2 * Copyright (c) 2011 - 2017 Intel Corporation. All rights reserved.
3 * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation.
5 * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
11 * OpenIB.org BSD license below:
13 * Redistribution and use in source and binary forms, with or
14 * without modification, are permitted provided that the following
17 * - Redistributions of source code must retain the above
18 * copyright notice, this list of conditions and the following
21 * - Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimer in the documentation and/or other materials
24 * provided with the distribution.
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 * This file contains all of the code that is specific to the
37 * QLogic_IB 7220 chip (except that specific to the SerDes)
40 #include <linux/interrupt.h>
41 #include <linux/pci.h>
42 #include <linux/delay.h>
43 #include <linux/module.h>
45 #include <rdma/ib_verbs.h>
50 static void qib_setup_7220_setextled(struct qib_pportdata *, u32);
51 static void qib_7220_handle_hwerrors(struct qib_devdata *, char *, size_t);
52 static void sendctrl_7220_mod(struct qib_pportdata *ppd, u32 op);
53 static u32 qib_7220_iblink_state(u64);
54 static u8 qib_7220_phys_portstate(u64);
55 static void qib_sdma_update_7220_tail(struct qib_pportdata *, u16);
56 static void qib_set_ib_7220_lstate(struct qib_pportdata *, u16, u16);
59 * This file contains almost all the chip-specific register information and
60 * access functions for the QLogic QLogic_IB 7220 PCI-Express chip, with the
61 * exception of SerDes support, which in in qib_sd7220.c.
64 /* Below uses machine-generated qib_chipnum_regs.h file */
65 #define KREG_IDX(regname) (QIB_7220_##regname##_OFFS / sizeof(u64))
67 /* Use defines to tie machine-generated names to lower-case names */
68 #define kr_control KREG_IDX(Control)
69 #define kr_counterregbase KREG_IDX(CntrRegBase)
70 #define kr_errclear KREG_IDX(ErrClear)
71 #define kr_errmask KREG_IDX(ErrMask)
72 #define kr_errstatus KREG_IDX(ErrStatus)
73 #define kr_extctrl KREG_IDX(EXTCtrl)
74 #define kr_extstatus KREG_IDX(EXTStatus)
75 #define kr_gpio_clear KREG_IDX(GPIOClear)
76 #define kr_gpio_mask KREG_IDX(GPIOMask)
77 #define kr_gpio_out KREG_IDX(GPIOOut)
78 #define kr_gpio_status KREG_IDX(GPIOStatus)
79 #define kr_hrtbt_guid KREG_IDX(HRTBT_GUID)
80 #define kr_hwdiagctrl KREG_IDX(HwDiagCtrl)
81 #define kr_hwerrclear KREG_IDX(HwErrClear)
82 #define kr_hwerrmask KREG_IDX(HwErrMask)
83 #define kr_hwerrstatus KREG_IDX(HwErrStatus)
84 #define kr_ibcctrl KREG_IDX(IBCCtrl)
85 #define kr_ibcddrctrl KREG_IDX(IBCDDRCtrl)
86 #define kr_ibcddrstatus KREG_IDX(IBCDDRStatus)
87 #define kr_ibcstatus KREG_IDX(IBCStatus)
88 #define kr_ibserdesctrl KREG_IDX(IBSerDesCtrl)
89 #define kr_intclear KREG_IDX(IntClear)
90 #define kr_intmask KREG_IDX(IntMask)
91 #define kr_intstatus KREG_IDX(IntStatus)
92 #define kr_ncmodectrl KREG_IDX(IBNCModeCtrl)
93 #define kr_palign KREG_IDX(PageAlign)
94 #define kr_partitionkey KREG_IDX(RcvPartitionKey)
95 #define kr_portcnt KREG_IDX(PortCnt)
96 #define kr_rcvbthqp KREG_IDX(RcvBTHQP)
97 #define kr_rcvctrl KREG_IDX(RcvCtrl)
98 #define kr_rcvegrbase KREG_IDX(RcvEgrBase)
99 #define kr_rcvegrcnt KREG_IDX(RcvEgrCnt)
100 #define kr_rcvhdrcnt KREG_IDX(RcvHdrCnt)
101 #define kr_rcvhdrentsize KREG_IDX(RcvHdrEntSize)
102 #define kr_rcvhdrsize KREG_IDX(RcvHdrSize)
103 #define kr_rcvpktledcnt KREG_IDX(RcvPktLEDCnt)
104 #define kr_rcvtidbase KREG_IDX(RcvTIDBase)
105 #define kr_rcvtidcnt KREG_IDX(RcvTIDCnt)
106 #define kr_revision KREG_IDX(Revision)
107 #define kr_scratch KREG_IDX(Scratch)
108 #define kr_sendbuffererror KREG_IDX(SendBufErr0)
109 #define kr_sendctrl KREG_IDX(SendCtrl)
110 #define kr_senddmabase KREG_IDX(SendDmaBase)
111 #define kr_senddmabufmask0 KREG_IDX(SendDmaBufMask0)
112 #define kr_senddmabufmask1 (KREG_IDX(SendDmaBufMask0) + 1)
113 #define kr_senddmabufmask2 (KREG_IDX(SendDmaBufMask0) + 2)
114 #define kr_senddmahead KREG_IDX(SendDmaHead)
115 #define kr_senddmaheadaddr KREG_IDX(SendDmaHeadAddr)
116 #define kr_senddmalengen KREG_IDX(SendDmaLenGen)
117 #define kr_senddmastatus KREG_IDX(SendDmaStatus)
118 #define kr_senddmatail KREG_IDX(SendDmaTail)
119 #define kr_sendpioavailaddr KREG_IDX(SendBufAvailAddr)
120 #define kr_sendpiobufbase KREG_IDX(SendBufBase)
121 #define kr_sendpiobufcnt KREG_IDX(SendBufCnt)
122 #define kr_sendpiosize KREG_IDX(SendBufSize)
123 #define kr_sendregbase KREG_IDX(SendRegBase)
124 #define kr_userregbase KREG_IDX(UserRegBase)
125 #define kr_xgxs_cfg KREG_IDX(XGXSCfg)
127 /* These must only be written via qib_write_kreg_ctxt() */
128 #define kr_rcvhdraddr KREG_IDX(RcvHdrAddr0)
129 #define kr_rcvhdrtailaddr KREG_IDX(RcvHdrTailAddr0)
132 #define CREG_IDX(regname) ((QIB_7220_##regname##_OFFS - \
133 QIB_7220_LBIntCnt_OFFS) / sizeof(u64))
135 #define cr_badformat CREG_IDX(RxVersionErrCnt)
136 #define cr_erricrc CREG_IDX(RxICRCErrCnt)
137 #define cr_errlink CREG_IDX(RxLinkMalformCnt)
138 #define cr_errlpcrc CREG_IDX(RxLPCRCErrCnt)
139 #define cr_errpkey CREG_IDX(RxPKeyMismatchCnt)
140 #define cr_rcvflowctrl_err CREG_IDX(RxFlowCtrlViolCnt)
141 #define cr_err_rlen CREG_IDX(RxLenErrCnt)
142 #define cr_errslen CREG_IDX(TxLenErrCnt)
143 #define cr_errtidfull CREG_IDX(RxTIDFullErrCnt)
144 #define cr_errtidvalid CREG_IDX(RxTIDValidErrCnt)
145 #define cr_errvcrc CREG_IDX(RxVCRCErrCnt)
146 #define cr_ibstatuschange CREG_IDX(IBStatusChangeCnt)
147 #define cr_lbint CREG_IDX(LBIntCnt)
148 #define cr_invalidrlen CREG_IDX(RxMaxMinLenErrCnt)
149 #define cr_invalidslen CREG_IDX(TxMaxMinLenErrCnt)
150 #define cr_lbflowstall CREG_IDX(LBFlowStallCnt)
151 #define cr_pktrcv CREG_IDX(RxDataPktCnt)
152 #define cr_pktrcvflowctrl CREG_IDX(RxFlowPktCnt)
153 #define cr_pktsend CREG_IDX(TxDataPktCnt)
154 #define cr_pktsendflow CREG_IDX(TxFlowPktCnt)
155 #define cr_portovfl CREG_IDX(RxP0HdrEgrOvflCnt)
156 #define cr_rcvebp CREG_IDX(RxEBPCnt)
157 #define cr_rcvovfl CREG_IDX(RxBufOvflCnt)
158 #define cr_senddropped CREG_IDX(TxDroppedPktCnt)
159 #define cr_sendstall CREG_IDX(TxFlowStallCnt)
160 #define cr_sendunderrun CREG_IDX(TxUnderrunCnt)
161 #define cr_wordrcv CREG_IDX(RxDwordCnt)
162 #define cr_wordsend CREG_IDX(TxDwordCnt)
163 #define cr_txunsupvl CREG_IDX(TxUnsupVLErrCnt)
164 #define cr_rxdroppkt CREG_IDX(RxDroppedPktCnt)
165 #define cr_iblinkerrrecov CREG_IDX(IBLinkErrRecoveryCnt)
166 #define cr_iblinkdown CREG_IDX(IBLinkDownedCnt)
167 #define cr_ibsymbolerr CREG_IDX(IBSymbolErrCnt)
168 #define cr_vl15droppedpkt CREG_IDX(RxVL15DroppedPktCnt)
169 #define cr_rxotherlocalphyerr CREG_IDX(RxOtherLocalPhyErrCnt)
170 #define cr_excessbufferovfl CREG_IDX(ExcessBufferOvflCnt)
171 #define cr_locallinkintegrityerr CREG_IDX(LocalLinkIntegrityErrCnt)
172 #define cr_rxvlerr CREG_IDX(RxVlErrCnt)
173 #define cr_rxdlidfltr CREG_IDX(RxDlidFltrCnt)
174 #define cr_psstat CREG_IDX(PSStat)
175 #define cr_psstart CREG_IDX(PSStart)
176 #define cr_psinterval CREG_IDX(PSInterval)
177 #define cr_psrcvdatacount CREG_IDX(PSRcvDataCount)
178 #define cr_psrcvpktscount CREG_IDX(PSRcvPktsCount)
179 #define cr_psxmitdatacount CREG_IDX(PSXmitDataCount)
180 #define cr_psxmitpktscount CREG_IDX(PSXmitPktsCount)
181 #define cr_psxmitwaitcount CREG_IDX(PSXmitWaitCount)
182 #define cr_txsdmadesc CREG_IDX(TxSDmaDescCnt)
183 #define cr_pcieretrydiag CREG_IDX(PcieRetryBufDiagQwordCnt)
185 #define SYM_RMASK(regname, fldname) ((u64) \
186 QIB_7220_##regname##_##fldname##_RMASK)
187 #define SYM_MASK(regname, fldname) ((u64) \
188 QIB_7220_##regname##_##fldname##_RMASK << \
189 QIB_7220_##regname##_##fldname##_LSB)
190 #define SYM_LSB(regname, fldname) (QIB_7220_##regname##_##fldname##_LSB)
191 #define SYM_FIELD(value, regname, fldname) ((u64) \
192 (((value) >> SYM_LSB(regname, fldname)) & \
193 SYM_RMASK(regname, fldname)))
194 #define ERR_MASK(fldname) SYM_MASK(ErrMask, fldname##Mask)
195 #define HWE_MASK(fldname) SYM_MASK(HwErrMask, fldname##Mask)
198 #define QLOGIC_IB_IBCC_LINKINITCMD_DISABLE 1
199 /* cycle through TS1/TS2 till OK */
200 #define QLOGIC_IB_IBCC_LINKINITCMD_POLL 2
201 /* wait for TS1, then go on */
202 #define QLOGIC_IB_IBCC_LINKINITCMD_SLEEP 3
203 #define QLOGIC_IB_IBCC_LINKINITCMD_SHIFT 16
205 #define QLOGIC_IB_IBCC_LINKCMD_DOWN 1 /* move to 0x11 */
206 #define QLOGIC_IB_IBCC_LINKCMD_ARMED 2 /* move to 0x21 */
207 #define QLOGIC_IB_IBCC_LINKCMD_ACTIVE 3 /* move to 0x31 */
209 #define BLOB_7220_IBCHG 0x81
212 * We could have a single register get/put routine, that takes a group type,
213 * but this is somewhat clearer and cleaner. It also gives us some error
214 * checking. 64 bit register reads should always work, but are inefficient
215 * on opteron (the northbridge always generates 2 separate HT 32 bit reads),
216 * so we use kreg32 wherever possible. User register and counter register
217 * reads are always 32 bit reads, so only one form of those routines.
221 * qib_read_ureg32 - read 32-bit virtualized per-context register
223 * @regno: register number
224 * @ctxt: context number
226 * Return the contents of a register that is virtualized to be per context.
227 * Returns -1 on errors (not distinguishable from valid contents at
228 * runtime; we may add a separate error variable at some point).
230 static inline u32 qib_read_ureg32(const struct qib_devdata *dd,
231 enum qib_ureg regno, int ctxt)
233 if (!dd->kregbase || !(dd->flags & QIB_PRESENT))
237 return readl(regno + (u64 __iomem *)
238 ((char __iomem *)dd->userbase +
239 dd->ureg_align * ctxt));
241 return readl(regno + (u64 __iomem *)
243 (char __iomem *)dd->kregbase +
244 dd->ureg_align * ctxt));
248 * qib_write_ureg - write 32-bit virtualized per-context register
250 * @regno: register number
254 * Write the contents of a register that is virtualized to be per context.
256 static inline void qib_write_ureg(const struct qib_devdata *dd,
257 enum qib_ureg regno, u64 value, int ctxt)
262 ubase = (u64 __iomem *)
263 ((char __iomem *) dd->userbase +
264 dd->ureg_align * ctxt);
266 ubase = (u64 __iomem *)
268 (char __iomem *) dd->kregbase +
269 dd->ureg_align * ctxt);
271 if (dd->kregbase && (dd->flags & QIB_PRESENT))
272 writeq(value, &ubase[regno]);
276 * qib_write_kreg_ctxt - write a device's per-ctxt 64-bit kernel register
277 * @dd: the qlogic_ib device
278 * @regno: the register number to write
279 * @ctxt: the context containing the register
280 * @value: the value to write
282 static inline void qib_write_kreg_ctxt(const struct qib_devdata *dd,
283 const u16 regno, unsigned ctxt,
286 qib_write_kreg(dd, regno + ctxt, value);
289 static inline void write_7220_creg(const struct qib_devdata *dd,
290 u16 regno, u64 value)
292 if (dd->cspec->cregbase && (dd->flags & QIB_PRESENT))
293 writeq(value, &dd->cspec->cregbase[regno]);
296 static inline u64 read_7220_creg(const struct qib_devdata *dd, u16 regno)
298 if (!dd->cspec->cregbase || !(dd->flags & QIB_PRESENT))
300 return readq(&dd->cspec->cregbase[regno]);
303 static inline u32 read_7220_creg32(const struct qib_devdata *dd, u16 regno)
305 if (!dd->cspec->cregbase || !(dd->flags & QIB_PRESENT))
307 return readl(&dd->cspec->cregbase[regno]);
310 /* kr_revision bits */
311 #define QLOGIC_IB_R_EMULATORREV_MASK ((1ULL << 22) - 1)
312 #define QLOGIC_IB_R_EMULATORREV_SHIFT 40
314 /* kr_control bits */
315 #define QLOGIC_IB_C_RESET (1U << 7)
317 /* kr_intstatus, kr_intclear, kr_intmask bits */
318 #define QLOGIC_IB_I_RCVURG_MASK ((1ULL << 17) - 1)
319 #define QLOGIC_IB_I_RCVURG_SHIFT 32
320 #define QLOGIC_IB_I_RCVAVAIL_MASK ((1ULL << 17) - 1)
321 #define QLOGIC_IB_I_RCVAVAIL_SHIFT 0
322 #define QLOGIC_IB_I_SERDESTRIMDONE (1ULL << 27)
324 #define QLOGIC_IB_C_FREEZEMODE 0x00000002
325 #define QLOGIC_IB_C_LINKENABLE 0x00000004
327 #define QLOGIC_IB_I_SDMAINT 0x8000000000000000ULL
328 #define QLOGIC_IB_I_SDMADISABLED 0x4000000000000000ULL
329 #define QLOGIC_IB_I_ERROR 0x0000000080000000ULL
330 #define QLOGIC_IB_I_SPIOSENT 0x0000000040000000ULL
331 #define QLOGIC_IB_I_SPIOBUFAVAIL 0x0000000020000000ULL
332 #define QLOGIC_IB_I_GPIO 0x0000000010000000ULL
334 /* variables for sanity checking interrupt and errors */
335 #define QLOGIC_IB_I_BITSEXTANT \
336 (QLOGIC_IB_I_SDMAINT | QLOGIC_IB_I_SDMADISABLED | \
337 (QLOGIC_IB_I_RCVURG_MASK << QLOGIC_IB_I_RCVURG_SHIFT) | \
338 (QLOGIC_IB_I_RCVAVAIL_MASK << \
339 QLOGIC_IB_I_RCVAVAIL_SHIFT) | \
340 QLOGIC_IB_I_ERROR | QLOGIC_IB_I_SPIOSENT | \
341 QLOGIC_IB_I_SPIOBUFAVAIL | QLOGIC_IB_I_GPIO | \
342 QLOGIC_IB_I_SERDESTRIMDONE)
344 #define IB_HWE_BITSEXTANT \
345 (HWE_MASK(RXEMemParityErr) | \
346 HWE_MASK(TXEMemParityErr) | \
347 (QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK << \
348 QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT) | \
349 QLOGIC_IB_HWE_PCIE1PLLFAILED | \
350 QLOGIC_IB_HWE_PCIE0PLLFAILED | \
351 QLOGIC_IB_HWE_PCIEPOISONEDTLP | \
352 QLOGIC_IB_HWE_PCIECPLTIMEOUT | \
353 QLOGIC_IB_HWE_PCIEBUSPARITYXTLH | \
354 QLOGIC_IB_HWE_PCIEBUSPARITYXADM | \
355 QLOGIC_IB_HWE_PCIEBUSPARITYRADM | \
356 HWE_MASK(PowerOnBISTFailed) | \
357 QLOGIC_IB_HWE_COREPLL_FBSLIP | \
358 QLOGIC_IB_HWE_COREPLL_RFSLIP | \
359 QLOGIC_IB_HWE_SERDESPLLFAILED | \
360 HWE_MASK(IBCBusToSPCParityErr) | \
361 HWE_MASK(IBCBusFromSPCParityErr) | \
362 QLOGIC_IB_HWE_PCIECPLDATAQUEUEERR | \
363 QLOGIC_IB_HWE_PCIECPLHDRQUEUEERR | \
364 QLOGIC_IB_HWE_SDMAMEMREADERR | \
365 QLOGIC_IB_HWE_CLK_UC_PLLNOTLOCKED | \
366 QLOGIC_IB_HWE_PCIESERDESQ0PCLKNOTDETECT | \
367 QLOGIC_IB_HWE_PCIESERDESQ1PCLKNOTDETECT | \
368 QLOGIC_IB_HWE_PCIESERDESQ2PCLKNOTDETECT | \
369 QLOGIC_IB_HWE_PCIESERDESQ3PCLKNOTDETECT | \
370 QLOGIC_IB_HWE_DDSRXEQMEMORYPARITYERR | \
371 QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR | \
372 QLOGIC_IB_HWE_PCIE_UC_OCT0MEMORYPARITYERR | \
373 QLOGIC_IB_HWE_PCIE_UC_OCT1MEMORYPARITYERR)
375 #define IB_E_BITSEXTANT \
376 (ERR_MASK(RcvFormatErr) | ERR_MASK(RcvVCRCErr) | \
377 ERR_MASK(RcvICRCErr) | ERR_MASK(RcvMinPktLenErr) | \
378 ERR_MASK(RcvMaxPktLenErr) | ERR_MASK(RcvLongPktLenErr) | \
379 ERR_MASK(RcvShortPktLenErr) | ERR_MASK(RcvUnexpectedCharErr) | \
380 ERR_MASK(RcvUnsupportedVLErr) | ERR_MASK(RcvEBPErr) | \
381 ERR_MASK(RcvIBFlowErr) | ERR_MASK(RcvBadVersionErr) | \
382 ERR_MASK(RcvEgrFullErr) | ERR_MASK(RcvHdrFullErr) | \
383 ERR_MASK(RcvBadTidErr) | ERR_MASK(RcvHdrLenErr) | \
384 ERR_MASK(RcvHdrErr) | ERR_MASK(RcvIBLostLinkErr) | \
385 ERR_MASK(SendSpecialTriggerErr) | \
386 ERR_MASK(SDmaDisabledErr) | ERR_MASK(SendMinPktLenErr) | \
387 ERR_MASK(SendMaxPktLenErr) | ERR_MASK(SendUnderRunErr) | \
388 ERR_MASK(SendPktLenErr) | ERR_MASK(SendDroppedSmpPktErr) | \
389 ERR_MASK(SendDroppedDataPktErr) | \
390 ERR_MASK(SendPioArmLaunchErr) | \
391 ERR_MASK(SendUnexpectedPktNumErr) | \
392 ERR_MASK(SendUnsupportedVLErr) | ERR_MASK(SendBufMisuseErr) | \
393 ERR_MASK(SDmaGenMismatchErr) | ERR_MASK(SDmaOutOfBoundErr) | \
394 ERR_MASK(SDmaTailOutOfBoundErr) | ERR_MASK(SDmaBaseErr) | \
395 ERR_MASK(SDma1stDescErr) | ERR_MASK(SDmaRpyTagErr) | \
396 ERR_MASK(SDmaDwEnErr) | ERR_MASK(SDmaMissingDwErr) | \
397 ERR_MASK(SDmaUnexpDataErr) | \
398 ERR_MASK(IBStatusChanged) | ERR_MASK(InvalidAddrErr) | \
399 ERR_MASK(ResetNegated) | ERR_MASK(HardwareErr) | \
400 ERR_MASK(SDmaDescAddrMisalignErr) | \
401 ERR_MASK(InvalidEEPCmd))
403 /* kr_hwerrclear, kr_hwerrmask, kr_hwerrstatus, bits */
404 #define QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK 0x00000000000000ffULL
405 #define QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT 0
406 #define QLOGIC_IB_HWE_PCIEPOISONEDTLP 0x0000000010000000ULL
407 #define QLOGIC_IB_HWE_PCIECPLTIMEOUT 0x0000000020000000ULL
