpData" },
834 { ERR_MASK(SDmaDescAddrMisalignErr),
835 "SDmaDescAddrMisalign" },
836 { ERR_MASK(SendBufMisuseErr),
837 "SendBufMisuse" },
838 { ERR_MASK(SDmaDisabledErr),
839 "SDmaDisabled" },
840 };
841 int i;
842 size_t bidx = 0;
843
844 for (i = 0; i < ARRAY_SIZE(errs); i++) {
845 if (err & errs[i].err)
846 bidx += scnprintf(buf + bidx, blen - bidx,
847 "%s ", errs[i].msg);
848 }
849 }
850
851 /*
852 * This is called as part of link down clean up so disarm and flush
853 * all send buffers so that SMP packets can be sent.
854 */
855 static void qib_7220_sdma_hw_clean_up(struct qib_pportdata *ppd)
856 {
857 /* This will trigger the Abort interrupt */
858 sendctrl_7220_mod(ppd, QIB_SENDCTRL_DISARM_ALL | QIB_SENDCTRL_FLUSH |
859 QIB_SENDCTRL_AVAIL_BLIP);
860 ppd->dd->upd_pio_shadow = 1; /* update our idea of what's busy */
861 }
862
863 static void qib_sdma_7220_setlengen(struct qib_pportdata *ppd)
864 {
865 /*
866 * Set SendDmaLenGen and clear and set
867 * the MSB of the generation count to enable generation checking
868 * and load the internal generation counter.
869 */
870 qib_write_kreg(ppd->dd, kr_senddmalengen, ppd->sdma_descq_cnt);
871 qib_write_kreg(ppd->dd, kr_senddmalengen,
872 ppd->sdma_descq_cnt |
873 (1ULL << QIB_7220_SendDmaLenGen_Generation_MSB));
874 }
875
876 static void qib_7220_sdma_hw_start_up(struct qib_pportdata *ppd)
877 {
878 qib_sdma_7220_setlengen(ppd);
879 qib_sdma_update_7220_tail(ppd, 0); /* Set SendDmaTail */
880 ppd->sdma_head_dma[0] = 0;
881 }
882
883 #define DISABLES_SDMA ( \
884 ERR_MASK(SDmaDisabledErr) | \
885 ERR_MASK(SDmaBaseErr) | \
886 ERR_MASK(SDmaTailOutOfBoundErr) | \
887 ERR_MASK(SDmaOutOfBoundErr) | \
888 ERR_MASK(SDma1stDescErr) | \
889 ERR_MASK(SDmaRpyTagErr) | \
890 ERR_MASK(SDmaGenMismatchErr) | \
891 ERR_MASK(SDmaDescAddrMisalignErr) | \
892 ERR_MASK(SDmaMissingDwErr) | \
893 ERR_MASK(SDmaDwEnErr))
894
895 static void sdma_7220_errors(struct qib_pportdata *ppd, u64 errs)
896 {
897 unsigned long flags;
898 struct qib_devdata *dd = ppd->dd;
899 char *msg;
900
901 errs &= QLOGIC_IB_E_SDMAERRS;
902
903 msg = dd->cspec->sdmamsgbuf;
904 qib_decode_7220_sdma_errs(ppd, errs, msg, sizeof dd->cspec->sdmamsgbuf);
905 spin_lock_irqsave(&ppd->sdma_lock, flags);
906
907 if (errs & ERR_MASK(SendBufMisuseErr)) {
908 unsigned long sbuf[3];
909
910 sbuf[0] = qib_read_kreg64(dd, kr_sendbuffererror);
911 sbuf[1] = qib_read_kreg64(dd, kr_sendbuffererror + 1);
912 sbuf[2] = qib_read_kreg64(dd, kr_sendbuffererror + 2);
913
914 qib_dev_err(ppd->dd,
915 "IB%u:%u SendBufMisuse: %04lx %016lx %016lx\n",
916 ppd->dd->unit, ppd->port, sbuf[2], sbuf[1],
917 sbuf[0]);
918 }
919
920 if (errs & ERR_MASK(SDmaUnexpDataErr))
921 qib_dev_err(dd, "IB%u:%u SDmaUnexpData\n", ppd->dd->unit,
922 ppd->port);
923
924 switch (ppd->sdma_state.current_state) {
925 case qib_sdma_state_s00_hw_down:
926 /* not expecting any interrupts */
927 break;
928
929 case qib_sdma_state_s10_hw_start_up_wait:
930 /* handled in intr path */
931 break;
932
933 case qib_sdma_state_s20_idle:
934 /* not expecting any interrupts */
935 break;
936
937 case qib_sdma_state_s30_sw_clean_up_wait:
938 /* not expecting any interrupts */
939 break;
940
941 case qib_sdma_state_s40_hw_clean_up_wait:
942 if (errs & ERR_MASK(SDmaDisabledErr))
943 __qib_sdma_process_event(ppd,
944 qib_sdma_event_e50_hw_cleaned);
945 break;
946
947 case qib_sdma_state_s50_hw_halt_wait:
948 /* handled in intr path */
949 break;
950
951 case qib_sdma_state_s99_running:
952 if (errs & DISABLES_SDMA)
953 __qib_sdma_process_event(ppd,
954 qib_sdma_event_e7220_err_halted);
955 break;
956 }
957
958 spin_unlock_irqrestore(&ppd->sdma_lock, flags);
959 }
960
961 /*
962 * Decode the error status into strings, deciding whether to always
963 * print * it or not depending on "normal packet errors" vs everything
964 * else. Return 1 if "real" errors, otherwise 0 if only packet
965 * errors, so caller can decide what to print with the string.
966 */
967 static int qib_decode_7220_err(struct qib_devdata *dd, char *buf, size_t blen,
968 u64 err)
969 {
970 int iserr = 1;
971
972 *buf = '\0';
973 if (err & QLOGIC_IB_E_PKTERRS) {
974 if (!(err & ~QLOGIC_IB_E_PKTERRS))
975 iserr = 0;
976 if ((err & ERR_MASK(RcvICRCErr)) &&
977 !(err & (ERR_MASK(RcvVCRCErr) | ERR_MASK(RcvEBPErr))))
978 strlcat(buf, "CRC ", blen);
979 if (!iserr)
980 goto done;
981 }
982 if (err & ERR_MASK(RcvHdrLenErr))
983 strlcat(buf, "rhdrlen ", blen);
984 if (err & ERR_MASK(RcvBadTidErr))
985 strlcat(buf, "rbadtid ", blen);
986 if (err & ERR_MASK(RcvBadVersionErr))
987 strlcat(buf, "rbadversion ", blen);
988 if (err & ERR_MASK(RcvHdrErr))
989 strlcat(buf, "rhdr ", blen);
990 if (err & ERR_MASK(SendSpecialTriggerErr))
991 strlcat(buf, "sendspecialtrigger ", blen);
992 if (err & ERR_MASK(RcvLongPktLenErr))
993 strlcat(buf, "rlongpktlen ", blen);
994 if (err & ERR_MASK(RcvMaxPktLenErr))
995 strlcat(buf, "rmaxpktlen ", blen);
996 if (err & ERR_MASK(RcvMinPktLenErr))
997 strlcat(buf, "rminpktlen ", blen);
998 if (err & ERR_MASK(SendMinPktLenErr))
999 strlcat(buf, "sminpktlen ", blen);
1000 if (err & ERR_MASK(RcvFormatErr))
1001 strlcat(buf, "rformaterr ", blen);
1002 if (err & ERR_MASK(RcvUnsupportedVLErr))
1003 strlcat(buf, "runsupvl ", blen);
1004 if (err & ERR_MASK(RcvUnexpectedCharErr))
1005 strlcat(buf, "runexpchar ", blen);
1006 if (err & ERR_MASK(RcvIBFlowErr))
1007 strlcat(buf, "ribflow ", blen);
1008 if (err & ERR_MASK(SendUnderRunErr))
1009 strlcat(buf, "sunderrun ", blen);
1010 if (err & ERR_MASK(SendPioArmLaunchErr))
1011 strlcat(buf, "spioarmlaunch ", blen);
1012 if (err & ERR_MASK(SendUnexpectedPktNumErr))
1013 strlcat(buf, "sunexperrpktnum ", blen);
1014 if (err & ERR_MASK(SendDroppedSmpPktErr))
1015 strlcat(buf, "sdroppedsmppkt ", blen);
1016 if (err & ERR_MASK(SendMaxPktLenErr))
1017 strlcat(buf, "smaxpktlen ", blen);
1018 if (err & ERR_MASK(SendUnsupportedVLErr))
1019 strlcat(buf, "sunsupVL ", blen);
1020 if (err & ERR_MASK(InvalidAddrErr))
1021 strlcat(buf, "invalidaddr ", blen);
1022 if (err & ERR_MASK(RcvEgrFullErr))
1023 strlcat(buf, "rcvegrfull ", blen);
1024 if (err & ERR_MASK(RcvHdrFullErr))
1025 strlcat(buf, "rcvhdrfull ", blen);
1026 if (err & ERR_MASK(IBStatusChanged))
1027 strlcat(buf, "ibcstatuschg ", blen);
1028 if (err & ERR_MASK(RcvIBLostLinkErr))
1029 strlcat(buf, "riblostlink ", blen);
1030 if (err & ERR_MASK(HardwareErr))
1031 strlcat(buf, "hardware ", blen);
1032 if (err & ERR_MASK(ResetNegated))
1033 strlcat(buf, "reset ", blen);
1034 if (err & QLOGIC_IB_E_SDMAERRS)
1035 qib_decode_7220_sdma_errs(dd->pport, err, buf, blen);
1036 if (err & ERR_MASK(InvalidEEPCmd))
1037 strlcat(buf, "invalideepromcmd ", blen);
1038 done:
1039 return iserr;
1040 }
1041
1042 static void reenable_7220_chase(unsigned long opaque)
1043 {
1044 struct qib_pportdata *ppd = (struct qib_pportdata *)opaque;
1045 ppd->cpspec->chase_timer.expires = 0;
1046 qib_set_ib_7220_lstate(ppd, QLOGIC_IB_IBCC_LINKCMD_DOWN,
1047 QLOGIC_IB_IBCC_LINKINITCMD_POLL);
1048 }
1049
1050 static void handle_7220_chase(struct qib_pportdata *ppd, u64 ibcst)
1051 {
1052 u8 ibclt;
1053 u64 tnow;
1054
1055 ibclt = (u8)SYM_FIELD(ibcst, IBCStatus, LinkTrainingState);
1056
1057 /*
1058 * Detect and handle the state chase issue, where we can
1059 * get stuck if we are unlucky on timing on both sides of
1060 * the link. If we are, we disable, set a timer, and
1061 * then re-enable.
1062 */
1063 switch (ibclt) {
1064 case IB_7220_LT_STATE_CFGRCVFCFG:
1065 case IB_7220_LT_STATE_CFGWAITRMT:
1066 case IB_7220_LT_STATE_TXREVLANES:
1067 case IB_7220_LT_STATE_CFGENH:
1068 tnow = get_jiffies_64();
1069 if (ppd->cpspec->chase_end &&
1070 time_after64(tnow, ppd->cpspec->chase_end)) {
1071 ppd->cpspec->chase_end = 0;
1072 qib_set_ib_7220_lstate(ppd,
1073 QLOGIC_IB_IBCC_LINKCMD_DOWN,
1074 QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
1075 ppd->cpspec->chase_timer.expires = jiffies +
1076 QIB_CHASE_DIS_TIME;
1077 add_timer(&ppd->cpspec->chase_timer);
1078 } else if (!ppd->cpspec->chase_end)
1079 ppd->cpspec->chase_end = tnow + QIB_CHASE_TIME;
1080 break;
1081
1082 default:
1083 ppd->cpspec->chase_end = 0;
1084 break;
1085 }
1086 }
1087
1088 static void handle_7220_errors(struct qib_devdata *dd, u64 errs)
1089 {
1090 char *msg;
1091 u64 ignore_this_time = 0;
1092 u64 iserr = 0;
1093 int log_idx;
1094 struct qib_pportdata *ppd = dd->pport;
1095 u64 mask;
1096
1097 /* don't report errors that are masked */
1098 errs &= dd->cspec->errormask;
1099 msg = dd->cspec->emsgbuf;
1100
1101 /* do these first, they are most important */
1102 if (errs & ERR_MASK(HardwareErr))
1103 qib_7220_handle_hwerrors(dd, msg, sizeof dd->cspec->emsgbuf);
1104 else
1105 for (log_idx = 0; log_idx < QIB_EEP_LOG_CNT; ++log_idx)
1106 if (errs & dd->eep_st_masks[log_idx].errs_to_log)
1107 qib_inc_eeprom_err(dd, log_idx, 1);
1108
1109 if (errs & QLOGIC_IB_E_SDMAERRS)
1110 sdma_7220_errors(ppd, errs);
1111
1112 if (errs & ~IB_E_BITSEXTANT)
1113 qib_dev_err(dd, "error interrupt with unknown errors "
1114 "%llx set\n", (unsigned long long)
1115 (errs & ~IB_E_BITSEXTANT));
1116
1117 if (errs & E_SUM_ERRS) {
1118 qib_disarm_7220_senderrbufs(ppd);
1119 if ((errs & E_SUM_LINK_PKTERRS) &&
1120 !(ppd->lflags & QIBL_LINKACTIVE)) {
1121 /*
1122 * This can happen when trying to bring the link
1123 * up, but the IB link changes state at the "wrong"
1124 * time. The IB logic then complains that the packet
1125 * isn't valid. We don't want to confuse people, so
1126 * we just don't print them, except at debug
1127 */
1128 ignore_this_time = errs & E_SUM_LINK_PKTERRS;
1129 }
1130 } else if ((errs & E_SUM_LINK_PKTERRS) &&
1131 !(ppd->lflags & QIBL_LINKACTIVE)) {
1132 /*
1133 * This can happen when SMA is trying to bring the link
1134 * up, but the IB link changes state at the "wrong" time.
1135 * The IB logic then complains that the packet isn't
1136 * valid. We don't want to confuse people, so we just
1137 * don't print them, except at debug
1138 */
1139 ignore_this_time = errs & E_SUM_LINK_PKTERRS;
1140 }
1141
1142 qib_write_kreg(dd, kr_errclear, errs);
1143
1144 errs &= ~ignore_this_time;
1145 if (!errs)
1146 goto done;
1147
1148 /*
1149 * The ones we mask off are handled specially below
1150 * or above. Also mask SDMADISABLED by default as it
1151 * is too chatty.
1152 */
1153 mask = ERR_MASK(IBStatusChanged) |
1154 ERR_MASK(RcvEgrFullErr) | ERR_MASK(RcvHdrFullErr) |
1155 ERR_MASK(HardwareErr) | ERR_MASK(SDmaDisabledErr);
1156
1157 qib_decode_7220_err(dd, msg, sizeof dd->cspec->emsgbuf, errs & ~mask);
1158
1159 if (errs & E_SUM_PKTERRS)
1160 qib_stats.sps_rcverrs++;
1161 if (errs & E_SUM_ERRS)
1162 qib_stats.sps_txerrs++;
1163 iserr = errs & ~(E_SUM_PKTERRS | QLOGIC_IB_E_PKTERRS |
1164 ERR_MASK(SDmaDisabledErr));
1165
1166 if (errs & ERR_MASK(IBStatusChanged)) {
1167 u64 ibcs;
1168
1169 ibcs = qib_read_kreg64(dd, kr_ibcstatus);
1170 if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG))
1171 handle_7220_chase(ppd, ibcs);
1172
1173 /* Update our picture of width and speed from chip */
1174 ppd->link_width_active =
1175 ((ibcs >> IBA7220_LINKWIDTH_SHIFT) & 1) ?
1176 IB_WIDTH_4X : IB_WIDTH_1X;
1177 ppd->link_speed_active =
1178 ((ibcs >> IBA7220_LINKSPEED_SHIFT) & 1) ?
1179 QIB_IB_DDR : QIB_IB_SDR;
1180
1181 /*
1182 * Since going into a recovery state causes the link state
1183 * to go down and since recovery is transitory, it is better
1184 * if we "miss" ever seeing the link training state go into
1185 * recovery (i.e., ignore this transition for link state
1186 * special handling purposes) without updating lastibcstat.
1187 */
1188 if (qib_7220_phys_portstate(ibcs) !=
1189 IB_PHYSPORTSTATE_LINK_ERR_RECOVER)
1190 qib_handle_e_ibstatuschanged(ppd, ibcs);
1191 }
1192
1193 if (errs & ERR_MASK(ResetNegated)) {
1194 qib_dev_err(dd, "Got reset, requires re-init "
1195 "(unload and reload driver)\n");
1196 dd->flags &= ~QIB_INITTED; /* needs re-init */
1197 /* mark as having had error */
1198 *dd->devstatusp |= QIB_STATUS_HWERROR;
1199 *dd->pport->statusp &= ~QIB_STATUS_IB_CONF;
1200 }
1201
1202 if (*msg && iserr)
1203 qib_dev_porterr(dd, ppd->port, "%s error\n", msg);
1204
1205 if (ppd->state_wanted & ppd->lflags)
1206 wake_up_interruptible(&ppd->state_wait);
1207
1208 /*
1209 * If there were hdrq or egrfull errors, wake up any processes
1210 * waiting in poll. We used to try to check which contexts had
1211 * the overflow, but given the cost of that and the chip reads
1212 * to support it, it's better to just wake everybody up if we
1213 * get an overflow; waiters can poll again if it's not them.
1214 */
1215 if (errs & (ERR_MASK(RcvEgrFullErr) | ERR_MASK(RcvHdrFullErr))) {
1216 qib_handle_urcv(dd, ~0U);
1217 if (errs & ERR_MASK(RcvEgrFullErr))
1218 qib_stats.sps_buffull++;
1219 else
1220 qib_stats.sps_hdrfull++;
1221 }
1222 done:
1223 return;
1224 }
1225
1226 /* enable/disable chip from delivering interrupts */
1227 static void qib_7220_set_intr_state(struct qib_devdata *dd, u32 enable)
1228 {
1229 if (enable) {
1230 if (dd->flags & QIB_BADINTR)
1231 return;
1232 qib_write_kreg(dd, kr_intmask, ~0ULL);
1233 /* force re-interrupt of any pending interrupts. */
1234 qib_write_kreg(dd, kr_intclear, 0ULL);
1235 } else
1236 qib_write_kreg(dd, kr_intmask, 0ULL);
1237 }
1238
1239 /*
1240 * Try to cleanup as much as possible for anything that might have gone
1241 * wrong while in freeze mode, such as pio buffers being written by user
1242 * processes (causing armlaunch), send errors due to going into freeze mode,
1243 * etc., and try to avoid causing extra interrupts while doing so.
1244 * Forcibly update the in-memory pioavail register copies after cleanup
1245 * because the chip won't do it while in freeze mode (the register values
1246 * themselves are kept correct).
1247 * Make sure that we don't lose any important interrupts by using the chip
1248 * feature that says that writing 0 to a bit in *clear that is set in
1249 * *status will cause an interrupt to be generated again (if allowed by
1250 * the *mask value).
1251 * This is in chip-specific code because of all of the register accesses,
1252 * even though the details are similar on most chips.
1253 */
1254 static void qib_7220_clear_freeze(struct qib_devdata *dd)
1255 {
1256 /* disable error interrupts, to avoid confusion */
1257 qib_write_kreg(dd, kr_errmask, 0ULL);
1258
1259 /* also disable interrupts; errormask is sometimes overwriten */
1260 qib_7220_set_intr_state(dd, 0);
1261
1262 qib_cancel_sends(dd->pport);
1263
1264 /* clear the freeze, and be sure chip saw it */
1265 qib_write_kreg(dd, kr_control, dd->control);
1266 qib_read_kreg32(dd, kr_scratch);
1267
1268 /* force in-memory update now we are out of freeze */
1269 qib_force_pio_avail_update(dd);
1270
1271 /*
1272 * force new interrupt if any hwerr, error or interrupt bits are
1273 * still set, and clear "safe" send packet errors related to freeze
1274 * and cancelling sends. Re-enable error interrupts before possible
1275 * force of re-interrupt on pending interrupts.
1276 */
1277 qib_write_kreg(dd, kr_hwerrclear, 0ULL);
1278 qib_write_kreg(dd, kr_errclear, E_SPKT_ERRS_IGNORE);
1279 qib_write_kreg(dd, kr_errmask, dd->cspec->errormask);
1280 qib_7220_set_intr_state(dd, 1);
1281 }
1282
1283 /**
1284 * qib_7220_handle_hwerrors - display hardware errors.
1285 * @dd: the qlogic_ib device
1286 * @msg: the output buffer
1287 * @msgl: the size of the output buffer
1288 *
1289 * Use same msg buffer as regular errors to avoid excessive stack
1290 * use. Most hardware errors are catastrophic, but for right now,
1291 * we'll print them and continue. We reuse the same message buffer as
1292 * handle_7220_errors() to avoid excessive stack usage.
1293 */
1294 static void qib_7220_handle_hwerrors(struct qib_devdata *dd, char *msg,
1295 size_t msgl)
1296 {
1297 u64 hwerrs;
1298 u32 bits, ctrl;
1299 int isfatal = 0;
1300 char *bitsmsg;
1301 int log_idx;
1302
1303 hwerrs = qib_read_kreg64(dd, kr_hwerrstatus);
1304 if (!hwerrs)
1305 goto bail;
1306 if (hwerrs == ~0ULL) {
1307 qib_dev_err(dd, "Read of hardware error status failed "
1308 "(all bits set); ignoring\n");
1309 goto bail;
1310 }
1311 qib_stats.sps_hwerrs++;
1312
1313 /*
1314 * Always clear the error status register, except MEMBISTFAIL,
1315 * regardless of whether we continue or stop using the chip.