408 #define QLOGIC_IB_HWE_PCIEBUSPARITYXTLH 0x0000000040000000ULL
409 #define QLOGIC_IB_HWE_PCIEBUSPARITYXADM 0x0000000080000000ULL
410 #define QLOGIC_IB_HWE_PCIEBUSPARITYRADM 0x0000000100000000ULL
411 #define QLOGIC_IB_HWE_COREPLL_FBSLIP 0x0080000000000000ULL
412 #define QLOGIC_IB_HWE_COREPLL_RFSLIP 0x0100000000000000ULL
413 #define QLOGIC_IB_HWE_PCIE1PLLFAILED 0x0400000000000000ULL
414 #define QLOGIC_IB_HWE_PCIE0PLLFAILED 0x0800000000000000ULL
415 #define QLOGIC_IB_HWE_SERDESPLLFAILED 0x1000000000000000ULL
416 /* specific to this chip */
417 #define QLOGIC_IB_HWE_PCIECPLDATAQUEUEERR 0x0000000000000040ULL
418 #define QLOGIC_IB_HWE_PCIECPLHDRQUEUEERR 0x0000000000000080ULL
419 #define QLOGIC_IB_HWE_SDMAMEMREADERR 0x0000000010000000ULL
420 #define QLOGIC_IB_HWE_CLK_UC_PLLNOTLOCKED 0x2000000000000000ULL
421 #define QLOGIC_IB_HWE_PCIESERDESQ0PCLKNOTDETECT 0x0100000000000000ULL
422 #define QLOGIC_IB_HWE_PCIESERDESQ1PCLKNOTDETECT 0x0200000000000000ULL
423 #define QLOGIC_IB_HWE_PCIESERDESQ2PCLKNOTDETECT 0x0400000000000000ULL
424 #define QLOGIC_IB_HWE_PCIESERDESQ3PCLKNOTDETECT 0x0800000000000000ULL
425 #define QLOGIC_IB_HWE_DDSRXEQMEMORYPARITYERR 0x0000008000000000ULL
426 #define QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR 0x0000004000000000ULL
427 #define QLOGIC_IB_HWE_PCIE_UC_OCT0MEMORYPARITYERR 0x0000001000000000ULL
428 #define QLOGIC_IB_HWE_PCIE_UC_OCT1MEMORYPARITYERR 0x0000002000000000ULL
430 #define IBA7220_IBCC_LINKCMD_SHIFT 19
432 /* kr_ibcddrctrl bits */
433 #define IBA7220_IBC_DLIDLMC_MASK 0xFFFFFFFFUL
434 #define IBA7220_IBC_DLIDLMC_SHIFT 32
436 #define IBA7220_IBC_HRTBT_MASK (SYM_RMASK(IBCDDRCtrl, HRTBT_AUTO) | \
437 SYM_RMASK(IBCDDRCtrl, HRTBT_ENB))
438 #define IBA7220_IBC_HRTBT_SHIFT SYM_LSB(IBCDDRCtrl, HRTBT_ENB)
440 #define IBA7220_IBC_LANE_REV_SUPPORTED (1<<8)
441 #define IBA7220_IBC_LREV_MASK 1
442 #define IBA7220_IBC_LREV_SHIFT 8
443 #define IBA7220_IBC_RXPOL_MASK 1
444 #define IBA7220_IBC_RXPOL_SHIFT 7
445 #define IBA7220_IBC_WIDTH_SHIFT 5
446 #define IBA7220_IBC_WIDTH_MASK 0x3
447 #define IBA7220_IBC_WIDTH_1X_ONLY (0 << IBA7220_IBC_WIDTH_SHIFT)
448 #define IBA7220_IBC_WIDTH_4X_ONLY (1 << IBA7220_IBC_WIDTH_SHIFT)
449 #define IBA7220_IBC_WIDTH_AUTONEG (2 << IBA7220_IBC_WIDTH_SHIFT)
450 #define IBA7220_IBC_SPEED_AUTONEG (1 << 1)
451 #define IBA7220_IBC_SPEED_SDR (1 << 2)
452 #define IBA7220_IBC_SPEED_DDR (1 << 3)
453 #define IBA7220_IBC_SPEED_AUTONEG_MASK (0x7 << 1)
454 #define IBA7220_IBC_IBTA_1_2_MASK (1)
456 /* kr_ibcddrstatus */
457 /* link latency shift is 0, don't bother defining */
458 #define IBA7220_DDRSTAT_LINKLAT_MASK 0x3ffffff
460 /* kr_extstatus bits */
461 #define QLOGIC_IB_EXTS_FREQSEL 0x2
462 #define QLOGIC_IB_EXTS_SERDESSEL 0x4
463 #define QLOGIC_IB_EXTS_MEMBIST_ENDTEST 0x0000000000004000
464 #define QLOGIC_IB_EXTS_MEMBIST_DISABLED 0x0000000000008000
466 /* kr_xgxsconfig bits */
467 #define QLOGIC_IB_XGXS_RESET 0x5ULL
468 #define QLOGIC_IB_XGXS_FC_SAFE (1ULL << 63)
470 /* kr_rcvpktledcnt */
471 #define IBA7220_LEDBLINK_ON_SHIFT 32 /* 4ns period on after packet */
472 #define IBA7220_LEDBLINK_OFF_SHIFT 0 /* 4ns period off before next on */
474 #define _QIB_GPIO_SDA_NUM 1
475 #define _QIB_GPIO_SCL_NUM 0
476 #define QIB_TWSI_EEPROM_DEV 0xA2 /* All Production 7220 cards. */
477 #define QIB_TWSI_TEMP_DEV 0x98
479 /* HW counter clock is at 4nsec */
480 #define QIB_7220_PSXMITWAIT_CHECK_RATE 4000
482 #define IBA7220_R_INTRAVAIL_SHIFT 17
483 #define IBA7220_R_PKEY_DIS_SHIFT 34
484 #define IBA7220_R_TAILUPD_SHIFT 35
485 #define IBA7220_R_CTXTCFG_SHIFT 36
487 #define IBA7220_HDRHEAD_PKTINT_SHIFT 32 /* interrupt cnt in upper 32 bits */
490 * the size bits give us 2^N, in KB units. 0 marks as invalid,
491 * and 7 is reserved. We currently use only 2KB and 4KB
493 #define IBA7220_TID_SZ_SHIFT 37 /* shift to 3bit size selector */
494 #define IBA7220_TID_SZ_2K (1UL << IBA7220_TID_SZ_SHIFT) /* 2KB */
495 #define IBA7220_TID_SZ_4K (2UL << IBA7220_TID_SZ_SHIFT) /* 4KB */
496 #define IBA7220_TID_PA_SHIFT 11U /* TID addr in chip stored w/o low bits */
497 #define PBC_7220_VL15_SEND (1ULL << 63) /* pbc; VL15, no credit check */
498 #define PBC_7220_VL15_SEND_CTRL (1ULL << 31) /* control version of same */
500 #define AUTONEG_TRIES 5 /* sequential retries to negotiate DDR */
502 /* packet rate matching delay multiplier */
503 static u8 rate_to_delay[2][2] = {
509 static u8 ib_rate_to_delay[IB_RATE_120_GBPS + 1] = {
510 [IB_RATE_2_5_GBPS] = 8,
511 [IB_RATE_5_GBPS] = 4,
512 [IB_RATE_10_GBPS] = 2,
513 [IB_RATE_20_GBPS] = 1
516 #define IBA7220_LINKSPEED_SHIFT SYM_LSB(IBCStatus, LinkSpeedActive)
517 #define IBA7220_LINKWIDTH_SHIFT SYM_LSB(IBCStatus, LinkWidthActive)
519 /* link training states, from IBC */
520 #define IB_7220_LT_STATE_DISABLED 0x00
521 #define IB_7220_LT_STATE_LINKUP 0x01
522 #define IB_7220_LT_STATE_POLLACTIVE 0x02
523 #define IB_7220_LT_STATE_POLLQUIET 0x03
524 #define IB_7220_LT_STATE_SLEEPDELAY 0x04
525 #define IB_7220_LT_STATE_SLEEPQUIET 0x05
526 #define IB_7220_LT_STATE_CFGDEBOUNCE 0x08
527 #define IB_7220_LT_STATE_CFGRCVFCFG 0x09
528 #define IB_7220_LT_STATE_CFGWAITRMT 0x0a
529 #define IB_7220_LT_STATE_CFGIDLE 0x0b
530 #define IB_7220_LT_STATE_RECOVERRETRAIN 0x0c
531 #define IB_7220_LT_STATE_RECOVERWAITRMT 0x0e
532 #define IB_7220_LT_STATE_RECOVERIDLE 0x0f
534 /* link state machine states from IBC */
535 #define IB_7220_L_STATE_DOWN 0x0
536 #define IB_7220_L_STATE_INIT 0x1
537 #define IB_7220_L_STATE_ARM 0x2
538 #define IB_7220_L_STATE_ACTIVE 0x3
539 #define IB_7220_L_STATE_ACT_DEFER 0x4
541 static const u8 qib_7220_physportstate[0x20] = {
542 [IB_7220_LT_STATE_DISABLED] = IB_PHYSPORTSTATE_DISABLED,
543 [IB_7220_LT_STATE_LINKUP] = IB_PHYSPORTSTATE_LINKUP,
544 [IB_7220_LT_STATE_POLLACTIVE] = IB_PHYSPORTSTATE_POLL,
545 [IB_7220_LT_STATE_POLLQUIET] = IB_PHYSPORTSTATE_POLL,
546 [IB_7220_LT_STATE_SLEEPDELAY] = IB_PHYSPORTSTATE_SLEEP,
547 [IB_7220_LT_STATE_SLEEPQUIET] = IB_PHYSPORTSTATE_SLEEP,
548 [IB_7220_LT_STATE_CFGDEBOUNCE] =
549 IB_PHYSPORTSTATE_CFG_TRAIN,
550 [IB_7220_LT_STATE_CFGRCVFCFG] =
551 IB_PHYSPORTSTATE_CFG_TRAIN,
552 [IB_7220_LT_STATE_CFGWAITRMT] =
553 IB_PHYSPORTSTATE_CFG_TRAIN,
554 [IB_7220_LT_STATE_CFGIDLE] = IB_PHYSPORTSTATE_CFG_TRAIN,
555 [IB_7220_LT_STATE_RECOVERRETRAIN] =
556 IB_PHYSPORTSTATE_LINK_ERR_RECOVER,
557 [IB_7220_LT_STATE_RECOVERWAITRMT] =
558 IB_PHYSPORTSTATE_LINK_ERR_RECOVER,
559 [IB_7220_LT_STATE_RECOVERIDLE] =
560 IB_PHYSPORTSTATE_LINK_ERR_RECOVER,
561 [0x10] = IB_PHYSPORTSTATE_CFG_TRAIN,
562 [0x11] = IB_PHYSPORTSTATE_CFG_TRAIN,
563 [0x12] = IB_PHYSPORTSTATE_CFG_TRAIN,
564 [0x13] = IB_PHYSPORTSTATE_CFG_TRAIN,
565 [0x14] = IB_PHYSPORTSTATE_CFG_TRAIN,
566 [0x15] = IB_PHYSPORTSTATE_CFG_TRAIN,
567 [0x16] = IB_PHYSPORTSTATE_CFG_TRAIN,
568 [0x17] = IB_PHYSPORTSTATE_CFG_TRAIN
571 int qib_special_trigger;
572 module_param_named(special_trigger, qib_special_trigger, int, S_IRUGO);
573 MODULE_PARM_DESC(special_trigger, "Enable SpecialTrigger arm/launch");
575 #define IBCBUSFRSPCPARITYERR HWE_MASK(IBCBusFromSPCParityErr)
576 #define IBCBUSTOSPCPARITYERR HWE_MASK(IBCBusToSPCParityErr)
578 #define SYM_MASK_BIT(regname, fldname, bit) ((u64) \
579 (1ULL << (SYM_LSB(regname, fldname) + (bit))))
581 #define TXEMEMPARITYERR_PIOBUF \
582 SYM_MASK_BIT(HwErrMask, TXEMemParityErrMask, 0)
583 #define TXEMEMPARITYERR_PIOPBC \
584 SYM_MASK_BIT(HwErrMask, TXEMemParityErrMask, 1)
585 #define TXEMEMPARITYERR_PIOLAUNCHFIFO \
586 SYM_MASK_BIT(HwErrMask, TXEMemParityErrMask, 2)
588 #define RXEMEMPARITYERR_RCVBUF \
589 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 0)
590 #define RXEMEMPARITYERR_LOOKUPQ \
591 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 1)
592 #define RXEMEMPARITYERR_EXPTID \
593 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 2)
594 #define RXEMEMPARITYERR_EAGERTID \
595 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 3)
596 #define RXEMEMPARITYERR_FLAGBUF \
597 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 4)
598 #define RXEMEMPARITYERR_DATAINFO \
599 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 5)
600 #define RXEMEMPARITYERR_HDRINFO \
601 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 6)
603 /* 7220 specific hardware errors... */
604 static const struct qib_hwerror_msgs qib_7220_hwerror_msgs[] = {
605 /* generic hardware errors */
606 QLOGIC_IB_HWE_MSG(IBCBUSFRSPCPARITYERR, "QIB2IB Parity"),
607 QLOGIC_IB_HWE_MSG(IBCBUSTOSPCPARITYERR, "IB2QIB Parity"),
609 QLOGIC_IB_HWE_MSG(TXEMEMPARITYERR_PIOBUF,
610 "TXE PIOBUF Memory Parity"),
611 QLOGIC_IB_HWE_MSG(TXEMEMPARITYERR_PIOPBC,
612 "TXE PIOPBC Memory Parity"),
613 QLOGIC_IB_HWE_MSG(TXEMEMPARITYERR_PIOLAUNCHFIFO,
614 "TXE PIOLAUNCHFIFO Memory Parity"),
616 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_RCVBUF,
617 "RXE RCVBUF Memory Parity"),
618 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_LOOKUPQ,
619 "RXE LOOKUPQ Memory Parity"),
620 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_EAGERTID,
621 "RXE EAGERTID Memory Parity"),
622 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_EXPTID,
623 "RXE EXPTID Memory Parity"),
624 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_FLAGBUF,
625 "RXE FLAGBUF Memory Parity"),
626 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_DATAINFO,
627 "RXE DATAINFO Memory Parity"),
628 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_HDRINFO,
629 "RXE HDRINFO Memory Parity"),
631 /* chip-specific hardware errors */
632 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEPOISONEDTLP,
633 "PCIe Poisoned TLP"),
634 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIECPLTIMEOUT,
635 "PCIe completion timeout"),
637 * In practice, it's unlikely wthat we'll see PCIe PLL, or bus
638 * parity or memory parity error failures, because most likely we
639 * won't be able to talk to the core of the chip. Nonetheless, we
640 * might see them, if they are in parts of the PCIe core that aren't
643 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIE1PLLFAILED,
645 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIE0PLLFAILED,
647 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEBUSPARITYXTLH,
648 "PCIe XTLH core parity"),
649 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEBUSPARITYXADM,
650 "PCIe ADM TX core parity"),
651 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEBUSPARITYRADM,
652 "PCIe ADM RX core parity"),
653 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_SERDESPLLFAILED,
655 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIECPLDATAQUEUEERR,
656 "PCIe cpl header queue"),
657 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIECPLHDRQUEUEERR,
658 "PCIe cpl data queue"),
659 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_SDMAMEMREADERR,
660 "Send DMA memory read"),
661 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_CLK_UC_PLLNOTLOCKED,
662 "uC PLL clock not locked"),
663 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIESERDESQ0PCLKNOTDETECT,
664 "PCIe serdes Q0 no clock"),
665 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIESERDESQ1PCLKNOTDETECT,
666 "PCIe serdes Q1 no clock"),
667 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIESERDESQ2PCLKNOTDETECT,
668 "PCIe serdes Q2 no clock"),
669 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIESERDESQ3PCLKNOTDETECT,
670 "PCIe serdes Q3 no clock"),
671 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_DDSRXEQMEMORYPARITYERR,
672 "DDS RXEQ memory parity"),
673 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR,
674 "IB uC memory parity"),
675 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIE_UC_OCT0MEMORYPARITYERR,
676 "PCIe uC oct0 memory parity"),
677 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIE_UC_OCT1MEMORYPARITYERR,
678 "PCIe uC oct1 memory parity"),
681 #define RXE_PARITY (RXEMEMPARITYERR_EAGERTID|RXEMEMPARITYERR_EXPTID)
683 #define QLOGIC_IB_E_PKTERRS (\
684 ERR_MASK(SendPktLenErr) | \
685 ERR_MASK(SendDroppedDataPktErr) | \
686 ERR_MASK(RcvVCRCErr) | \
687 ERR_MASK(RcvICRCErr) | \
688 ERR_MASK(RcvShortPktLenErr) | \
691 /* Convenience for decoding Send DMA errors */
692 #define QLOGIC_IB_E_SDMAERRS ( \
693 ERR_MASK(SDmaGenMismatchErr) | \
694 ERR_MASK(SDmaOutOfBoundErr) | \
695 ERR_MASK(SDmaTailOutOfBoundErr) | ERR_MASK(SDmaBaseErr) | \
696 ERR_MASK(SDma1stDescErr) | ERR_MASK(SDmaRpyTagErr) | \
697 ERR_MASK(SDmaDwEnErr) | ERR_MASK(SDmaMissingDwErr) | \
698 ERR_MASK(SDmaUnexpDataErr) | \
699 ERR_MASK(SDmaDescAddrMisalignErr) | \
700 ERR_MASK(SDmaDisabledErr) | \
701 ERR_MASK(SendBufMisuseErr))
703 /* These are all rcv-related errors which we want to count for stats */
704 #define E_SUM_PKTERRS \
705 (ERR_MASK(RcvHdrLenErr) | ERR_MASK(RcvBadTidErr) | \
706 ERR_MASK(RcvBadVersionErr) | ERR_MASK(RcvHdrErr) | \
707 ERR_MASK(RcvLongPktLenErr) | ERR_MASK(RcvShortPktLenErr) | \
708 ERR_MASK(RcvMaxPktLenErr) | ERR_MASK(RcvMinPktLenErr) | \
709 ERR_MASK(RcvFormatErr) | ERR_MASK(RcvUnsupportedVLErr) | \
710 ERR_MASK(RcvUnexpectedCharErr) | ERR_MASK(RcvEBPErr))
712 /* These are all send-related errors which we want to count for stats */
714 (ERR_MASK(SendPioArmLaunchErr) | ERR_MASK(SendUnexpectedPktNumErr) | \
715 ERR_MASK(SendDroppedDataPktErr) | ERR_MASK(SendDroppedSmpPktErr) | \
716 ERR_MASK(SendMaxPktLenErr) | ERR_MASK(SendUnsupportedVLErr) | \
717 ERR_MASK(SendMinPktLenErr) | ERR_MASK(SendPktLenErr) | \
718 ERR_MASK(InvalidAddrErr))
721 * this is similar to E_SUM_ERRS, but can't ignore armlaunch, don't ignore
722 * errors not related to freeze and cancelling buffers. Can't ignore
723 * armlaunch because could get more while still cleaning up, and need
724 * to cancel those as they happen.
726 #define E_SPKT_ERRS_IGNORE \
727 (ERR_MASK(SendDroppedDataPktErr) | ERR_MASK(SendDroppedSmpPktErr) | \
728 ERR_MASK(SendMaxPktLenErr) | ERR_MASK(SendMinPktLenErr) | \
729 ERR_MASK(SendPktLenErr))
732 * these are errors that can occur when the link changes state while
733 * a packet is being sent or received. This doesn't cover things
734 * like EBP or VCRC that can be the result of a sending having the
735 * link change state, so we receive a "known bad" packet.
737 #define E_SUM_LINK_PKTERRS \
738 (ERR_MASK(SendDroppedDataPktErr) | ERR_MASK(SendDroppedSmpPktErr) | \
739 ERR_MASK(SendMinPktLenErr) | ERR_MASK(SendPktLenErr) | \
740 ERR_MASK(RcvShortPktLenErr) | ERR_MASK(RcvMinPktLenErr) | \
741 ERR_MASK(RcvUnexpectedCharErr))
743 static void autoneg_7220_work(struct work_struct *);
744 static u32 __iomem *qib_7220_getsendbuf(struct qib_pportdata *, u64, u32 *);
747 * Called when we might have an error that is specific to a particular
748 * PIO buffer, and may need to cancel that buffer, so it can be re-used.
749 * because we don't need to force the update of pioavail.
751 static void qib_disarm_7220_senderrbufs(struct qib_pportdata *ppd)
753 unsigned long sbuf[3];
754 struct qib_devdata *dd = ppd->dd;
757 * It's possible that sendbuffererror could have bits set; might
758 * have already done this as a result of hardware error handling.
760 /* read these before writing errorclear */
761 sbuf[0] = qib_read_kreg64(dd, kr_sendbuffererror);
762 sbuf[1] = qib_read_kreg64(dd, kr_sendbuffererror + 1);
763 sbuf[2] = qib_read_kreg64(dd, kr_sendbuffererror + 2);
765 if (sbuf[0] || sbuf[1] || sbuf[2])
766 qib_disarm_piobufs_set(dd, sbuf,
767 dd->piobcnt2k + dd->piobcnt4k);
770 static void qib_7220_txe_recover(struct qib_devdata *dd)
772 qib_devinfo(dd->pcidev, "Recovering from TXE PIO parity error\n");
773 qib_disarm_7220_senderrbufs(dd->pport);
777 * This is called with interrupts disabled and sdma_lock held.