1316 * We want that set so we know it failed, even across driver reload.
1317 * We'll still ignore it in the hwerrmask. We do this partly for
1318 * diagnostics, but also for support.
1319 */
1320 qib_write_kreg(dd, kr_hwerrclear,
1321 hwerrs & ~HWE_MASK(PowerOnBISTFailed));
1322
1323 hwerrs &= dd->cspec->hwerrmask;
1324
1325 /* We log some errors to EEPROM, check if we have any of those. */
1326 for (log_idx = 0; log_idx < QIB_EEP_LOG_CNT; ++log_idx)
1327 if (hwerrs & dd->eep_st_masks[log_idx].hwerrs_to_log)
1328 qib_inc_eeprom_err(dd, log_idx, 1);
1329 if (hwerrs & ~(TXEMEMPARITYERR_PIOBUF | TXEMEMPARITYERR_PIOPBC |
1330 RXE_PARITY))
1331 qib_devinfo(dd->pcidev, "Hardware error: hwerr=0x%llx "
1332 "(cleared)\n", (unsigned long long) hwerrs);
1333
1334 if (hwerrs & ~IB_HWE_BITSEXTANT)
1335 qib_dev_err(dd, "hwerror interrupt with unknown errors "
1336 "%llx set\n", (unsigned long long)
1337 (hwerrs & ~IB_HWE_BITSEXTANT));
1338
1339 if (hwerrs & QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR)
1340 qib_sd7220_clr_ibpar(dd);
1341
1342 ctrl = qib_read_kreg32(dd, kr_control);
1343 if ((ctrl & QLOGIC_IB_C_FREEZEMODE) && !dd->diag_client) {
1344 /*
1345 * Parity errors in send memory are recoverable by h/w
1346 * just do housekeeping, exit freeze mode and continue.
1347 */
1348 if (hwerrs & (TXEMEMPARITYERR_PIOBUF |
1349 TXEMEMPARITYERR_PIOPBC)) {
1350 qib_7220_txe_recover(dd);
1351 hwerrs &= ~(TXEMEMPARITYERR_PIOBUF |
1352 TXEMEMPARITYERR_PIOPBC);
1353 }
1354 if (hwerrs)
1355 isfatal = 1;
1356 else
1357 qib_7220_clear_freeze(dd);
1358 }
1359
1360 *msg = '\0';
1361
1362 if (hwerrs & HWE_MASK(PowerOnBISTFailed)) {
1363 isfatal = 1;
1364 strlcat(msg, "[Memory BIST test failed, "
1365 "InfiniPath hardware unusable]", msgl);
1366 /* ignore from now on, so disable until driver reloaded */
1367 dd->cspec->hwerrmask &= ~HWE_MASK(PowerOnBISTFailed);
1368 qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask);
1369 }
1370
1371 qib_format_hwerrors(hwerrs, qib_7220_hwerror_msgs,
1372 ARRAY_SIZE(qib_7220_hwerror_msgs), msg, msgl);
1373
1374 bitsmsg = dd->cspec->bitsmsgbuf;
1375 if (hwerrs & (QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK <<
1376 QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT)) {
1377 bits = (u32) ((hwerrs >>
1378 QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT) &
1379 QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK);
1380 snprintf(bitsmsg, sizeof dd->cspec->bitsmsgbuf,
1381 "[PCIe Mem Parity Errs %x] ", bits);
1382 strlcat(msg, bitsmsg, msgl);
1383 }
1384
1385 #define _QIB_PLL_FAIL (QLOGIC_IB_HWE_COREPLL_FBSLIP | \
1386 QLOGIC_IB_HWE_COREPLL_RFSLIP)
1387
1388 if (hwerrs & _QIB_PLL_FAIL) {
1389 isfatal = 1;
1390 snprintf(bitsmsg, sizeof dd->cspec->bitsmsgbuf,
1391 "[PLL failed (%llx), InfiniPath hardware unusable]",
1392 (unsigned long long) hwerrs & _QIB_PLL_FAIL);
1393 strlcat(msg, bitsmsg, msgl);
1394 /* ignore from now on, so disable until driver reloaded */
1395 dd->cspec->hwerrmask &= ~(hwerrs & _QIB_PLL_FAIL);
1396 qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask);
1397 }
1398
1399 if (hwerrs & QLOGIC_IB_HWE_SERDESPLLFAILED) {
1400 /*
1401 * If it occurs, it is left masked since the eternal
1402 * interface is unused.
1403 */
1404 dd->cspec->hwerrmask &= ~QLOGIC_IB_HWE_SERDESPLLFAILED;
1405 qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask);
1406 }
1407
1408 qib_dev_err(dd, "%s hardware error\n", msg);
1409
1410 if (isfatal && !dd->diag_client) {
1411 qib_dev_err(dd, "Fatal Hardware Error, no longer"
1412 " usable, SN %.16s\n", dd->serial);
1413 /*
1414 * For /sys status file and user programs to print; if no
1415 * trailing brace is copied, we'll know it was truncated.
1416 */
1417 if (dd->freezemsg)
1418 snprintf(dd->freezemsg, dd->freezelen,
1419 "{%s}", msg);
1420 qib_disable_after_error(dd);
1421 }
1422 bail:;
1423 }
1424
1425 /**
1426 * qib_7220_init_hwerrors - enable hardware errors
1427 * @dd: the qlogic_ib device
1428 *
1429 * now that we have finished initializing everything that might reasonably
1430 * cause a hardware error, and cleared those errors bits as they occur,
1431 * we can enable hardware errors in the mask (potentially enabling
1432 * freeze mode), and enable hardware errors as errors (along with
1433 * everything else) in errormask
1434 */
1435 static void qib_7220_init_hwerrors(struct qib_devdata *dd)
1436 {
1437 u64 val;
1438 u64 extsval;
1439
1440 extsval = qib_read_kreg64(dd, kr_extstatus);
1441
1442 if (!(extsval & (QLOGIC_IB_EXTS_MEMBIST_ENDTEST |
1443 QLOGIC_IB_EXTS_MEMBIST_DISABLED)))
1444 qib_dev_err(dd, "MemBIST did not complete!\n");
1445 if (extsval & QLOGIC_IB_EXTS_MEMBIST_DISABLED)
1446 qib_devinfo(dd->pcidev, "MemBIST is disabled.\n");
1447
1448 val = ~0ULL; /* default to all hwerrors become interrupts, */
1449
1450 val &= ~QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR;
1451 dd->cspec->hwerrmask = val;
1452
1453 qib_write_kreg(dd, kr_hwerrclear, ~HWE_MASK(PowerOnBISTFailed));
1454 qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask);
1455
1456 /* clear all */
1457 qib_write_kreg(dd, kr_errclear, ~0ULL);
1458 /* enable errors that are masked, at least this first time. */
1459 qib_write_kreg(dd, kr_errmask, ~0ULL);
1460 dd->cspec->errormask = qib_read_kreg64(dd, kr_errmask);
1461 /* clear any interrupts up to this point (ints still not enabled) */
1462 qib_write_kreg(dd, kr_intclear, ~0ULL);
1463 }
1464
1465 /*
1466 * Disable and enable the armlaunch error. Used for PIO bandwidth testing
1467 * on chips that are count-based, rather than trigger-based. There is no
1468 * reference counting, but that's also fine, given the intended use.
1469 * Only chip-specific because it's all register accesses
1470 */
1471 static void qib_set_7220_armlaunch(struct qib_devdata *dd, u32 enable)
1472 {
1473 if (enable) {
1474 qib_write_kreg(dd, kr_errclear, ERR_MASK(SendPioArmLaunchErr));
1475 dd->cspec->errormask |= ERR_MASK(SendPioArmLaunchErr);
1476 } else
1477 dd->cspec->errormask &= ~ERR_MASK(SendPioArmLaunchErr);
1478 qib_write_kreg(dd, kr_errmask, dd->cspec->errormask);
1479 }
1480
1481 /*
1482 * Formerly took parameter <which> in pre-shifted,
1483 * pre-merged form with LinkCmd and LinkInitCmd
1484 * together, and assuming the zero was NOP.
1485 */
1486 static void qib_set_ib_7220_lstate(struct qib_pportdata *ppd, u16 linkcmd,
1487 u16 linitcmd)
1488 {
1489 u64 mod_wd;
1490 struct qib_devdata *dd = ppd->dd;
1491 unsigned long flags;
1492
1493 if (linitcmd == QLOGIC_IB_IBCC_LINKINITCMD_DISABLE) {
1494 /*
1495 * If we are told to disable, note that so link-recovery
1496 * code does not attempt to bring us back up.
1497 */
1498 spin_lock_irqsave(&ppd->lflags_lock, flags);
1499 ppd->lflags |= QIBL_IB_LINK_DISABLED;
1500 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
1501 } else if (linitcmd || linkcmd == QLOGIC_IB_IBCC_LINKCMD_DOWN) {
1502 /*
1503 * Any other linkinitcmd will lead to LINKDOWN and then
1504 * to INIT (if all is well), so clear flag to let
1505 * link-recovery code attempt to bring us back up.
1506 */
1507 spin_lock_irqsave(&ppd->lflags_lock, flags);
1508 ppd->lflags &= ~QIBL_IB_LINK_DISABLED;
1509 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
1510 }
1511
1512 mod_wd = (linkcmd << IBA7220_IBCC_LINKCMD_SHIFT) |
1513 (linitcmd << QLOGIC_IB_IBCC_LINKINITCMD_SHIFT);
1514
1515 qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl | mod_wd);
1516 /* write to chip to prevent back-to-back writes of ibc reg */
1517 qib_write_kreg(dd, kr_scratch, 0);
1518 }
1519
1520 /*
1521 * All detailed interaction with the SerDes has been moved to qib_sd7220.c
1522 *
1523 * The portion of IBA7220-specific bringup_serdes() that actually deals with
1524 * registers and memory within the SerDes itself is qib_sd7220_init().
1525 */
1526
1527 /**
1528 * qib_7220_bringup_serdes - bring up the serdes
1529 * @ppd: physical port on the qlogic_ib device
1530 */
1531 static int qib_7220_bringup_serdes(struct qib_pportdata *ppd)
1532 {
1533 struct qib_devdata *dd = ppd->dd;
1534 u64 val, prev_val, guid, ibc;
1535 int ret = 0;
1536
1537 /* Put IBC in reset, sends disabled */
1538 dd->control &= ~QLOGIC_IB_C_LINKENABLE;
1539 qib_write_kreg(dd, kr_control, 0ULL);
1540
1541 if (qib_compat_ddr_negotiate) {
1542 ppd->cpspec->ibdeltainprog = 1;
1543 ppd->cpspec->ibsymsnap = read_7220_creg32(dd, cr_ibsymbolerr);
1544 ppd->cpspec->iblnkerrsnap =
1545 read_7220_creg32(dd, cr_iblinkerrrecov);
1546 }
1547
1548 /* flowcontrolwatermark is in units of KBytes */
1549 ibc = 0x5ULL << SYM_LSB(IBCCtrl, FlowCtrlWaterMark);
1550 /*
1551 * How often flowctrl sent. More or less in usecs; balance against
1552 * watermark value, so that in theory senders always get a flow
1553 * control update in time to not let the IB link go idle.
1554 */
1555 ibc |= 0x3ULL << SYM_LSB(IBCCtrl, FlowCtrlPeriod);
1556 /* max error tolerance */
1557 ibc |= 0xfULL << SYM_LSB(IBCCtrl, PhyerrThreshold);
1558 /* use "real" buffer space for */
1559 ibc |= 4ULL << SYM_LSB(IBCCtrl, CreditScale);
1560 /* IB credit flow control. */
1561 ibc |= 0xfULL << SYM_LSB(IBCCtrl, OverrunThreshold);
1562 /*
1563 * set initial max size pkt IBC will send, including ICRC; it's the
1564 * PIO buffer size in dwords, less 1; also see qib_set_mtu()
1565 */
1566 ibc |= ((u64)(ppd->ibmaxlen >> 2) + 1) << SYM_LSB(IBCCtrl, MaxPktLen);
1567 ppd->cpspec->ibcctrl = ibc; /* without linkcmd or linkinitcmd! */
1568
1569 /* initially come up waiting for TS1, without sending anything. */
1570 val = ppd->cpspec->ibcctrl | (QLOGIC_IB_IBCC_LINKINITCMD_DISABLE <<
1571 QLOGIC_IB_IBCC_LINKINITCMD_SHIFT);
1572 qib_write_kreg(dd, kr_ibcctrl, val);
1573
1574 if (!ppd->cpspec->ibcddrctrl) {
1575 /* not on re-init after reset */
1576 ppd->cpspec->ibcddrctrl = qib_read_kreg64(dd, kr_ibcddrctrl);
1577
1578 if (ppd->link_speed_enabled == (QIB_IB_SDR | QIB_IB_DDR))
1579 ppd->cpspec->ibcddrctrl |=
1580 IBA7220_IBC_SPEED_AUTONEG_MASK |
1581 IBA7220_IBC_IBTA_1_2_MASK;
1582 else
1583 ppd->cpspec->ibcddrctrl |=
1584 ppd->link_speed_enabled == QIB_IB_DDR ?
1585 IBA7220_IBC_SPEED_DDR : IBA7220_IBC_SPEED_SDR;
1586 if ((ppd->link_width_enabled & (IB_WIDTH_1X | IB_WIDTH_4X)) ==
1587 (IB_WIDTH_1X | IB_WIDTH_4X))
1588 ppd->cpspec->ibcddrctrl |= IBA7220_IBC_WIDTH_AUTONEG;
1589 else
1590 ppd->cpspec->ibcddrctrl |=
1591 ppd->link_width_enabled == IB_WIDTH_4X ?
1592 IBA7220_IBC_WIDTH_4X_ONLY :
1593 IBA7220_IBC_WIDTH_1X_ONLY;
1594
1595 /* always enable these on driver reload, not sticky */
1596 ppd->cpspec->ibcddrctrl |=
1597 IBA7220_IBC_RXPOL_MASK << IBA7220_IBC_RXPOL_SHIFT;
1598 ppd->cpspec->ibcddrctrl |=
1599 IBA7220_IBC_HRTBT_MASK << IBA7220_IBC_HRTBT_SHIFT;
1600
1601 /* enable automatic lane reversal detection for receive */
1602 ppd->cpspec->ibcddrctrl |= IBA7220_IBC_LANE_REV_SUPPORTED;
1603 } else
1604 /* write to chip to prevent back-to-back writes of ibc reg */
1605 qib_write_kreg(dd, kr_scratch, 0);
1606
1607 qib_write_kreg(dd, kr_ibcddrctrl, ppd->cpspec->ibcddrctrl);
1608 qib_write_kreg(dd, kr_scratch, 0);
1609
1610 qib_write_kreg(dd, kr_ncmodectrl, 0Ull);
1611 qib_write_kreg(dd, kr_scratch, 0);
1612
1613 ret = qib_sd7220_init(dd);
1614
1615 val = qib_read_kreg64(dd, kr_xgxs_cfg);
1616 prev_val = val;
1617 val |= QLOGIC_IB_XGXS_FC_SAFE;
1618 if (val != prev_val) {
1619 qib_write_kreg(dd, kr_xgxs_cfg, val);
1620 qib_read_kreg32(dd, kr_scratch);
1621 }
1622 if (val & QLOGIC_IB_XGXS_RESET)
1623 val &= ~QLOGIC_IB_XGXS_RESET;
1624 if (val != prev_val)
1625 qib_write_kreg(dd, kr_xgxs_cfg, val);
1626
1627 /* first time through, set port guid */
1628 if (!ppd->guid)
1629 ppd->guid = dd->base_guid;
1630 guid = be64_to_cpu(ppd->guid);
1631
1632 qib_write_kreg(dd, kr_hrtbt_guid, guid);
1633 if (!ret) {
1634 dd->control |= QLOGIC_IB_C_LINKENABLE;
1635 qib_write_kreg(dd, kr_control, dd->control);
1636 } else
1637 /* write to chip to prevent back-to-back writes of ibc reg */
1638 qib_write_kreg(dd, kr_scratch, 0);
1639 return ret;
1640 }
1641
1642 /**
1643 * qib_7220_quiet_serdes - set serdes to txidle
1644 * @ppd: physical port of the qlogic_ib device
1645 * Called when driver is being unloaded
1646 */
1647 static void qib_7220_quiet_serdes(struct qib_pportdata *ppd)
1648 {
1649 u64 val;
1650 struct qib_devdata *dd = ppd->dd;
1651 unsigned long flags;
1652
1653 /* disable IBC */
1654 dd->control &= ~QLOGIC_IB_C_LINKENABLE;
1655 qib_write_kreg(dd, kr_control,
1656 dd->control | QLOGIC_IB_C_FREEZEMODE);
1657
1658 ppd->cpspec->chase_end = 0;
1659 if (ppd->cpspec->chase_timer.data) /* if initted */
1660 del_timer_sync(&ppd->cpspec->chase_timer);
1661
1662 if (ppd->cpspec->ibsymdelta || ppd->cpspec->iblnkerrdelta ||
1663 ppd->cpspec->ibdeltainprog) {
1664 u64 diagc;
1665
1666 /* enable counter writes */
1667 diagc = qib_read_kreg64(dd, kr_hwdiagctrl);
1668 qib_write_kreg(dd, kr_hwdiagctrl,
1669 diagc | SYM_MASK(HwDiagCtrl, CounterWrEnable));
1670
1671 if (ppd->cpspec->ibsymdelta || ppd->cpspec->ibdeltainprog) {
1672 val = read_7220_creg32(dd, cr_ibsymbolerr);
1673 if (ppd->cpspec->ibdeltainprog)
1674 val -= val - ppd->cpspec->ibsymsnap;
1675 val -= ppd->cpspec->ibsymdelta;
1676 write_7220_creg(dd, cr_ibsymbolerr, val);
1677 }
1678 if (ppd->cpspec->iblnkerrdelta || ppd->cpspec->ibdeltainprog) {
1679 val = read_7220_creg32(dd, cr_iblinkerrrecov);
1680 if (ppd->cpspec->ibdeltainprog)
1681 val -= val - ppd->cpspec->iblnkerrsnap;
1682 val -= ppd->cpspec->iblnkerrdelta;
1683 write_7220_creg(dd, cr_iblinkerrrecov, val);
1684 }
1685
1686 /* and disable counter writes */
1687 qib_write_kreg(dd, kr_hwdiagctrl, diagc);
1688 }
1689 qib_set_ib_7220_lstate(ppd, 0, QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
1690
1691 spin_lock_irqsave(&ppd->lflags_lock, flags);
1692 ppd->lflags &= ~QIBL_IB_AUTONEG_INPROG;
1693 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
1694 wake_up(&ppd->cpspec->autoneg_wait);
1695 cancel_delayed_work(&ppd->cpspec->autoneg_work);
1696 flush_scheduled_work();
1697
1698 shutdown_7220_relock_poll(ppd->dd);
1699 val = qib_read_kreg64(ppd->dd, kr_xgxs_cfg);
1700 val |= QLOGIC_IB_XGXS_RESET;
1701 qib_write_kreg(ppd->dd, kr_xgxs_cfg, val);
1702 }
1703
1704 /**
1705 * qib_setup_7220_setextled - set the state of the two external LEDs
1706 * @dd: the qlogic_ib device
1707 * @on: whether the link is up or not
1708 *
1709 * The exact combo of LEDs if on is true is determined by looking
1710 * at the ibcstatus.
1711 *
1712 * These LEDs indicate the physical and logical state of IB link.
1713 * For this chip (at least with recommended board pinouts), LED1
1714 * is Yellow (logical state) and LED2 is Green (physical state),
1715 *
1716 * Note: We try to match the Mellanox HCA LED behavior as best
1717 * we can. Green indicates physical link state is OK (something is
1718 * plugged in, and we can train).
1719 * Amber indicates the link is logically up (ACTIVE).
1720 * Mellanox further blinks the amber LED to indicate data packet
1721 * activity, but we have no hardware support for that, so it would
1722 * require waking up every 10-20 msecs and checking the counters
1723 * on the chip, and then turning the LED off if appropriate. That's
1724 * visible overhead, so not something we will do.
1725 *
1726 */
1727 static void qib_setup_7220_setextled(struct qib_pportdata *ppd, u32 on)
1728 {
1729 struct qib_devdata *dd = ppd->dd;
1730 u64 extctl, ledblink = 0, val, lst, ltst;
1731 unsigned long flags;
1732
1733 /*
1734 * The diags use the LED to indicate diag info, so we leave
1735 * the external LED alone when the diags are running.
1736 */
1737 if (dd->diag_client)
1738 return;
1739
1740 if (ppd->led_override) {
1741 ltst = (ppd->led_override & QIB_LED_PHYS) ?
1742 IB_PHYSPORTSTATE_LINKUP : IB_PHYSPORTSTATE_DISABLED,
1743 lst = (ppd->led_override & QIB_LED_LOG) ?
1744 IB_PORT_ACTIVE : IB_PORT_DOWN;
1745 } else if (on) {
1746 val = qib_read_kreg64(dd, kr_ibcstatus);
1747 ltst = qib_7220_phys_portstate(val);
1748 lst = qib_7220_iblink_state(val);
1749 } else {
1750 ltst = 0;
1751 lst = 0;
1752 }
1753
1754 spin_lock_irqsave(&dd->cspec->gpio_lock, flags);
1755 extctl = dd->cspec->extctrl & ~(SYM_MASK(EXTCtrl, LEDPriPortGreenOn) |
1756 SYM_MASK(EXTCtrl, LEDPriPortYellowOn));
1757 if (ltst == IB_PHYSPORTSTATE_LINKUP) {
1758 extctl |= SYM_MASK(EXTCtrl, LEDPriPortGreenOn);
1759 /*
1760 * counts are in chip clock (4ns) periods.