779 static void qib_7220_sdma_sendctrl(struct qib_pportdata *ppd, unsigned op)
781 struct qib_devdata *dd = ppd->dd;
782 u64 set_sendctrl = 0;
783 u64 clr_sendctrl = 0;
785 if (op & QIB_SDMA_SENDCTRL_OP_ENABLE)
786 set_sendctrl |= SYM_MASK(SendCtrl, SDmaEnable);
788 clr_sendctrl |= SYM_MASK(SendCtrl, SDmaEnable);
790 if (op & QIB_SDMA_SENDCTRL_OP_INTENABLE)
791 set_sendctrl |= SYM_MASK(SendCtrl, SDmaIntEnable);
793 clr_sendctrl |= SYM_MASK(SendCtrl, SDmaIntEnable);
795 if (op & QIB_SDMA_SENDCTRL_OP_HALT)
796 set_sendctrl |= SYM_MASK(SendCtrl, SDmaHalt);
798 clr_sendctrl |= SYM_MASK(SendCtrl, SDmaHalt);
800 spin_lock(&dd->sendctrl_lock);
802 dd->sendctrl |= set_sendctrl;
803 dd->sendctrl &= ~clr_sendctrl;
805 qib_write_kreg(dd, kr_sendctrl, dd->sendctrl);
806 qib_write_kreg(dd, kr_scratch, 0);
808 spin_unlock(&dd->sendctrl_lock);
811 static void qib_decode_7220_sdma_errs(struct qib_pportdata *ppd,
812 u64 err, char *buf, size_t blen)
814 static const struct {
818 { ERR_MASK(SDmaGenMismatchErr),
820 { ERR_MASK(SDmaOutOfBoundErr),
822 { ERR_MASK(SDmaTailOutOfBoundErr),
823 "SDmaTailOutOfBound" },
824 { ERR_MASK(SDmaBaseErr),
826 { ERR_MASK(SDma1stDescErr),
828 { ERR_MASK(SDmaRpyTagErr),
830 { ERR_MASK(SDmaDwEnErr),
832 { ERR_MASK(SDmaMissingDwErr),
834 { ERR_MASK(SDmaUnexpDataErr),
836 { ERR_MASK(SDmaDescAddrMisalignErr),
837 "SDmaDescAddrMisalign" },
838 { ERR_MASK(SendBufMisuseErr),
840 { ERR_MASK(SDmaDisabledErr),
846 for (i = 0; i < ARRAY_SIZE(errs); i++) {
847 if (err & errs[i].err)
848 bidx += scnprintf(buf + bidx, blen - bidx,
854 * This is called as part of link down clean up so disarm and flush
855 * all send buffers so that SMP packets can be sent.
857 static void qib_7220_sdma_hw_clean_up(struct qib_pportdata *ppd)
859 /* This will trigger the Abort interrupt */
860 sendctrl_7220_mod(ppd, QIB_SENDCTRL_DISARM_ALL | QIB_SENDCTRL_FLUSH |
861 QIB_SENDCTRL_AVAIL_BLIP);
862 ppd->dd->upd_pio_shadow = 1; /* update our idea of what's busy */
865 static void qib_sdma_7220_setlengen(struct qib_pportdata *ppd)
868 * Set SendDmaLenGen and clear and set
869 * the MSB of the generation count to enable generation checking
870 * and load the internal generation counter.
872 qib_write_kreg(ppd->dd, kr_senddmalengen, ppd->sdma_descq_cnt);
873 qib_write_kreg(ppd->dd, kr_senddmalengen,
874 ppd->sdma_descq_cnt |
875 (1ULL << QIB_7220_SendDmaLenGen_Generation_MSB));
878 static void qib_7220_sdma_hw_start_up(struct qib_pportdata *ppd)
880 qib_sdma_7220_setlengen(ppd);
881 qib_sdma_update_7220_tail(ppd, 0); /* Set SendDmaTail */
882 ppd->sdma_head_dma[0] = 0;
885 #define DISABLES_SDMA ( \
886 ERR_MASK(SDmaDisabledErr) | \
887 ERR_MASK(SDmaBaseErr) | \
888 ERR_MASK(SDmaTailOutOfBoundErr) | \
889 ERR_MASK(SDmaOutOfBoundErr) | \
890 ERR_MASK(SDma1stDescErr) | \
891 ERR_MASK(SDmaRpyTagErr) | \
892 ERR_MASK(SDmaGenMismatchErr) | \
893 ERR_MASK(SDmaDescAddrMisalignErr) | \
894 ERR_MASK(SDmaMissingDwErr) | \
895 ERR_MASK(SDmaDwEnErr))
897 static void sdma_7220_errors(struct qib_pportdata *ppd, u64 errs)
900 struct qib_devdata *dd = ppd->dd;
903 errs &= QLOGIC_IB_E_SDMAERRS;
905 msg = dd->cspec->sdmamsgbuf;
906 qib_decode_7220_sdma_errs(ppd, errs, msg,
907 sizeof(dd->cspec->sdmamsgbuf));
908 spin_lock_irqsave(&ppd->sdma_lock, flags);
910 if (errs & ERR_MASK(SendBufMisuseErr)) {
911 unsigned long sbuf[3];
913 sbuf[0] = qib_read_kreg64(dd, kr_sendbuffererror);
914 sbuf[1] = qib_read_kreg64(dd, kr_sendbuffererror + 1);
915 sbuf[2] = qib_read_kreg64(dd, kr_sendbuffererror + 2);
918 "IB%u:%u SendBufMisuse: %04lx %016lx %016lx\n",
919 ppd->dd->unit, ppd->port, sbuf[2], sbuf[1],
923 if (errs & ERR_MASK(SDmaUnexpDataErr))
924 qib_dev_err(dd, "IB%u:%u SDmaUnexpData\n", ppd->dd->unit,
927 switch (ppd->sdma_state.current_state) {
928 case qib_sdma_state_s00_hw_down:
929 /* not expecting any interrupts */
932 case qib_sdma_state_s10_hw_start_up_wait:
933 /* handled in intr path */
936 case qib_sdma_state_s20_idle:
937 /* not expecting any interrupts */
940 case qib_sdma_state_s30_sw_clean_up_wait:
941 /* not expecting any interrupts */
944 case qib_sdma_state_s40_hw_clean_up_wait:
945 if (errs & ERR_MASK(SDmaDisabledErr))
946 __qib_sdma_process_event(ppd,
947 qib_sdma_event_e50_hw_cleaned);
950 case qib_sdma_state_s50_hw_halt_wait:
951 /* handled in intr path */
954 case qib_sdma_state_s99_running:
955 if (errs & DISABLES_SDMA)
956 __qib_sdma_process_event(ppd,
957 qib_sdma_event_e7220_err_halted);
961 spin_unlock_irqrestore(&ppd->sdma_lock, flags);
965 * Decode the error status into strings, deciding whether to always
966 * print * it or not depending on "normal packet errors" vs everything
967 * else. Return 1 if "real" errors, otherwise 0 if only packet
968 * errors, so caller can decide what to print with the string.
970 static int qib_decode_7220_err(struct qib_devdata *dd, char *buf, size_t blen,
976 if (err & QLOGIC_IB_E_PKTERRS) {
977 if (!(err & ~QLOGIC_IB_E_PKTERRS))
979 if ((err & ERR_MASK(RcvICRCErr)) &&
980 !(err & (ERR_MASK(RcvVCRCErr) | ERR_MASK(RcvEBPErr))))
981 strlcat(buf, "CRC ", blen);
985 if (err & ERR_MASK(RcvHdrLenErr))
986 strlcat(buf, "rhdrlen ", blen);
987 if (err & ERR_MASK(RcvBadTidErr))
988 strlcat(buf, "rbadtid ", blen);
989 if (err & ERR_MASK(RcvBadVersionErr))
990 strlcat(buf, "rbadversion ", blen);
991 if (err & ERR_MASK(RcvHdrErr))
992 strlcat(buf, "rhdr ", blen);
993 if (err & ERR_MASK(SendSpecialTriggerErr))
994 strlcat(buf, "sendspecialtrigger ", blen);
995 if (err & ERR_MASK(RcvLongPktLenErr))
996 strlcat(buf, "rlongpktlen ", blen);
997 if (err & ERR_MASK(RcvMaxPktLenErr))
998 strlcat(buf, "rmaxpktlen ", blen);
999 if (err & ERR_MASK(RcvMinPktLenErr))
1000 strlcat(buf, "rminpktlen ", blen);
1001 if (err & ERR_MASK(SendMinPktLenErr))
1002 strlcat(buf, "sminpktlen ", blen);
1003 if (err & ERR_MASK(RcvFormatErr))
1004 strlcat(buf, "rformaterr ", blen);
1005 if (err & ERR_MASK(RcvUnsupportedVLErr))
1006 strlcat(buf, "runsupvl ", blen);
1007 if (err & ERR_MASK(RcvUnexpectedCharErr))
1008 strlcat(buf, "runexpchar ", blen);
1009 if (err & ERR_MASK(RcvIBFlowErr))
1010 strlcat(buf, "ribflow ", blen);
1011 if (err & ERR_MASK(SendUnderRunErr))
1012 strlcat(buf, "sunderrun ", blen);
1013 if (err & ERR_MASK(SendPioArmLaunchErr))
1014 strlcat(buf, "spioarmlaunch ", blen);
1015 if (err & ERR_MASK(SendUnexpectedPktNumErr))
1016 strlcat(buf, "sunexperrpktnum ", blen);
1017 if (err & ERR_MASK(SendDroppedSmpPktErr))
1018 strlcat(buf, "sdroppedsmppkt ", blen);
1019 if (err & ERR_MASK(SendMaxPktLenErr))
1020 strlcat(buf, "smaxpktlen ", blen);
1021 if (err & ERR_MASK(SendUnsupportedVLErr))
1022 strlcat(buf, "sunsupVL ", blen);
1023 if (err & ERR_MASK(InvalidAddrErr))
1024 strlcat(buf, "invalidaddr ", blen);
1025 if (err & ERR_MASK(RcvEgrFullErr))
1026 strlcat(buf, "rcvegrfull ", blen);
1027 if (err & ERR_MASK(RcvHdrFullErr))
1028 strlcat(buf, "rcvhdrfull ", blen);
1029 if (err & ERR_MASK(IBStatusChanged))
1030 strlcat(buf, "ibcstatuschg ", blen);
1031 if (err & ERR_MASK(RcvIBLostLinkErr))
1032 strlcat(buf, "riblostlink ", blen);
1033 if (err & ERR_MASK(HardwareErr))
1034 strlcat(buf, "hardware ", blen);
1035 if (err & ERR_MASK(ResetNegated))
1036 strlcat(buf, "reset ", blen);
1037 if (err & QLOGIC_IB_E_SDMAERRS)
1038 qib_decode_7220_sdma_errs(dd->pport, err, buf, blen);
1039 if (err & ERR_MASK(InvalidEEPCmd))
1040 strlcat(buf, "invalideepromcmd ", blen);
1045 static void reenable_7220_chase(struct timer_list *t)
1047 struct qib_chippport_specific *cpspec = from_timer(cpspec, t,
1049 struct qib_pportdata *ppd = &cpspec->pportdata;
1051 ppd->cpspec->chase_timer.expires = 0;
1052 qib_set_ib_7220_lstate(ppd, QLOGIC_IB_IBCC_LINKCMD_DOWN,
1053 QLOGIC_IB_IBCC_LINKINITCMD_POLL);
1056 static void handle_7220_chase(struct qib_pportdata *ppd, u64 ibcst)
1061 ibclt = (u8)SYM_FIELD(ibcst, IBCStatus, LinkTrainingState);
1064 * Detect and handle the state chase issue, where we can
1065 * get stuck if we are unlucky on timing on both sides of
1066 * the link. If we are, we disable, set a timer, and
1070 case IB_7220_LT_STATE_CFGRCVFCFG:
1071 case IB_7220_LT_STATE_CFGWAITRMT:
1072 case IB_7220_LT_STATE_TXREVLANES:
1073 case IB_7220_LT_STATE_CFGENH:
1075 if (ppd->cpspec->chase_end &&
1076 time_after(tnow, ppd->cpspec->chase_end)) {
1077 ppd->cpspec->chase_end = 0;
1078 qib_set_ib_7220_lstate(ppd,
1079 QLOGIC_IB_IBCC_LINKCMD_DOWN,
1080 QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
1081 ppd->cpspec->chase_timer.expires = jiffies +
1083 add_timer(&ppd->cpspec->chase_timer);
1084 } else if (!ppd->cpspec->chase_end)
1085 ppd->cpspec->chase_end = tnow + QIB_CHASE_TIME;
1089 ppd->cpspec->chase_end = 0;
1094 static void handle_7220_errors(struct qib_devdata *dd, u64 errs)
1097 u64 ignore_this_time = 0;
1099 struct qib_pportdata *ppd = dd->pport;
1102 /* don't report errors that are masked */
1103 errs &= dd->cspec->errormask;
1104 msg = dd->cspec->emsgbuf;
1106 /* do these first, they are most important */
1107 if (errs & ERR_MASK(HardwareErr))
1108 qib_7220_handle_hwerrors(dd, msg, sizeof(dd->cspec->emsgbuf));
1110 if (errs & QLOGIC_IB_E_SDMAERRS)
1111 sdma_7220_errors(ppd, errs);
1113 if (errs & ~IB_E_BITSEXTANT)
1115 "error interrupt with unknown errors %llx set\n",
1116 (unsigned long long) (errs & ~IB_E_BITSEXTANT));
1118 if (errs & E_SUM_ERRS) {
1119 qib_disarm_7220_senderrbufs(ppd);
1120 if ((errs & E_SUM_LINK_PKTERRS) &&
1121 !(ppd->lflags & QIBL_LINKACTIVE)) {
1123 * This can happen when trying to bring the link
1124 * up, but the IB link changes state at the "wrong"
1125 * time. The IB logic then complains that the packet
1126 * isn't valid. We don't want to confuse people, so
1127 * we just don't print them, except at debug
1129 ignore_this_time = errs & E_SUM_LINK_PKTERRS;
1131 } else if ((errs & E_SUM_LINK_PKTERRS) &&
1132 !(ppd->lflags & QIBL_LINKACTIVE)) {
1134 * This can happen when SMA is trying to bring the link
1135 * up, but the IB link changes state at the "wrong" time.
1136 * The IB logic then complains that the packet isn't
1137 * valid. We don't want to confuse people, so we just
1138 * don't print them, except at debug
1140 ignore_this_time = errs & E_SUM_LINK_PKTERRS;
1143 qib_write_kreg(dd, kr_errclear, errs);
1145 errs &= ~ignore_this_time;
1150 * The ones we mask off are handled specially below
1151 * or above. Also mask SDMADISABLED by default as it
1154 mask = ERR_MASK(IBStatusChanged) |
1155 ERR_MASK(RcvEgrFullErr) | ERR_MASK(RcvHdrFullErr) |
1156 ERR_MASK(HardwareErr) | ERR_MASK(SDmaDisabledErr);
1158 qib_decode_7220_err(dd, msg, sizeof(dd->cspec->emsgbuf), errs & ~mask);
1160 if (errs & E_SUM_PKTERRS)
1161 qib_stats.sps_rcverrs++;
1162 if (errs & E_SUM_ERRS)
1163 qib_stats.sps_txerrs++;
1164 iserr = errs & ~(E_SUM_PKTERRS | QLOGIC_IB_E_PKTERRS |
1165 ERR_MASK(SDmaDisabledErr));
1167 if (errs & ERR_MASK(IBStatusChanged)) {
1170 ibcs = qib_read_kreg64(dd, kr_ibcstatus);
1171 if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG))
1172 handle_7220_chase(ppd, ibcs);
1174 /* Update our picture of width and speed from chip */
1175 ppd->link_width_active =
1176 ((ibcs >> IBA7220_LINKWIDTH_SHIFT) & 1) ?
1177 IB_WIDTH_4X : IB_WIDTH_1X;
1178 ppd->link_speed_active =
1179 ((ibcs >> IBA7220_LINKSPEED_SHIFT) & 1) ?
1180 QIB_IB_DDR : QIB_IB_SDR;
1183 * Since going into a recovery state causes the link state
1184 * to go down and since recovery is transitory, it is better
1185 * if we "miss" ever seeing the link training state go into
1186 * recovery (i.e., ignore this transition for link state
1187 * special handling purposes) without updating lastibcstat.
1189 if (qib_7220_phys_portstate(ibcs) !=
1190 IB_PHYSPORTSTATE_LINK_ERR_RECOVER)
1191 qib_handle_e_ibstatuschanged(ppd, ibcs);
1194 if (errs & ERR_MASK(ResetNegated)) {
1196 "Got reset, requires re-init (unload and reload driver)\n");
1197 dd->flags &= ~QIB_INITTED; /* needs re-init */
1198 /* mark as having had error */
1199 *dd->devstatusp |= QIB_STATUS_HWERROR;
1200 *dd->pport->statusp &= ~QIB_STATUS_IB_CONF;
1204 qib_dev_porterr(dd, ppd->port, "%s error\n", msg);
1206 if (ppd->state_wanted & ppd->lflags)
1207 wake_up_interruptible(&ppd->state_wait);
1210 * If there were hdrq or egrfull errors, wake up any processes
1211 * waiting in poll. We used to try to check which contexts had
1212 * the overflow, but given the cost of that and the chip reads
1213 * to support it, it's better to just wake everybody up if we
1214 * get an overflow; waiters can poll again if it's not them.
1216 if (errs & (ERR_MASK(RcvEgrFullErr) | ERR_MASK(RcvHdrFullErr))) {
1217 qib_handle_urcv(dd, ~0U);
1218 if (errs & ERR_MASK(RcvEgrFullErr))
1219 qib_stats.sps_buffull++;
1221 qib_stats.sps_hdrfull++;
1227 /* enable/disable chip from delivering interrupts */
1228 static void qib_7220_set_intr_state(struct qib_devdata *dd, u32 enable)
1231 if (dd->flags & QIB_BADINTR)
1233 qib_write_kreg(dd, kr_intmask, ~0ULL);
1234 /* force re-interrupt of any pending interrupts. */
1235 qib_write_kreg(dd, kr_intclear, 0ULL);
1237 qib_write_kreg(dd, kr_intmask, 0ULL);
1241 * Try to cleanup as much as possible for anything that might have gone
1242 * wrong while in freeze mode, such as pio buffers being written by user
1243 * processes (causing armlaunch), send errors due to going into freeze mode,
1244 * etc., and try to avoid causing extra interrupts while doing so.
1245 * Forcibly update the in-memory pioavail register copies after cleanup
1246 * because the chip won't do it while in freeze mode (the register values
1247 * themselves are kept correct).
1248 * Make sure that we don't lose any important interrupts by using the chip
1249 * feature that says that writing 0 to a bit in *clear that is set in
1250 * *status will cause an interrupt to be generated again (if allowed by
1252 * This is in chip-specific code because of all of the register accesses,
1253 * even though the details are similar on most chips.
1255 static void qib_7220_clear_freeze(struct qib_devdata *dd)
1257 /* disable error interrupts, to avoid confusion */
1258 qib_write_kreg(dd, kr_errmask, 0ULL);
1260 /* also disable interrupts; errormask is sometimes overwritten */
1261 qib_7220_set_intr_state(dd, 0);
1263 qib_cancel_sends(dd->pport);
1265 /* clear the freeze, and be sure chip saw it */
1266 qib_write_kreg(dd, kr_control, dd->control);
1267 qib_read_kreg32(dd, kr_scratch);
1269 /* force in-memory update now we are out of freeze */
1270 qib_force_pio_avail_update(dd);
1273 * force new interrupt if any hwerr, error or interrupt bits are
1274 * still set, and clear "safe" send packet errors related to freeze
1275 * and cancelling sends. Re-enable error interrupts before possible
1276 * force of re-interrupt on pending interrupts.
1278 qib_write_kreg(dd, kr_hwerrclear, 0ULL);
1279 qib_write_kreg(dd, kr_errclear, E_SPKT_ERRS_IGNORE);
1280 qib_write_kreg(dd, kr_errmask, dd->cspec->errormask);
1281 qib_7220_set_intr_state(dd, 1);
1285 * qib_7220_handle_hwerrors - display hardware errors.
1286 * @dd: the qlogic_ib device
1287 * @msg: the output buffer
1288 * @msgl: the size of the output buffer
1290 * Use same msg buffer as regular errors to avoid excessive stack
1291 * use. Most hardware errors are catastrophic, but for right now,
1292 * we'll print them and continue. We reuse the same message buffer as
1293 * handle_7220_errors() to avoid excessive stack usage.
1295 static void qib_7220_handle_hwerrors(struct qib_devdata *dd, char *msg,
1303 hwerrs = qib_read_kreg64(dd, kr_hwerrstatus);
1306 if (hwerrs == ~0ULL) {
1308 "Read of hardware error status failed (all bits set); ignoring\n");
1311 qib_stats.sps_hwerrs++;
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.
1320 qib_write_kreg(dd, kr_hwerrclear,
1321 hwerrs & ~HWE_MASK(PowerOnBISTFailed));
1323 hwerrs &= dd->cspec->hwerrmask;
1325 if (hwerrs & ~(TXEMEMPARITYERR_PIOBUF | TXEMEMPARITYERR_PIOPBC |
1327 qib_devinfo(dd->pcidev,
1328 "Hardware error: hwerr=0x%llx (cleared)\n",
1329 (unsigned long long) hwerrs);
1331 if (hwerrs & ~IB_HWE_BITSEXTANT)
1333 "hwerror interrupt with unknown errors %llx set\n",
1334 (unsigned long long) (hwerrs & ~IB_HWE_BITSEXTANT));
1336 if (hwerrs & QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR)
1337 qib_sd7220_clr_ibpar(dd);
1339 ctrl = qib_read_kreg32(dd, kr_control);
1340 if ((ctrl & QLOGIC_IB_C_FREEZEMODE) && !dd->diag_client) {
1342 * Parity errors in send memory are recoverable by h/w
1343 * just do housekeeping, exit freeze mode and continue.
1345 if (hwerrs & (TXEMEMPARITYERR_PIOBUF |
1346 TXEMEMPARITYERR_PIOPBC)) {
1347 qib_7220_txe_recover(dd);
1348 hwerrs &= ~(TXEMEMPARITYERR_PIOBUF |
1349 TXEMEMPARITYERR_PIOPBC);
1354 qib_7220_clear_freeze(dd);
1359 if (hwerrs & HWE_MASK(PowerOnBISTFailed)) {
1362 "[Memory BIST test failed, InfiniPath hardware unusable]",
1364 /* ignore from now on, so disable until driver reloaded */
1365 dd->cspec->hwerrmask &= ~HWE_MASK(PowerOnBISTFailed);
1366 qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask);
1369 qib_format_hwerrors(hwerrs, qib_7220_hwerror_msgs,
1370 ARRAY_SIZE(qib_7220_hwerror_msgs), msg, msgl);
1372 bitsmsg = dd->cspec->bitsmsgbuf;
1373 if (hwerrs & (QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK <<
1374 QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT)) {
1375 bits = (u32) ((hwerrs >>
1376 QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT) &
1377 QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK);
1378 snprintf(bitsmsg, sizeof(dd->cspec->bitsmsgbuf),
1379 "[PCIe Mem Parity Errs %x] ", bits);
1380 strlcat(msg, bitsmsg, msgl);
1383 #define _QIB_PLL_FAIL (QLOGIC_IB_HWE_COREPLL_FBSLIP | \
1384 QLOGIC_IB_HWE_COREPLL_RFSLIP)
1386 if (hwerrs & _QIB_PLL_FAIL) {
1388 snprintf(bitsmsg, sizeof(dd->cspec->bitsmsgbuf),
1389 "[PLL failed (%llx), InfiniPath hardware unusable]",
1390 (unsigned long long) hwerrs & _QIB_PLL_FAIL);
1391 strlcat(msg, bitsmsg, msgl);
1392 /* ignore from now on, so disable until driver reloaded */
1393 dd->cspec->hwerrmask &= ~(hwerrs & _QIB_PLL_FAIL);
1394 qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask);
1397 if (hwerrs & QLOGIC_IB_HWE_SERDESPLLFAILED) {
1399 * If it occurs, it is left masked since the eternal
1400 * interface is unused.
1402 dd->cspec->hwerrmask &= ~QLOGIC_IB_HWE_SERDESPLLFAILED;
1403 qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask);
1406 qib_dev_err(dd, "%s hardware error\n", msg);
1408 if (isfatal && !dd->diag_client) {
1410 "Fatal Hardware Error, no longer usable, SN %.16s\n",
1413 * For /sys status file and user programs to print; if no
1414 * trailing brace is copied, we'll know it was truncated.
1417 snprintf(dd->freezemsg, dd->freezelen,
1419 qib_disable_after_error(dd);
1425 * qib_7220_init_hwerrors - enable hardware errors
1426 * @dd: the qlogic_ib device
1428 * now that we have finished initializing everything that might reasonably
1429 * cause a hardware error, and cleared those errors bits as they occur,
1430 * we can enable hardware errors in the mask (potentially enabling
1431 * freeze mode), and enable hardware errors as errors (along with
1432 * everything else) in errormask
1434 static void qib_7220_init_hwerrors(struct qib_devdata *dd)
1439 extsval = qib_read_kreg64(dd, kr_extstatus);
1441 if (!(extsval & (QLOGIC_IB_EXTS_MEMBIST_ENDTEST |
1442 QLOGIC_IB_EXTS_MEMBIST_DISABLED)))
1443 qib_dev_err(dd, "MemBIST did not complete!\n");
1444 if (extsval & QLOGIC_IB_EXTS_MEMBIST_DISABLED)
1445 qib_devinfo(dd->pcidev, "MemBIST is disabled.\n");
1447 val = ~0ULL; /* default to all hwerrors become interrupts, */
1449 val &= ~QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR;
1450 dd->cspec->hwerrmask = val;
1452 qib_write_kreg(dd, kr_hwerrclear, ~HWE_MASK(PowerOnBISTFailed));
1453 qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask);
1456 qib_write_kreg(dd, kr_errclear, ~0ULL);
1457 /* enable errors that are masked, at least this first time. */
1458 qib_write_kreg(dd, kr_errmask, ~0ULL);
1459 dd->cspec->errormask = qib_read_kreg64(dd, kr_errmask);
1460 /* clear any interrupts up to this point (ints still not enabled) */
1461 qib_write_kreg(dd, kr_intclear, ~0ULL);
1465 * Disable and enable the armlaunch error. Used for PIO bandwidth testing
1466 * on chips that are count-based, rather than trigger-based. There is no
1467 * reference counting, but that's also fine, given the intended use.
1468 * Only chip-specific because it's all register accesses
1470 static void qib_set_7220_armlaunch(struct qib_devdata *dd, u32 enable)
1473 qib_write_kreg(dd, kr_errclear, ERR_MASK(SendPioArmLaunchErr));
1474 dd->cspec->errormask |= ERR_MASK(SendPioArmLaunchErr);
1476 dd->cspec->errormask &= ~ERR_MASK(SendPioArmLaunchErr);
1477 qib_write_kreg(dd, kr_errmask, dd->cspec->errormask);
1481 * Formerly took parameter <which> in pre-shifted,
1482 * pre-merged form with LinkCmd and LinkInitCmd
1483 * together, and assuming the zero was NOP.
1485 static void qib_set_ib_7220_lstate(struct qib_pportdata *ppd, u16 linkcmd,
1489 struct qib_devdata *dd = ppd->dd;
1490 unsigned long flags;
1492 if (linitcmd == QLOGIC_IB_IBCC_LINKINITCMD_DISABLE) {
1494 * If we are told to disable, note that so link-recovery
1495 * code does not attempt to bring us back up.
1497 spin_lock_irqsave(&ppd->lflags_lock, flags);
1498 ppd->lflags |= QIBL_IB_LINK_DISABLED;
1499 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
1500 } else if (linitcmd || linkcmd == QLOGIC_IB_IBCC_LINKCMD_DOWN) {
1502 * Any other linkinitcmd will lead to LINKDOWN and then
1503 * to INIT (if all is well), so clear flag to let
1504 * link-recovery code attempt to bring us back up.
1506 spin_lock_irqsave(&ppd->lflags_lock, flags);
1507 ppd->lflags &= ~QIBL_IB_LINK_DISABLED;
1508 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
1511 mod_wd = (linkcmd << IBA7220_IBCC_LINKCMD_SHIFT) |
1512 (linitcmd << QLOGIC_IB_IBCC_LINKINITCMD_SHIFT);
1514 qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl | mod_wd);
1515 /* write to chip to prevent back-to-back writes of ibc reg */
1516 qib_write_kreg(dd, kr_scratch, 0);
1520 * All detailed interaction with the SerDes has been moved to qib_sd7220.c
1522 * The portion of IBA7220-specific bringup_serdes() that actually deals with
1523 * registers and memory within the SerDes itself is qib_sd7220_init().
1527 * qib_7220_bringup_serdes - bring up the serdes
1528 * @ppd: physical port on the qlogic_ib device
1530 static int qib_7220_bringup_serdes(struct qib_pportdata *ppd)
1532 struct qib_devdata *dd = ppd->dd;
1533 u64 val, prev_val, guid, ibc;
1536 /* Put IBC in reset, sends disabled */
1537 dd->control &= ~QLOGIC_IB_C_LINKENABLE;
1538 qib_write_kreg(dd, kr_control, 0ULL);
1540 if (qib_compat_ddr_negotiate) {
1541 ppd->cpspec->ibdeltainprog = 1;
1542 ppd->cpspec->ibsymsnap = read_7220_creg32(dd, cr_ibsymbolerr);
1543 ppd->cpspec->iblnkerrsnap =
1544 read_7220_creg32(dd, cr_iblinkerrrecov);
1547 /* flowcontrolwatermark is in units of KBytes */
1548 ibc = 0x5ULL << SYM_LSB(IBCCtrl, FlowCtrlWaterMark);
1550 * How often flowctrl sent. More or less in usecs; balance against
1551 * watermark value, so that in theory senders always get a flow
1552 * control update in time to not let the IB link go idle.
1554 ibc |= 0x3ULL << SYM_LSB(IBCCtrl, FlowCtrlPeriod);
1555 /* max error tolerance */
1556 ibc |= 0xfULL << SYM_LSB(IBCCtrl, PhyerrThreshold);
1557 /* use "real" buffer space for */
1558 ibc |= 4ULL << SYM_LSB(IBCCtrl, CreditScale);
1559 /* IB credit flow control. */
1560 ibc |= 0xfULL << SYM_LSB(IBCCtrl, OverrunThreshold);
1562 * set initial max size pkt IBC will send, including ICRC; it's the
1563 * PIO buffer size in dwords, less 1; also see qib_set_mtu()
1565 ibc |= ((u64)(ppd->ibmaxlen >> 2) + 1) << SYM_LSB(IBCCtrl, MaxPktLen);
1566 ppd->cpspec->ibcctrl = ibc; /* without linkcmd or linkinitcmd! */
1568 /* initially come up waiting for TS1, without sending anything. */
1569 val = ppd->cpspec->ibcctrl | (QLOGIC_IB_IBCC_LINKINITCMD_DISABLE <<
1570 QLOGIC_IB_IBCC_LINKINITCMD_SHIFT);
1571 qib_write_kreg(dd, kr_ibcctrl, val);
1573 if (!ppd->cpspec->ibcddrctrl) {
1574 /* not on re-init after reset */
1575 ppd->cpspec->ibcddrctrl = qib_read_kreg64(dd, kr_ibcddrctrl);
1577 if (ppd->link_speed_enabled == (QIB_IB_SDR | QIB_IB_DDR))
1578 ppd->cpspec->ibcddrctrl |=
1579 IBA7220_IBC_SPEED_AUTONEG_MASK |
1580 IBA7220_IBC_IBTA_1_2_MASK;
1582 ppd->cpspec->ibcddrctrl |=
1583 ppd->link_speed_enabled == QIB_IB_DDR ?
1584 IBA7220_IBC_SPEED_DDR : IBA7220_IBC_SPEED_SDR;
1585 if ((ppd->link_width_enabled & (IB_WIDTH_1X | IB_WIDTH_4X)) ==
1586 (IB_WIDTH_1X | IB_WIDTH_4X))
1587 ppd->cpspec->ibcddrctrl |= IBA7220_IBC_WIDTH_AUTONEG;
1589 ppd->cpspec->ibcddrctrl |=
1590 ppd->link_width_enabled == IB_WIDTH_4X ?
1591 IBA7220_IBC_WIDTH_4X_ONLY :
1592 IBA7220_IBC_WIDTH_1X_ONLY;
1594 /* always enable these on driver reload, not sticky */
1595 ppd->cpspec->ibcddrctrl |=
1596 IBA7220_IBC_RXPOL_MASK << IBA7220_IBC_RXPOL_SHIFT;
1597 ppd->cpspec->ibcddrctrl |=
1598 IBA7220_IBC_HRTBT_MASK << IBA7220_IBC_HRTBT_SHIFT;
1600 /* enable automatic lane reversal detection for receive */
1601 ppd->cpspec->ibcddrctrl |= IBA7220_IBC_LANE_REV_SUPPORTED;
1603 /* write to chip to prevent back-to-back writes of ibc reg */
1604 qib_write_kreg(dd, kr_scratch, 0);
1606 qib_write_kreg(dd, kr_ibcddrctrl, ppd->cpspec->ibcddrctrl);
1607 qib_write_kreg(dd, kr_scratch, 0);
1609 qib_write_kreg(dd, kr_ncmodectrl, 0Ull);
1610 qib_write_kreg(dd, kr_scratch, 0);
1612 ret = qib_sd7220_init(dd);
1614 val = qib_read_kreg64(dd, kr_xgxs_cfg);
1616 val |= QLOGIC_IB_XGXS_FC_SAFE;
1617 if (val != prev_val) {
1618 qib_write_kreg(dd, kr_xgxs_cfg, val);
1619 qib_read_kreg32(dd, kr_scratch);
1621 if (val & QLOGIC_IB_XGXS_RESET)
1622 val &= ~QLOGIC_IB_XGXS_RESET;
1623 if (val != prev_val)
1624 qib_write_kreg(dd, kr_xgxs_cfg, val);
1626 /* first time through, set port guid */
1628 ppd->guid = dd->base_guid;
1629 guid = be64_to_cpu(ppd->guid);
1631 qib_write_kreg(dd, kr_hrtbt_guid, guid);
1633 dd->control |= QLOGIC_IB_C_LINKENABLE;
1634 qib_write_kreg(dd, kr_control, dd->control);
1636 /* write to chip to prevent back-to-back writes of ibc reg */
1637 qib_write_kreg(dd, kr_scratch, 0);
1642 * qib_7220_quiet_serdes - set serdes to txidle
1643 * @ppd: physical port of the qlogic_ib device
1644 * Called when driver is being unloaded
1646 static void qib_7220_quiet_serdes(struct qib_pportdata *ppd)
1649 struct qib_devdata *dd = ppd->dd;
1650 unsigned long flags;
1653 dd->control &= ~QLOGIC_IB_C_LINKENABLE;
1654 qib_write_kreg(dd, kr_control,
1655 dd->control | QLOGIC_IB_C_FREEZEMODE);
1657 ppd->cpspec->chase_end = 0;
1658 if (ppd->cpspec->chase_timer.function) /* if initted */
1659 del_timer_sync(&ppd->cpspec->chase_timer);
1661 if (ppd->cpspec->ibsymdelta || ppd->cpspec->iblnkerrdelta ||
1662 ppd->cpspec->ibdeltainprog) {
1665 /* enable counter writes */
1666 diagc = qib_read_kreg64(dd, kr_hwdiagctrl);
1667 qib_write_kreg(dd, kr_hwdiagctrl,
1668 diagc | SYM_MASK(HwDiagCtrl, CounterWrEnable));
1670 if (ppd->cpspec->ibsymdelta || ppd->cpspec->ibdeltainprog) {
1671 val = read_7220_creg32(dd, cr_ibsymbolerr);
1672 if (ppd->cpspec->ibdeltainprog)
1673 val -= val - ppd->cpspec->ibsymsnap;
1674 val -= ppd->cpspec->ibsymdelta;
1675 write_7220_creg(dd, cr_ibsymbolerr, val);
1677 if (ppd->cpspec->iblnkerrdelta || ppd->cpspec->ibdeltainprog) {
1678 val = read_7220_creg32(dd, cr_iblinkerrrecov);
1679 if (ppd->cpspec->ibdeltainprog)
1680 val -= val - ppd->cpspec->iblnkerrsnap;
1681 val -= ppd->cpspec->iblnkerrdelta;
1682 write_7220_creg(dd, cr_iblinkerrrecov, val);
1685 /* and disable counter writes */
1686 qib_write_kreg(dd, kr_hwdiagctrl, diagc);
1688 qib_set_ib_7220_lstate(ppd, 0, QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
1690 spin_lock_irqsave(&ppd->lflags_lock, flags);
1691 ppd->lflags &= ~QIBL_IB_AUTONEG_INPROG;
1692 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
1693 wake_up(&ppd->cpspec->autoneg_wait);
1694 cancel_delayed_work_sync(&ppd->cpspec->autoneg_work);
1696 shutdown_7220_relock_poll(ppd->dd);
1697 val = qib_read_kreg64(ppd->dd, kr_xgxs_cfg);
1698 val |= QLOGIC_IB_XGXS_RESET;
1699 qib_write_kreg(ppd->dd, kr_xgxs_cfg, val);
1703 * qib_setup_7220_setextled - set the state of the two external LEDs
1704 * @dd: the qlogic_ib device
1705 * @on: whether the link is up or not
1707 * The exact combo of LEDs if on is true is determined by looking
1710 * These LEDs indicate the physical and logical state of IB link.
1711 * For this chip (at least with recommended board pinouts), LED1
1712 * is Yellow (logical state) and LED2 is Green (physical state),
1714 * Note: We try to match the Mellanox HCA LED behavior as best
1715 * we can. Green indicates physical link state is OK (something is
1716 * plugged in, and we can train).
1717 * Amber indicates the link is logically up (ACTIVE).
1718 * Mellanox further blinks the amber LED to indicate data packet
1719 * activity, but we have no hardware support for that, so it would
1720 * require waking up every 10-20 msecs and checking the counters
1721 * on the chip, and then turning the LED off if appropriate. That's
1722 * visible overhead, so not something we will do.
1725 static void qib_setup_7220_setextled(struct qib_pportdata *ppd, u32 on)
1727 struct qib_devdata *dd = ppd->dd;
1728 u64 extctl, ledblink = 0, val, lst, ltst;
1729 unsigned long flags;
1732 * The diags use the LED to indicate diag info, so we leave
1733 * the external LED alone when the diags are running.
1735 if (dd->diag_client)
1738 if (ppd->led_override) {
1739 ltst = (ppd->led_override & QIB_LED_PHYS) ?
1740 IB_PHYSPORTSTATE_LINKUP : IB_PHYSPORTSTATE_DISABLED,
1741 lst = (ppd->led_override & QIB_LED_LOG) ?
1742 IB_PORT_ACTIVE : IB_PORT_DOWN;
1744 val = qib_read_kreg64(dd, kr_ibcstatus);
1745 ltst = qib_7220_phys_portstate(val);
1746 lst = qib_7220_iblink_state(val);
1752 spin_lock_irqsave(&dd->cspec->gpio_lock, flags);
1753 extctl = dd->cspec->extctrl & ~(SYM_MASK(EXTCtrl, LEDPriPortGreenOn) |
1754 SYM_MASK(EXTCtrl, LEDPriPortYellowOn));
1755 if (ltst == IB_PHYSPORTSTATE_LINKUP) {
1756 extctl |= SYM_MASK(EXTCtrl, LEDPriPortGreenOn);
1758 * counts are in chip clock (4ns) periods.
1759 * This is 1/16 sec (66.6ms) on,
1760 * 3/16 sec (187.5 ms) off, with packets rcvd
1762 ledblink = ((66600 * 1000UL / 4) << IBA7220_LEDBLINK_ON_SHIFT)
1763 | ((187500 * 1000UL / 4) << IBA7220_LEDBLINK_OFF_SHIFT);
1765 if (lst == IB_PORT_ACTIVE)
1766 extctl |= SYM_MASK(EXTCtrl, LEDPriPortYellowOn);
1767 dd->cspec->extctrl = extctl;
1768 qib_write_kreg(dd, kr_extctrl, extctl);
1769 spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags);
1771 if (ledblink) /* blink the LED on packet receive */
1772 qib_write_kreg(dd, kr_rcvpktledcnt, ledblink);
1776 * qib_setup_7220_cleanup - clean up any per-chip chip-specific stuff
1777 * @dd: the qlogic_ib device
1779 * This is called during driver unload.
1782 static void qib_setup_7220_cleanup(struct qib_devdata *dd)
1785 kfree(dd->cspec->cntrs);
1786 kfree(dd->cspec->portcntrs);
1790 * This is only called for SDmaInt.
1791 * SDmaDisabled is handled on the error path.
1793 static void sdma_7220_intr(struct qib_pportdata *ppd, u64 istat)
1795 unsigned long flags;
1797 spin_lock_irqsave(&ppd->sdma_lock, flags);
1799 switch (ppd->sdma_state.current_state) {
1800 case qib_sdma_state_s00_hw_down:
1803 case qib_sdma_state_s10_hw_start_up_wait:
1804 __qib_sdma_process_event(ppd, qib_sdma_event_e20_hw_started);
1807 case qib_sdma_state_s20_idle:
1810 case qib_sdma_state_s30_sw_clean_up_wait:
1813 case qib_sdma_state_s40_hw_clean_up_wait:
1816 case qib_sdma_state_s50_hw_halt_wait:
1817 __qib_sdma_process_event(ppd, qib_sdma_event_e60_hw_halted);
1820 case qib_sdma_state_s99_running:
1821 /* too chatty to print here */
1822 __qib_sdma_intr(ppd);
1825 spin_unlock_irqrestore(&ppd->sdma_lock, flags);
1828 static void qib_wantpiobuf_7220_intr(struct qib_devdata *dd, u32 needint)
1830 unsigned long flags;
1832 spin_lock_irqsave(&dd->sendctrl_lock, flags);
1834 if (!(dd->sendctrl & SYM_MASK(SendCtrl, SendBufAvailUpd)))
1837 * blip the availupd off, next write will be on, so
1838 * we ensure an avail update, regardless of threshold or
1839 * buffers becoming free, whenever we want an interrupt
1841 qib_write_kreg(dd, kr_sendctrl, dd->sendctrl &
1842 ~SYM_MASK(SendCtrl, SendBufAvailUpd));
1843 qib_write_kreg(dd, kr_scratch, 0ULL);
1844 dd->sendctrl |= SYM_MASK(SendCtrl, SendIntBufAvail);
1846 dd->sendctrl &= ~SYM_MASK(SendCtrl, SendIntBufAvail);
1847 qib_write_kreg(dd, kr_sendctrl, dd->sendctrl);
1848 qib_write_kreg(dd, kr_scratch, 0ULL);
1850 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
1854 * Handle errors and unusual events first, separate function
1855 * to improve cache hits for fast path interrupt handling.
1857 static noinline void unlikely_7220_intr(struct qib_devdata *dd, u64 istat)
1859 if (unlikely(istat & ~QLOGIC_IB_I_BITSEXTANT))
1861 "interrupt with unknown interrupts %Lx set\n",
1862 istat & ~QLOGIC_IB_I_BITSEXTANT);
1864 if (istat & QLOGIC_IB_I_GPIO) {
1868 * Boards for this chip currently don't use GPIO interrupts,
1869 * so clear by writing GPIOstatus to GPIOclear, and complain
1870 * to alert developer. To avoid endless repeats, clear
1871 * the bits in the mask, since there is some kind of
1872 * programming error or chip problem.
1874 gpiostatus = qib_read_kreg32(dd, kr_gpio_status);
1876 * In theory, writing GPIOstatus to GPIOclear could
1877 * have a bad side-effect on some diagnostic that wanted
1878 * to poll for a status-change, but the various shadows
1879 * make that problematic at best. Diags will just suppress
1880 * all GPIO interrupts during such tests.