1761 * This is 1/16 sec (66.6ms) on,
1762 * 3/16 sec (187.5 ms) off, with packets rcvd
1763 */
1764 ledblink = ((66600 * 1000UL / 4) << IBA7220_LEDBLINK_ON_SHIFT)
1765 | ((187500 * 1000UL / 4) << IBA7220_LEDBLINK_OFF_SHIFT);
1766 }
1767 if (lst == IB_PORT_ACTIVE)
1768 extctl |= SYM_MASK(EXTCtrl, LEDPriPortYellowOn);
1769 dd->cspec->extctrl = extctl;
1770 qib_write_kreg(dd, kr_extctrl, extctl);
1771 spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags);
1772
1773 if (ledblink) /* blink the LED on packet receive */
1774 qib_write_kreg(dd, kr_rcvpktledcnt, ledblink);
1775 }
1776
1777 static void qib_7220_free_irq(struct qib_devdata *dd)
1778 {
1779 if (dd->cspec->irq) {
1780 free_irq(dd->cspec->irq, dd);
1781 dd->cspec->irq = 0;
1782 }
1783 qib_nomsi(dd);
1784 }
1785
1786 /*
1787 * qib_setup_7220_cleanup - clean up any per-chip chip-specific stuff
1788 * @dd: the qlogic_ib device
1789 *
1790 * This is called during driver unload.
1791 *
1792 */
1793 static void qib_setup_7220_cleanup(struct qib_devdata *dd)
1794 {
1795 qib_7220_free_irq(dd);
1796 kfree(dd->cspec->cntrs);
1797 kfree(dd->cspec->portcntrs);
1798 }
1799
1800 /*
1801 * This is only called for SDmaInt.
1802 * SDmaDisabled is handled on the error path.
1803 */
1804 static void sdma_7220_intr(struct qib_pportdata *ppd, u64 istat)
1805 {
1806 unsigned long flags;
1807
1808 spin_lock_irqsave(&ppd->sdma_lock, flags);
1809
1810 switch (ppd->sdma_state.current_state) {
1811 case qib_sdma_state_s00_hw_down:
1812 break;
1813
1814 case qib_sdma_state_s10_hw_start_up_wait:
1815 __qib_sdma_process_event(ppd, qib_sdma_event_e20_hw_started);
1816 break;
1817
1818 case qib_sdma_state_s20_idle:
1819 break;
1820
1821 case qib_sdma_state_s30_sw_clean_up_wait:
1822 break;
1823
1824 case qib_sdma_state_s40_hw_clean_up_wait:
1825 break;
1826
1827 case qib_sdma_state_s50_hw_halt_wait:
1828 __qib_sdma_process_event(ppd, qib_sdma_event_e60_hw_halted);
1829 break;
1830
1831 case qib_sdma_state_s99_running:
1832 /* too chatty to print here */
1833 __qib_sdma_intr(ppd);
1834 break;
1835 }
1836 spin_unlock_irqrestore(&ppd->sdma_lock, flags);
1837 }
1838
1839 static void qib_wantpiobuf_7220_intr(struct qib_devdata *dd, u32 needint)
1840 {
1841 unsigned long flags;
1842
1843 spin_lock_irqsave(&dd->sendctrl_lock, flags);
1844 if (needint) {
1845 if (!(dd->sendctrl & SYM_MASK(SendCtrl, SendBufAvailUpd)))
1846 goto done;
1847 /*
1848 * blip the availupd off, next write will be on, so
1849 * we ensure an avail update, regardless of threshold or
1850 * buffers becoming free, whenever we want an interrupt
1851 */
1852 qib_write_kreg(dd, kr_sendctrl, dd->sendctrl &
1853 ~SYM_MASK(SendCtrl, SendBufAvailUpd));
1854 qib_write_kreg(dd, kr_scratch, 0ULL);
1855 dd->sendctrl |= SYM_MASK(SendCtrl, SendIntBufAvail);
1856 } else
1857 dd->sendctrl &= ~SYM_MASK(SendCtrl, SendIntBufAvail);
1858 qib_write_kreg(dd, kr_sendctrl, dd->sendctrl);
1859 qib_write_kreg(dd, kr_scratch, 0ULL);
1860 done:
1861 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
1862 }
1863
1864 /*
1865 * Handle errors and unusual events first, separate function
1866 * to improve cache hits for fast path interrupt handling.
1867 */
1868 static noinline void unlikely_7220_intr(struct qib_devdata *dd, u64 istat)
1869 {
1870 if (unlikely(istat & ~QLOGIC_IB_I_BITSEXTANT))
1871 qib_dev_err(dd,
1872 "interrupt with unknown interrupts %Lx set\n",
1873 istat & ~QLOGIC_IB_I_BITSEXTANT);
1874
1875 if (istat & QLOGIC_IB_I_GPIO) {
1876 u32 gpiostatus;
1877
1878 /*
1879 * Boards for this chip currently don't use GPIO interrupts,
1880 * so clear by writing GPIOstatus to GPIOclear, and complain
1881 * to alert developer. To avoid endless repeats, clear
1882 * the bits in the mask, since there is some kind of
1883 * programming error or chip problem.
1884 */
1885 gpiostatus = qib_read_kreg32(dd, kr_gpio_status);
1886 /*
1887 * In theory, writing GPIOstatus to GPIOclear could
1888 * have a bad side-effect on some diagnostic that wanted
1889 * to poll for a status-change, but the various shadows
1890 * make that problematic at best. Diags will just suppress
1891 * all GPIO interrupts during such tests.
1892 */
1893 qib_write_kreg(dd, kr_gpio_clear, gpiostatus);
1894
1895 if (gpiostatus) {
1896 const u32 mask = qib_read_kreg32(dd, kr_gpio_mask);
1897 u32 gpio_irq = mask & gpiostatus;
1898
1899 /*
1900 * A bit set in status and (chip) Mask register
1901 * would cause an interrupt. Since we are not
1902 * expecting any, report it. Also check that the
1903 * chip reflects our shadow, report issues,
1904 * and refresh from the shadow.
1905 */
1906 /*
1907 * Clear any troublemakers, and update chip
1908 * from shadow
1909 */
1910 dd->cspec->gpio_mask &= ~gpio_irq;
1911 qib_write_kreg(dd, kr_gpio_mask, dd->cspec->gpio_mask);
1912 }
1913 }
1914
1915 if (istat & QLOGIC_IB_I_ERROR) {
1916 u64 estat;
1917
1918 qib_stats.sps_errints++;
1919 estat = qib_read_kreg64(dd, kr_errstatus);
1920 if (!estat)
1921 qib_devinfo(dd->pcidev, "error interrupt (%Lx), "
1922 "but no error bits set!\n", istat);
1923 else
1924 handle_7220_errors(dd, estat);
1925 }
1926 }
1927
1928 static irqreturn_t qib_7220intr(int irq, void *data)
1929 {
1930 struct qib_devdata *dd = data;
1931 irqreturn_t ret;
1932 u64 istat;
1933 u64 ctxtrbits;
1934 u64 rmask;
1935 unsigned i;
1936
1937 if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT) {
1938 /*
1939 * This return value is not great, but we do not want the
1940 * interrupt core code to remove our interrupt handler
1941 * because we don't appear to be handling an interrupt
1942 * during a chip reset.
1943 */
1944 ret = IRQ_HANDLED;
1945 goto bail;
1946 }
1947
1948 istat = qib_read_kreg64(dd, kr_intstatus);
1949
1950 if (unlikely(!istat)) {
1951 ret = IRQ_NONE; /* not our interrupt, or already handled */
1952 goto bail;
1953 }
1954 if (unlikely(istat == -1)) {
1955 qib_bad_intrstatus(dd);
1956 /* don't know if it was our interrupt or not */
1957 ret = IRQ_NONE;
1958 goto bail;
1959 }
1960
1961 qib_stats.sps_ints++;
1962 if (dd->int_counter != (u32) -1)
1963 dd->int_counter++;
1964
1965 if (unlikely(istat & (~QLOGIC_IB_I_BITSEXTANT |
1966 QLOGIC_IB_I_GPIO | QLOGIC_IB_I_ERROR)))
1967 unlikely_7220_intr(dd, istat);
1968
1969 /*
1970 * Clear the interrupt bits we found set, relatively early, so we
1971 * "know" know the chip will have seen this by the time we process
1972 * the queue, and will re-interrupt if necessary. The processor
1973 * itself won't take the interrupt again until we return.
1974 */
1975 qib_write_kreg(dd, kr_intclear, istat);
1976
1977 /*
1978 * Handle kernel receive queues before checking for pio buffers
1979 * available since receives can overflow; piobuf waiters can afford
1980 * a few extra cycles, since they were waiting anyway.
1981 */
1982 ctxtrbits = istat &
1983 ((QLOGIC_IB_I_RCVAVAIL_MASK << QLOGIC_IB_I_RCVAVAIL_SHIFT) |
1984 (QLOGIC_IB_I_RCVURG_MASK << QLOGIC_IB_I_RCVURG_SHIFT));
1985 if (ctxtrbits) {
1986 rmask = (1ULL << QLOGIC_IB_I_RCVAVAIL_SHIFT) |
1987 (1ULL << QLOGIC_IB_I_RCVURG_SHIFT);
1988 for (i = 0; i < dd->first_user_ctxt; i++) {
1989 if (ctxtrbits & rmask) {
1990 ctxtrbits &= ~rmask;
1991 qib_kreceive(dd->rcd[i], NULL, NULL);
1992 }
1993 rmask <<= 1;
1994 }
1995 if (ctxtrbits) {
1996 ctxtrbits =
1997 (ctxtrbits >> QLOGIC_IB_I_RCVAVAIL_SHIFT) |
1998 (ctxtrbits >> QLOGIC_IB_I_RCVURG_SHIFT);
1999 qib_handle_urcv(dd, ctxtrbits);
2000 }
2001 }
2002
2003 /* only call for SDmaInt */
2004 if (istat & QLOGIC_IB_I_SDMAINT)
2005 sdma_7220_intr(dd->pport, istat);
2006
2007 if ((istat & QLOGIC_IB_I_SPIOBUFAVAIL) && (dd->flags & QIB_INITTED))
2008 qib_ib_piobufavail(dd);
2009
2010 ret = IRQ_HANDLED;
2011 bail:
2012 return ret;
2013 }
2014
2015 /*
2016 * Set up our chip-specific interrupt handler.
2017 * The interrupt type has already been setup, so
2018 * we just need to do the registration and error checking.
2019 * If we are using MSI interrupts, we may fall back to
2020 * INTx later, if the interrupt handler doesn't get called
2021 * within 1/2 second (see verify_interrupt()).
2022 */
2023 static void qib_setup_7220_interrupt(struct qib_devdata *dd)
2024 {
2025 if (!dd->cspec->irq)
2026 qib_dev_err(dd, "irq is 0, BIOS error? Interrupts won't "
2027 "work\n");
2028 else {
2029 int ret = request_irq(dd->cspec->irq, qib_7220intr,
2030 dd->msi_lo ? 0 : IRQF_SHARED,
2031 QIB_DRV_NAME, dd);
2032
2033 if (ret)
2034 qib_dev_err(dd, "Couldn't setup %s interrupt "
2035 "(irq=%d): %d\n", dd->msi_lo ?
2036 "MSI" : "INTx", dd->cspec->irq, ret);
2037 }
2038 }
2039
2040 /**
2041 * qib_7220_boardname - fill in the board name
2042 * @dd: the qlogic_ib device
2043 *
2044 * info is based on the board revision register
2045 */
2046 static void qib_7220_boardname(struct qib_devdata *dd)
2047 {
2048 char *n;
2049 u32 boardid, namelen;
2050
2051 boardid = SYM_FIELD(dd->revision, Revision,
2052 BoardID);
2053
2054 switch (boardid) {
2055 case 1:
2056 n = "InfiniPath_QLE7240";
2057 break;
2058 case 2:
2059 n = "InfiniPath_QLE7280";
2060 break;
2061 default:
2062 qib_dev_err(dd, "Unknown 7220 board with ID %u\n", boardid);
2063 n = "Unknown_InfiniPath_7220";
2064 break;
2065 }
2066
2067 namelen = strlen(n) + 1;
2068 dd->boardname = kmalloc(namelen, GFP_KERNEL);
2069 if (!dd->boardname)
2070 qib_dev_err(dd, "Failed allocation for board name: %s\n", n);
2071 else
2072 snprintf(dd->boardname, namelen, "%s", n);
2073
2074 if (dd->majrev != 5 || !dd->minrev || dd->minrev > 2)
2075 qib_dev_err(dd, "Unsupported InfiniPath hardware "
2076 "revision %u.%u!\n",
2077 dd->majrev, dd->minrev);
2078
2079 snprintf(dd->boardversion, sizeof(dd->boardversion),
2080 "ChipABI %u.%u, %s, InfiniPath%u %u.%u, SW Compat %u\n",
2081 QIB_CHIP_VERS_MAJ, QIB_CHIP_VERS_MIN, dd->boardname,
2082 (unsigned)SYM_FIELD(dd->revision, Revision_R, Arch),
2083 dd->majrev, dd->minrev,
2084 (unsigned)SYM_FIELD(dd->revision, Revision_R, SW));
2085 }
2086
2087 /*
2088 * This routine sleeps, so it can only be called from user context, not
2089 * from interrupt context.
2090 */
2091 static int qib_setup_7220_reset(struct qib_devdata *dd)
2092 {
2093 u64 val;
2094 int i;
2095 int ret;
2096 u16 cmdval;
2097 u8 int_line, clinesz;
2098 unsigned long flags;
2099
2100 qib_pcie_getcmd(dd, &cmdval, &int_line, &clinesz);
2101
2102 /* Use dev_err so it shows up in logs, etc. */
2103 qib_dev_err(dd, "Resetting InfiniPath unit %u\n", dd->unit);
2104
2105 /* no interrupts till re-initted */
2106 qib_7220_set_intr_state(dd, 0);
2107
2108 dd->pport->cpspec->ibdeltainprog = 0;
2109 dd->pport->cpspec->ibsymdelta = 0;
2110 dd->pport->cpspec->iblnkerrdelta = 0;
2111
2112 /*
2113 * Keep chip from being accessed until we are ready. Use
2114 * writeq() directly, to allow the write even though QIB_PRESENT
2115 * isnt' set.
2116 */
2117 dd->flags &= ~(QIB_INITTED | QIB_PRESENT);
2118 dd->int_counter = 0; /* so we check interrupts work again */
2119 val = dd->control | QLOGIC_IB_C_RESET;
2120 writeq(val, &dd->kregbase[kr_control]);
2121 mb(); /* prevent compiler reordering around actual reset */
2122
2123 for (i = 1; i <= 5; i++) {
2124 /*
2125 * Allow MBIST, etc. to complete; longer on each retry.
2126 * We sometimes get machine checks from bus timeout if no
2127 * response, so for now, make it *really* long.
2128 */
2129 msleep(1000 + (1 + i) * 2000);
2130
2131 qib_pcie_reenable(dd, cmdval, int_line, clinesz);
2132
2133 /*
2134 * Use readq directly, so we don't need to mark it as PRESENT
2135 * until we get a successful indication that all is well.
2136 */
2137 val = readq(&dd->kregbase[kr_revision]);
2138 if (val == dd->revision) {
2139 dd->flags |= QIB_PRESENT; /* it's back */
2140 ret = qib_reinit_intr(dd);
2141 goto bail;
2142 }
2143 }
2144 ret = 0; /* failed */
2145
2146 bail:
2147 if (ret) {
2148 if (qib_pcie_params(dd, dd->lbus_width, NULL, NULL))
2149 qib_dev_err(dd, "Reset failed to setup PCIe or "
2150 "interrupts; continuing anyway\n");
2151
2152 /* hold IBC in reset, no sends, etc till later */
2153 qib_write_kreg(dd, kr_control, 0ULL);
2154
2155 /* clear the reset error, init error/hwerror mask */
2156 qib_7220_init_hwerrors(dd);
2157
2158 /* do setup similar to speed or link-width changes */
2159 if (dd->pport->cpspec->ibcddrctrl & IBA7220_IBC_IBTA_1_2_MASK)
2160 dd->cspec->presets_needed = 1;
2161 spin_lock_irqsave(&dd->pport->lflags_lock, flags);
2162 dd->pport->lflags |= QIBL_IB_FORCE_NOTIFY;
2163 dd->pport->lflags &= ~QIBL_IB_AUTONEG_FAILED;
2164 spin_unlock_irqrestore(&dd->pport->lflags_lock, flags);
2165 }
2166
2167 return ret;
2168 }
2169
2170 /**
2171 * qib_7220_put_tid - write a TID to the chip
2172 * @dd: the qlogic_ib device
2173 * @tidptr: pointer to the expected TID (in chip) to update
2174 * @tidtype: 0 for eager, 1 for expected
2175 * @pa: physical address of in memory buffer; tidinvalid if freeing
2176 */
2177 static void qib_7220_put_tid(struct qib_devdata *dd, u64 __iomem *tidptr,
2178 u32 type, unsigned long pa)
2179 {
2180 if (pa != dd->tidinvalid) {
2181 u64 chippa = pa >> IBA7220_TID_PA_SHIFT;
2182
2183 /* paranoia checks */
2184 if (pa != (chippa << IBA7220_TID_PA_SHIFT)) {
2185 qib_dev_err(dd, "Physaddr %lx not 2KB aligned!\n",
2186 pa);
2187 return;
2188 }
2189 if (chippa >= (1UL << IBA7220_TID_SZ_SHIFT)) {
2190 qib_dev_err(dd, "Physical page address 0x%lx "
2191 "larger than supported\n", pa);
2192 return;
2193 }
2194
2195 if (type == RCVHQ_RCV_TYPE_EAGER)
2196 chippa |= dd->tidtemplate;
2197 else /* for now, always full 4KB page */
2198 chippa |= IBA7220_TID_SZ_4K;
2199 pa = chippa;
2200 }
2201 writeq(pa, tidptr);
2202 mmiowb();
2203 }
2204
2205 /**
2206 * qib_7220_clear_tids - clear all TID entries for a ctxt, expected and eager
2207 * @dd: the qlogic_ib device
2208 * @ctxt: the ctxt
2209 *
2210 * clear all TID entries for a ctxt, expected and eager.
2211 * Used from qib_close(). On this chip, TIDs are only 32 bits,
2212 * not 64, but they are still on 64 bit boundaries, so tidbase
2213 * is declared as u64 * for the pointer math, even though we write 32 bits
2214 */
2215 static void qib_7220_clear_tids(struct qib_devdata *dd,
2216 struct qib_ctxtdata *rcd)
2217 {
2218 u64 __iomem *tidbase;
2219 unsigned long tidinv;
2220 u32 ctxt;
2221 int i;
2222
2223 if (!dd->kregbase || !rcd)
2224 return;
2225
2226 ctxt = rcd->ctxt;
2227
2228 tidinv = dd->tidinvalid;
2229 tidbase = (u64 __iomem *)
2230 ((char __iomem *)(dd->kregbase) +
2231 dd->rcvtidbase +
2232 ctxt * dd->rcvtidcnt * sizeof(*tidbase));
2233
2234 for (i = 0; i < dd->rcvtidcnt; i++)
2235 qib_7220_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EXPECTED,
2236 tidinv);
2237
2238 tidbase = (u64 __iomem *)
2239 ((char __iomem *)(dd->kregbase) +
2240 dd->rcvegrbase +
2241 rcd->rcvegr_tid_base * sizeof(*tidbase));
2242
2243 for (i = 0; i < rcd->rcvegrcnt; i++)
2244 qib_7220_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EAGER,
2245 tidinv);
2246 }
2247
2248 /**
2249 * qib_7220_tidtemplate - setup constants for TID updates
2250 * @dd: the qlogic_ib device
2251 *
2252 * We setup stuff that we use a lot, to avoid calculating each time
2253 */
2254 static void qib_7220_tidtemplate(struct qib_devdata *dd)
2255 {
2256 if (dd->rcvegrbufsize == 2048)
2257 dd->tidtemplate = IBA7220_TID_SZ_2K;
2258 else if (dd->rcvegrbufsize == 4096)
2259 dd->tidtemplate = IBA7220_TID_SZ_4K;
2260 dd->tidinvalid = 0;
2261 }
2262
2263 /**
2264 * qib_init_7220_get_base_info - set chip-specific flags for user code
2265 * @rcd: the qlogic_ib ctxt
2266 * @kbase: qib_base_info pointer
2267 *
2268 * We set the PCIE flag because the lower bandwidth on PCIe vs
2269 * HyperTransport can affect some user packet algorithims.