1882 qib_write_kreg(dd, kr_gpio_clear, gpiostatus);
1885 const u32 mask = qib_read_kreg32(dd, kr_gpio_mask);
1886 u32 gpio_irq = mask & gpiostatus;
1889 * A bit set in status and (chip) Mask register
1890 * would cause an interrupt. Since we are not
1891 * expecting any, report it. Also check that the
1892 * chip reflects our shadow, report issues,
1893 * and refresh from the shadow.
1896 * Clear any troublemakers, and update chip
1899 dd->cspec->gpio_mask &= ~gpio_irq;
1900 qib_write_kreg(dd, kr_gpio_mask, dd->cspec->gpio_mask);
1904 if (istat & QLOGIC_IB_I_ERROR) {
1907 qib_stats.sps_errints++;
1908 estat = qib_read_kreg64(dd, kr_errstatus);
1910 qib_devinfo(dd->pcidev,
1911 "error interrupt (%Lx), but no error bits set!\n",
1914 handle_7220_errors(dd, estat);
1918 static irqreturn_t qib_7220intr(int irq, void *data)
1920 struct qib_devdata *dd = data;
1927 if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT) {
1929 * This return value is not great, but we do not want the
1930 * interrupt core code to remove our interrupt handler
1931 * because we don't appear to be handling an interrupt
1932 * during a chip reset.
1938 istat = qib_read_kreg64(dd, kr_intstatus);
1940 if (unlikely(!istat)) {
1941 ret = IRQ_NONE; /* not our interrupt, or already handled */
1944 if (unlikely(istat == -1)) {
1945 qib_bad_intrstatus(dd);
1946 /* don't know if it was our interrupt or not */
1951 this_cpu_inc(*dd->int_counter);
1952 if (unlikely(istat & (~QLOGIC_IB_I_BITSEXTANT |
1953 QLOGIC_IB_I_GPIO | QLOGIC_IB_I_ERROR)))
1954 unlikely_7220_intr(dd, istat);
1957 * Clear the interrupt bits we found set, relatively early, so we
1958 * "know" know the chip will have seen this by the time we process
1959 * the queue, and will re-interrupt if necessary. The processor
1960 * itself won't take the interrupt again until we return.
1962 qib_write_kreg(dd, kr_intclear, istat);
1965 * Handle kernel receive queues before checking for pio buffers
1966 * available since receives can overflow; piobuf waiters can afford
1967 * a few extra cycles, since they were waiting anyway.
1970 ((QLOGIC_IB_I_RCVAVAIL_MASK << QLOGIC_IB_I_RCVAVAIL_SHIFT) |
1971 (QLOGIC_IB_I_RCVURG_MASK << QLOGIC_IB_I_RCVURG_SHIFT));
1973 rmask = (1ULL << QLOGIC_IB_I_RCVAVAIL_SHIFT) |
1974 (1ULL << QLOGIC_IB_I_RCVURG_SHIFT);
1975 for (i = 0; i < dd->first_user_ctxt; i++) {
1976 if (ctxtrbits & rmask) {
1977 ctxtrbits &= ~rmask;
1978 qib_kreceive(dd->rcd[i], NULL, NULL);
1984 (ctxtrbits >> QLOGIC_IB_I_RCVAVAIL_SHIFT) |
1985 (ctxtrbits >> QLOGIC_IB_I_RCVURG_SHIFT);
1986 qib_handle_urcv(dd, ctxtrbits);
1990 /* only call for SDmaInt */
1991 if (istat & QLOGIC_IB_I_SDMAINT)
1992 sdma_7220_intr(dd->pport, istat);
1994 if ((istat & QLOGIC_IB_I_SPIOBUFAVAIL) && (dd->flags & QIB_INITTED))
1995 qib_ib_piobufavail(dd);
2003 * Set up our chip-specific interrupt handler.
2004 * The interrupt type has already been setup, so
2005 * we just need to do the registration and error checking.
2006 * If we are using MSI interrupts, we may fall back to
2007 * INTx later, if the interrupt handler doesn't get called
2008 * within 1/2 second (see verify_interrupt()).
2010 static void qib_setup_7220_interrupt(struct qib_devdata *dd)
2014 ret = pci_request_irq(dd->pcidev, 0, qib_7220intr, NULL, dd,
2017 qib_dev_err(dd, "Couldn't setup %s interrupt (irq=%d): %d\n",
2018 dd->pcidev->msi_enabled ? "MSI" : "INTx",
2019 pci_irq_vector(dd->pcidev, 0), ret);
2023 * qib_7220_boardname - fill in the board name
2024 * @dd: the qlogic_ib device
2026 * info is based on the board revision register
2028 static void qib_7220_boardname(struct qib_devdata *dd)
2032 boardid = SYM_FIELD(dd->revision, Revision,
2037 dd->boardname = "InfiniPath_QLE7240";
2040 dd->boardname = "InfiniPath_QLE7280";
2043 qib_dev_err(dd, "Unknown 7220 board with ID %u\n", boardid);
2044 dd->boardname = "Unknown_InfiniPath_7220";
2048 if (dd->majrev != 5 || !dd->minrev || dd->minrev > 2)
2050 "Unsupported InfiniPath hardware revision %u.%u!\n",
2051 dd->majrev, dd->minrev);
2053 snprintf(dd->boardversion, sizeof(dd->boardversion),
2054 "ChipABI %u.%u, %s, InfiniPath%u %u.%u, SW Compat %u\n",
2055 QIB_CHIP_VERS_MAJ, QIB_CHIP_VERS_MIN, dd->boardname,
2056 (unsigned int)SYM_FIELD(dd->revision, Revision_R, Arch),
2057 dd->majrev, dd->minrev,
2058 (unsigned int)SYM_FIELD(dd->revision, Revision_R, SW));
2062 * This routine sleeps, so it can only be called from user context, not
2063 * from interrupt context.
2065 static int qib_setup_7220_reset(struct qib_devdata *dd)
2071 u8 int_line, clinesz;
2072 unsigned long flags;
2074 qib_pcie_getcmd(dd, &cmdval, &int_line, &clinesz);
2076 /* Use dev_err so it shows up in logs, etc. */
2077 qib_dev_err(dd, "Resetting InfiniPath unit %u\n", dd->unit);
2079 /* no interrupts till re-initted */
2080 qib_7220_set_intr_state(dd, 0);
2082 dd->pport->cpspec->ibdeltainprog = 0;
2083 dd->pport->cpspec->ibsymdelta = 0;
2084 dd->pport->cpspec->iblnkerrdelta = 0;
2087 * Keep chip from being accessed until we are ready. Use
2088 * writeq() directly, to allow the write even though QIB_PRESENT
2091 dd->flags &= ~(QIB_INITTED | QIB_PRESENT);
2092 /* so we check interrupts work again */
2093 dd->z_int_counter = qib_int_counter(dd);
2094 val = dd->control | QLOGIC_IB_C_RESET;
2095 writeq(val, &dd->kregbase[kr_control]);
2096 mb(); /* prevent compiler reordering around actual reset */
2098 for (i = 1; i <= 5; i++) {
2100 * Allow MBIST, etc. to complete; longer on each retry.
2101 * We sometimes get machine checks from bus timeout if no
2102 * response, so for now, make it *really* long.
2104 msleep(1000 + (1 + i) * 2000);
2106 qib_pcie_reenable(dd, cmdval, int_line, clinesz);
2109 * Use readq directly, so we don't need to mark it as PRESENT
2110 * until we get a successful indication that all is well.
2112 val = readq(&dd->kregbase[kr_revision]);
2113 if (val == dd->revision) {
2114 dd->flags |= QIB_PRESENT; /* it's back */
2115 ret = qib_reinit_intr(dd);
2119 ret = 0; /* failed */
2123 if (qib_pcie_params(dd, dd->lbus_width, NULL))
2125 "Reset failed to setup PCIe or interrupts; continuing anyway\n");
2127 /* hold IBC in reset, no sends, etc till later */
2128 qib_write_kreg(dd, kr_control, 0ULL);
2130 /* clear the reset error, init error/hwerror mask */
2131 qib_7220_init_hwerrors(dd);
2133 /* do setup similar to speed or link-width changes */
2134 if (dd->pport->cpspec->ibcddrctrl & IBA7220_IBC_IBTA_1_2_MASK)
2135 dd->cspec->presets_needed = 1;
2136 spin_lock_irqsave(&dd->pport->lflags_lock, flags);
2137 dd->pport->lflags |= QIBL_IB_FORCE_NOTIFY;
2138 dd->pport->lflags &= ~QIBL_IB_AUTONEG_FAILED;
2139 spin_unlock_irqrestore(&dd->pport->lflags_lock, flags);
2146 * qib_7220_put_tid - write a TID to the chip
2147 * @dd: the qlogic_ib device
2148 * @tidptr: pointer to the expected TID (in chip) to update
2149 * @tidtype: 0 for eager, 1 for expected
2150 * @pa: physical address of in memory buffer; tidinvalid if freeing
2152 static void qib_7220_put_tid(struct qib_devdata *dd, u64 __iomem *tidptr,
2153 u32 type, unsigned long pa)
2155 if (pa != dd->tidinvalid) {
2156 u64 chippa = pa >> IBA7220_TID_PA_SHIFT;
2158 /* paranoia checks */
2159 if (pa != (chippa << IBA7220_TID_PA_SHIFT)) {
2160 qib_dev_err(dd, "Physaddr %lx not 2KB aligned!\n",
2164 if (chippa >= (1UL << IBA7220_TID_SZ_SHIFT)) {
2166 "Physical page address 0x%lx larger than supported\n",
2171 if (type == RCVHQ_RCV_TYPE_EAGER)
2172 chippa |= dd->tidtemplate;
2173 else /* for now, always full 4KB page */
2174 chippa |= IBA7220_TID_SZ_4K;
2182 * qib_7220_clear_tids - clear all TID entries for a ctxt, expected and eager
2183 * @dd: the qlogic_ib device
2186 * clear all TID entries for a ctxt, expected and eager.
2187 * Used from qib_close(). On this chip, TIDs are only 32 bits,
2188 * not 64, but they are still on 64 bit boundaries, so tidbase
2189 * is declared as u64 * for the pointer math, even though we write 32 bits
2191 static void qib_7220_clear_tids(struct qib_devdata *dd,
2192 struct qib_ctxtdata *rcd)
2194 u64 __iomem *tidbase;
2195 unsigned long tidinv;
2199 if (!dd->kregbase || !rcd)
2204 tidinv = dd->tidinvalid;
2205 tidbase = (u64 __iomem *)
2206 ((char __iomem *)(dd->kregbase) +
2208 ctxt * dd->rcvtidcnt * sizeof(*tidbase));
2210 for (i = 0; i < dd->rcvtidcnt; i++)
2211 qib_7220_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EXPECTED,
2214 tidbase = (u64 __iomem *)
2215 ((char __iomem *)(dd->kregbase) +
2217 rcd->rcvegr_tid_base * sizeof(*tidbase));
2219 for (i = 0; i < rcd->rcvegrcnt; i++)
2220 qib_7220_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EAGER,
2225 * qib_7220_tidtemplate - setup constants for TID updates
2226 * @dd: the qlogic_ib device
2228 * We setup stuff that we use a lot, to avoid calculating each time
2230 static void qib_7220_tidtemplate(struct qib_devdata *dd)
2232 if (dd->rcvegrbufsize == 2048)
2233 dd->tidtemplate = IBA7220_TID_SZ_2K;
2234 else if (dd->rcvegrbufsize == 4096)
2235 dd->tidtemplate = IBA7220_TID_SZ_4K;
2240 * qib_init_7220_get_base_info - set chip-specific flags for user code
2241 * @rcd: the qlogic_ib ctxt
2242 * @kbase: qib_base_info pointer
2244 * We set the PCIE flag because the lower bandwidth on PCIe vs
2245 * HyperTransport can affect some user packet algorithims.
2247 static int qib_7220_get_base_info(struct qib_ctxtdata *rcd,
2248 struct qib_base_info *kinfo)
2250 kinfo->spi_runtime_flags |= QIB_RUNTIME_PCIE |
2251 QIB_RUNTIME_NODMA_RTAIL | QIB_RUNTIME_SDMA;
2253 if (rcd->dd->flags & QIB_USE_SPCL_TRIG)
2254 kinfo->spi_runtime_flags |= QIB_RUNTIME_SPECIAL_TRIGGER;
2259 static struct qib_message_header *
2260 qib_7220_get_msgheader(struct qib_devdata *dd, __le32 *rhf_addr)
2262 u32 offset = qib_hdrget_offset(rhf_addr);
2264 return (struct qib_message_header *)
2265 (rhf_addr - dd->rhf_offset + offset);
2268 static void qib_7220_config_ctxts(struct qib_devdata *dd)
2270 unsigned long flags;
2273 nchipctxts = qib_read_kreg32(dd, kr_portcnt);
2274 dd->cspec->numctxts = nchipctxts;
2275 if (qib_n_krcv_queues > 1) {
2276 dd->qpn_mask = 0x3e;
2277 dd->first_user_ctxt = qib_n_krcv_queues * dd->num_pports;
2278 if (dd->first_user_ctxt > nchipctxts)
2279 dd->first_user_ctxt = nchipctxts;
2281 dd->first_user_ctxt = dd->num_pports;
2282 dd->n_krcv_queues = dd->first_user_ctxt;
2284 if (!qib_cfgctxts) {
2285 int nctxts = dd->first_user_ctxt + num_online_cpus();
2289 else if (nctxts <= 9)
2291 else if (nctxts <= nchipctxts)
2292 dd->ctxtcnt = nchipctxts;
2293 } else if (qib_cfgctxts <= nchipctxts)
2294 dd->ctxtcnt = qib_cfgctxts;
2295 if (!dd->ctxtcnt) /* none of the above, set to max */
2296 dd->ctxtcnt = nchipctxts;
2299 * Chip can be configured for 5, 9, or 17 ctxts, and choice
2300 * affects number of eager TIDs per ctxt (1K, 2K, 4K).
2301 * Lock to be paranoid about later motion, etc.
2303 spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags);
2304 if (dd->ctxtcnt > 9)
2305 dd->rcvctrl |= 2ULL << IBA7220_R_CTXTCFG_SHIFT;
2306 else if (dd->ctxtcnt > 5)
2307 dd->rcvctrl |= 1ULL << IBA7220_R_CTXTCFG_SHIFT;
2308 /* else configure for default 5 receive ctxts */
2310 dd->rcvctrl |= 1ULL << QIB_7220_RcvCtrl_RcvQPMapEnable_LSB;
2311 qib_write_kreg(dd, kr_rcvctrl, dd->rcvctrl);
2312 spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags);
2314 /* kr_rcvegrcnt changes based on the number of contexts enabled */
2315 dd->cspec->rcvegrcnt = qib_read_kreg32(dd, kr_rcvegrcnt);
2316 dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt, IBA7220_KRCVEGRCNT);
2319 static int qib_7220_get_ib_cfg(struct qib_pportdata *ppd, int which)
2322 u64 maskr; /* right-justified mask */
2325 case QIB_IB_CFG_LWID_ENB: /* Get allowed Link-width */
2326 ret = ppd->link_width_enabled;
2329 case QIB_IB_CFG_LWID: /* Get currently active Link-width */
2330 ret = ppd->link_width_active;
2333 case QIB_IB_CFG_SPD_ENB: /* Get allowed Link speeds */
2334 ret = ppd->link_speed_enabled;
2337 case QIB_IB_CFG_SPD: /* Get current Link spd */
2338 ret = ppd->link_speed_active;
2341 case QIB_IB_CFG_RXPOL_ENB: /* Get Auto-RX-polarity enable */
2342 lsb = IBA7220_IBC_RXPOL_SHIFT;
2343 maskr = IBA7220_IBC_RXPOL_MASK;
2346 case QIB_IB_CFG_LREV_ENB: /* Get Auto-Lane-reversal enable */
2347 lsb = IBA7220_IBC_LREV_SHIFT;
2348 maskr = IBA7220_IBC_LREV_MASK;
2351 case QIB_IB_CFG_LINKLATENCY:
2352 ret = qib_read_kreg64(ppd->dd, kr_ibcddrstatus)
2353 & IBA7220_DDRSTAT_LINKLAT_MASK;
2356 case QIB_IB_CFG_OP_VLS:
2357 ret = ppd->vls_operational;
2360 case QIB_IB_CFG_VL_HIGH_CAP:
2364 case QIB_IB_CFG_VL_LOW_CAP:
2368 case QIB_IB_CFG_OVERRUN_THRESH: /* IB overrun threshold */
2369 ret = SYM_FIELD(ppd->cpspec->ibcctrl, IBCCtrl,
2373 case QIB_IB_CFG_PHYERR_THRESH: /* IB PHY error threshold */
2374 ret = SYM_FIELD(ppd->cpspec->ibcctrl, IBCCtrl,
2378 case QIB_IB_CFG_LINKDEFAULT: /* IB link default (sleep/poll) */
2379 /* will only take effect when the link state changes */
2380 ret = (ppd->cpspec->ibcctrl &
2381 SYM_MASK(IBCCtrl, LinkDownDefaultState)) ?
2382 IB_LINKINITCMD_SLEEP : IB_LINKINITCMD_POLL;
2385 case QIB_IB_CFG_HRTBT: /* Get Heartbeat off/enable/auto */
2386 lsb = IBA7220_IBC_HRTBT_SHIFT;
2387 maskr = IBA7220_IBC_HRTBT_MASK;
2390 case QIB_IB_CFG_PMA_TICKS:
2392 * 0x00 = 10x link transfer rate or 4 nsec. for 2.5Gbs
2393 * Since the clock is always 250MHz, the value is 1 or 0.
2395 ret = (ppd->link_speed_active == QIB_IB_DDR);
2402 ret = (int)((ppd->cpspec->ibcddrctrl >> lsb) & maskr);
2407 static int qib_7220_set_ib_cfg(struct qib_pportdata *ppd, int which, u32 val)
2409 struct qib_devdata *dd = ppd->dd;
2410 u64 maskr; /* right-justified mask */
2411 int lsb, ret = 0, setforce = 0;
2413 unsigned long flags;
2417 case QIB_IB_CFG_LIDLMC:
2419 * Set LID and LMC. Combined to avoid possible hazard
2420 * caller puts LMC in 16MSbits, DLID in 16LSbits of val
2422 lsb = IBA7220_IBC_DLIDLMC_SHIFT;
2423 maskr = IBA7220_IBC_DLIDLMC_MASK;
2426 case QIB_IB_CFG_LWID_ENB: /* set allowed Link-width */
2428 * As with speed, only write the actual register if
2429 * the link is currently down, otherwise takes effect
2430 * on next link change.
2432 ppd->link_width_enabled = val;
2433 if (!(ppd->lflags & QIBL_LINKDOWN))
2436 * We set the QIBL_IB_FORCE_NOTIFY bit so updown
2437 * will get called because we want update
2438 * link_width_active, and the change may not take
2439 * effect for some time (if we are in POLL), so this
2440 * flag will force the updown routine to be called
2441 * on the next ibstatuschange down interrupt, even
2442 * if it's not an down->up transition.
2444 val--; /* convert from IB to chip */
2445 maskr = IBA7220_IBC_WIDTH_MASK;
2446 lsb = IBA7220_IBC_WIDTH_SHIFT;
2450 case QIB_IB_CFG_SPD_ENB: /* set allowed Link speeds */
2452 * If we turn off IB1.2, need to preset SerDes defaults,
2453 * but not right now. Set a flag for the next time
2454 * we command the link down. As with width, only write the
2455 * actual register if the link is currently down, otherwise
2456 * takes effect on next link change. Since setting is being
2457 * explicitly requested (via MAD or sysfs), clear autoneg
2458 * failure status if speed autoneg is enabled.
2460 ppd->link_speed_enabled = val;
2461 if ((ppd->cpspec->ibcddrctrl & IBA7220_IBC_IBTA_1_2_MASK) &&
2463 dd->cspec->presets_needed = 1;
2464 if (!(ppd->lflags & QIBL_LINKDOWN))
2467 * We set the QIBL_IB_FORCE_NOTIFY bit so updown
2468 * will get called because we want update
2469 * link_speed_active, and the change may not take
2470 * effect for some time (if we are in POLL), so this
2471 * flag will force the updown routine to be called
2472 * on the next ibstatuschange down interrupt, even
2473 * if it's not an down->up transition.
2475 if (val == (QIB_IB_SDR | QIB_IB_DDR)) {
2476 val = IBA7220_IBC_SPEED_AUTONEG_MASK |
2477 IBA7220_IBC_IBTA_1_2_MASK;
2478 spin_lock_irqsave(&ppd->lflags_lock, flags);
2479 ppd->lflags &= ~QIBL_IB_AUTONEG_FAILED;
2480 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
2482 val = val == QIB_IB_DDR ?