2270 */
2271 static int qib_7220_get_base_info(struct qib_ctxtdata *rcd,
2272 struct qib_base_info *kinfo)
2273 {
2274 kinfo->spi_runtime_flags |= QIB_RUNTIME_PCIE |
2275 QIB_RUNTIME_NODMA_RTAIL | QIB_RUNTIME_SDMA;
2276
2277 if (rcd->dd->flags & QIB_USE_SPCL_TRIG)
2278 kinfo->spi_runtime_flags |= QIB_RUNTIME_SPECIAL_TRIGGER;
2279
2280 return 0;
2281 }
2282
2283 static struct qib_message_header *
2284 qib_7220_get_msgheader(struct qib_devdata *dd, __le32 *rhf_addr)
2285 {
2286 u32 offset = qib_hdrget_offset(rhf_addr);
2287
2288 return (struct qib_message_header *)
2289 (rhf_addr - dd->rhf_offset + offset);
2290 }
2291
2292 static void qib_7220_config_ctxts(struct qib_devdata *dd)
2293 {
2294 unsigned long flags;
2295 u32 nchipctxts;
2296
2297 nchipctxts = qib_read_kreg32(dd, kr_portcnt);
2298 dd->cspec->numctxts = nchipctxts;
2299 if (qib_n_krcv_queues > 1) {
2300 dd->qpn_mask = 0x3f;
2301 dd->first_user_ctxt = qib_n_krcv_queues * dd->num_pports;
2302 if (dd->first_user_ctxt > nchipctxts)
2303 dd->first_user_ctxt = nchipctxts;
2304 } else
2305 dd->first_user_ctxt = dd->num_pports;
2306 dd->n_krcv_queues = dd->first_user_ctxt;
2307
2308 if (!qib_cfgctxts) {
2309 int nctxts = dd->first_user_ctxt + num_online_cpus();
2310
2311 if (nctxts <= 5)
2312 dd->ctxtcnt = 5;
2313 else if (nctxts <= 9)
2314 dd->ctxtcnt = 9;
2315 else if (nctxts <= nchipctxts)
2316 dd->ctxtcnt = nchipctxts;
2317 } else if (qib_cfgctxts <= nchipctxts)
2318 dd->ctxtcnt = qib_cfgctxts;
2319 if (!dd->ctxtcnt) /* none of the above, set to max */
2320 dd->ctxtcnt = nchipctxts;
2321
2322 /*
2323 * Chip can be configured for 5, 9, or 17 ctxts, and choice
2324 * affects number of eager TIDs per ctxt (1K, 2K, 4K).
2325 * Lock to be paranoid about later motion, etc.
2326 */
2327 spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags);
2328 if (dd->ctxtcnt > 9)
2329 dd->rcvctrl |= 2ULL << IBA7220_R_CTXTCFG_SHIFT;
2330 else if (dd->ctxtcnt > 5)
2331 dd->rcvctrl |= 1ULL << IBA7220_R_CTXTCFG_SHIFT;
2332 /* else configure for default 5 receive ctxts */
2333 if (dd->qpn_mask)
2334 dd->rcvctrl |= 1ULL << QIB_7220_RcvCtrl_RcvQPMapEnable_LSB;
2335 qib_write_kreg(dd, kr_rcvctrl, dd->rcvctrl);
2336 spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags);
2337
2338 /* kr_rcvegrcnt changes based on the number of contexts enabled */
2339 dd->cspec->rcvegrcnt = qib_read_kreg32(dd, kr_rcvegrcnt);
2340 dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt, IBA7220_KRCVEGRCNT);
2341 }
2342
2343 static int qib_7220_get_ib_cfg(struct qib_pportdata *ppd, int which)
2344 {
2345 int lsb, ret = 0;
2346 u64 maskr; /* right-justified mask */
2347
2348 switch (which) {
2349 case QIB_IB_CFG_LWID_ENB: /* Get allowed Link-width */
2350 ret = ppd->link_width_enabled;
2351 goto done;
2352
2353 case QIB_IB_CFG_LWID: /* Get currently active Link-width */
2354 ret = ppd->link_width_active;
2355 goto done;
2356
2357 case QIB_IB_CFG_SPD_ENB: /* Get allowed Link speeds */
2358 ret = ppd->link_speed_enabled;
2359 goto done;
2360
2361 case QIB_IB_CFG_SPD: /* Get current Link spd */
2362 ret = ppd->link_speed_active;
2363 goto done;
2364
2365 case QIB_IB_CFG_RXPOL_ENB: /* Get Auto-RX-polarity enable */
2366 lsb = IBA7220_IBC_RXPOL_SHIFT;
2367 maskr = IBA7220_IBC_RXPOL_MASK;
2368 break;
2369
2370 case QIB_IB_CFG_LREV_ENB: /* Get Auto-Lane-reversal enable */
2371 lsb = IBA7220_IBC_LREV_SHIFT;
2372 maskr = IBA7220_IBC_LREV_MASK;
2373 break;
2374
2375 case QIB_IB_CFG_LINKLATENCY:
2376 ret = qib_read_kreg64(ppd->dd, kr_ibcddrstatus)
2377 & IBA7220_DDRSTAT_LINKLAT_MASK;
2378 goto done;
2379
2380 case QIB_IB_CFG_OP_VLS:
2381 ret = ppd->vls_operational;
2382 goto done;
2383
2384 case QIB_IB_CFG_VL_HIGH_CAP:
2385 ret = 0;
2386 goto done;
2387
2388 case QIB_IB_CFG_VL_LOW_CAP:
2389 ret = 0;
2390 goto done;
2391
2392 case QIB_IB_CFG_OVERRUN_THRESH: /* IB overrun threshold */
2393 ret = SYM_FIELD(ppd->cpspec->ibcctrl, IBCCtrl,
2394 OverrunThreshold);
2395 goto done;
2396
2397 case QIB_IB_CFG_PHYERR_THRESH: /* IB PHY error threshold */
2398 ret = SYM_FIELD(ppd->cpspec->ibcctrl, IBCCtrl,
2399 PhyerrThreshold);
2400 goto done;
2401
2402 case QIB_IB_CFG_LINKDEFAULT: /* IB link default (sleep/poll) */
2403 /* will only take effect when the link state changes */
2404 ret = (ppd->cpspec->ibcctrl &
2405 SYM_MASK(IBCCtrl, LinkDownDefaultState)) ?
2406 IB_LINKINITCMD_SLEEP : IB_LINKINITCMD_POLL;
2407 goto done;
2408
2409 case QIB_IB_CFG_HRTBT: /* Get Heartbeat off/enable/auto */
2410 lsb = IBA7220_IBC_HRTBT_SHIFT;
2411 maskr = IBA7220_IBC_HRTBT_MASK;
2412 break;
2413
2414 case QIB_IB_CFG_PMA_TICKS:
2415 /*
2416 * 0x00 = 10x link transfer rate or 4 nsec. for 2.5Gbs
2417 * Since the clock is always 250MHz, the value is 1 or 0.
2418 */
2419 ret = (ppd->link_speed_active == QIB_IB_DDR);
2420 goto done;
2421
2422 default:
2423 ret = -EINVAL;
2424 goto done;
2425 }
2426 ret = (int)((ppd->cpspec->ibcddrctrl >> lsb) & maskr);
2427 done:
2428 return ret;
2429 }
2430
2431 static int qib_7220_set_ib_cfg(struct qib_pportdata *ppd, int which, u32 val)
2432 {
2433 struct qib_devdata *dd = ppd->dd;
2434 u64 maskr; /* right-justified mask */
2435 int lsb, ret = 0, setforce = 0;
2436 u16 lcmd, licmd;
2437 unsigned long flags;
2438
2439 switch (which) {
2440 case QIB_IB_CFG_LIDLMC:
2441 /*
2442 * Set LID and LMC. Combined to avoid possible hazard
2443 * caller puts LMC in 16MSbits, DLID in 16LSbits of val
2444 */
2445 lsb = IBA7220_IBC_DLIDLMC_SHIFT;
2446 maskr = IBA7220_IBC_DLIDLMC_MASK;
2447 break;
2448
2449 case QIB_IB_CFG_LWID_ENB: /* set allowed Link-width */
2450 /*
2451 * As with speed, only write the actual register if
2452 * the link is currently down, otherwise takes effect
2453 * on next link change.
2454 */
2455 ppd->link_width_enabled = val;
2456 if (!(ppd->lflags & QIBL_LINKDOWN))
2457 goto bail;
2458 /*
2459 * We set the QIBL_IB_FORCE_NOTIFY bit so updown
2460 * will get called because we want update
2461 * link_width_active, and the change may not take
2462 * effect for some time (if we are in POLL), so this
2463 * flag will force the updown routine to be called
2464 * on the next ibstatuschange down interrupt, even
2465 * if it's not an down->up transition.
2466 */
2467 val--; /* convert from IB to chip */
2468 maskr = IBA7220_IBC_WIDTH_MASK;
2469 lsb = IBA7220_IBC_WIDTH_SHIFT;
2470 setforce = 1;
2471 spin_lock_irqsave(&ppd->lflags_lock, flags);
2472 ppd->lflags |= QIBL_IB_FORCE_NOTIFY;
2473 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
2474 break;
2475
2476 case QIB_IB_CFG_SPD_ENB: /* set allowed Link speeds */
2477 /*
2478 * If we turn off IB1.2, need to preset SerDes defaults,
2479 * but not right now. Set a flag for the next time
2480 * we command the link down. As with width, only write the
2481 * actual register if the link is currently down, otherwise
2482 * takes effect on next link change. Since setting is being
2483 * explictly requested (via MAD or sysfs), clear autoneg
2484 * failure status if speed autoneg is enabled.
2485 */
2486 ppd->link_speed_enabled = val;
2487 if ((ppd->cpspec->ibcddrctrl & IBA7220_IBC_IBTA_1_2_MASK) &&
2488 !(val & (val - 1)))
2489 dd->cspec->presets_needed = 1;
2490 if (!(ppd->lflags & QIBL_LINKDOWN))
2491 goto bail;
2492 /*
2493 * We set the QIBL_IB_FORCE_NOTIFY bit so updown
2494 * will get called because we want update
2495 * link_speed_active, and the change may not take
2496 * effect for some time (if we are in POLL), so this
2497 * flag will force the updown routine to be called
2498 * on the next ibstatuschange down interrupt, even
2499 * if it's not an down->up transition.
2500 */
2501 if (val == (QIB_IB_SDR | QIB_IB_DDR)) {
2502 val = IBA7220_IBC_SPEED_AUTONEG_MASK |
2503 IBA7220_IBC_IBTA_1_2_MASK;
2504 spin_lock_irqsave(&ppd->lflags_lock, flags);
2505 ppd->lflags &= ~QIBL_IB_AUTONEG_FAILED;
2506 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
2507 } else
2508 val = val == QIB_IB_DDR ?
2509 IBA7220_IBC_SPEED_DDR : IBA7220_IBC_SPEED_SDR;
2510 maskr = IBA7220_IBC_SPEED_AUTONEG_MASK |
2511 IBA7220_IBC_IBTA_1_2_MASK;
2512 /* IBTA 1.2 mode + speed bits are contiguous */
2513 lsb = SYM_LSB(IBCDDRCtrl, IB_ENHANCED_MODE);
2514 setforce = 1;
2515 break;
2516
2517 case QIB_IB_CFG_RXPOL_ENB: /* set Auto-RX-polarity enable */
2518 lsb = IBA7220_IBC_RXPOL_SHIFT;
2519 maskr = IBA7220_IBC_RXPOL_MASK;
2520 break;
2521
2522 case QIB_IB_CFG_LREV_ENB: /* set Auto-Lane-reversal enable */
2523 lsb = IBA7220_IBC_LREV_SHIFT;
2524 maskr = IBA7220_IBC_LREV_MASK;
2525 break;
2526
2527 case QIB_IB_CFG_OVERRUN_THRESH: /* IB overrun threshold */
2528 maskr = SYM_FIELD(ppd->cpspec->ibcctrl, IBCCtrl,
2529 OverrunThreshold);
2530 if (maskr != val) {
2531 ppd->cpspec->ibcctrl &=
2532 ~SYM_MASK(IBCCtrl, OverrunThreshold);
2533 ppd->cpspec->ibcctrl |= (u64) val <<
2534 SYM_LSB(IBCCtrl, OverrunThreshold);
2535 qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl);
2536 qib_write_kreg(dd, kr_scratch, 0);
2537 }
2538 goto bail;
2539
2540 case QIB_IB_CFG_PHYERR_THRESH: /* IB PHY error threshold */
2541 maskr = SYM_FIELD(ppd->cpspec->ibcctrl, IBCCtrl,
2542 PhyerrThreshold);
2543 if (maskr != val) {
2544 ppd->cpspec->ibcctrl &=
2545 ~SYM_MASK(IBCCtrl, PhyerrThreshold);
2546 ppd->cpspec->ibcctrl |= (u64) val <<
2547 SYM_LSB(IBCCtrl, PhyerrThreshold);
2548 qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl);
2549 qib_write_kreg(dd, kr_scratch, 0);
2550 }
2551 goto bail;
2552
2553 case QIB_IB_CFG_PKEYS: /* update pkeys */
2554 maskr = (u64) ppd->pkeys[0] | ((u64) ppd->pkeys[1] << 16) |
2555 ((u64) ppd->pkeys[2] << 32) |
2556 ((u64) ppd->pkeys[3] << 48);
2557 qib_write_kreg(dd, kr_partitionkey, maskr);
2558 goto bail;
2559
2560 case QIB_IB_CFG_LINKDEFAULT: /* IB link default (sleep/poll) */
2561 /* will only take effect when the link state changes */
2562 if (val == IB_LINKINITCMD_POLL)
2563 ppd->cpspec->ibcctrl &=
2564 ~SYM_MASK(IBCCtrl, LinkDownDefaultState);
2565 else /* SLEEP */
2566 ppd->cpspec->ibcctrl |=
2567 SYM_MASK(IBCCtrl, LinkDownDefaultState);
2568 qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl);
2569 qib_write_kreg(dd, kr_scratch, 0);
2570 goto bail;
2571
2572 case QIB_IB_CFG_MTU: /* update the MTU in IBC */
2573 /*
2574 * Update our housekeeping variables, and set IBC max
2575 * size, same as init code; max IBC is max we allow in
2576 * buffer, less the qword pbc, plus 1 for ICRC, in dwords
2577 * Set even if it's unchanged, print debug message only
2578 * on changes.
2579 */
2580 val = (ppd->ibmaxlen >> 2) + 1;
2581 ppd->cpspec->ibcctrl &= ~SYM_MASK(IBCCtrl, MaxPktLen);
2582 ppd->cpspec->ibcctrl |= (u64)val << SYM_LSB(IBCCtrl, MaxPktLen);
2583 qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl);
2584 qib_write_kreg(dd, kr_scratch, 0);
2585 goto bail;
2586
2587 case QIB_IB_CFG_LSTATE: /* set the IB link state */
2588 switch (val & 0xffff0000) {
2589 case IB_LINKCMD_DOWN:
2590 lcmd = QLOGIC_IB_IBCC_LINKCMD_DOWN;
2591 if (!ppd->cpspec->ibdeltainprog &&
2592 qib_compat_ddr_negotiate) {
2593 ppd->cpspec->ibdeltainprog = 1;
2594 ppd->cpspec->ibsymsnap =
2595 read_7220_creg32(dd, cr_ibsymbolerr);
2596 ppd->cpspec->iblnkerrsnap =
2597 read_7220_creg32(dd, cr_iblinkerrrecov);
2598 }
2599 break;
2600
2601 case IB_LINKCMD_ARMED:
2602 lcmd = QLOGIC_IB_IBCC_LINKCMD_ARMED;
2603 break;
2604
2605 case IB_LINKCMD_ACTIVE:
2606 lcmd = QLOGIC_IB_IBCC_LINKCMD_ACTIVE;
2607 break;
2608
2609 default:
2610 ret = -EINVAL;
2611 qib_dev_err(dd, "bad linkcmd req 0x%x\n", val >> 16);
2612 goto bail;
2613 }
2614 switch (val & 0xffff) {
2615 case IB_LINKINITCMD_NOP:
2616 licmd = 0;
2617 break;
2618
2619 case IB_LINKINITCMD_POLL:
2620 licmd = QLOGIC_IB_IBCC_LINKINITCMD_POLL;
2621 break;
2622
2623 case IB_LINKINITCMD_SLEEP:
2624 licmd = QLOGIC_IB_IBCC_LINKINITCMD_SLEEP;
2625 break;
2626
2627 case IB_LINKINITCMD_DISABLE:
2628 licmd = QLOGIC_IB_IBCC_LINKINITCMD_DISABLE;
2629 ppd->cpspec->chase_end = 0;
2630 /*
2631 * stop state chase counter and timer, if running.
2632 * wait forpending timer, but don't clear .data (ppd)!
2633 */
2634 if (ppd->cpspec->chase_timer.expires) {
2635 del_timer_sync(&ppd->cpspec->chase_timer);
2636 ppd->cpspec->chase_timer.expires = 0;
2637 }
2638 break;
2639
2640 default:
2641 ret = -EINVAL;
2642 qib_dev_err(dd, "bad linkinitcmd req 0x%x\n",
2643 val & 0xffff);
2644 goto bail;
2645 }
2646 qib_set_ib_7220_lstate(ppd, lcmd, licmd);
2647 goto bail;
2648
2649 case QIB_IB_CFG_HRTBT: /* set Heartbeat off/enable/auto */
2650 if (val > IBA7220_IBC_HRTBT_MASK) {
2651 ret = -EINVAL;
2652 goto bail;
2653 }
2654 lsb = IBA7220_IBC_HRTBT_SHIFT;
2655 maskr = IBA7220_IBC_HRTBT_MASK;
2656 break;
2657
2658 default:
2659 ret = -EINVAL;
2660 goto bail;
2661 }
2662 ppd->cpspec->ibcddrctrl &= ~(maskr << lsb);
2663 ppd->cpspec->ibcddrctrl |= (((u64) val & maskr) << lsb);
2664 qib_write_kreg(dd, kr_ibcddrctrl, ppd->cpspec->ibcddrctrl);
2665 qib_write_kreg(dd, kr_scratch, 0);
2666 if (setforce) {
2667 spin_lock_irqsave(&ppd->lflags_lock, flags);
2668 ppd->lflags |= QIBL_IB_FORCE_NOTIFY;
2669 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
2670 }
2671 bail:
2672 return ret;
2673 }
2674
2675 static int qib_7220_set_loopback(struct qib_pportdata *ppd, const char *what)
2676 {
2677 int ret = 0;
2678 u64 val, ddr;
2679
2680 if (!strncmp(what, "ibc", 3)) {
2681 ppd->cpspec->ibcctrl |= SYM_MASK(IBCCtrl, Loopback);
2682 val = 0; /* disable heart beat, so link will come up */
2683 qib_devinfo(ppd->dd->pcidev, "Enabling IB%u:%u IBC loopback\n",
2684 ppd->dd->unit, ppd->port);
2685 } else if (!strncmp(what, "off", 3)) {
2686 ppd->cpspec->ibcctrl &= ~SYM_MASK(IBCCtrl, Loopback);
2687 /* enable heart beat again */
2688 val = IBA7220_IBC_HRTBT_MASK << IBA7220_IBC_HRTBT_SHIFT;
2689 qib_devinfo(ppd->dd->pcidev, "Disabling IB%u:%u IBC loopback "
2690 "(normal)\n", ppd->dd->unit, ppd->port);
2691 } else
2692 ret = -EINVAL;
2693 if (!ret) {
2694 qib_write_kreg(ppd->dd, kr_ibcctrl, ppd->cpspec->ibcctrl);
2695 ddr = ppd->cpspec->ibcddrctrl & ~(IBA7220_IBC_HRTBT_MASK
2696 << IBA7220_IBC_HRTBT_SHIFT);
2697 ppd->cpspec->ibcddrctrl = ddr | val;
2698 qib_write_kreg(ppd->dd, kr_ibcddrctrl,
2699 ppd->cpspec->ibcddrctrl);
2700 qib_write_kreg(ppd->dd, kr_scratch, 0);
2701 }
2702 return ret;
2703 }
2704
2705 static void qib_update_7220_usrhead(struct qib_ctxtdata *rcd, u64 hd,
2706 u32 updegr, u32 egrhd)
2707 {
2708 qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
2709 if (updegr)
2710 qib_write_ureg(rcd->dd, ur_rcvegrindexhead, egrhd, rcd->ctxt);
2711 }
2712
2713 static u32 qib_7220_hdrqempty(struct qib_ctxtdata *rcd)
2714 {
2715 u32 head, tail;
2716
2717 head = qib_read_ureg32(rcd->dd, ur_rcvhdrhead, rcd->ctxt);
2718 if (rcd->rcvhdrtail_kvaddr)
2719 tail = qib_get_rcvhdrtail(rcd);
2720 else
2721 tail = qib_read_ureg32(rcd->dd, ur_rcvhdrtail, rcd->ctxt);
2722 return head == tail;
2723 }
2724
2725 /*
2726 * Modify the RCVCTRL register in chip-specific way. This
2727 * is a function because bit positions and (future) register
2728 * location is chip-specifc, but the needed operations are
2729 * generic. <op> is a bit-mask because we often want to
2730 * do multiple modifications.