2483 IBA7220_IBC_SPEED_DDR : IBA7220_IBC_SPEED_SDR;
2484 maskr = IBA7220_IBC_SPEED_AUTONEG_MASK |
2485 IBA7220_IBC_IBTA_1_2_MASK;
2486 /* IBTA 1.2 mode + speed bits are contiguous */
2487 lsb = SYM_LSB(IBCDDRCtrl, IB_ENHANCED_MODE);
2491 case QIB_IB_CFG_RXPOL_ENB: /* set Auto-RX-polarity enable */
2492 lsb = IBA7220_IBC_RXPOL_SHIFT;
2493 maskr = IBA7220_IBC_RXPOL_MASK;
2496 case QIB_IB_CFG_LREV_ENB: /* set Auto-Lane-reversal enable */
2497 lsb = IBA7220_IBC_LREV_SHIFT;
2498 maskr = IBA7220_IBC_LREV_MASK;
2501 case QIB_IB_CFG_OVERRUN_THRESH: /* IB overrun threshold */
2502 maskr = SYM_FIELD(ppd->cpspec->ibcctrl, IBCCtrl,
2505 ppd->cpspec->ibcctrl &=
2506 ~SYM_MASK(IBCCtrl, OverrunThreshold);
2507 ppd->cpspec->ibcctrl |= (u64) val <<
2508 SYM_LSB(IBCCtrl, OverrunThreshold);
2509 qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl);
2510 qib_write_kreg(dd, kr_scratch, 0);
2514 case QIB_IB_CFG_PHYERR_THRESH: /* IB PHY error threshold */
2515 maskr = SYM_FIELD(ppd->cpspec->ibcctrl, IBCCtrl,
2518 ppd->cpspec->ibcctrl &=
2519 ~SYM_MASK(IBCCtrl, PhyerrThreshold);
2520 ppd->cpspec->ibcctrl |= (u64) val <<
2521 SYM_LSB(IBCCtrl, PhyerrThreshold);
2522 qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl);
2523 qib_write_kreg(dd, kr_scratch, 0);
2527 case QIB_IB_CFG_PKEYS: /* update pkeys */
2528 maskr = (u64) ppd->pkeys[0] | ((u64) ppd->pkeys[1] << 16) |
2529 ((u64) ppd->pkeys[2] << 32) |
2530 ((u64) ppd->pkeys[3] << 48);
2531 qib_write_kreg(dd, kr_partitionkey, maskr);
2534 case QIB_IB_CFG_LINKDEFAULT: /* IB link default (sleep/poll) */
2535 /* will only take effect when the link state changes */
2536 if (val == IB_LINKINITCMD_POLL)
2537 ppd->cpspec->ibcctrl &=
2538 ~SYM_MASK(IBCCtrl, LinkDownDefaultState);
2540 ppd->cpspec->ibcctrl |=
2541 SYM_MASK(IBCCtrl, LinkDownDefaultState);
2542 qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl);
2543 qib_write_kreg(dd, kr_scratch, 0);
2546 case QIB_IB_CFG_MTU: /* update the MTU in IBC */
2548 * Update our housekeeping variables, and set IBC max
2549 * size, same as init code; max IBC is max we allow in
2550 * buffer, less the qword pbc, plus 1 for ICRC, in dwords
2551 * Set even if it's unchanged, print debug message only
2554 val = (ppd->ibmaxlen >> 2) + 1;
2555 ppd->cpspec->ibcctrl &= ~SYM_MASK(IBCCtrl, MaxPktLen);
2556 ppd->cpspec->ibcctrl |= (u64)val << SYM_LSB(IBCCtrl, MaxPktLen);
2557 qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl);
2558 qib_write_kreg(dd, kr_scratch, 0);
2561 case QIB_IB_CFG_LSTATE: /* set the IB link state */
2562 switch (val & 0xffff0000) {
2563 case IB_LINKCMD_DOWN:
2564 lcmd = QLOGIC_IB_IBCC_LINKCMD_DOWN;
2565 if (!ppd->cpspec->ibdeltainprog &&
2566 qib_compat_ddr_negotiate) {
2567 ppd->cpspec->ibdeltainprog = 1;
2568 ppd->cpspec->ibsymsnap =
2569 read_7220_creg32(dd, cr_ibsymbolerr);
2570 ppd->cpspec->iblnkerrsnap =
2571 read_7220_creg32(dd, cr_iblinkerrrecov);
2575 case IB_LINKCMD_ARMED:
2576 lcmd = QLOGIC_IB_IBCC_LINKCMD_ARMED;
2579 case IB_LINKCMD_ACTIVE:
2580 lcmd = QLOGIC_IB_IBCC_LINKCMD_ACTIVE;
2585 qib_dev_err(dd, "bad linkcmd req 0x%x\n", val >> 16);
2588 switch (val & 0xffff) {
2589 case IB_LINKINITCMD_NOP:
2593 case IB_LINKINITCMD_POLL:
2594 licmd = QLOGIC_IB_IBCC_LINKINITCMD_POLL;
2597 case IB_LINKINITCMD_SLEEP:
2598 licmd = QLOGIC_IB_IBCC_LINKINITCMD_SLEEP;
2601 case IB_LINKINITCMD_DISABLE:
2602 licmd = QLOGIC_IB_IBCC_LINKINITCMD_DISABLE;
2603 ppd->cpspec->chase_end = 0;
2605 * stop state chase counter and timer, if running.
2606 * wait forpending timer, but don't clear .data (ppd)!
2608 if (ppd->cpspec->chase_timer.expires) {
2609 del_timer_sync(&ppd->cpspec->chase_timer);
2610 ppd->cpspec->chase_timer.expires = 0;
2616 qib_dev_err(dd, "bad linkinitcmd req 0x%x\n",
2620 qib_set_ib_7220_lstate(ppd, lcmd, licmd);
2622 maskr = IBA7220_IBC_WIDTH_MASK;
2623 lsb = IBA7220_IBC_WIDTH_SHIFT;
2624 tmp = (ppd->cpspec->ibcddrctrl >> lsb) & maskr;
2625 /* If the width active on the chip does not match the
2626 * width in the shadow register, write the new active
2627 * width to the chip.
2628 * We don't have to worry about speed as the speed is taken
2629 * care of by set_7220_ibspeed_fast called by ib_updown.
2631 if (ppd->link_width_enabled-1 != tmp) {
2632 ppd->cpspec->ibcddrctrl &= ~(maskr << lsb);
2633 ppd->cpspec->ibcddrctrl |=
2634 (((u64)(ppd->link_width_enabled-1) & maskr) <<
2636 qib_write_kreg(dd, kr_ibcddrctrl,
2637 ppd->cpspec->ibcddrctrl);
2638 qib_write_kreg(dd, kr_scratch, 0);
2639 spin_lock_irqsave(&ppd->lflags_lock, flags);
2640 ppd->lflags |= QIBL_IB_FORCE_NOTIFY;
2641 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
2645 case QIB_IB_CFG_HRTBT: /* set Heartbeat off/enable/auto */
2646 if (val > IBA7220_IBC_HRTBT_MASK) {
2650 lsb = IBA7220_IBC_HRTBT_SHIFT;
2651 maskr = IBA7220_IBC_HRTBT_MASK;
2658 ppd->cpspec->ibcddrctrl &= ~(maskr << lsb);
2659 ppd->cpspec->ibcddrctrl |= (((u64) val & maskr) << lsb);
2660 qib_write_kreg(dd, kr_ibcddrctrl, ppd->cpspec->ibcddrctrl);
2661 qib_write_kreg(dd, kr_scratch, 0);
2663 spin_lock_irqsave(&ppd->lflags_lock, flags);
2664 ppd->lflags |= QIBL_IB_FORCE_NOTIFY;
2665 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
2671 static int qib_7220_set_loopback(struct qib_pportdata *ppd, const char *what)
2676 if (!strncmp(what, "ibc", 3)) {
2677 ppd->cpspec->ibcctrl |= SYM_MASK(IBCCtrl, Loopback);
2678 val = 0; /* disable heart beat, so link will come up */
2679 qib_devinfo(ppd->dd->pcidev, "Enabling IB%u:%u IBC loopback\n",
2680 ppd->dd->unit, ppd->port);
2681 } else if (!strncmp(what, "off", 3)) {
2682 ppd->cpspec->ibcctrl &= ~SYM_MASK(IBCCtrl, Loopback);
2683 /* enable heart beat again */
2684 val = IBA7220_IBC_HRTBT_MASK << IBA7220_IBC_HRTBT_SHIFT;
2685 qib_devinfo(ppd->dd->pcidev,
2686 "Disabling IB%u:%u IBC loopback (normal)\n",
2687 ppd->dd->unit, ppd->port);
2691 qib_write_kreg(ppd->dd, kr_ibcctrl, ppd->cpspec->ibcctrl);
2692 ddr = ppd->cpspec->ibcddrctrl & ~(IBA7220_IBC_HRTBT_MASK
2693 << IBA7220_IBC_HRTBT_SHIFT);
2694 ppd->cpspec->ibcddrctrl = ddr | val;
2695 qib_write_kreg(ppd->dd, kr_ibcddrctrl,
2696 ppd->cpspec->ibcddrctrl);
2697 qib_write_kreg(ppd->dd, kr_scratch, 0);
2702 static void qib_update_7220_usrhead(struct qib_ctxtdata *rcd, u64 hd,
2703 u32 updegr, u32 egrhd, u32 npkts)
2706 qib_write_ureg(rcd->dd, ur_rcvegrindexhead, egrhd, rcd->ctxt);
2708 qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
2712 static u32 qib_7220_hdrqempty(struct qib_ctxtdata *rcd)
2716 head = qib_read_ureg32(rcd->dd, ur_rcvhdrhead, rcd->ctxt);
2717 if (rcd->rcvhdrtail_kvaddr)
2718 tail = qib_get_rcvhdrtail(rcd);
2720 tail = qib_read_ureg32(rcd->dd, ur_rcvhdrtail, rcd->ctxt);
2721 return head == tail;
2725 * Modify the RCVCTRL register in chip-specific way. This
2726 * is a function because bit positions and (future) register
2727 * location is chip-specifc, but the needed operations are
2728 * generic. <op> is a bit-mask because we often want to
2729 * do multiple modifications.
2731 static void rcvctrl_7220_mod(struct qib_pportdata *ppd, unsigned int op,
2734 struct qib_devdata *dd = ppd->dd;
2736 unsigned long flags;
2738 spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags);
2739 if (op & QIB_RCVCTRL_TAILUPD_ENB)
2740 dd->rcvctrl |= (1ULL << IBA7220_R_TAILUPD_SHIFT);
2741 if (op & QIB_RCVCTRL_TAILUPD_DIS)
2742 dd->rcvctrl &= ~(1ULL << IBA7220_R_TAILUPD_SHIFT);
2743 if (op & QIB_RCVCTRL_PKEY_ENB)
2744 dd->rcvctrl &= ~(1ULL << IBA7220_R_PKEY_DIS_SHIFT);
2745 if (op & QIB_RCVCTRL_PKEY_DIS)
2746 dd->rcvctrl |= (1ULL << IBA7220_R_PKEY_DIS_SHIFT);
2748 mask = (1ULL << dd->ctxtcnt) - 1;
2750 mask = (1ULL << ctxt);
2751 if (op & QIB_RCVCTRL_CTXT_ENB) {
2752 /* always done for specific ctxt */
2753 dd->rcvctrl |= (mask << SYM_LSB(RcvCtrl, PortEnable));
2754 if (!(dd->flags & QIB_NODMA_RTAIL))
2755 dd->rcvctrl |= 1ULL << IBA7220_R_TAILUPD_SHIFT;
2756 /* Write these registers before the context is enabled. */
2757 qib_write_kreg_ctxt(dd, kr_rcvhdrtailaddr, ctxt,
2758 dd->rcd[ctxt]->rcvhdrqtailaddr_phys);
2759 qib_write_kreg_ctxt(dd, kr_rcvhdraddr, ctxt,
2760 dd->rcd[ctxt]->rcvhdrq_phys);
2761 dd->rcd[ctxt]->seq_cnt = 1;
2763 if (op & QIB_RCVCTRL_CTXT_DIS)
2764 dd->rcvctrl &= ~(mask << SYM_LSB(RcvCtrl, PortEnable));
2765 if (op & QIB_RCVCTRL_INTRAVAIL_ENB)
2766 dd->rcvctrl |= (mask << IBA7220_R_INTRAVAIL_SHIFT);
2767 if (op & QIB_RCVCTRL_INTRAVAIL_DIS)
2768 dd->rcvctrl &= ~(mask << IBA7220_R_INTRAVAIL_SHIFT);
2769 qib_write_kreg(dd, kr_rcvctrl, dd->rcvctrl);
2770 if ((op & QIB_RCVCTRL_INTRAVAIL_ENB) && dd->rhdrhead_intr_off) {
2771 /* arm rcv interrupt */
2772 val = qib_read_ureg32(dd, ur_rcvhdrhead, ctxt) |
2773 dd->rhdrhead_intr_off;
2774 qib_write_ureg(dd, ur_rcvhdrhead, val, ctxt);
2776 if (op & QIB_RCVCTRL_CTXT_ENB) {
2778 * Init the context registers also; if we were
2779 * disabled, tail and head should both be zero
2780 * already from the enable, but since we don't
2781 * know, we have to do it explicitly.
2783 val = qib_read_ureg32(dd, ur_rcvegrindextail, ctxt);
2784 qib_write_ureg(dd, ur_rcvegrindexhead, val, ctxt);
2786 val = qib_read_ureg32(dd, ur_rcvhdrtail, ctxt);
2787 dd->rcd[ctxt]->head = val;
2788 /* If kctxt, interrupt on next receive. */
2789 if (ctxt < dd->first_user_ctxt)
2790 val |= dd->rhdrhead_intr_off;
2791 qib_write_ureg(dd, ur_rcvhdrhead, val, ctxt);
2793 if (op & QIB_RCVCTRL_CTXT_DIS) {
2795 qib_write_kreg_ctxt(dd, kr_rcvhdrtailaddr, ctxt, 0);
2796 qib_write_kreg_ctxt(dd, kr_rcvhdraddr, ctxt, 0);
2800 for (i = 0; i < dd->cfgctxts; i++) {
2801 qib_write_kreg_ctxt(dd, kr_rcvhdrtailaddr,
2803 qib_write_kreg_ctxt(dd, kr_rcvhdraddr, i, 0);
2807 spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags);
2811 * Modify the SENDCTRL register in chip-specific way. This
2812 * is a function there may be multiple such registers with
2813 * slightly different layouts. To start, we assume the
2814 * "canonical" register layout of the first chips.
2815 * Chip requires no back-back sendctrl writes, so write
2816 * scratch register after writing sendctrl
2818 static void sendctrl_7220_mod(struct qib_pportdata *ppd, u32 op)
2820 struct qib_devdata *dd = ppd->dd;
2821 u64 tmp_dd_sendctrl;
2822 unsigned long flags;
2824 spin_lock_irqsave(&dd->sendctrl_lock, flags);
2826 /* First the ones that are "sticky", saved in shadow */
2827 if (op & QIB_SENDCTRL_CLEAR)
2829 if (op & QIB_SENDCTRL_SEND_DIS)
2830 dd->sendctrl &= ~SYM_MASK(SendCtrl, SPioEnable);
2831 else if (op & QIB_SENDCTRL_SEND_ENB) {
2832 dd->sendctrl |= SYM_MASK(SendCtrl, SPioEnable);
2833 if (dd->flags & QIB_USE_SPCL_TRIG)
2834 dd->sendctrl |= SYM_MASK(SendCtrl,
2837 if (op & QIB_SENDCTRL_AVAIL_DIS)
2838 dd->sendctrl &= ~SYM_MASK(SendCtrl, SendBufAvailUpd);
2839 else if (op & QIB_SENDCTRL_AVAIL_ENB)
2840 dd->sendctrl |= SYM_MASK(SendCtrl, SendBufAvailUpd);
2842 if (op & QIB_SENDCTRL_DISARM_ALL) {
2845 tmp_dd_sendctrl = dd->sendctrl;
2847 * disarm any that are not yet launched, disabling sends
2848 * and updates until done.
2850 last = dd->piobcnt2k + dd->piobcnt4k;
2852 ~(SYM_MASK(SendCtrl, SPioEnable) |
2853 SYM_MASK(SendCtrl, SendBufAvailUpd));
2854 for (i = 0; i < last; i++) {
2855 qib_write_kreg(dd, kr_sendctrl,
2857 SYM_MASK(SendCtrl, Disarm) | i);
2858 qib_write_kreg(dd, kr_scratch, 0);
2862 tmp_dd_sendctrl = dd->sendctrl;
2864 if (op & QIB_SENDCTRL_FLUSH)
2865 tmp_dd_sendctrl |= SYM_MASK(SendCtrl, Abort);
2866 if (op & QIB_SENDCTRL_DISARM)
2867 tmp_dd_sendctrl |= SYM_MASK(SendCtrl, Disarm) |
2868 ((op & QIB_7220_SendCtrl_DisarmPIOBuf_RMASK) <<
2869 SYM_LSB(SendCtrl, DisarmPIOBuf));
2870 if ((op & QIB_SENDCTRL_AVAIL_BLIP) &&
2871 (dd->sendctrl & SYM_MASK(SendCtrl, SendBufAvailUpd)))
2872 tmp_dd_sendctrl &= ~SYM_MASK(SendCtrl, SendBufAvailUpd);
2874 qib_write_kreg(dd, kr_sendctrl, tmp_dd_sendctrl);
2875 qib_write_kreg(dd, kr_scratch, 0);
2877 if (op & QIB_SENDCTRL_AVAIL_BLIP) {
2878 qib_write_kreg(dd, kr_sendctrl, dd->sendctrl);
2879 qib_write_kreg(dd, kr_scratch, 0);
2882 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
2884 if (op & QIB_SENDCTRL_FLUSH) {
2887 * ensure writes have hit chip, then do a few
2888 * more reads, to allow DMA of pioavail registers
2889 * to occur, so in-memory copy is in sync with
2890 * the chip. Not always safe to sleep.
2892 v = qib_read_kreg32(dd, kr_scratch);
2893 qib_write_kreg(dd, kr_scratch, v);
2894 v = qib_read_kreg32(dd, kr_scratch);
2895 qib_write_kreg(dd, kr_scratch, v);
2896 qib_read_kreg32(dd, kr_scratch);
2901 * qib_portcntr_7220 - read a per-port counter
2902 * @dd: the qlogic_ib device
2903 * @creg: the counter to snapshot
2905 static u64 qib_portcntr_7220(struct qib_pportdata *ppd, u32 reg)
2908 struct qib_devdata *dd = ppd->dd;
2910 /* 0xffff for unimplemented or synthesized counters */
2911 static const u16 xlator[] = {
2912 [QIBPORTCNTR_PKTSEND] = cr_pktsend,
2913 [QIBPORTCNTR_WORDSEND] = cr_wordsend,
2914 [QIBPORTCNTR_PSXMITDATA] = cr_psxmitdatacount,
2915 [QIBPORTCNTR_PSXMITPKTS] = cr_psxmitpktscount,
2916 [QIBPORTCNTR_PSXMITWAIT] = cr_psxmitwaitcount,
2917 [QIBPORTCNTR_SENDSTALL] = cr_sendstall,
2918 [QIBPORTCNTR_PKTRCV] = cr_pktrcv,
2919 [QIBPORTCNTR_PSRCVDATA] = cr_psrcvdatacount,
2920 [QIBPORTCNTR_PSRCVPKTS] = cr_psrcvpktscount,
2921 [QIBPORTCNTR_RCVEBP] = cr_rcvebp,
2922 [QIBPORTCNTR_RCVOVFL] = cr_rcvovfl,
2923 [QIBPORTCNTR_WORDRCV] = cr_wordrcv,
2924 [QIBPORTCNTR_RXDROPPKT] = cr_rxdroppkt,
2925 [QIBPORTCNTR_RXLOCALPHYERR] = cr_rxotherlocalphyerr,
2926 [QIBPORTCNTR_RXVLERR] = cr_rxvlerr,
2927 [QIBPORTCNTR_ERRICRC] = cr_erricrc,
2928 [QIBPORTCNTR_ERRVCRC] = cr_errvcrc,
2929 [QIBPORTCNTR_ERRLPCRC] = cr_errlpcrc,
2930 [QIBPORTCNTR_BADFORMAT] = cr_badformat,
2931 [QIBPORTCNTR_ERR_RLEN] = cr_err_rlen,
2932 [QIBPORTCNTR_IBSYMBOLERR] = cr_ibsymbolerr,
2933 [QIBPORTCNTR_INVALIDRLEN] = cr_invalidrlen,
2934 [QIBPORTCNTR_UNSUPVL] = cr_txunsupvl,
2935 [QIBPORTCNTR_EXCESSBUFOVFL] = cr_excessbufferovfl,
2936 [QIBPORTCNTR_ERRLINK] = cr_errlink,
2937 [QIBPORTCNTR_IBLINKDOWN] = cr_iblinkdown,
2938 [QIBPORTCNTR_IBLINKERRRECOV] = cr_iblinkerrrecov,
2939 [QIBPORTCNTR_LLI] = cr_locallinkintegrityerr,
2940 [QIBPORTCNTR_PSINTERVAL] = cr_psinterval,
2941 [QIBPORTCNTR_PSSTART] = cr_psstart,
2942 [QIBPORTCNTR_PSSTAT] = cr_psstat,
2943 [QIBPORTCNTR_VL15PKTDROP] = cr_vl15droppedpkt,
2944 [QIBPORTCNTR_ERRPKEY] = cr_errpkey,
2945 [QIBPORTCNTR_KHDROVFL] = 0xffff,
2948 if (reg >= ARRAY_SIZE(xlator)) {
2949 qib_devinfo(ppd->dd->pcidev,
2950 "Unimplemented portcounter %u\n", reg);
2955 if (reg == QIBPORTCNTR_KHDROVFL) {
2958 /* sum over all kernel contexts */
2959 for (i = 0; i < dd->first_user_ctxt; i++)
2960 ret += read_7220_creg32(dd, cr_portovfl + i);
2966 * only fast incrementing counters are 64bit; use 32 bit reads to
2967 * avoid two independent reads when on opteron
2969 if ((creg == cr_wordsend || creg == cr_wordrcv ||
2970 creg == cr_pktsend || creg == cr_pktrcv))
2971 ret = read_7220_creg(dd, creg);
2973 ret = read_7220_creg32(dd, creg);
2974 if (creg == cr_ibsymbolerr) {
2975 if (dd->pport->cpspec->ibdeltainprog)
2976 ret -= ret - ppd->cpspec->ibsymsnap;
2977 ret -= dd->pport->cpspec->ibsymdelta;
2978 } else if (creg == cr_iblinkerrrecov) {
2979 if (dd->pport->cpspec->ibdeltainprog)
2980 ret -= ret - ppd->cpspec->iblnkerrsnap;
2981 ret -= dd->pport->cpspec->iblnkerrdelta;
2988 * Device counter names (not port-specific), one line per stat,
2989 * single string. Used by utilities like ipathstats to print the stats
2990 * in a way which works for different versions of drivers, without changing
2991 * the utility. Names need to be 12 chars or less (w/o newline), for proper
2992 * display by utility.
2993 * Non-error counters are first.
2994 * Start of "error" conters is indicated by a leading "E " on the first
2995 * "error" counter, and doesn't count in label length.