2731 */
2732 static void rcvctrl_7220_mod(struct qib_pportdata *ppd, unsigned int op,
2733 int ctxt)
2734 {
2735 struct qib_devdata *dd = ppd->dd;
2736 u64 mask, val;
2737 unsigned long flags;
2738
2739 spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags);
2740 if (op & QIB_RCVCTRL_TAILUPD_ENB)
2741 dd->rcvctrl |= (1ULL << IBA7220_R_TAILUPD_SHIFT);
2742 if (op & QIB_RCVCTRL_TAILUPD_DIS)
2743 dd->rcvctrl &= ~(1ULL << IBA7220_R_TAILUPD_SHIFT);
2744 if (op & QIB_RCVCTRL_PKEY_ENB)
2745 dd->rcvctrl &= ~(1ULL << IBA7220_R_PKEY_DIS_SHIFT);
2746 if (op & QIB_RCVCTRL_PKEY_DIS)
2747 dd->rcvctrl |= (1ULL << IBA7220_R_PKEY_DIS_SHIFT);
2748 if (ctxt < 0)
2749 mask = (1ULL << dd->ctxtcnt) - 1;
2750 else
2751 mask = (1ULL << ctxt);
2752 if (op & QIB_RCVCTRL_CTXT_ENB) {
2753 /* always done for specific ctxt */
2754 dd->rcvctrl |= (mask << SYM_LSB(RcvCtrl, PortEnable));
2755 if (!(dd->flags & QIB_NODMA_RTAIL))
2756 dd->rcvctrl |= 1ULL << IBA7220_R_TAILUPD_SHIFT;
2757 /* Write these registers before the context is enabled. */
2758 qib_write_kreg_ctxt(dd, kr_rcvhdrtailaddr, ctxt,
2759 dd->rcd[ctxt]->rcvhdrqtailaddr_phys);
2760 qib_write_kreg_ctxt(dd, kr_rcvhdraddr, ctxt,
2761 dd->rcd[ctxt]->rcvhdrq_phys);
2762 dd->rcd[ctxt]->seq_cnt = 1;
2763 }
2764 if (op & QIB_RCVCTRL_CTXT_DIS)
2765 dd->rcvctrl &= ~(mask << SYM_LSB(RcvCtrl, PortEnable));
2766 if (op & QIB_RCVCTRL_INTRAVAIL_ENB)
2767 dd->rcvctrl |= (mask << IBA7220_R_INTRAVAIL_SHIFT);
2768 if (op & QIB_RCVCTRL_INTRAVAIL_DIS)
2769 dd->rcvctrl &= ~(mask << IBA7220_R_INTRAVAIL_SHIFT);
2770 qib_write_kreg(dd, kr_rcvctrl, dd->rcvctrl);
2771 if ((op & QIB_RCVCTRL_INTRAVAIL_ENB) && dd->rhdrhead_intr_off) {
2772 /* arm rcv interrupt */
2773 val = qib_read_ureg32(dd, ur_rcvhdrhead, ctxt) |
2774 dd->rhdrhead_intr_off;
2775 qib_write_ureg(dd, ur_rcvhdrhead, val, ctxt);
2776 }
2777 if (op & QIB_RCVCTRL_CTXT_ENB) {
2778 /*
2779 * Init the context registers also; if we were
2780 * disabled, tail and head should both be zero
2781 * already from the enable, but since we don't
2782 * know, we have to do it explictly.
2783 */
2784 val = qib_read_ureg32(dd, ur_rcvegrindextail, ctxt);
2785 qib_write_ureg(dd, ur_rcvegrindexhead, val, ctxt);
2786
2787 val = qib_read_ureg32(dd, ur_rcvhdrtail, ctxt);
2788 dd->rcd[ctxt]->head = val;
2789 /* If kctxt, interrupt on next receive. */
2790 if (ctxt < dd->first_user_ctxt)
2791 val |= dd->rhdrhead_intr_off;
2792 qib_write_ureg(dd, ur_rcvhdrhead, val, ctxt);
2793 }
2794 if (op & QIB_RCVCTRL_CTXT_DIS) {
2795 if (ctxt >= 0) {
2796 qib_write_kreg_ctxt(dd, kr_rcvhdrtailaddr, ctxt, 0);
2797 qib_write_kreg_ctxt(dd, kr_rcvhdraddr, ctxt, 0);
2798 } else {
2799 unsigned i;
2800
2801 for (i = 0; i < dd->cfgctxts; i++) {
2802 qib_write_kreg_ctxt(dd, kr_rcvhdrtailaddr,
2803 i, 0);
2804 qib_write_kreg_ctxt(dd, kr_rcvhdraddr, i, 0);
2805 }
2806 }
2807 }
2808 spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags);
2809 }
2810
2811 /*
2812 * Modify the SENDCTRL register in chip-specific way. This
2813 * is a function there may be multiple such registers with
2814 * slightly different layouts. To start, we assume the
2815 * "canonical" register layout of the first chips.
2816 * Chip requires no back-back sendctrl writes, so write
2817 * scratch register after writing sendctrl
2818 */
2819 static void sendctrl_7220_mod(struct qib_pportdata *ppd, u32 op)
2820 {
2821 struct qib_devdata *dd = ppd->dd;
2822 u64 tmp_dd_sendctrl;
2823 unsigned long flags;
2824
2825 spin_lock_irqsave(&dd->sendctrl_lock, flags);
2826
2827 /* First the ones that are "sticky", saved in shadow */
2828 if (op & QIB_SENDCTRL_CLEAR)
2829 dd->sendctrl = 0;
2830 if (op & QIB_SENDCTRL_SEND_DIS)
2831 dd->sendctrl &= ~SYM_MASK(SendCtrl, SPioEnable);
2832 else if (op & QIB_SENDCTRL_SEND_ENB) {
2833 dd->sendctrl |= SYM_MASK(SendCtrl, SPioEnable);
2834 if (dd->flags & QIB_USE_SPCL_TRIG)
2835 dd->sendctrl |= SYM_MASK(SendCtrl,
2836 SSpecialTriggerEn);
2837 }
2838 if (op & QIB_SENDCTRL_AVAIL_DIS)
2839 dd->sendctrl &= ~SYM_MASK(SendCtrl, SendBufAvailUpd);
2840 else if (op & QIB_SENDCTRL_AVAIL_ENB)
2841 dd->sendctrl |= SYM_MASK(SendCtrl, SendBufAvailUpd);
2842
2843 if (op & QIB_SENDCTRL_DISARM_ALL) {
2844 u32 i, last;
2845
2846 tmp_dd_sendctrl = dd->sendctrl;
2847 /*
2848 * disarm any that are not yet launched, disabling sends
2849 * and updates until done.
2850 */
2851 last = dd->piobcnt2k + dd->piobcnt4k;
2852 tmp_dd_sendctrl &=
2853 ~(SYM_MASK(SendCtrl, SPioEnable) |
2854 SYM_MASK(SendCtrl, SendBufAvailUpd));
2855 for (i = 0; i < last; i++) {
2856 qib_write_kreg(dd, kr_sendctrl,
2857 tmp_dd_sendctrl |
2858 SYM_MASK(SendCtrl, Disarm) | i);
2859 qib_write_kreg(dd, kr_scratch, 0);
2860 }
2861 }
2862
2863 tmp_dd_sendctrl = dd->sendctrl;
2864
2865 if (op & QIB_SENDCTRL_FLUSH)
2866 tmp_dd_sendctrl |= SYM_MASK(SendCtrl, Abort);
2867 if (op & QIB_SENDCTRL_DISARM)
2868 tmp_dd_sendctrl |= SYM_MASK(SendCtrl, Disarm) |
2869 ((op & QIB_7220_SendCtrl_DisarmPIOBuf_RMASK) <<
2870 SYM_LSB(SendCtrl, DisarmPIOBuf));
2871 if ((op & QIB_SENDCTRL_AVAIL_BLIP) &&
2872 (dd->sendctrl & SYM_MASK(SendCtrl, SendBufAvailUpd)))
2873 tmp_dd_sendctrl &= ~SYM_MASK(SendCtrl, SendBufAvailUpd);
2874
2875 qib_write_kreg(dd, kr_sendctrl, tmp_dd_sendctrl);
2876 qib_write_kreg(dd, kr_scratch, 0);
2877
2878 if (op & QIB_SENDCTRL_AVAIL_BLIP) {
2879 qib_write_kreg(dd, kr_sendctrl, dd->sendctrl);
2880 qib_write_kreg(dd, kr_scratch, 0);
2881 }
2882
2883 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
2884
2885 if (op & QIB_SENDCTRL_FLUSH) {
2886 u32 v;
2887 /*
2888 * ensure writes have hit chip, then do a few
2889 * more reads, to allow DMA of pioavail registers
2890 * to occur, so in-memory copy is in sync with
2891 * the chip. Not always safe to sleep.
2892 */
2893 v = qib_read_kreg32(dd, kr_scratch);
2894 qib_write_kreg(dd, kr_scratch, v);
2895 v = qib_read_kreg32(dd, kr_scratch);
2896 qib_write_kreg(dd, kr_scratch, v);
2897 qib_read_kreg32(dd, kr_scratch);
2898 }
2899 }
2900
2901 /**
2902 * qib_portcntr_7220 - read a per-port counter
2903 * @dd: the qlogic_ib device
2904 * @creg: the counter to snapshot
2905 */
2906 static u64 qib_portcntr_7220(struct qib_pportdata *ppd, u32 reg)
2907 {
2908 u64 ret = 0ULL;
2909 struct qib_devdata *dd = ppd->dd;
2910 u16 creg;
2911 /* 0xffff for unimplemented or synthesized counters */
2912 static const u16 xlator[] = {
2913 [QIBPORTCNTR_PKTSEND] = cr_pktsend,
2914 [QIBPORTCNTR_WORDSEND] = cr_wordsend,
2915 [QIBPORTCNTR_PSXMITDATA] = cr_psxmitdatacount,
2916 [QIBPORTCNTR_PSXMITPKTS] = cr_psxmitpktscount,
2917 [QIBPORTCNTR_PSXMITWAIT] = cr_psxmitwaitcount,
2918 [QIBPORTCNTR_SENDSTALL] = cr_sendstall,
2919 [QIBPORTCNTR_PKTRCV] = cr_pktrcv,
2920 [QIBPORTCNTR_PSRCVDATA] = cr_psrcvdatacount,
2921 [QIBPORTCNTR_PSRCVPKTS] = cr_psrcvpktscount,
2922 [QIBPORTCNTR_RCVEBP] = cr_rcvebp,
2923 [QIBPORTCNTR_RCVOVFL] = cr_rcvovfl,
2924 [QIBPORTCNTR_WORDRCV] = cr_wordrcv,
2925 [QIBPORTCNTR_RXDROPPKT] = cr_rxdroppkt,
2926 [QIBPORTCNTR_RXLOCALPHYERR] = cr_rxotherlocalphyerr,
2927 [QIBPORTCNTR_RXVLERR] = cr_rxvlerr,
2928 [QIBPORTCNTR_ERRICRC] = cr_erricrc,
2929 [QIBPORTCNTR_ERRVCRC] = cr_errvcrc,
2930 [QIBPORTCNTR_ERRLPCRC] = cr_errlpcrc,
2931 [QIBPORTCNTR_BADFORMAT] = cr_badformat,
2932 [QIBPORTCNTR_ERR_RLEN] = cr_err_rlen,
2933 [QIBPORTCNTR_IBSYMBOLERR] = cr_ibsymbolerr,
2934 [QIBPORTCNTR_INVALIDRLEN] = cr_invalidrlen,
2935 [QIBPORTCNTR_UNSUPVL] = cr_txunsupvl,
2936 [QIBPORTCNTR_EXCESSBUFOVFL] = cr_excessbufferovfl,
2937 [QIBPORTCNTR_ERRLINK] = cr_errlink,
2938 [QIBPORTCNTR_IBLINKDOWN] = cr_iblinkdown,
2939 [QIBPORTCNTR_IBLINKERRRECOV] = cr_iblinkerrrecov,
2940 [QIBPORTCNTR_LLI] = cr_locallinkintegrityerr,
2941 [QIBPORTCNTR_PSINTERVAL] = cr_psinterval,
2942 [QIBPORTCNTR_PSSTART] = cr_psstart,
2943 [QIBPORTCNTR_PSSTAT] = cr_psstat,
2944 [QIBPORTCNTR_VL15PKTDROP] = cr_vl15droppedpkt,
2945 [QIBPORTCNTR_ERRPKEY] = cr_errpkey,
2946 [QIBPORTCNTR_KHDROVFL] = 0xffff,
2947 };
2948
2949 if (reg >= ARRAY_SIZE(xlator)) {
2950 qib_devinfo(ppd->dd->pcidev,
2951 "Unimplemented portcounter %u\n", reg);
2952 goto done;
2953 }
2954 creg = xlator[reg];
2955
2956 if (reg == QIBPORTCNTR_KHDROVFL) {
2957 int i;
2958
2959 /* sum over all kernel contexts */
2960 for (i = 0; i < dd->first_user_ctxt; i++)
2961 ret += read_7220_creg32(dd, cr_portovfl + i);
2962 }
2963 if (creg == 0xffff)
2964 goto done;
2965
2966 /*
2967 * only fast incrementing counters are 64bit; use 32 bit reads to
2968 * avoid two independent reads when on opteron
2969 */
2970 if ((creg == cr_wordsend || creg == cr_wordrcv ||
2971 creg == cr_pktsend || creg == cr_pktrcv))
2972 ret = read_7220_creg(dd, creg);
2973 else
2974 ret = read_7220_creg32(dd, creg);
2975 if (creg == cr_ibsymbolerr) {
2976 if (dd->pport->cpspec->ibdeltainprog)
2977 ret -= ret - ppd->cpspec->ibsymsnap;
2978 ret -= dd->pport->cpspec->ibsymdelta;
2979 } else if (creg == cr_iblinkerrrecov) {
2980 if (dd->pport->cpspec->ibdeltainprog)
2981 ret -= ret - ppd->cpspec->iblnkerrsnap;
2982 ret -= dd->pport->cpspec->iblnkerrdelta;
2983 }
2984 done:
2985 return ret;
2986 }
2987
2988 /*
2989 * Device counter names (not port-specific), one line per stat,
2990 * single string. Used by utilities like ipathstats to print the stats
2991 * in a way which works for different versions of drivers, without changing
2992 * the utility. Names need to be 12 chars or less (w/o newline), for proper
2993 * display by utility.
2994 * Non-error counters are first.
2995 * Start of "error" conters is indicated by a leading "E " on the first
2996 * "error" counter, and doesn't count in label length.
2997 * The EgrOvfl list needs to be last so we truncate them at the configured
2998 * context count for the device.
2999 * cntr7220indices contains the corresponding register indices.
3000 */
3001 static const char cntr7220names[] =
3002 "Interrupts\n"
3003 "HostBusStall\n"
3004 "E RxTIDFull\n"
3005 "RxTIDInvalid\n"
3006 "Ctxt0EgrOvfl\n"
3007 "Ctxt1EgrOvfl\n"
3008 "Ctxt2EgrOvfl\n"
3009 "Ctxt3EgrOvfl\n"
3010 "Ctxt4EgrOvfl\n"
3011 "Ctxt5EgrOvfl\n"
3012 "Ctxt6EgrOvfl\n"
3013 "Ctxt7EgrOvfl\n"
3014 "Ctxt8EgrOvfl\n"
3015 "Ctxt9EgrOvfl\n"
3016 "Ctx10EgrOvfl\n"
3017 "Ctx11EgrOvfl\n"
3018 "Ctx12EgrOvfl\n"
3019 "Ctx13EgrOvfl\n"
3020 "Ctx14EgrOvfl\n"
3021 "Ctx15EgrOvfl\n"
3022 "Ctx16EgrOvfl\n";
3023
3024 static const size_t cntr7220indices[] = {
3025 cr_lbint,
3026 cr_lbflowstall,
3027 cr_errtidfull,
3028 cr_errtidvalid,
3029 cr_portovfl + 0,
3030 cr_portovfl + 1,
3031 cr_portovfl + 2,
3032 cr_portovfl + 3,
3033 cr_portovfl + 4,
3034 cr_portovfl + 5,
3035 cr_portovfl + 6,
3036 cr_portovfl + 7,
3037 cr_portovfl + 8,
3038 cr_portovfl + 9,
3039 cr_portovfl + 10,
3040 cr_portovfl + 11,
3041 cr_portovfl + 12,
3042 cr_portovfl + 13,
3043 cr_portovfl + 14,
3044 cr_portovfl + 15,
3045 cr_portovfl + 16,
3046 };
3047
3048 /*
3049 * same as cntr7220names and cntr7220indices, but for port-specific counters.
3050 * portcntr7220indices is somewhat complicated by some registers needing
3051 * adjustments of various kinds, and those are ORed with _PORT_VIRT_FLAG
3052 */
3053 static const char portcntr7220names[] =
3054 "TxPkt\n"
3055 "TxFlowPkt\n"
3056 "TxWords\n"
3057 "RxPkt\n"
3058 "RxFlowPkt\n"
3059 "RxWords\n"
3060 "TxFlowStall\n"
3061 "TxDmaDesc\n" /* 7220 and 7322-only */
3062 "E RxDlidFltr\n" /* 7220 and 7322-only */
3063 "IBStatusChng\n"
3064 "IBLinkDown\n"
3065 "IBLnkRecov\n"
3066 "IBRxLinkErr\n"
3067 "IBSymbolErr\n"
3068 "RxLLIErr\n"
3069 "RxBadFormat\n"
3070 "RxBadLen\n"
3071 "RxBufOvrfl\n"
3072 "RxEBP\n"
3073 "RxFlowCtlErr\n"
3074 "RxICRCerr\n"
3075 "RxLPCRCerr\n"
3076 "RxVCRCerr\n"
3077 "RxInvalLen\n"
3078 "RxInvalPKey\n"
3079 "RxPktDropped\n"
3080 "TxBadLength\n"
3081 "TxDropped\n"
3082 "TxInvalLen\n"
3083 "TxUnderrun\n"
3084 "TxUnsupVL\n"
3085 "RxLclPhyErr\n" /* 7220 and 7322-only */
3086 "RxVL15Drop\n" /* 7220 and 7322-only */
3087 "RxVlErr\n" /* 7220 and 7322-only */
3088 "XcessBufOvfl\n" /* 7220 and 7322-only */
3089 ;
3090
3091 #define _PORT_VIRT_FLAG 0x8000 /* "virtual", need adjustments */
3092 static const size_t portcntr7220indices[] = {
3093 QIBPORTCNTR_PKTSEND | _PORT_VIRT_FLAG,
3094 cr_pktsendflow,
3095 QIBPORTCNTR_WORDSEND | _PORT_VIRT_FLAG,
3096 QIBPORTCNTR_PKTRCV | _PORT_VIRT_FLAG,
3097 cr_pktrcvflowctrl,
3098 QIBPORTCNTR_WORDRCV | _PORT_VIRT_FLAG,
3099 QIBPORTCNTR_SENDSTALL | _PORT_VIRT_FLAG,
3100 cr_txsdmadesc,
3101 cr_rxdlidfltr,
3102 cr_ibstatuschange,
3103 QIBPORTCNTR_IBLINKDOWN | _PORT_VIRT_FLAG,
3104 QIBPORTCNTR_IBLINKERRRECOV | _PORT_VIRT_FLAG,
3105 QIBPORTCNTR_ERRLINK | _PORT_VIRT_FLAG,
3106 QIBPORTCNTR_IBSYMBOLERR | _PORT_VIRT_FLAG,
3107 QIBPORTCNTR_LLI | _PORT_VIRT_FLAG,
3108 QIBPORTCNTR_BADFORMAT | _PORT_VIRT_FLAG,
3109 QIBPORTCNTR_ERR_RLEN | _PORT_VIRT_FLAG,
3110 QIBPORTCNTR_RCVOVFL | _PORT_VIRT_FLAG,
3111 QIBPORTCNTR_RCVEBP | _PORT_VIRT_FLAG,
3112 cr_rcvflowctrl_err,
3113 QIBPORTCNTR_ERRICRC | _PORT_VIRT_FLAG,
3114 QIBPORTCNTR_ERRLPCRC | _PORT_VIRT_FLAG,
3115 QIBPORTCNTR_ERRVCRC | _PORT_VIRT_FLAG,
3116 QIBPORTCNTR_INVALIDRLEN | _PORT_VIRT_FLAG,
3117 QIBPORTCNTR_ERRPKEY | _PORT_VIRT_FLAG,
3118 QIBPORTCNTR_RXDROPPKT | _PORT_VIRT_FLAG,
3119 cr_invalidslen,
3120 cr_senddropped,
3121 cr_errslen,
3122 cr_sendunderrun,
3123 cr_txunsupvl,
3124 QIBPORTCNTR_RXLOCALPHYERR | _PORT_VIRT_FLAG,
3125 QIBPORTCNTR_VL15PKTDROP | _PORT_VIRT_FLAG,
3126 QIBPORTCNTR_RXVLERR | _PORT_VIRT_FLAG,
3127 QIBPORTCNTR_EXCESSBUFOVFL | _PORT_VIRT_FLAG,
3128 };
3129
3130 /* do all the setup to make the counter reads efficient later */
3131 static void init_7220_cntrnames(struct qib_devdata *dd)
3132 {
3133 int i, j = 0;
3134 char *s;
3135
3136 for (i = 0, s = (char *)cntr7220names; s && j <= dd->cfgctxts;
3137 i++) {
3138 /* we always have at least one counter before the egrovfl */
3139 if (!j && !strncmp("Ctxt0EgrOvfl", s + 1, 12))
3140 j = 1;
3141 s = strchr(s + 1, '\n');
3142 if (s && j)
3143 j++;
3144 }
3145 dd->cspec->ncntrs = i;
3146 if (!s)
3147 /* full list; size is without terminating null */
3148 dd->cspec->cntrnamelen = sizeof(cntr7220names) - 1;
3149 else
3150 dd->cspec->cntrnamelen = 1 + s - cntr7220names;
3151 dd->cspec->cntrs = kmalloc(dd->cspec->ncntrs
3152 * sizeof(u64), GFP_KERNEL);
3153 if (!dd->cspec->cntrs)
3154 qib_dev_err(dd, "Failed allocation for counters\n");
3155
3156 for (i = 0, s = (char *)portcntr7220names; s; i++)
3157 s = strchr(s + 1, '\n');
3158 dd->cspec->nportcntrs = i - 1;
3159 dd->cspec->portcntrnamelen = sizeof(portcntr7220names) - 1;
3160 dd->cspec->portcntrs = kmalloc(dd->cspec->nportcntrs
3161 * sizeof(u64), GFP_KERNEL);
3162 if (!dd->cspec->portcntrs)
3163 qib_dev_err(dd, "Failed allocation for portcounters\n");
3164 }
3165
3166 static u32 qib_read_7220cntrs(struct qib_devdata *dd, loff_t pos, char **namep,
3167 u64 **cntrp)
3168 {
3169 u32 ret;
3170
3171 if (!dd->cspec->cntrs) {
3172 ret = 0;
3173 goto done;
3174 }
3175
3176 if (namep) {
3177 *namep = (char *)cntr7220names;
3178 ret = dd->cspec->cntrnamelen;
3179 if (pos >= ret)
3180 ret = 0; /* final read after getting everything */
3181 } else {
3182 u64 *cntr = dd->cspec->cntrs;
3183 int i;
3184
3185 ret = dd->cspec->ncntrs * sizeof(u64);
3186 if (!cntr || pos >= ret) {
3187 /* everything read, or couldn't get memory */
3188 ret = 0;
3189 goto done;
3190 }
3191
3192 *cntrp = cntr;
3193 for (i = 0; i < dd->cspec->ncntrs; i++)
3194 *cntr++ = read_7220_creg32(dd, cntr7220indices[i]);
3195 }
3196 done:
3197 return ret;
3198 }
3199
3200 static u32 qib_read_7220portcntrs(struct qib_devdata *dd, loff_t pos, u32 port,
3201 char **namep, u64 **cntrp)
3202 {
3203 u32 ret;
3204
3205 if (!dd->cspec->portcntrs) {
3206 ret = 0;
3207 goto done;
3208 }
3209 if (namep) {
3210 *namep = (char *)portcntr7220names;
3211 ret = dd->cspec->portcntrnamelen;
3212 if (pos >= ret)
3213 ret = 0; /* final read after getting everything */
3214 } else {
3215 u64 *cntr = dd->cspec->portcntrs;
3216 struct qib_pportdata *ppd = &dd->pport[port];
3217 int i;
3218
3219 ret = dd->cspec->nportcntrs * sizeof(u64);
3220 if (!cntr || pos >= ret) {
3221 /* everything read, or couldn't get memory */
3222 ret = 0;
3223 goto done;
3224 }
3225 *cntrp = cntr;
3226 for (i = 0; i < dd->cspec->nportcntrs; i++) {
3227 if (portcntr7220indices[i] & _PORT_VIRT_FLAG)
3228 *cntr++ = qib_portcntr_7220(ppd,
3229 portcntr7220indices[i] &
3230 ~_PORT_VIRT_FLAG);
3231 else
3232 *cntr++ = read_7220_creg32(dd,
3233 portcntr7220indices[i]);
3234 }
3235 }
3236 done:
3237 return ret;
3238 }
3239
3240 /**
3241 * qib_get_7220_faststats - get word counters from chip before they overflow
3242 * @opaque - contains a pointer to the qlogic_ib device qib_devdata
3243 *
3244 * This needs more work; in particular, decision on whether we really
3245 * need traffic_wds done the way it is
3246 * called from add_timer
3247 */
3248 static void qib_get_7220_faststats(unsigned long opaque)
3249 {
3250 struct qib_devdata *dd = (struct qib_devdata *) opaque;
3251 struct qib_pportdata *ppd = dd->pport;
3252 unsigned long flags;
3253 u64 traffic_wds;
3254
3255 /*
3256 * don't access the chip while running diags, or memory diags can
3257 * fail
3258 */
3259 if (!(dd->flags & QIB_INITTED) || dd->diag_client)
3260 /* but re-arm the timer, for diags case; won't hurt other */
3261 goto done;
3262
3263 /*
3264 * We now try to maintain an activity timer, based on traffic
3265 * exceeding a threshold, so we need to check the word-counts
3266 * even if they are 64-bit.