2996 * The EgrOvfl list needs to be last so we truncate them at the configured
2997 * context count for the device.
2998 * cntr7220indices contains the corresponding register indices.
3000 static const char cntr7220names[] =
3023 static const size_t cntr7220indices[] = {
3048 * same as cntr7220names and cntr7220indices, but for port-specific counters.
3049 * portcntr7220indices is somewhat complicated by some registers needing
3050 * adjustments of various kinds, and those are ORed with _PORT_VIRT_FLAG
3052 static const char portcntr7220names[] =
3060 "TxDmaDesc\n" /* 7220 and 7322-only */
3061 "E RxDlidFltr\n" /* 7220 and 7322-only */
3084 "RxLclPhyErr\n" /* 7220 and 7322-only */
3085 "RxVL15Drop\n" /* 7220 and 7322-only */
3086 "RxVlErr\n" /* 7220 and 7322-only */
3087 "XcessBufOvfl\n" /* 7220 and 7322-only */
3090 #define _PORT_VIRT_FLAG 0x8000 /* "virtual", need adjustments */
3091 static const size_t portcntr7220indices[] = {
3092 QIBPORTCNTR_PKTSEND | _PORT_VIRT_FLAG,
3094 QIBPORTCNTR_WORDSEND | _PORT_VIRT_FLAG,
3095 QIBPORTCNTR_PKTRCV | _PORT_VIRT_FLAG,
3097 QIBPORTCNTR_WORDRCV | _PORT_VIRT_FLAG,
3098 QIBPORTCNTR_SENDSTALL | _PORT_VIRT_FLAG,
3102 QIBPORTCNTR_IBLINKDOWN | _PORT_VIRT_FLAG,
3103 QIBPORTCNTR_IBLINKERRRECOV | _PORT_VIRT_FLAG,
3104 QIBPORTCNTR_ERRLINK | _PORT_VIRT_FLAG,
3105 QIBPORTCNTR_IBSYMBOLERR | _PORT_VIRT_FLAG,
3106 QIBPORTCNTR_LLI | _PORT_VIRT_FLAG,
3107 QIBPORTCNTR_BADFORMAT | _PORT_VIRT_FLAG,
3108 QIBPORTCNTR_ERR_RLEN | _PORT_VIRT_FLAG,
3109 QIBPORTCNTR_RCVOVFL | _PORT_VIRT_FLAG,
3110 QIBPORTCNTR_RCVEBP | _PORT_VIRT_FLAG,
3112 QIBPORTCNTR_ERRICRC | _PORT_VIRT_FLAG,
3113 QIBPORTCNTR_ERRLPCRC | _PORT_VIRT_FLAG,
3114 QIBPORTCNTR_ERRVCRC | _PORT_VIRT_FLAG,
3115 QIBPORTCNTR_INVALIDRLEN | _PORT_VIRT_FLAG,
3116 QIBPORTCNTR_ERRPKEY | _PORT_VIRT_FLAG,
3117 QIBPORTCNTR_RXDROPPKT | _PORT_VIRT_FLAG,
3123 QIBPORTCNTR_RXLOCALPHYERR | _PORT_VIRT_FLAG,
3124 QIBPORTCNTR_VL15PKTDROP | _PORT_VIRT_FLAG,
3125 QIBPORTCNTR_RXVLERR | _PORT_VIRT_FLAG,
3126 QIBPORTCNTR_EXCESSBUFOVFL | _PORT_VIRT_FLAG,
3129 /* do all the setup to make the counter reads efficient later */
3130 static void init_7220_cntrnames(struct qib_devdata *dd)
3135 for (i = 0, s = (char *)cntr7220names; s && j <= dd->cfgctxts;
3137 /* we always have at least one counter before the egrovfl */
3138 if (!j && !strncmp("Ctxt0EgrOvfl", s + 1, 12))
3140 s = strchr(s + 1, '\n');
3144 dd->cspec->ncntrs = i;
3146 /* full list; size is without terminating null */
3147 dd->cspec->cntrnamelen = sizeof(cntr7220names) - 1;
3149 dd->cspec->cntrnamelen = 1 + s - cntr7220names;
3150 dd->cspec->cntrs = kmalloc_array(dd->cspec->ncntrs, sizeof(u64),
3153 for (i = 0, s = (char *)portcntr7220names; s; i++)
3154 s = strchr(s + 1, '\n');
3155 dd->cspec->nportcntrs = i - 1;
3156 dd->cspec->portcntrnamelen = sizeof(portcntr7220names) - 1;
3157 dd->cspec->portcntrs = kmalloc_array(dd->cspec->nportcntrs,
3162 static u32 qib_read_7220cntrs(struct qib_devdata *dd, loff_t pos, char **namep,
3167 if (!dd->cspec->cntrs) {
3173 *namep = (char *)cntr7220names;
3174 ret = dd->cspec->cntrnamelen;
3176 ret = 0; /* final read after getting everything */
3178 u64 *cntr = dd->cspec->cntrs;
3181 ret = dd->cspec->ncntrs * sizeof(u64);
3182 if (!cntr || pos >= ret) {
3183 /* everything read, or couldn't get memory */
3189 for (i = 0; i < dd->cspec->ncntrs; i++)
3190 *cntr++ = read_7220_creg32(dd, cntr7220indices[i]);
3196 static u32 qib_read_7220portcntrs(struct qib_devdata *dd, loff_t pos, u32 port,
3197 char **namep, u64 **cntrp)
3201 if (!dd->cspec->portcntrs) {
3206 *namep = (char *)portcntr7220names;
3207 ret = dd->cspec->portcntrnamelen;
3209 ret = 0; /* final read after getting everything */
3211 u64 *cntr = dd->cspec->portcntrs;
3212 struct qib_pportdata *ppd = &dd->pport[port];
3215 ret = dd->cspec->nportcntrs * sizeof(u64);
3216 if (!cntr || pos >= ret) {
3217 /* everything read, or couldn't get memory */
3222 for (i = 0; i < dd->cspec->nportcntrs; i++) {
3223 if (portcntr7220indices[i] & _PORT_VIRT_FLAG)
3224 *cntr++ = qib_portcntr_7220(ppd,
3225 portcntr7220indices[i] &
3228 *cntr++ = read_7220_creg32(dd,
3229 portcntr7220indices[i]);
3237 * qib_get_7220_faststats - get word counters from chip before they overflow
3238 * @opaque - contains a pointer to the qlogic_ib device qib_devdata
3240 * This needs more work; in particular, decision on whether we really
3241 * need traffic_wds done the way it is
3242 * called from add_timer
3244 static void qib_get_7220_faststats(struct timer_list *t)
3246 struct qib_devdata *dd = from_timer(dd, t, stats_timer);
3247 struct qib_pportdata *ppd = dd->pport;
3248 unsigned long flags;
3252 * don't access the chip while running diags, or memory diags can
3255 if (!(dd->flags & QIB_INITTED) || dd->diag_client)
3256 /* but re-arm the timer, for diags case; won't hurt other */
3260 * We now try to maintain an activity timer, based on traffic
3261 * exceeding a threshold, so we need to check the word-counts
3262 * even if they are 64-bit.
3264 traffic_wds = qib_portcntr_7220(ppd, cr_wordsend) +
3265 qib_portcntr_7220(ppd, cr_wordrcv);
3266 spin_lock_irqsave(&dd->eep_st_lock, flags);
3267 traffic_wds -= dd->traffic_wds;
3268 dd->traffic_wds += traffic_wds;
3269 spin_unlock_irqrestore(&dd->eep_st_lock, flags);
3271 mod_timer(&dd->stats_timer, jiffies + HZ * ACTIVITY_TIMER);
3275 * If we are using MSI, try to fallback to INTx.
3277 static int qib_7220_intr_fallback(struct qib_devdata *dd)
3282 qib_devinfo(dd->pcidev,
3283 "MSI interrupt not detected, trying INTx interrupts\n");
3287 if (pci_alloc_irq_vectors(dd->pcidev, 1, 1, PCI_IRQ_LEGACY) < 0)
3288 qib_dev_err(dd, "Failed to enable INTx\n");
3289 qib_setup_7220_interrupt(dd);
3294 * Reset the XGXS (between serdes and IBC). Slightly less intrusive
3295 * than resetting the IBC or external link state, and useful in some
3296 * cases to cause some retraining. To do this right, we reset IBC
3299 static void qib_7220_xgxs_reset(struct qib_pportdata *ppd)
3302 struct qib_devdata *dd = ppd->dd;
3304 prev_val = qib_read_kreg64(dd, kr_xgxs_cfg);
3305 val = prev_val | QLOGIC_IB_XGXS_RESET;
3306 prev_val &= ~QLOGIC_IB_XGXS_RESET; /* be sure */
3307 qib_write_kreg(dd, kr_control,
3308 dd->control & ~QLOGIC_IB_C_LINKENABLE);
3309 qib_write_kreg(dd, kr_xgxs_cfg, val);
3310 qib_read_kreg32(dd, kr_scratch);
3311 qib_write_kreg(dd, kr_xgxs_cfg, prev_val);
3312 qib_write_kreg(dd, kr_control, dd->control);
3316 * For this chip, we want to use the same buffer every time
3317 * when we are trying to bring the link up (they are always VL15
3318 * packets). At that link state the packet should always go out immediately
3319 * (or at least be discarded at the tx interface if the link is down).
3320 * If it doesn't, and the buffer isn't available, that means some other
3321 * sender has gotten ahead of us, and is preventing our packet from going
3322 * out. In that case, we flush all packets, and try again. If that still
3323 * fails, we fail the request, and hope things work the next time around.
3325 * We don't need very complicated heuristics on whether the packet had
3326 * time to go out or not, since even at SDR 1X, it goes out in very short
3327 * time periods, covered by the chip reads done here and as part of the
3330 static u32 __iomem *get_7220_link_buf(struct qib_pportdata *ppd, u32 *bnum)
3333 u32 lbuf = ppd->dd->cspec->lastbuf_for_pio;
3335 unsigned long flags;
3338 * always blip to get avail list updated, since it's almost
3339 * always needed, and is fairly cheap.
3341 sendctrl_7220_mod(ppd->dd->pport, QIB_SENDCTRL_AVAIL_BLIP);
3342 qib_read_kreg64(ppd->dd, kr_scratch); /* extra chip flush */
3343 buf = qib_getsendbuf_range(ppd->dd, bnum, lbuf, lbuf);
3347 spin_lock_irqsave(&ppd->sdma_lock, flags);
3348 if (ppd->sdma_state.current_state == qib_sdma_state_s20_idle &&
3349 ppd->sdma_state.current_state != qib_sdma_state_s00_hw_down) {
3350 __qib_sdma_process_event(ppd, qib_sdma_event_e00_go_hw_down);
3354 qib_7220_sdma_hw_clean_up(ppd);
3356 spin_unlock_irqrestore(&ppd->sdma_lock, flags);
3359 qib_read_kreg64(ppd->dd, kr_scratch); /* extra chip flush */
3360 buf = qib_getsendbuf_range(ppd->dd, bnum, lbuf, lbuf);
3367 * This code for non-IBTA-compliant IB speed negotiation is only known to
3368 * work for the SDR to DDR transition, and only between an HCA and a switch
3369 * with recent firmware. It is based on observed heuristics, rather than
3370 * actual knowledge of the non-compliant speed negotiation.
3371 * It has a number of hard-coded fields, since the hope is to rewrite this
3372 * when a spec is available on how the negoation is intended to work.
3374 static void autoneg_7220_sendpkt(struct qib_pportdata *ppd, u32 *hdr,
3375 u32 dcnt, u32 *data)
3379 u32 __iomem *piobuf;
3381 struct qib_devdata *dd = ppd->dd;
3384 pbc = 7 + dcnt + 1; /* 7 dword header, dword data, icrc */
3385 pbc |= PBC_7220_VL15_SEND;
3386 while (!(piobuf = get_7220_link_buf(ppd, &pnum))) {
3391 sendctrl_7220_mod(dd->pport, QIB_SENDCTRL_DISARM_BUF(pnum));
3392 writeq(pbc, piobuf);
3394 qib_pio_copy(piobuf + 2, hdr, 7);
3395 qib_pio_copy(piobuf + 9, data, dcnt);
3396 if (dd->flags & QIB_USE_SPCL_TRIG) {
3397 u32 spcl_off = (pnum >= dd->piobcnt2k) ? 2047 : 1023;
3400 __raw_writel(0xaebecede, piobuf + spcl_off);
3403 qib_sendbuf_done(dd, pnum);
3407 * _start packet gets sent twice at start, _done gets sent twice at end
3409 static void autoneg_7220_send(struct qib_pportdata *ppd, int which)
3411 struct qib_devdata *dd = ppd->dd;
3413 u32 dw, i, hcnt, dcnt, *data;
3414 static u32 hdr[7] = { 0xf002ffff, 0x48ffff, 0x6400abba };
3415 static u32 madpayload_start[0x40] = {
3416 0x1810103, 0x1, 0x0, 0x0, 0x2c90000, 0x2c9, 0x0, 0x0,
3417 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
3418 0x1, 0x1388, 0x15e, 0x1, /* rest 0's */
3420 static u32 madpayload_done[0x40] = {
3421 0x1810103, 0x1, 0x0, 0x0, 0x2c90000, 0x2c9, 0x0, 0x0,
3422 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
3423 0x40000001, 0x1388, 0x15e, /* rest 0's */
3426 dcnt = ARRAY_SIZE(madpayload_start);
3427 hcnt = ARRAY_SIZE(hdr);
3429 /* for maintainability, do it at runtime */
3430 for (i = 0; i < hcnt; i++) {
3431 dw = (__force u32) cpu_to_be32(hdr[i]);
3434 for (i = 0; i < dcnt; i++) {
3435 dw = (__force u32) cpu_to_be32(madpayload_start[i]);
3436 madpayload_start[i] = dw;
3437 dw = (__force u32) cpu_to_be32(madpayload_done[i]);
3438 madpayload_done[i] = dw;
3443 data = which ? madpayload_done : madpayload_start;
3445 autoneg_7220_sendpkt(ppd, hdr, dcnt, data);
3446 qib_read_kreg64(dd, kr_scratch);
3448 autoneg_7220_sendpkt(ppd, hdr, dcnt, data);
3449 qib_read_kreg64(dd, kr_scratch);
3454 * Do the absolute minimum to cause an IB speed change, and make it
3455 * ready, but don't actually trigger the change. The caller will
3456 * do that when ready (if link is in Polling training state, it will
3457 * happen immediately, otherwise when link next goes down)
3459 * This routine should only be used as part of the DDR autonegotation
3460 * code for devices that are not compliant with IB 1.2 (or code that
3461 * fixes things up for same).
3463 * When link has gone down, and autoneg enabled, or autoneg has
3464 * failed and we give up until next time we set both speeds, and
3465 * then we want IBTA enabled as well as "use max enabled speed.
3467 static void set_7220_ibspeed_fast(struct qib_pportdata *ppd, u32 speed)
3469 ppd->cpspec->ibcddrctrl &= ~(IBA7220_IBC_SPEED_AUTONEG_MASK |
3470 IBA7220_IBC_IBTA_1_2_MASK);
3472 if (speed == (QIB_IB_SDR | QIB_IB_DDR))
3473 ppd->cpspec->ibcddrctrl |= IBA7220_IBC_SPEED_AUTONEG_MASK |
3474 IBA7220_IBC_IBTA_1_2_MASK;
3476 ppd->cpspec->ibcddrctrl |= speed == QIB_IB_DDR ?
3477 IBA7220_IBC_SPEED_DDR : IBA7220_IBC_SPEED_SDR;
3479 qib_write_kreg(ppd->dd, kr_ibcddrctrl, ppd->cpspec->ibcddrctrl);
3480 qib_write_kreg(ppd->dd, kr_scratch, 0);
3484 * This routine is only used when we are not talking to another
3485 * IB 1.2-compliant device that we think can do DDR.
3486 * (This includes all existing switch chips as of Oct 2007.)
3487 * 1.2-compliant devices go directly to DDR prior to reaching INIT
3489 static void try_7220_autoneg(struct qib_pportdata *ppd)
3491 unsigned long flags;
3494 * Required for older non-IB1.2 DDR switches. Newer
3495 * non-IB-compliant switches don't need it, but so far,
3496 * aren't bothered by it either. "Magic constant"
3498 qib_write_kreg(ppd->dd, kr_ncmodectrl, 0x3b9dc07);
3500 spin_lock_irqsave(&ppd->lflags_lock, flags);
3501 ppd->lflags |= QIBL_IB_AUTONEG_INPROG;
3502 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
3503 autoneg_7220_send(ppd, 0);
3504 set_7220_ibspeed_fast(ppd, QIB_IB_DDR);
3506 toggle_7220_rclkrls(ppd->dd);
3507 /* 2 msec is minimum length of a poll cycle */
3508 queue_delayed_work(ib_wq, &ppd->cpspec->autoneg_work,
3509 msecs_to_jiffies(2));
3513 * Handle the empirically determined mechanism for auto-negotiation
3514 * of DDR speed with switches.
3516 static void autoneg_7220_work(struct work_struct *work)
3518 struct qib_pportdata *ppd;
3519 struct qib_devdata *dd;
3521 unsigned long flags;
3523 ppd = &container_of(work, struct qib_chippport_specific,
3524 autoneg_work.work)->pportdata;
3528 * Busy wait for this first part, it should be at most a
3529 * few hundred usec, since we scheduled ourselves for 2msec.
3531 for (i = 0; i < 25; i++) {
3532 if (SYM_FIELD(ppd->lastibcstat, IBCStatus, LinkTrainingState)
3533 == IB_7220_LT_STATE_POLLQUIET) {
3534 qib_set_linkstate(ppd, QIB_IB_LINKDOWN_DISABLE);
3540 if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG))
3541 goto done; /* we got there early or told to stop */
3543 /* we expect this to timeout */
3544 if (wait_event_timeout(ppd->cpspec->autoneg_wait,
3545 !(ppd->lflags & QIBL_IB_AUTONEG_INPROG),
3546 msecs_to_jiffies(90)))
3549 toggle_7220_rclkrls(dd);
3551 /* we expect this to timeout */
3552 if (wait_event_timeout(ppd->cpspec->autoneg_wait,
3553 !(ppd->lflags & QIBL_IB_AUTONEG_INPROG),
3554 msecs_to_jiffies(1700)))
3557 set_7220_ibspeed_fast(ppd, QIB_IB_SDR);
3558 toggle_7220_rclkrls(dd);
3561 * Wait up to 250 msec for link to train and get to INIT at DDR;
3562 * this should terminate early.
3564 wait_event_timeout(ppd->cpspec->autoneg_wait,
3565 !(ppd->lflags & QIBL_IB_AUTONEG_INPROG),
3566 msecs_to_jiffies(250));
3568 if (ppd->lflags & QIBL_IB_AUTONEG_INPROG) {
3569 spin_lock_irqsave(&ppd->lflags_lock, flags);
3570 ppd->lflags &= ~QIBL_IB_AUTONEG_INPROG;
3571 if (dd->cspec->autoneg_tries == AUTONEG_TRIES) {
3572 ppd->lflags |= QIBL_IB_AUTONEG_FAILED;
3573 dd->cspec->autoneg_tries = 0;
3575 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
3576 set_7220_ibspeed_fast(ppd, ppd->link_speed_enabled);
3580 static u32 qib_7220_iblink_state(u64 ibcs)
3582 u32 state = (u32)SYM_FIELD(ibcs, IBCStatus, LinkState);
3585 case IB_7220_L_STATE_INIT:
3586 state = IB_PORT_INIT;
3588 case IB_7220_L_STATE_ARM:
3589 state = IB_PORT_ARMED;
3591 case IB_7220_L_STATE_ACTIVE:
3593 case IB_7220_L_STATE_ACT_DEFER:
3594 state = IB_PORT_ACTIVE;
3596 default: /* fall through */
3597 case IB_7220_L_STATE_DOWN:
3598 state = IB_PORT_DOWN;
3604 /* returns the IBTA port state, rather than the IBC link training state */
3605 static u8 qib_7220_phys_portstate(u64 ibcs)
3607 u8 state = (u8)SYM_FIELD(ibcs, IBCStatus, LinkTrainingState);
3608 return qib_7220_physportstate[state];
3611 static int qib_7220_ib_updown(struct qib_pportdata *ppd, int ibup, u64 ibcs)
3613 int ret = 0, symadj = 0;
3614 struct qib_devdata *dd = ppd->dd;
3615 unsigned long flags;
3617 spin_lock_irqsave(&ppd->lflags_lock, flags);
3618 ppd->lflags &= ~QIBL_IB_FORCE_NOTIFY;
3619 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
3623 * When the link goes down we don't want AEQ running, so it
3624 * won't interfere with IBC training, etc., and we need
3625 * to go back to the static SerDes preset values.