3267 */
3268 traffic_wds = qib_portcntr_7220(ppd, cr_wordsend) +
3269 qib_portcntr_7220(ppd, cr_wordrcv);
3270 spin_lock_irqsave(&dd->eep_st_lock, flags);
3271 traffic_wds -= dd->traffic_wds;
3272 dd->traffic_wds += traffic_wds;
3273 if (traffic_wds >= QIB_TRAFFIC_ACTIVE_THRESHOLD)
3274 atomic_add(5, &dd->active_time); /* S/B #define */
3275 spin_unlock_irqrestore(&dd->eep_st_lock, flags);
3276 done:
3277 mod_timer(&dd->stats_timer, jiffies + HZ * ACTIVITY_TIMER);
3278 }
3279
3280 /*
3281 * If we are using MSI, try to fallback to INTx.
3282 */
3283 static int qib_7220_intr_fallback(struct qib_devdata *dd)
3284 {
3285 if (!dd->msi_lo)
3286 return 0;
3287
3288 qib_devinfo(dd->pcidev, "MSI interrupt not detected,"
3289 " trying INTx interrupts\n");
3290 qib_7220_free_irq(dd);
3291 qib_enable_intx(dd->pcidev);
3292 /*
3293 * Some newer kernels require free_irq before disable_msi,
3294 * and irq can be changed during disable and INTx enable
3295 * and we need to therefore use the pcidev->irq value,
3296 * not our saved MSI value.
3297 */
3298 dd->cspec->irq = dd->pcidev->irq;
3299 qib_setup_7220_interrupt(dd);
3300 return 1;
3301 }
3302
3303 /*
3304 * Reset the XGXS (between serdes and IBC). Slightly less intrusive
3305 * than resetting the IBC or external link state, and useful in some
3306 * cases to cause some retraining. To do this right, we reset IBC
3307 * as well.
3308 */
3309 static void qib_7220_xgxs_reset(struct qib_pportdata *ppd)
3310 {
3311 u64 val, prev_val;
3312 struct qib_devdata *dd = ppd->dd;
3313
3314 prev_val = qib_read_kreg64(dd, kr_xgxs_cfg);
3315 val = prev_val | QLOGIC_IB_XGXS_RESET;
3316 prev_val &= ~QLOGIC_IB_XGXS_RESET; /* be sure */
3317 qib_write_kreg(dd, kr_control,
3318 dd->control & ~QLOGIC_IB_C_LINKENABLE);
3319 qib_write_kreg(dd, kr_xgxs_cfg, val);
3320 qib_read_kreg32(dd, kr_scratch);
3321 qib_write_kreg(dd, kr_xgxs_cfg, prev_val);
3322 qib_write_kreg(dd, kr_control, dd->control);
3323 }
3324
3325 /*
3326 * For this chip, we want to use the same buffer every time
3327 * when we are trying to bring the link up (they are always VL15
3328 * packets). At that link state the packet should always go out immediately
3329 * (or at least be discarded at the tx interface if the link is down).
3330 * If it doesn't, and the buffer isn't available, that means some other
3331 * sender has gotten ahead of us, and is preventing our packet from going
3332 * out. In that case, we flush all packets, and try again. If that still
3333 * fails, we fail the request, and hope things work the next time around.
3334 *
3335 * We don't need very complicated heuristics on whether the packet had
3336 * time to go out or not, since even at SDR 1X, it goes out in very short
3337 * time periods, covered by the chip reads done here and as part of the
3338 * flush.
3339 */
3340 static u32 __iomem *get_7220_link_buf(struct qib_pportdata *ppd, u32 *bnum)
3341 {
3342 u32 __iomem *buf;
3343 u32 lbuf = ppd->dd->cspec->lastbuf_for_pio;
3344 int do_cleanup;
3345 unsigned long flags;
3346
3347 /*
3348 * always blip to get avail list updated, since it's almost
3349 * always needed, and is fairly cheap.
3350 */
3351 sendctrl_7220_mod(ppd->dd->pport, QIB_SENDCTRL_AVAIL_BLIP);
3352 qib_read_kreg64(ppd->dd, kr_scratch); /* extra chip flush */
3353 buf = qib_getsendbuf_range(ppd->dd, bnum, lbuf, lbuf);
3354 if (buf)
3355 goto done;
3356
3357 spin_lock_irqsave(&ppd->sdma_lock, flags);
3358 if (ppd->sdma_state.current_state == qib_sdma_state_s20_idle &&
3359 ppd->sdma_state.current_state != qib_sdma_state_s00_hw_down) {
3360 __qib_sdma_process_event(ppd, qib_sdma_event_e00_go_hw_down);
3361 do_cleanup = 0;
3362 } else {
3363 do_cleanup = 1;
3364 qib_7220_sdma_hw_clean_up(ppd);
3365 }
3366 spin_unlock_irqrestore(&ppd->sdma_lock, flags);
3367
3368 if (do_cleanup) {
3369 qib_read_kreg64(ppd->dd, kr_scratch); /* extra chip flush */
3370 buf = qib_getsendbuf_range(ppd->dd, bnum, lbuf, lbuf);
3371 }
3372 done:
3373 return buf;
3374 }
3375
3376 /*
3377 * This code for non-IBTA-compliant IB speed negotiation is only known to
3378 * work for the SDR to DDR transition, and only between an HCA and a switch
3379 * with recent firmware. It is based on observed heuristics, rather than
3380 * actual knowledge of the non-compliant speed negotiation.
3381 * It has a number of hard-coded fields, since the hope is to rewrite this
3382 * when a spec is available on how the negoation is intended to work.
3383 */
3384 static void autoneg_7220_sendpkt(struct qib_pportdata *ppd, u32 *hdr,
3385 u32 dcnt, u32 *data)
3386 {
3387 int i;
3388 u64 pbc;
3389 u32 __iomem *piobuf;
3390 u32 pnum;
3391 struct qib_devdata *dd = ppd->dd;
3392
3393 i = 0;
3394 pbc = 7 + dcnt + 1; /* 7 dword header, dword data, icrc */
3395 pbc |= PBC_7220_VL15_SEND;
3396 while (!(piobuf = get_7220_link_buf(ppd, &pnum))) {
3397 if (i++ > 5)
3398 return;
3399 udelay(2);
3400 }
3401 sendctrl_7220_mod(dd->pport, QIB_SENDCTRL_DISARM_BUF(pnum));
3402 writeq(pbc, piobuf);
3403 qib_flush_wc();
3404 qib_pio_copy(piobuf + 2, hdr, 7);
3405 qib_pio_copy(piobuf + 9, data, dcnt);
3406 if (dd->flags & QIB_USE_SPCL_TRIG) {
3407 u32 spcl_off = (pnum >= dd->piobcnt2k) ? 2047 : 1023;
3408
3409 qib_flush_wc();
3410 __raw_writel(0xaebecede, piobuf + spcl_off);
3411 }
3412 qib_flush_wc();
3413 qib_sendbuf_done(dd, pnum);
3414 }
3415
3416 /*
3417 * _start packet gets sent twice at start, _done gets sent twice at end
3418 */
3419 static void autoneg_7220_send(struct qib_pportdata *ppd, int which)
3420 {
3421 struct qib_devdata *dd = ppd->dd;
3422 static u32 swapped;
3423 u32 dw, i, hcnt, dcnt, *data;
3424 static u32 hdr[7] = { 0xf002ffff, 0x48ffff, 0x6400abba };
3425 static u32 madpayload_start[0x40] = {
3426 0x1810103, 0x1, 0x0, 0x0, 0x2c90000, 0x2c9, 0x0, 0x0,
3427 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
3428 0x1, 0x1388, 0x15e, 0x1, /* rest 0's */
3429 };
3430 static u32 madpayload_done[0x40] = {
3431 0x1810103, 0x1, 0x0, 0x0, 0x2c90000, 0x2c9, 0x0, 0x0,
3432 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
3433 0x40000001, 0x1388, 0x15e, /* rest 0's */
3434 };
3435
3436 dcnt = ARRAY_SIZE(madpayload_start);
3437 hcnt = ARRAY_SIZE(hdr);
3438 if (!swapped) {
3439 /* for maintainability, do it at runtime */
3440 for (i = 0; i < hcnt; i++) {
3441 dw = (__force u32) cpu_to_be32(hdr[i]);
3442 hdr[i] = dw;
3443 }
3444 for (i = 0; i < dcnt; i++) {
3445 dw = (__force u32) cpu_to_be32(madpayload_start[i]);
3446 madpayload_start[i] = dw;
3447 dw = (__force u32) cpu_to_be32(madpayload_done[i]);
3448 madpayload_done[i] = dw;
3449 }
3450 swapped = 1;
3451 }
3452
3453 data = which ? madpayload_done : madpayload_start;
3454
3455 autoneg_7220_sendpkt(ppd, hdr, dcnt, data);
3456 qib_read_kreg64(dd, kr_scratch);
3457 udelay(2);
3458 autoneg_7220_sendpkt(ppd, hdr, dcnt, data);
3459 qib_read_kreg64(dd, kr_scratch);
3460 udelay(2);
3461 }
3462
3463 /*
3464 * Do the absolute minimum to cause an IB speed change, and make it
3465 * ready, but don't actually trigger the change. The caller will
3466 * do that when ready (if link is in Polling training state, it will
3467 * happen immediately, otherwise when link next goes down)
3468 *
3469 * This routine should only be used as part of the DDR autonegotation
3470 * code for devices that are not compliant with IB 1.2 (or code that
3471 * fixes things up for same).
3472 *
3473 * When link has gone down, and autoneg enabled, or autoneg has
3474 * failed and we give up until next time we set both speeds, and
3475 * then we want IBTA enabled as well as "use max enabled speed.
3476 */
3477 static void set_7220_ibspeed_fast(struct qib_pportdata *ppd, u32 speed)
3478 {
3479 ppd->cpspec->ibcddrctrl &= ~(IBA7220_IBC_SPEED_AUTONEG_MASK |
3480 IBA7220_IBC_IBTA_1_2_MASK);
3481
3482 if (speed == (QIB_IB_SDR | QIB_IB_DDR))
3483 ppd->cpspec->ibcddrctrl |= IBA7220_IBC_SPEED_AUTONEG_MASK |
3484 IBA7220_IBC_IBTA_1_2_MASK;
3485 else
3486 ppd->cpspec->ibcddrctrl |= speed == QIB_IB_DDR ?
3487 IBA7220_IBC_SPEED_DDR : IBA7220_IBC_SPEED_SDR;
3488
3489 qib_write_kreg(ppd->dd, kr_ibcddrctrl, ppd->cpspec->ibcddrctrl);
3490 qib_write_kreg(ppd->dd, kr_scratch, 0);
3491 }
3492
3493 /*
3494 * This routine is only used when we are not talking to another
3495 * IB 1.2-compliant device that we think can do DDR.
3496 * (This includes all existing switch chips as of Oct 2007.)
3497 * 1.2-compliant devices go directly to DDR prior to reaching INIT
3498 */
3499 static void try_7220_autoneg(struct qib_pportdata *ppd)
3500 {
3501 unsigned long flags;
3502
3503 /*
3504 * Required for older non-IB1.2 DDR switches. Newer
3505 * non-IB-compliant switches don't need it, but so far,
3506 * aren't bothered by it either. "Magic constant"
3507 */
3508 qib_write_kreg(ppd->dd, kr_ncmodectrl, 0x3b9dc07);
3509
3510 spin_lock_irqsave(&ppd->lflags_lock, flags);
3511 ppd->lflags |= QIBL_IB_AUTONEG_INPROG;
3512 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
3513 autoneg_7220_send(ppd, 0);
3514 set_7220_ibspeed_fast(ppd, QIB_IB_DDR);
3515
3516 toggle_7220_rclkrls(ppd->dd);
3517 /* 2 msec is minimum length of a poll cycle */
3518 schedule_delayed_work(&ppd->cpspec->autoneg_work,
3519 msecs_to_jiffies(2));
3520 }
3521
3522 /*
3523 * Handle the empirically determined mechanism for auto-negotiation
3524 * of DDR speed with switches.
3525 */
3526 static void autoneg_7220_work(struct work_struct *work)
3527 {
3528 struct qib_pportdata *ppd;
3529 struct qib_devdata *dd;
3530 u64 startms;
3531 u32 i;
3532 unsigned long flags;
3533
3534 ppd = &container_of(work, struct qib_chippport_specific,
3535 autoneg_work.work)->pportdata;
3536 dd = ppd->dd;
3537
3538 startms = jiffies_to_msecs(jiffies);
3539
3540 /*
3541 * Busy wait for this first part, it should be at most a
3542 * few hundred usec, since we scheduled ourselves for 2msec.
3543 */
3544 for (i = 0; i < 25; i++) {
3545 if (SYM_FIELD(ppd->lastibcstat, IBCStatus, LinkTrainingState)
3546 == IB_7220_LT_STATE_POLLQUIET) {
3547 qib_set_linkstate(ppd, QIB_IB_LINKDOWN_DISABLE);
3548 break;
3549 }
3550 udelay(100);
3551 }
3552
3553 if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG))
3554 goto done; /* we got there early or told to stop */
3555
3556 /* we expect this to timeout */
3557 if (wait_event_timeout(ppd->cpspec->autoneg_wait,
3558 !(ppd->lflags & QIBL_IB_AUTONEG_INPROG),
3559 msecs_to_jiffies(90)))
3560 goto done;
3561
3562 toggle_7220_rclkrls(dd);
3563
3564 /* we expect this to timeout */
3565 if (wait_event_timeout(ppd->cpspec->autoneg_wait,
3566 !(ppd->lflags & QIBL_IB_AUTONEG_INPROG),
3567 msecs_to_jiffies(1700)))
3568 goto done;
3569
3570 set_7220_ibspeed_fast(ppd, QIB_IB_SDR);
3571 toggle_7220_rclkrls(dd);
3572
3573 /*
3574 * Wait up to 250 msec for link to train and get to INIT at DDR;
3575 * this should terminate early.
3576 */
3577 wait_event_timeout(ppd->cpspec->autoneg_wait,
3578 !(ppd->lflags & QIBL_IB_AUTONEG_INPROG),
3579 msecs_to_jiffies(250));
3580 done:
3581 if (ppd->lflags & QIBL_IB_AUTONEG_INPROG) {
3582 spin_lock_irqsave(&ppd->lflags_lock, flags);
3583 ppd->lflags &= ~QIBL_IB_AUTONEG_INPROG;
3584 if (dd->cspec->autoneg_tries == AUTONEG_TRIES) {
3585 ppd->lflags |= QIBL_IB_AUTONEG_FAILED;
3586 dd->cspec->autoneg_tries = 0;
3587 }
3588 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
3589 set_7220_ibspeed_fast(ppd, ppd->link_speed_enabled);
3590 }
3591 }
3592
3593 static u32 qib_7220_iblink_state(u64 ibcs)
3594 {
3595 u32 state = (u32)SYM_FIELD(ibcs, IBCStatus, LinkState);
3596
3597 switch (state) {
3598 case IB_7220_L_STATE_INIT:
3599 state = IB_PORT_INIT;
3600 break;
3601 case IB_7220_L_STATE_ARM:
3602 state = IB_PORT_ARMED;
3603 break;
3604 case IB_7220_L_STATE_ACTIVE:
3605 /* fall through */
3606 case IB_7220_L_STATE_ACT_DEFER:
3607 state = IB_PORT_ACTIVE;
3608 break;
3609 default: /* fall through */
3610 case IB_7220_L_STATE_DOWN:
3611 state = IB_PORT_DOWN;
3612 break;
3613 }
3614 return state;
3615 }
3616
3617 /* returns the IBTA port state, rather than the IBC link training state */
3618 static u8 qib_7220_phys_portstate(u64 ibcs)
3619 {
3620 u8 state = (u8)SYM_FIELD(ibcs, IBCStatus, LinkTrainingState);
3621 return qib_7220_physportstate[state];
3622 }
3623
3624 static int qib_7220_ib_updown(struct qib_pportdata *ppd, int ibup, u64 ibcs)
3625 {
3626 int ret = 0, symadj = 0;
3627 struct qib_devdata *dd = ppd->dd;
3628 unsigned long flags;
3629
3630 spin_lock_irqsave(&ppd->lflags_lock, flags);
3631 ppd->lflags &= ~QIBL_IB_FORCE_NOTIFY;
3632 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
3633
3634 if (!ibup) {
3635 /*
3636 * When the link goes down we don't want AEQ running, so it
3637 * won't interfere with IBC training, etc., and we need
3638 * to go back to the static SerDes preset values.
3639 */
3640 if (!(ppd->lflags & (QIBL_IB_AUTONEG_FAILED |
3641 QIBL_IB_AUTONEG_INPROG)))
3642 set_7220_ibspeed_fast(ppd, ppd->link_speed_enabled);
3643 if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) {
3644 qib_sd7220_presets(dd);
3645 qib_cancel_sends(ppd); /* initial disarm, etc. */
3646 spin_lock_irqsave(&ppd->sdma_lock, flags);
3647 if (__qib_sdma_running(ppd))
3648 __qib_sdma_process_event(ppd,
3649 qib_sdma_event_e70_go_idle);
3650 spin_unlock_irqrestore(&ppd->sdma_lock, flags);
3651 }
3652 /* this might better in qib_sd7220_presets() */
3653 set_7220_relock_poll(dd, ibup);
3654 } else {
3655 if (qib_compat_ddr_negotiate &&
3656 !(ppd->lflags & (QIBL_IB_AUTONEG_FAILED |
3657 QIBL_IB_AUTONEG_INPROG)) &&
3658 ppd->link_speed_active == QIB_IB_SDR &&
3659 (ppd->link_speed_enabled & (QIB_IB_DDR | QIB_IB_SDR)) ==
3660 (QIB_IB_DDR | QIB_IB_SDR) &&
3661 dd->cspec->autoneg_tries < AUTONEG_TRIES) {
3662 /* we are SDR, and DDR auto-negotiation enabled */
3663 ++dd->cspec->autoneg_tries;
3664 if (!ppd->cpspec->ibdeltainprog) {
3665 ppd->cpspec->ibdeltainprog = 1;
3666 ppd->cpspec->ibsymsnap = read_7220_creg32(dd,
3667 cr_ibsymbolerr);
3668 ppd->cpspec->iblnkerrsnap = read_7220_creg32(dd,
3669 cr_iblinkerrrecov);
3670 }
3671 try_7220_autoneg(ppd);
3672 ret = 1; /* no other IB status change processing */
3673 } else if ((ppd->lflags & QIBL_IB_AUTONEG_INPROG) &&
3674 ppd->link_speed_active == QIB_IB_SDR) {
3675 autoneg_7220_send(ppd, 1);
3676 set_7220_ibspeed_fast(ppd, QIB_IB_DDR);
3677 udelay(2);
3678 toggle_7220_rclkrls(dd);
3679 ret = 1; /* no other IB status change processing */
3680 } else {
3681 if ((ppd->lflags & QIBL_IB_AUTONEG_INPROG) &&
3682 (ppd->link_speed_active & QIB_IB_DDR)) {
3683 spin_lock_irqsave(&ppd->lflags_lock, flags);
3684 ppd->lflags &= ~(QIBL_IB_AUTONEG_INPROG |
3685 QIBL_IB_AUTONEG_FAILED);
3686 spin_unlock_irqrestore(&ppd->lflags_lock,
3687 flags);
3688 dd->cspec->autoneg_tries = 0;
3689 /* re-enable SDR, for next link down */
3690 set_7220_ibspeed_fast(ppd,
3691 ppd->link_speed_enabled);
3692 wake_up(&ppd->cpspec->autoneg_wait);
3693 symadj = 1;
3694 } else if (ppd->lflags & QIBL_IB_AUTONEG_FAILED) {
3695 /*
3696 * Clear autoneg failure flag, and do setup
3697 * so we'll try next time link goes down and
3698 * back to INIT (possibly connected to a
3699 * different device).
3700 */
3701 spin_lock_irqsave(&ppd->lflags_lock, flags);
3702 ppd->lflags &= ~QIBL_IB_AUTONEG_FAILED;
3703 spin_unlock_irqrestore(&ppd->lflags_lock,
3704 flags);
3705 ppd->cpspec->ibcddrctrl |=
3706 IBA7220_IBC_IBTA_1_2_MASK;
3707 qib_write_kreg(dd, kr_ncmodectrl, 0);
3708 symadj = 1;
3709 }
3710 }
3711
3712 if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG))
3713 symadj = 1;
3714
3715 if (!ret) {
3716 ppd->delay_mult = rate_to_delay
3717 [(ibcs >> IBA7220_LINKSPEED_SHIFT) & 1]
3718 [(ibcs >> IBA7220_LINKWIDTH_SHIFT) & 1];
3719
3720 set_7220_relock_poll(dd, ibup);
3721 spin_lock_irqsave(&ppd->sdma_lock, flags);
3722 /*
3723 * Unlike 7322, the 7220 needs this, due to lack of
3724 * interrupt in some cases when we have sdma active
3725 * when the link goes down.
3726 */
3727 if (ppd->sdma_state.current_state !=
3728 qib_sdma_state_s20_idle)
3729 __qib_sdma_process_event(ppd,
3730 qib_sdma_event_e00_go_hw_down);
3731 spin_unlock_irqrestore(&ppd->sdma_lock, flags);
3732 }
3733 }
3734
3735 if (symadj) {
3736 if (ppd->cpspec->ibdeltainprog) {
3737 ppd->cpspec->ibdeltainprog = 0;
3738 ppd->cpspec->ibsymdelta += read_7220_creg32(ppd->dd,
3739 cr_ibsymbolerr) - ppd->cpspec->ibsymsnap;
3740 ppd->cpspec->iblnkerrdelta += read_7220_creg32(ppd->dd,
3741 cr_iblinkerrrecov) - ppd->cpspec->iblnkerrsnap;
3742 }
3743 } else if (!ibup && qib_compat_ddr_negotiate &&
3744 !ppd->cpspec->ibdeltainprog &&
3745 !(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) {
3746 ppd->cpspec->ibdeltainprog = 1;
3747 ppd->cpspec->ibsymsnap = read_7220_creg32(ppd->dd,
3748 cr_ibsymbolerr);
3749 ppd->cpspec->iblnkerrsnap = read_7220_creg32(ppd->dd,
3750 cr_iblinkerrrecov);
3751 }
3752
3753 if (!ret)
3754 qib_setup_7220_setextled(ppd, ibup);
3755 return ret;
3756 }
3757
3758 /*
3759 * Does read/modify/write to appropriate registers to
3760 * set output and direction bits selected by mask.
3761 * these are in their canonical postions (e.g. lsb of
3762 * dir will end up in D48 of extctrl on existing chips).
3763 * returns contents of GP Inputs.
3764 */
3765 static int gpio_7220_mod(struct qib_devdata *dd, u32 out, u32 dir, u32 mask)
3766 {
3767 u64 read_val, new_out;
3768 unsigned long flags;
3769
3770 if (mask) {
3771 /* some bits being written, lock access to GPIO */
3772 dir &= mask;
3773 out &= mask;
3774 spin_lock_irqsave(&dd->cspec->gpio_lock, flags);
3775 dd->cspec->extctrl &= ~((u64)mask << SYM_LSB(EXTCtrl, GPIOOe));
3776 dd->cspec->extctrl |= ((u64) dir << SYM_LSB(EXTCtrl, GPIOOe));
3777 new_out = (dd->cspec->gpio_out & ~mask) | out;
3778
3779 qib_write_kreg(dd, kr_extctrl, dd->cspec->extctrl);
3780 qib_write_kreg(dd, kr_gpio_out, new_out);
3781 dd->cspec->gpio_out = new_out;
3782 spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags);
3783 }
3784 /*
3785 * It is unlikely that a read at this time would get valid
3786 * data on a pin whose direction line was set in the same
3787 * call to this function. We include the read here because
3788 * that allows us to potentially combine a change on one pin with
3789 * a read on another, and because the old code did something like
3790 * this.
3791 */
3792 read_val = qib_read_kreg64(dd, kr_extstatus);
3793 return SYM_FIELD(read_val, EXTStatus, GPIOIn);
3794 }
3795
3796 /*
3797 * Read fundamental info we need to use the chip. These are
3798 * the registers that describe chip capabilities, and are
3799 * saved in shadow registers.
3800 */
3801 static void get_7220_chip_params(struct qib_devdata *dd)
3802 {
3803 u64 val;
3804 u32 piobufs;
3805 int mtu;
3806
3807 dd->uregbase = qib_read_kreg32(dd, kr_userregbase);
3808
3809 dd->rcvtidcnt = qib_read_kreg32(dd, kr_rcvtidcnt);
3810 dd->rcvtidbase = qib_read_kreg32(dd, kr_rcvtidbase);
3811 dd->rcvegrbase = qib_read_kreg32(dd, kr_rcvegrbase);
3812 dd->palign = qib_read_kreg32(dd, kr_palign);
3813 dd->piobufbase = qib_read_kreg64(dd, kr_sendpiobufbase);
3814 dd->pio2k_bufbase = dd->piobufbase & 0xffffffff;
3815
3816 val = qib_read_kreg64(dd, kr_sendpiosize);
3817 dd->piosize2k = val & ~0U;
3818 dd->piosize4k = val >> 32;
3819
3820 mtu = ib_mtu_enum_to_int(qib_ibmtu);
3821 if (mtu == -1)
3822 mtu = QIB_DEFAULT_MTU;
3823 dd->pport->ibmtu = (u32)mtu;
3824
3825 val = qib_read_kreg64(dd, kr_sendpiobufcnt);
3826 dd->piobcnt2k = val & ~0U;
3827 dd->piobcnt4k = val >> 32;
3828 /* these may be adjusted in init_chip_wc_pat() */
3829 dd->pio2kbase = (u32 __iomem *)
3830 ((char __iomem *) dd->kregbase + dd->pio2k_bufbase);
3831 if (dd->piobcnt4k) {
3832 dd->pio4kbase = (u32 __iomem *)
3833 ((char __iomem *) dd->kregbase +
3834 (dd->piobufbase >> 32));
3835 /*
3836 * 4K buffers take 2 pages; we use roundup just to be
3837 * paranoid; we calculate it once here, rather than on
3838 * ever buf allocate
3839 */
3840 dd->align4k = ALIGN(dd->piosize4k, dd->palign);
3841 }
3842
3843 piobufs = dd->piobcnt4k + dd->piobcnt2k;
3844
3845 dd->pioavregs = ALIGN(piobufs, sizeof(u64) * BITS_PER_BYTE / 2) /
3846 (sizeof(u64) * BITS_PER_BYTE / 2);
3847 }
3848
3849 /*
3850 * The chip base addresses in cspec and cpspec have to be set
3851 * after possible init_chip_wc_pat(), rather than in
3852 * qib_get_7220_chip_params(), so split out as separate function
3853 */
3854 static void set_7220_baseaddrs(struct qib_devdata *dd)
3855 {
3856 u32 cregbase;
3857 /* init after possible re-map in init_chip_wc_pat() */
3858 cregbase = qib_read_kreg32(dd, kr_counterregbase);
3859 dd->cspec->cregbase = (u64 __iomem *)
3860 ((char __iomem *) dd->kregbase + cregbase);
3861
3862 dd->egrtidbase = (u64 __iomem *)
3863 ((char __iomem *) dd->kregbase + dd->rcvegrbase);
3864 }
3865
3866
3867 #define SENDCTRL_SHADOWED (SYM_MASK(SendCtrl, SendIntBufAvail) | \
3868 SYM_MASK(SendCtrl, SPioEnable) | \
3869 SYM_MASK(SendCtrl, SSpecialTriggerEn) | \
3870 SYM_MASK(SendCtrl, SendBufAvailUpd) | \
3871 SYM_MASK(SendCtrl, AvailUpdThld) | \
3872 SYM_MASK(SendCtrl, SDmaEnable) | \
3873 SYM_MASK(SendCtrl, SDmaIntEnable) | \
3874 SYM_MASK(SendCtrl, SDmaHalt) | \
3875 SYM_MASK(SendCtrl, SDmaSingleDescriptor))
3876
3877 static int sendctrl_hook(struct qib_devdata *dd,
3878 const struct diag_observer *op,
3879 u32 offs, u64 *data, u64 mask, int only_32)
3880 {
3881 unsigned long flags;
3882 unsigned idx = offs / sizeof(u64);
3883 u64 local_data, all_bits;
3884
3885 if (idx != kr_sendctrl) {
3886 qib_dev_err(dd, "SendCtrl Hook called with offs %X, %s-bit\n",
3887 offs, only_32 ? "32" : "64");
3888 return 0;
3889 }
3890
3891 all_bits = ~0ULL;
3892 if (only_32)
3893 all_bits >>= 32;
3894 spin_lock_irqsave(&dd->sendctrl_lock, flags);
3895 if ((mask & all_bits) != all_bits) {
3896 /*
3897 * At least some mask bits are zero, so we need
3898 * to read. The judgement call is whether from
3899 * reg or shadow. First-cut: read reg, and complain
3900 * if any bits which should be shadowed are different
3901 * from their shadowed value.
3902 */
3903 if (only_32)
3904 local_data = (u64)qib_read_kreg32(dd, idx);
3905 else
3906 local_data = qib_read_kreg64(dd, idx);
3907 qib_dev_err(dd, "Sendctrl -> %X, Shad -> %X\n",
3908 (u32)local_data, (u32)dd->sendctrl);
3909 if ((local_data & SENDCTRL_SHADOWED) !=
3910 (dd->sendctrl & SENDCTRL_SHADOWED))
3911 qib_dev_err(dd, "Sendctrl read: %X shadow is %X\n",
3912 (u32)local_data, (u32) dd->sendctrl);
3913 *data = (local_data & ~mask) | (*data & mask);
3914 }
3915 if (mask) {
3916 /*
3917 * At least some mask bits are one, so we need
3918 * to write, but only shadow some bits.
3919 */
3920 u64 sval, tval; /* Shadowed, transient */
3921
3922 /*
3923 * New shadow val is bits we don't want to touch,
3924 * ORed with bits we do, that are intended for shadow.
3925 */
3926 sval = (dd->sendctrl & ~mask);
3927 sval |= *data & SENDCTRL_SHADOWED & mask;
3928 dd->sendctrl = sval;
3929 tval = sval | (*data & ~SENDCTRL_SHADOWED & mask);
3930 qib_dev_err(dd, "Sendctrl <- %X, Shad <- %X\n",
3931 (u32)tval, (u32)sval);
3932 qib_write_kreg(dd, kr_sendctrl, tval);
3933 qib_write_kreg(dd, kr_scratch, 0Ull);
3934 }
3935 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
3936
3937 return only_32 ? 4 : 8;
3938 }
3939
3940 static const struct diag_observer sendctrl_observer = {
3941 sendctrl_hook, kr_sendctrl * sizeof(u64),
3942 kr_sendctrl * sizeof(u64)
3943 };
3944
3945 /*
3946 * write the final few registers that depend on some of the
3947 * init setup. Done late in init, just before bringing up
3948 * the serdes.
3949 */
3950 static int qib_late_7220_initreg(struct qib_devdata *dd)
3951 {
3952 int ret = 0;
3953 u64 val;
3954
3955 qib_write_kreg(dd, kr_rcvhdrentsize, dd->rcvhdrentsize);
3956 qib_write_kreg(dd, kr_rcvhdrsize, dd->rcvhdrsize);
3957 qib_write_kreg(dd, kr_rcvhdrcnt, dd->rcvhdrcnt);
3958 qib_write_kreg(dd, kr_sendpioavailaddr, dd->pioavailregs_phys);
3959 val = qib_read_kreg64(dd, kr_sendpioavailaddr);
3960 if (val != dd->pioavailregs_phys) {
3961 qib_dev_err(dd, "Catastrophic software error, "
3962 "SendPIOAvailAddr written as %lx, "
3963 "read back as %llx\n",
3964 (unsigned long) dd->pioavailregs_phys,
3965 (unsigned long long) val);
3966 ret = -EINVAL;
3967 }
3968 qib_register_observer(dd, &sendctrl_observer);
3969 return ret;
3970 }
3971
3972 static int qib_init_7220_variables(struct qib_devdata *dd)
3973 {
3974 struct qib_chippport_specific *cpspec;
3975 struct qib_pportdata *ppd;
3976 int ret = 0;
3977 u32 sbufs, updthresh;
3978
3979 cpspec = (struct qib_chippport_specific *)(dd + 1);
3980 ppd = &cpspec->pportdata;
3981 dd->pport = ppd;
3982 dd->num_pports = 1;
3983
3984 dd->cspec = (struct qib_chip_specific *)(cpspec + dd->num_pports);
3985 ppd->cpspec = cpspec;
3986
3987 spin_lock_init(&dd->cspec->sdepb_lock);
3988 spin_lock_init(&dd->cspec->rcvmod_lock);
3989 spin_lock_init(&dd->cspec->gpio_lock);
3990
3991 /* we haven't yet set QIB_PRESENT, so use read directly */
3992 dd->revision = readq(&dd->kregbase[kr_revision]);
3993
3994 if ((dd->revision & 0xffffffffU) == 0xffffffffU) {
3995 qib_dev_err(dd, "Revision register read failure, "
3996 "giving up initialization\n");
3997 ret = -ENODEV;
3998 goto bail;
3999 }
4000 dd->flags |= QIB_PRESENT; /* now register routines work */
4001
4002 dd->majrev = (u8) SYM_FIELD(dd->revision, Revision_R,
4003 ChipRevMajor);
4004 dd->minrev = (u8) SYM_FIELD(dd->revision, Revision_R,
4005 ChipRevMinor);
4006
4007 get_7220_chip_params(dd);
4008 qib_7220_boardname(dd);
4009
4010 /*
4011 * GPIO bits for TWSI data and clock,
4012 * used for serial EEPROM.
4013 */
4014 dd->gpio_sda_num = _QIB_GPIO_SDA_NUM;
4015 dd->gpio_scl_num = _QIB_GPIO_SCL_NUM;
4016 dd->twsi_eeprom_dev = QIB_TWSI_EEPROM_DEV;
4017
4018 dd->flags |= QIB_HAS_INTX | QIB_HAS_LINK_LATENCY |
4019 QIB_NODMA_RTAIL | QIB_HAS_THRESH_UPDATE;
4020 dd->flags |= qib_special_trigger ?
4021 QIB_USE_SPCL_TRIG : QIB_HAS_SEND_DMA;
4022
4023 /*
4024 * EEPROM error log 0 is TXE Parity errors. 1 is RXE Parity.
4025 * 2 is Some Misc, 3 is reserved for future.
4026 */
4027 dd->eep_st_masks[0].hwerrs_to_log = HWE_MASK(TXEMemParityErr);
4028
4029 dd->eep_st_masks[1].hwerrs_to_log = HWE_MASK(RXEMemParityErr);
4030
4031 dd->eep_st_masks[2].errs_to_log = ERR_MASK(ResetNegated);
4032
4033 init_waitqueue_head(&cpspec->autoneg_wait);
4034 INIT_DELAYED_WORK(&cpspec->autoneg_work, autoneg_7220_work);
4035
4036 qib_init_pportdata(ppd, dd, 0, 1);
4037 ppd->link_width_supported = IB_WIDTH_1X | IB_WIDTH_4X;
4038 ppd->link_speed_supported = QIB_IB_SDR | QIB_IB_DDR;
4039
4040 ppd->link_width_enabled = ppd->link_width_supported;
4041 ppd->link_speed_enabled = ppd->link_speed_supported;
4042 /*
4043 * Set the initial values to reasonable default, will be set
4044 * for real when link is up.
4045 */
4046 ppd->link_width_active = IB_WIDTH_4X;
4047 ppd->link_speed_active = QIB_IB_SDR;
4048 ppd->delay_mult = rate_to_delay[0][1];
4049 ppd->vls_supported = IB_VL_VL0;
4050 ppd->vls_operational = ppd->vls_supported;
4051
4052 if (!qib_mini_init)
4053 qib_write_kreg(dd, kr_rcvbthqp, QIB_KD_QP);
4054
4055 init_timer(&ppd->cpspec->chase_timer);
4056 ppd->cpspec->chase_timer.function = reenable_7220_chase;
4057 ppd->cpspec->chase_timer.data = (unsigned long)ppd;
4058
4059 qib_num_cfg_vls = 1; /* if any 7220's, only one VL */
4060
4061 dd->rcvhdrentsize = QIB_RCVHDR_ENTSIZE;
4062 dd->rcvhdrsize = QIB_DFLT_RCVHDRSIZE;
4063 dd->rhf_offset =
4064 dd->rcvhdrentsize - sizeof(u64) / sizeof(u32);
4065
4066 /* we always allocate at least 2048 bytes for eager buffers */
4067 ret = ib_mtu_enum_to_int(qib_ibmtu);
4068 dd->rcvegrbufsize = ret != -1 ? max(ret, 2048) : QIB_DEFAULT_MTU;
4069
4070 qib_7220_tidtemplate(dd);
4071
4072 /*
4073 * We can request a receive interrupt for 1 or
4074 * more packets from current offset. For now, we set this
4075 * up for a single packet.
4076 */
4077 dd->rhdrhead_intr_off = 1ULL << 32;
4078
4079 /* setup the stats timer; the add_timer is done at end of init */
4080 init_timer(&dd->stats_timer);
4081 dd->stats_timer.function = qib_get_7220_faststats;
4082 dd->stats_timer.data = (unsigned long) dd;
4083 dd->stats_timer.expires = jiffies + ACTIVITY_TIMER * HZ;
4084
4085 /*
4086 * Control[4] has been added to change the arbitration within
4087 * the SDMA engine between favoring data fetches over descriptor
4088 * fetches. qib_sdma_fetch_arb==0 gives data fetches priority.
4089 */
4090 if (qib_sdma_fetch_arb)
4091 dd->control |= 1 << 4;
4092
4093 dd->ureg_align = 0x10000; /* 64KB alignment */
4094
4095 dd->piosize2kmax_dwords = (dd->piosize2k >> 2)-1;
4096 qib_7220_config_ctxts(dd);
4097 qib_set_ctxtcnt(dd); /* needed for PAT setup */
4098
4099 if (qib_wc_pat) {
4100 ret = init_chip_wc_pat(dd, 0);
4101 if (ret)
4102 goto bail;
4103 }
4104 set_7220_baseaddrs(dd); /* set chip access pointers now */
4105
4106 ret = 0;
4107 if (qib_mini_init)
4108 goto bail;
4109
4110 ret = qib_create_ctxts(dd);
4111 init_7220_cntrnames(dd);
4112
4113 /* use all of 4KB buffers for the kernel SDMA, zero if !SDMA.
4114 * reserve the update threshold amount for other kernel use, such
4115 * as sending SMI, MAD, and ACKs, or 3, whichever is greater,
4116 * unless we aren't enabling SDMA, in which case we want to use
4117 * all the 4k bufs for the kernel.
4118 * if this was less than the update threshold, we could wait
4119 * a long time for an update. Coded this way because we
4120 * sometimes change the update threshold for various reasons,
4121 * and we want this to remain robust.
4122 */
4123 updthresh = 8U; /* update threshold */
4124 if (dd->flags & QIB_HAS_SEND_DMA) {
4125 dd->cspec->sdmabufcnt = dd->piobcnt4k;
4126 sbufs = updthresh > 3 ? updthresh : 3;
4127 } else {
4128 dd->cspec->sdmabufcnt = 0;
4129 sbufs = dd->piobcnt4k;
4130 }
4131
4132 dd->cspec->lastbuf_for_pio = dd->piobcnt2k + dd->piobcnt4k -
4133 dd->cspec->sdmabufcnt;
4134 dd->lastctxt_piobuf = dd->cspec->lastbuf_for_pio - sbufs;
4135 dd->cspec->lastbuf_for_pio--; /* range is <= , not < */
4136 dd->pbufsctxt = dd->lastctxt_piobuf /
4137 (dd->cfgctxts - dd->first_user_ctxt);
4138
4139 /*
4140 * if we are at 16 user contexts, we will have one 7 sbufs
4141 * per context, so drop the update threshold to match. We
4142 * want to update before we actually run out, at low pbufs/ctxt
4143 * so give ourselves some margin
4144 */
4145 if ((dd->pbufsctxt - 2) < updthresh)
4146 updthresh = dd->pbufsctxt - 2;
4147
4148 dd->cspec->updthresh_dflt = updthresh;
4149 dd->cspec->updthresh = updthresh;
4150
4151 /* before full enable, no interrupts, no locking needed */
4152 dd->sendctrl |= (updthresh & SYM_RMASK(SendCtrl, AvailUpdThld))
4153 << SYM_LSB(SendCtrl, AvailUpdThld);
4154
4155 dd->psxmitwait_supported = 1;
4156 dd->psxmitwait_check_rate = QIB_7220_PSXMITWAIT_CHECK_RATE;
4157 bail:
4158 return ret;
4159 }
4160
4161 static u32 __iomem *qib_7220_getsendbuf(struct qib_pportdata *ppd, u64 pbc,
4162 u32 *pbufnum)
4163 {
4164 u32 first, last, plen = pbc & QIB_PBC_LENGTH_MASK;
4165 struct qib_devdata *dd = ppd->dd;
4166 u32 __iomem *buf;
4167
4168 if (((pbc >> 32) & PBC_7220_VL15_SEND_CTRL) &&
4169 !(ppd->lflags & (QIBL_IB_AUTONEG_INPROG | QIBL_LINKACTIVE)))
4170 buf = get_7220_link_buf(ppd, pbufnum);
4171 else {
4172 if ((plen + 1) > dd->piosize2kmax_dwords)
4173 first = dd->piobcnt2k;
4174 else
4175 first = 0;
4176 /* try 4k if all 2k busy, so same last for both sizes */
4177 last = dd->cspec->lastbuf_for_pio;
4178 buf = qib_getsendbuf_range(dd, pbufnum, first, last);
4179 }
4180 return buf;
4181 }
4182
4183 /* these 2 "counters" are really control registers, and are always RW */
4184 static void qib_set_cntr_7220_sample(struct qib_pportdata *ppd, u32 intv,
4185 u32 start)
4186 {
4187 write_7220_creg(ppd->dd, cr_psinterval, intv);
4188 write_7220_creg(ppd->dd, cr_psstart, start);
4189 }
4190
4191 /*
4192 * NOTE: no real attempt is made to generalize the SDMA stuff.
4193 * At some point "soon" we will have a new more generalized
4194 * set of sdma interface, and then we'll clean this up.
4195 */
4196
4197 /* Must be called with sdma_lock held, or before init finished */
4198 static void qib_sdma_update_7220_tail(struct qib_pportdata *ppd, u16 tail)
4199 {
4200 /* Commit writes to memory and advance the tail on the chip */
4201 wmb();
4202 ppd->sdma_descq_tail = tail;
4203 qib_write_kreg(ppd->dd, kr_senddmatail, tail);
4204 }
4205
4206 static void qib_sdma_set_7220_desc_cnt(struct qib_pportdata *ppd, unsigned cnt)
4207 {
4208 }
4209
4210 static struct sdma_set_state_action sdma_7220_action_table[] = {
4211 [qib_sdma_state_s00_hw_down] = {
4212 .op_enable = 0,
4213 .op_intenable = 0,
4214 .op_halt = 0,
4215 .go_s99_running_tofalse = 1,
4216 },
4217 [qib_sdma_state_s10_hw_start_up_wait] = {
4218 .op_enable = 1,
4219 .op_intenable = 1,
4220 .op_halt = 1,
4221 },
4222 [qib_sdma_state_s20_idle] = {
4223 .op_enable = 1,
4224 .op_intenable = 1,
4225 .op_halt = 1,
4226 },
4227 [qib_sdma_state_s30_sw_clean_up_wait] = {
4228 .op_enable = 0,
4229 .op_intenable = 1,
4230 .op_halt = 0,
4231 },
4232 [qib_sdma_state_s40_hw_clean_up_wait] = {
4233 .op_enable = 1,
4234 .op_intenable = 1,
4235 .op_halt = 1,
4236 },
4237 [qib_sdma_state_s50_hw_halt_wait] = {
4238 .op_enable = 1,
4239 .op_intenable = 1,
4240 .op_halt = 1,
4241 },
4242 [qib_sdma_state_s99_running] = {
4243 .op_enable = 1,
4244 .op_intenable = 1,
4245 .op_halt = 0,
4246 .go_s99_running_totrue = 1,
4247 },
4248 };
4249
4250 static void qib_7220_sdma_init_early(struct qib_pportdata *ppd)
4251 {
4252 ppd->sdma_state.set_state_action = sdma_7220_action_table;
4253 }
4254
4255 static int init_sdma_7220_regs(struct qib_pportdata *ppd)
4256 {
4257 struct qib_devdata *dd = ppd->dd;
4258 unsigned i, n;
4259 u64 senddmabufmask[3] = { 0 };
4260
4261 /* Set SendDmaBase */
4262 qib_write_kreg(dd, kr_senddmabase, ppd->sdma_descq_phys);
4263 qib_sdma_7220_setlengen(ppd);
4264 qib_sdma_update_7220_tail(ppd, 0); /* Set SendDmaTail */
4265 /* Set SendDmaHeadAddr */
4266 qib_write_kreg(dd, kr_senddmaheadaddr, ppd->sdma_head_phys);
4267
4268 /*
4269 * Reserve all the former "kernel" piobufs, using high number range
4270 * so we get as many 4K buffers as possible
4271 */
4272 n = dd->piobcnt2k + dd->piobcnt4k;
4273 i = n - dd->cspec->sdmabufcnt;
4274
4275 for (; i < n; ++i) {
4276 unsigned word = i / 64;
4277 unsigned bit = i & 63;
4278
4279 BUG_ON(word >= 3);
4280 senddmabufmask[word] |= 1ULL << bit;
4281 }
4282 qib_write_kreg(dd, kr_senddmabufmask0, senddmabufmask[0]);
4283 qib_write_kreg(dd, kr_senddmabufmask1, senddmabufmask[1]);
4284 qib_write_kreg(dd, kr_senddmabufmask2, senddmabufmask[2]);
4285
4286 ppd->sdma_state.first_sendbuf = i;
4287 ppd->sdma_state.last_sendbuf = n;
4288
4289 return 0;
4290 }
4291
4292 /* sdma_lock must be held */
4293 static u16 qib_sdma_7220_gethead(struct qib_pportdata *ppd)
4294 {
4295 struct qib_devdata *dd = ppd->dd;
4296 int sane;
4297 int use_dmahead;
4298 u16 swhead;
4299 u16 swtail;
4300 u16 cnt;
4301 u16 hwhead;
4302
4303 use_dmahead = __qib_sdma_running(ppd) &&
4304 (dd->flags & QIB_HAS_SDMA_TIMEOUT);
4305 retry:
4306 hwhead = use_dmahead ?
4307 (u16)le64_to_cpu(*ppd->sdma_head_dma) :
4308 (u16)qib_read_kreg32(dd, kr_senddmahead);
4309
4310 swhead = ppd->sdma_descq_head;
4311 swtail = ppd->sdma_descq_tail;
4312 cnt = ppd->sdma_descq_cnt;
4313
4314 if (swhead < swtail) {
4315 /* not wrapped */
4316 sane = (hwhead >= swhead) & (hwhead <= swtail);
4317 } else if (swhead > swtail) {
4318 /* wrapped around */
4319 sane = ((hwhead >= swhead) && (hwhead < cnt)) ||
4320 (hwhead <= swtail);
4321 } else {
4322 /* empty */
4323 sane = (hwhead == swhead);
4324 }
4325
4326 if (unlikely(!sane)) {
4327 if (use_dmahead) {
4328 /* try one more time, directly from the register */
4329 use_dmahead = 0;
4330 goto retry;
4331 }
4332 /* assume no progress */
4333 hwhead = swhead;
4334 }
4335
4336 return hwhead;
4337 }
4338
4339 static int qib_sdma_7220_busy(struct qib_pportdata *ppd)
4340 {
4341 u64 hwstatus = qib_read_kreg64(ppd->dd, kr_senddmastatus);
4342
4343 return (hwstatus & SYM_MASK(SendDmaStatus, ScoreBoardDrainInProg)) ||
4344 (hwstatus & SYM_MASK(SendDmaStatus, AbortInProg)) ||
4345 (hwstatus & SYM_MASK(SendDmaStatus, InternalSDmaEnable)) ||
4346 !(hwstatus & SYM_MASK(SendDmaStatus, ScbEmpty));
4347 }
4348
4349 /*
4350 * Compute the amount of delay before sending the next packet if the
4351 * port's send rate differs from the static rate set for the QP.
4352 * Since the delay affects this packet but the amount of the delay is
4353 * based on the length of the previous packet, use the last delay computed
4354 * and save the delay count for this packet to be used next time
4355 * we get here.
4356 */
4357 static u32 qib_7220_setpbc_control(struct qib_pportdata *ppd, u32 plen,
4358 u8 srate, u8 vl)
4359 {
4360 u8 snd_mult = ppd->delay_mult;
4361 u8 rcv_mult = ib_rate_to_delay[srate];
4362 u32 ret = ppd->cpspec->last_delay_mult;
4363
4364 ppd->cpspec->last_delay_mult = (rcv_mult > snd_mult) ?
4365 (plen * (rcv_mult - snd_mult) + 1) >> 1 : 0;
4366
4367 /* Indicate VL15, if necessary */
4368 if (vl == 15)
4369 ret |= PBC_7220_VL15_SEND_CTRL;
4370 return ret;
4371 }
4372
4373 static void qib_7220_initvl15_bufs(struct qib_devdata *dd)
4374 {
4375 }
4376
4377 static void qib_7220_init_ctxt(struct qib_ctxtdata *rcd)
4378 {
4379 if (!rcd->ctxt) {
4380 rcd->rcvegrcnt = IBA7220_KRCVEGRCNT;
4381 rcd->rcvegr_tid_base = 0;
4382 } else {
4383 rcd->rcvegrcnt = rcd->dd->cspec->rcvegrcnt;
4384 rcd->rcvegr_tid_base = IBA7220_KRCVEGRCNT +
4385 (rcd->ctxt - 1) * rcd->rcvegrcnt;
4386 }
4387 }
4388
4389 static void qib_7220_txchk_change(struct qib_devdata *dd, u32 start,
4390 u32 len, u32 which, struct qib_ctxtdata *rcd)
4391 {
4392 int i;
4393 unsigned long flags;
4394
4395 switch (which) {
4396 case TXCHK_CHG_TYPE_KERN:
4397 /* see if we need to raise avail update threshold */
4398 spin_lock_irqsave(&dd->uctxt_lock, flags);
4399 for (i = dd->first_user_ctxt;
4400 dd->cspec->updthresh != dd->cspec->updthresh_dflt
4401 && i < dd->cfgctxts; i++)
4402 if (dd->rcd[i] && dd->rcd[i]->subctxt_cnt &&
4403 ((dd->rcd[i]->piocnt / dd->rcd[i]->subctxt_cnt) - 1)
4404 < dd->cspec->updthresh_dflt)
4405 break;
4406 spin_unlock_irqrestore(&dd->uctxt_lock, flags);
4407 if (i == dd->cfgctxts) {
4408 spin_lock_irqsave(&dd->sendctrl_lock, flags);
4409 dd->cspec->updthresh = dd->cspec->updthresh_dflt;
4410 dd->sendctrl &= ~SYM_MASK(SendCtrl, AvailUpdThld);
4411 dd->sendctrl |= (dd->cspec->updthresh &
4412 SYM_RMASK(SendCtrl, AvailUpdThld)) <<
4413 SYM_LSB(SendCtrl, AvailUpdThld);
4414 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
4415 sendctrl_7220_mod(dd->pport, QIB_SENDCTRL_AVAIL_BLIP);
4416 }
4417 break;
4418 case TXCHK_CHG_TYPE_USER:
4419 spin_lock_irqsave(&dd->sendctrl_lock, flags);
4420 if (rcd && rcd->subctxt_cnt && ((rcd->piocnt
4421 / rcd->subctxt_cnt) - 1) < dd->cspec->updthresh) {
4422 dd->cspec->updthresh = (rcd->piocnt /
4423 rcd->subctxt_cnt) - 1;
4424 dd->sendctrl &= ~SYM_MASK(SendCtrl, AvailUpdThld);
4425 dd->sendctrl |= (dd->cspec->updthresh &
4426 SYM_RMASK(SendCtrl, AvailUpdThld))
4427 << SYM_LSB(SendCtrl, AvailUpdThld);
4428 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
4429 sendctrl_7220_mod(dd->pport, QIB_SENDCTRL_AVAIL_BLIP);
4430 } else
4431 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
4432 break;
4433 }
4434 }
4435
4436 static void writescratch(struct qib_devdata *dd, u32 val)
4437 {
4438 qib_write_kreg(dd, kr_scratch, val);
4439 }
4440
4441 #define VALID_TS_RD_REG_MASK 0xBF
4442 /**
4443 * qib_7220_tempsense_read - read register of temp sensor via TWSI
4444 * @dd: the qlogic_ib device
4445 * @regnum: register to read from
4446 *
4447 * returns reg contents (0..255) or < 0 for error
4448 */
4449 static int qib_7220_tempsense_rd(struct qib_devdata *dd, int regnum)
4450 {
4451 int ret;
4452 u8 rdata;
4453
4454 if (regnum > 7) {
4455 ret = -EINVAL;
4456 goto bail;
4457 }
4458
4459 /* return a bogus value for (the one) register we do not have */
4460 if (!((1 << regnum) & VALID_TS_RD_REG_MASK)) {
4461 ret = 0;
4462 goto bail;
4463 }
4464
4465 ret = mutex_lock_interruptible(&dd->eep_lock);
4466 if (ret)
4467 goto bail;
4468
4469 ret = qib_twsi_blk_rd(dd, QIB_TWSI_TEMP_DEV, regnum, &rdata, 1);
4470 if (!ret)
4471 ret = rdata;
4472
4473 mutex_unlock(&dd->eep_lock);
4474
4475 /*
4476 * There are three possibilities here:
4477 * ret is actual value (0..255)
4478 * ret is -ENXIO or -EINVAL from twsi code or this file
4479 * ret is -EINTR from mutex_lock_interruptible.
4480 */
4481 bail:
4482 return ret;
4483 }
4484
4485 /* Dummy function, as 7220 boards never disable EEPROM Write */
4486 static int qib_7220_eeprom_wen(struct qib_devdata *dd, int wen)
4487 {
4488 return 1;
4489 }
4490
4491 /**
4492 * qib_init_iba7220_funcs - set up the chip-specific function pointers
4493 * @dev: the pci_dev for qlogic_ib device
4494 * @ent: pci_device_id struct for this dev
4495 *
4496 * This is global, and is called directly at init to set up the
4497 * chip-specific function pointers for later use.
4498 */
4499 struct qib_devdata *qib_init_iba7220_funcs(struct pci_dev *pdev,
4500 const struct pci_device_id *ent)
4501 {
4502 struct qib_devdata *dd;
4503 int ret;
4504 u32 boardid, minwidth;
4505
4506 dd = qib_alloc_devdata(pdev, sizeof(struct qib_chip_specific) +
4507 sizeof(struct qib_chippport_specific));
4508 if (IS_ERR(dd))
4509 goto bail;
4510
4511 dd->f_bringup_serdes = qib_7220_bringup_serdes;
4512 dd->f_cleanup = qib_setup_7220_cleanup;
4513 dd->f_clear_tids = qib_7220_clear_tids;
4514 dd->f_free_irq = qib_7220_free_irq;
4515 dd->f_get_base_info = qib_7220_get_base_info;
4516 dd->f_get_msgheader = qib_7220_get_msgheader;
4517 dd->f_getsendbuf = qib_7220_getsendbuf;
4518 dd->f_gpio_mod = gpio_7220_mod;
4519 dd->f_eeprom_wen = qib_7220_eeprom_wen;
4520 dd->f_hdrqempty = qib_7220_hdrqempty;
4521 dd->f_ib_updown = qib_7220_ib_updown;
4522 dd->f_init_ctxt = qib_7220_init_ctxt;
4523 dd->f_initvl15_bufs = qib_7220_initvl15_bufs;
4524 dd->f_intr_fallback = qib_7220_intr_fallback;
4525 dd->f_late_initreg = qib_late_7220_initreg;
4526 dd->f_setpbc_control = qib_7220_setpbc_control;
4527 dd->f_portcntr = qib_portcntr_7220;
4528 dd->f_put_tid = qib_7220_put_tid;
4529 dd->f_quiet_serdes = qib_7220_quiet_serdes;
4530 dd->f_rcvctrl = rcvctrl_7220_mod;
4531 dd->f_read_cntrs = qib_read_7220cntrs;
4532 dd->f_read_portcntrs = qib_read_7220portcntrs;
4533 dd->f_reset = qib_setup_7220_reset;
4534 dd->f_init_sdma_regs = init_sdma_7220_regs;
4535 dd->f_sdma_busy = qib_sdma_7220_busy;
4536 dd->f_sdma_gethead = qib_sdma_7220_gethead;
4537 dd->f_sdma_sendctrl = qib_7220_sdma_sendctrl;
4538 dd->f_sdma_set_desc_cnt = qib_sdma_set_7220_desc_cnt;
4539 dd->f_sdma_update_tail = qib_sdma_update_7220_tail;
4540 dd->f_sdma_hw_clean_up = qib_7220_sdma_hw_clean_up;
4541 dd->f_sdma_hw_start_up = qib_7220_sdma_hw_start_up;
4542 dd->f_sdma_init_early = qib_7220_sdma_init_early;
4543 dd->f_sendctrl = sendctrl_7220_mod;
4544 dd->f_set_armlaunch = qib_set_7220_armlaunch;
4545 dd->f_set_cntr_sample = qib_set_cntr_7220_sample;
4546 dd->f_iblink_state = qib_7220_iblink_state;
4547 dd->f_ibphys_portstate = qib_7220_phys_portstate;
4548 dd->f_get_ib_cfg = qib_7220_get_ib_cfg;
4549 dd->f_set_ib_cfg = qib_7220_set_ib_cfg;
4550 dd->f_set_ib_loopback = qib_7220_set_loopback;
4551 dd->f_set_intr_state = qib_7220_set_intr_state;
4552 dd->f_setextled = qib_setup_7220_setextled;
4553 dd->f_txchk_change = qib_7220_txchk_change;
4554 dd->f_update_usrhead = qib_update_7220_usrhead;
4555 dd->f_wantpiobuf_intr = qib_wantpiobuf_7220_intr;
4556 dd->f_xgxs_reset = qib_7220_xgxs_reset;
4557 dd->f_writescratch = writescratch;
4558 dd->f_tempsense_rd = qib_7220_tempsense_rd;
4559 /*
4560 * Do remaining pcie setup and save pcie values in dd.
4561 * Any error printing is already done by the init code.
4562 * On return, we have the chip mapped, but chip registers
4563 * are not set up until start of qib_init_7220_variables.
4564 */
4565 ret = qib_pcie_ddinit(dd, pdev, ent);
4566 if (ret < 0)
4567 goto bail_free;
4568
4569 /* initialize chip-specific variables */
4570 ret = qib_init_7220_variables(dd);
4571 if (ret)
4572 goto bail_cleanup;
4573
4574 if (qib_mini_init)
4575 goto bail;
4576
4577 boardid = SYM_FIELD(dd->revision, Revision,
4578 BoardID);
4579 switch (boardid) {
4580 case 0:
4581 case 2:
4582 case 10:
4583 case 12:
4584 minwidth = 16; /* x16 capable boards */
4585 break;
4586 default:
4587 minwidth = 8; /* x8 capable boards */
4588 break;
4589 }
4590 if (qib_pcie_params(dd, minwidth, NULL, NULL))
4591 qib_dev_err(dd, "Failed to setup PCIe or interrupts; "
4592 "continuing anyway\n");
4593
4594 /* save IRQ for possible later use */
4595 dd->cspec->irq = pdev->irq;
4596
4597 if (qib_read_kreg64(dd, kr_hwerrstatus) &
4598 QLOGIC_IB_HWE_SERDESPLLFAILED)
4599 qib_write_kreg(dd, kr_hwerrclear,
4600 QLOGIC_IB_HWE_SERDESPLLFAILED);
4601
4602 /* setup interrupt handler (interrupt type handled above) */
4603 qib_setup_7220_interrupt(dd);
4604 qib_7220_init_hwerrors(dd);
4605
4606 /* clear diagctrl register, in case diags were running and crashed */
4607 qib_write_kreg(dd, kr_hwdiagctrl, 0);
4608
4609 goto bail;
4610
4611 bail_cleanup:
4612 qib_pcie_ddcleanup(dd);
4613 bail_free:
4614 qib_free_devdata(dd);
4615 dd = ERR_PTR(ret);
4616 bail:
4617 return dd;
4618 }