3627 if (!(ppd->lflags & (QIBL_IB_AUTONEG_FAILED |
3628 QIBL_IB_AUTONEG_INPROG)))
3629 set_7220_ibspeed_fast(ppd, ppd->link_speed_enabled);
3630 if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) {
3631 qib_sd7220_presets(dd);
3632 qib_cancel_sends(ppd); /* initial disarm, etc. */
3633 spin_lock_irqsave(&ppd->sdma_lock, flags);
3634 if (__qib_sdma_running(ppd))
3635 __qib_sdma_process_event(ppd,
3636 qib_sdma_event_e70_go_idle);
3637 spin_unlock_irqrestore(&ppd->sdma_lock, flags);
3639 /* this might better in qib_sd7220_presets() */
3640 set_7220_relock_poll(dd, ibup);
3642 if (qib_compat_ddr_negotiate &&
3643 !(ppd->lflags & (QIBL_IB_AUTONEG_FAILED |
3644 QIBL_IB_AUTONEG_INPROG)) &&
3645 ppd->link_speed_active == QIB_IB_SDR &&
3646 (ppd->link_speed_enabled & (QIB_IB_DDR | QIB_IB_SDR)) ==
3647 (QIB_IB_DDR | QIB_IB_SDR) &&
3648 dd->cspec->autoneg_tries < AUTONEG_TRIES) {
3649 /* we are SDR, and DDR auto-negotiation enabled */
3650 ++dd->cspec->autoneg_tries;
3651 if (!ppd->cpspec->ibdeltainprog) {
3652 ppd->cpspec->ibdeltainprog = 1;
3653 ppd->cpspec->ibsymsnap = read_7220_creg32(dd,
3655 ppd->cpspec->iblnkerrsnap = read_7220_creg32(dd,
3658 try_7220_autoneg(ppd);
3659 ret = 1; /* no other IB status change processing */
3660 } else if ((ppd->lflags & QIBL_IB_AUTONEG_INPROG) &&
3661 ppd->link_speed_active == QIB_IB_SDR) {
3662 autoneg_7220_send(ppd, 1);
3663 set_7220_ibspeed_fast(ppd, QIB_IB_DDR);
3665 toggle_7220_rclkrls(dd);
3666 ret = 1; /* no other IB status change processing */
3668 if ((ppd->lflags & QIBL_IB_AUTONEG_INPROG) &&
3669 (ppd->link_speed_active & QIB_IB_DDR)) {
3670 spin_lock_irqsave(&ppd->lflags_lock, flags);
3671 ppd->lflags &= ~(QIBL_IB_AUTONEG_INPROG |
3672 QIBL_IB_AUTONEG_FAILED);
3673 spin_unlock_irqrestore(&ppd->lflags_lock,
3675 dd->cspec->autoneg_tries = 0;
3676 /* re-enable SDR, for next link down */
3677 set_7220_ibspeed_fast(ppd,
3678 ppd->link_speed_enabled);
3679 wake_up(&ppd->cpspec->autoneg_wait);
3681 } else if (ppd->lflags & QIBL_IB_AUTONEG_FAILED) {
3683 * Clear autoneg failure flag, and do setup
3684 * so we'll try next time link goes down and
3685 * back to INIT (possibly connected to a
3686 * different device).
3688 spin_lock_irqsave(&ppd->lflags_lock, flags);
3689 ppd->lflags &= ~QIBL_IB_AUTONEG_FAILED;
3690 spin_unlock_irqrestore(&ppd->lflags_lock,
3692 ppd->cpspec->ibcddrctrl |=
3693 IBA7220_IBC_IBTA_1_2_MASK;
3694 qib_write_kreg(dd, kr_ncmodectrl, 0);
3699 if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG))
3703 ppd->delay_mult = rate_to_delay
3704 [(ibcs >> IBA7220_LINKSPEED_SHIFT) & 1]
3705 [(ibcs >> IBA7220_LINKWIDTH_SHIFT) & 1];
3707 set_7220_relock_poll(dd, ibup);
3708 spin_lock_irqsave(&ppd->sdma_lock, flags);
3710 * Unlike 7322, the 7220 needs this, due to lack of
3711 * interrupt in some cases when we have sdma active
3712 * when the link goes down.
3714 if (ppd->sdma_state.current_state !=
3715 qib_sdma_state_s20_idle)
3716 __qib_sdma_process_event(ppd,
3717 qib_sdma_event_e00_go_hw_down);
3718 spin_unlock_irqrestore(&ppd->sdma_lock, flags);
3723 if (ppd->cpspec->ibdeltainprog) {
3724 ppd->cpspec->ibdeltainprog = 0;
3725 ppd->cpspec->ibsymdelta += read_7220_creg32(ppd->dd,
3726 cr_ibsymbolerr) - ppd->cpspec->ibsymsnap;
3727 ppd->cpspec->iblnkerrdelta += read_7220_creg32(ppd->dd,
3728 cr_iblinkerrrecov) - ppd->cpspec->iblnkerrsnap;
3730 } else if (!ibup && qib_compat_ddr_negotiate &&
3731 !ppd->cpspec->ibdeltainprog &&
3732 !(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) {
3733 ppd->cpspec->ibdeltainprog = 1;
3734 ppd->cpspec->ibsymsnap = read_7220_creg32(ppd->dd,
3736 ppd->cpspec->iblnkerrsnap = read_7220_creg32(ppd->dd,
3741 qib_setup_7220_setextled(ppd, ibup);
3746 * Does read/modify/write to appropriate registers to
3747 * set output and direction bits selected by mask.
3748 * these are in their canonical postions (e.g. lsb of
3749 * dir will end up in D48 of extctrl on existing chips).
3750 * returns contents of GP Inputs.
3752 static int gpio_7220_mod(struct qib_devdata *dd, u32 out, u32 dir, u32 mask)
3754 u64 read_val, new_out;
3755 unsigned long flags;
3758 /* some bits being written, lock access to GPIO */
3761 spin_lock_irqsave(&dd->cspec->gpio_lock, flags);
3762 dd->cspec->extctrl &= ~((u64)mask << SYM_LSB(EXTCtrl, GPIOOe));
3763 dd->cspec->extctrl |= ((u64) dir << SYM_LSB(EXTCtrl, GPIOOe));
3764 new_out = (dd->cspec->gpio_out & ~mask) | out;
3766 qib_write_kreg(dd, kr_extctrl, dd->cspec->extctrl);
3767 qib_write_kreg(dd, kr_gpio_out, new_out);
3768 dd->cspec->gpio_out = new_out;
3769 spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags);
3772 * It is unlikely that a read at this time would get valid
3773 * data on a pin whose direction line was set in the same
3774 * call to this function. We include the read here because
3775 * that allows us to potentially combine a change on one pin with
3776 * a read on another, and because the old code did something like
3779 read_val = qib_read_kreg64(dd, kr_extstatus);
3780 return SYM_FIELD(read_val, EXTStatus, GPIOIn);
3784 * Read fundamental info we need to use the chip. These are
3785 * the registers that describe chip capabilities, and are
3786 * saved in shadow registers.
3788 static void get_7220_chip_params(struct qib_devdata *dd)
3794 dd->uregbase = qib_read_kreg32(dd, kr_userregbase);
3796 dd->rcvtidcnt = qib_read_kreg32(dd, kr_rcvtidcnt);
3797 dd->rcvtidbase = qib_read_kreg32(dd, kr_rcvtidbase);
3798 dd->rcvegrbase = qib_read_kreg32(dd, kr_rcvegrbase);
3799 dd->palign = qib_read_kreg32(dd, kr_palign);
3800 dd->piobufbase = qib_read_kreg64(dd, kr_sendpiobufbase);
3801 dd->pio2k_bufbase = dd->piobufbase & 0xffffffff;
3803 val = qib_read_kreg64(dd, kr_sendpiosize);
3804 dd->piosize2k = val & ~0U;
3805 dd->piosize4k = val >> 32;
3807 mtu = ib_mtu_enum_to_int(qib_ibmtu);
3809 mtu = QIB_DEFAULT_MTU;
3810 dd->pport->ibmtu = (u32)mtu;
3812 val = qib_read_kreg64(dd, kr_sendpiobufcnt);
3813 dd->piobcnt2k = val & ~0U;
3814 dd->piobcnt4k = val >> 32;
3815 /* these may be adjusted in init_chip_wc_pat() */
3816 dd->pio2kbase = (u32 __iomem *)
3817 ((char __iomem *) dd->kregbase + dd->pio2k_bufbase);
3818 if (dd->piobcnt4k) {
3819 dd->pio4kbase = (u32 __iomem *)
3820 ((char __iomem *) dd->kregbase +
3821 (dd->piobufbase >> 32));
3823 * 4K buffers take 2 pages; we use roundup just to be
3824 * paranoid; we calculate it once here, rather than on
3827 dd->align4k = ALIGN(dd->piosize4k, dd->palign);
3830 piobufs = dd->piobcnt4k + dd->piobcnt2k;
3832 dd->pioavregs = ALIGN(piobufs, sizeof(u64) * BITS_PER_BYTE / 2) /
3833 (sizeof(u64) * BITS_PER_BYTE / 2);
3837 * The chip base addresses in cspec and cpspec have to be set
3838 * after possible init_chip_wc_pat(), rather than in
3839 * qib_get_7220_chip_params(), so split out as separate function
3841 static void set_7220_baseaddrs(struct qib_devdata *dd)
3844 /* init after possible re-map in init_chip_wc_pat() */
3845 cregbase = qib_read_kreg32(dd, kr_counterregbase);
3846 dd->cspec->cregbase = (u64 __iomem *)
3847 ((char __iomem *) dd->kregbase + cregbase);
3849 dd->egrtidbase = (u64 __iomem *)
3850 ((char __iomem *) dd->kregbase + dd->rcvegrbase);
3854 #define SENDCTRL_SHADOWED (SYM_MASK(SendCtrl, SendIntBufAvail) | \
3855 SYM_MASK(SendCtrl, SPioEnable) | \
3856 SYM_MASK(SendCtrl, SSpecialTriggerEn) | \
3857 SYM_MASK(SendCtrl, SendBufAvailUpd) | \
3858 SYM_MASK(SendCtrl, AvailUpdThld) | \
3859 SYM_MASK(SendCtrl, SDmaEnable) | \
3860 SYM_MASK(SendCtrl, SDmaIntEnable) | \
3861 SYM_MASK(SendCtrl, SDmaHalt) | \
3862 SYM_MASK(SendCtrl, SDmaSingleDescriptor))
3864 static int sendctrl_hook(struct qib_devdata *dd,
3865 const struct diag_observer *op,
3866 u32 offs, u64 *data, u64 mask, int only_32)
3868 unsigned long flags;
3869 unsigned idx = offs / sizeof(u64);
3870 u64 local_data, all_bits;
3872 if (idx != kr_sendctrl) {
3873 qib_dev_err(dd, "SendCtrl Hook called with offs %X, %s-bit\n",
3874 offs, only_32 ? "32" : "64");
3881 spin_lock_irqsave(&dd->sendctrl_lock, flags);
3882 if ((mask & all_bits) != all_bits) {
3884 * At least some mask bits are zero, so we need
3885 * to read. The judgement call is whether from
3886 * reg or shadow. First-cut: read reg, and complain
3887 * if any bits which should be shadowed are different
3888 * from their shadowed value.
3891 local_data = (u64)qib_read_kreg32(dd, idx);
3893 local_data = qib_read_kreg64(dd, idx);
3894 qib_dev_err(dd, "Sendctrl -> %X, Shad -> %X\n",
3895 (u32)local_data, (u32)dd->sendctrl);
3896 if ((local_data & SENDCTRL_SHADOWED) !=
3897 (dd->sendctrl & SENDCTRL_SHADOWED))
3898 qib_dev_err(dd, "Sendctrl read: %X shadow is %X\n",
3899 (u32)local_data, (u32) dd->sendctrl);
3900 *data = (local_data & ~mask) | (*data & mask);
3904 * At least some mask bits are one, so we need
3905 * to write, but only shadow some bits.
3907 u64 sval, tval; /* Shadowed, transient */
3910 * New shadow val is bits we don't want to touch,
3911 * ORed with bits we do, that are intended for shadow.
3913 sval = (dd->sendctrl & ~mask);
3914 sval |= *data & SENDCTRL_SHADOWED & mask;
3915 dd->sendctrl = sval;
3916 tval = sval | (*data & ~SENDCTRL_SHADOWED & mask);
3917 qib_dev_err(dd, "Sendctrl <- %X, Shad <- %X\n",
3918 (u32)tval, (u32)sval);
3919 qib_write_kreg(dd, kr_sendctrl, tval);
3920 qib_write_kreg(dd, kr_scratch, 0Ull);
3922 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
3924 return only_32 ? 4 : 8;
3927 static const struct diag_observer sendctrl_observer = {
3928 sendctrl_hook, kr_sendctrl * sizeof(u64),
3929 kr_sendctrl * sizeof(u64)
3933 * write the final few registers that depend on some of the
3934 * init setup. Done late in init, just before bringing up
3937 static int qib_late_7220_initreg(struct qib_devdata *dd)
3942 qib_write_kreg(dd, kr_rcvhdrentsize, dd->rcvhdrentsize);
3943 qib_write_kreg(dd, kr_rcvhdrsize, dd->rcvhdrsize);
3944 qib_write_kreg(dd, kr_rcvhdrcnt, dd->rcvhdrcnt);
3945 qib_write_kreg(dd, kr_sendpioavailaddr, dd->pioavailregs_phys);
3946 val = qib_read_kreg64(dd, kr_sendpioavailaddr);
3947 if (val != dd->pioavailregs_phys) {
3949 "Catastrophic software error, SendPIOAvailAddr written as %lx, read back as %llx\n",
3950 (unsigned long) dd->pioavailregs_phys,
3951 (unsigned long long) val);
3954 qib_register_observer(dd, &sendctrl_observer);
3958 static int qib_init_7220_variables(struct qib_devdata *dd)
3960 struct qib_chippport_specific *cpspec;
3961 struct qib_pportdata *ppd;
3963 u32 sbufs, updthresh;
3965 cpspec = (struct qib_chippport_specific *)(dd + 1);
3966 ppd = &cpspec->pportdata;
3970 dd->cspec = (struct qib_chip_specific *)(cpspec + dd->num_pports);
3972 ppd->cpspec = cpspec;
3974 spin_lock_init(&dd->cspec->sdepb_lock);
3975 spin_lock_init(&dd->cspec->rcvmod_lock);
3976 spin_lock_init(&dd->cspec->gpio_lock);
3978 /* we haven't yet set QIB_PRESENT, so use read directly */
3979 dd->revision = readq(&dd->kregbase[kr_revision]);
3981 if ((dd->revision & 0xffffffffU) == 0xffffffffU) {
3983 "Revision register read failure, giving up initialization\n");
3987 dd->flags |= QIB_PRESENT; /* now register routines work */
3989 dd->majrev = (u8) SYM_FIELD(dd->revision, Revision_R,
3991 dd->minrev = (u8) SYM_FIELD(dd->revision, Revision_R,
3994 get_7220_chip_params(dd);
3995 qib_7220_boardname(dd);
3998 * GPIO bits for TWSI data and clock,
3999 * used for serial EEPROM.
4001 dd->gpio_sda_num = _QIB_GPIO_SDA_NUM;
4002 dd->gpio_scl_num = _QIB_GPIO_SCL_NUM;
4003 dd->twsi_eeprom_dev = QIB_TWSI_EEPROM_DEV;
4005 dd->flags |= QIB_HAS_INTX | QIB_HAS_LINK_LATENCY |
4006 QIB_NODMA_RTAIL | QIB_HAS_THRESH_UPDATE;
4007 dd->flags |= qib_special_trigger ?
4008 QIB_USE_SPCL_TRIG : QIB_HAS_SEND_DMA;
4010 init_waitqueue_head(&cpspec->autoneg_wait);
4011 INIT_DELAYED_WORK(&cpspec->autoneg_work, autoneg_7220_work);
4013 ret = qib_init_pportdata(ppd, dd, 0, 1);
4016 ppd->link_width_supported = IB_WIDTH_1X | IB_WIDTH_4X;
4017 ppd->link_speed_supported = QIB_IB_SDR | QIB_IB_DDR;
4019 ppd->link_width_enabled = ppd->link_width_supported;
4020 ppd->link_speed_enabled = ppd->link_speed_supported;
4022 * Set the initial values to reasonable default, will be set
4023 * for real when link is up.
4025 ppd->link_width_active = IB_WIDTH_4X;
4026 ppd->link_speed_active = QIB_IB_SDR;
4027 ppd->delay_mult = rate_to_delay[0][1];
4028 ppd->vls_supported = IB_VL_VL0;
4029 ppd->vls_operational = ppd->vls_supported;
4032 qib_write_kreg(dd, kr_rcvbthqp, QIB_KD_QP);
4034 timer_setup(&ppd->cpspec->chase_timer, reenable_7220_chase, 0);
4036 qib_num_cfg_vls = 1; /* if any 7220's, only one VL */
4038 dd->rcvhdrentsize = QIB_RCVHDR_ENTSIZE;
4039 dd->rcvhdrsize = QIB_DFLT_RCVHDRSIZE;
4041 dd->rcvhdrentsize - sizeof(u64) / sizeof(u32);
4043 /* we always allocate at least 2048 bytes for eager buffers */
4044 ret = ib_mtu_enum_to_int(qib_ibmtu);
4045 dd->rcvegrbufsize = ret != -1 ? max(ret, 2048) : QIB_DEFAULT_MTU;
4046 BUG_ON(!is_power_of_2(dd->rcvegrbufsize));
4047 dd->rcvegrbufsize_shift = ilog2(dd->rcvegrbufsize);
4049 qib_7220_tidtemplate(dd);
4052 * We can request a receive interrupt for 1 or
4053 * more packets from current offset. For now, we set this
4054 * up for a single packet.
4056 dd->rhdrhead_intr_off = 1ULL << 32;
4058 /* setup the stats timer; the add_timer is done at end of init */
4059 timer_setup(&dd->stats_timer, qib_get_7220_faststats, 0);
4060 dd->stats_timer.expires = jiffies + ACTIVITY_TIMER * HZ;
4063 * Control[4] has been added to change the arbitration within
4064 * the SDMA engine between favoring data fetches over descriptor
4065 * fetches. qib_sdma_fetch_arb==0 gives data fetches priority.
4067 if (qib_sdma_fetch_arb)
4068 dd->control |= 1 << 4;
4070 dd->ureg_align = 0x10000; /* 64KB alignment */
4072 dd->piosize2kmax_dwords = (dd->piosize2k >> 2)-1;
4073 qib_7220_config_ctxts(dd);
4074 qib_set_ctxtcnt(dd); /* needed for PAT setup */
4076 ret = init_chip_wc_pat(dd, 0);
4079 set_7220_baseaddrs(dd); /* set chip access pointers now */
4085 ret = qib_create_ctxts(dd);
4086 init_7220_cntrnames(dd);
4088 /* use all of 4KB buffers for the kernel SDMA, zero if !SDMA.
4089 * reserve the update threshold amount for other kernel use, such
4090 * as sending SMI, MAD, and ACKs, or 3, whichever is greater,
4091 * unless we aren't enabling SDMA, in which case we want to use
4092 * all the 4k bufs for the kernel.
4093 * if this was less than the update threshold, we could wait
4094 * a long time for an update. Coded this way because we
4095 * sometimes change the update threshold for various reasons,
4096 * and we want this to remain robust.
4098 updthresh = 8U; /* update threshold */
4099 if (dd->flags & QIB_HAS_SEND_DMA) {
4100 dd->cspec->sdmabufcnt = dd->piobcnt4k;
4101 sbufs = updthresh > 3 ? updthresh : 3;
4103 dd->cspec->sdmabufcnt = 0;
4104 sbufs = dd->piobcnt4k;
4107 dd->cspec->lastbuf_for_pio = dd->piobcnt2k + dd->piobcnt4k -
4108 dd->cspec->sdmabufcnt;
4109 dd->lastctxt_piobuf = dd->cspec->lastbuf_for_pio - sbufs;
4110 dd->cspec->lastbuf_for_pio--; /* range is <= , not < */
4111 dd->last_pio = dd->cspec->lastbuf_for_pio;
4112 dd->pbufsctxt = dd->lastctxt_piobuf /
4113 (dd->cfgctxts - dd->first_user_ctxt);
4116 * if we are at 16 user contexts, we will have one 7 sbufs
4117 * per context, so drop the update threshold to match. We
4118 * want to update before we actually run out, at low pbufs/ctxt
4119 * so give ourselves some margin
4121 if ((dd->pbufsctxt - 2) < updthresh)
4122 updthresh = dd->pbufsctxt - 2;
4124 dd->cspec->updthresh_dflt = updthresh;
4125 dd->cspec->updthresh = updthresh;
4127 /* before full enable, no interrupts, no locking needed */
4128 dd->sendctrl |= (updthresh & SYM_RMASK(SendCtrl, AvailUpdThld))
4129 << SYM_LSB(SendCtrl, AvailUpdThld);
4131 dd->psxmitwait_supported = 1;
4132 dd->psxmitwait_check_rate = QIB_7220_PSXMITWAIT_CHECK_RATE;
4137 static u32 __iomem *qib_7220_getsendbuf(struct qib_pportdata *ppd, u64 pbc,
4140 u32 first, last, plen = pbc & QIB_PBC_LENGTH_MASK;
4141 struct qib_devdata *dd = ppd->dd;
4144 if (((pbc >> 32) & PBC_7220_VL15_SEND_CTRL) &&
4145 !(ppd->lflags & (QIBL_IB_AUTONEG_INPROG | QIBL_LINKACTIVE)))
4146 buf = get_7220_link_buf(ppd, pbufnum);
4148 if ((plen + 1) > dd->piosize2kmax_dwords)
4149 first = dd->piobcnt2k;
4152 /* try 4k if all 2k busy, so same last for both sizes */
4153 last = dd->cspec->lastbuf_for_pio;
4154 buf = qib_getsendbuf_range(dd, pbufnum, first, last);
4159 /* these 2 "counters" are really control registers, and are always RW */
4160 static void qib_set_cntr_7220_sample(struct qib_pportdata *ppd, u32 intv,
4163 write_7220_creg(ppd->dd, cr_psinterval, intv);
4164 write_7220_creg(ppd->dd, cr_psstart, start);
4168 * NOTE: no real attempt is made to generalize the SDMA stuff.
4169 * At some point "soon" we will have a new more generalized
4170 * set of sdma interface, and then we'll clean this up.
4173 /* Must be called with sdma_lock held, or before init finished */
4174 static void qib_sdma_update_7220_tail(struct qib_pportdata *ppd, u16 tail)
4176 /* Commit writes to memory and advance the tail on the chip */
4178 ppd->sdma_descq_tail = tail;
4179 qib_write_kreg(ppd->dd, kr_senddmatail, tail);
4182 static void qib_sdma_set_7220_desc_cnt(struct qib_pportdata *ppd, unsigned cnt)
4186 static struct sdma_set_state_action sdma_7220_action_table[] = {
4187 [qib_sdma_state_s00_hw_down] = {
4191 .go_s99_running_tofalse = 1,
4193 [qib_sdma_state_s10_hw_start_up_wait] = {
4198 [qib_sdma_state_s20_idle] = {
4203 [qib_sdma_state_s30_sw_clean_up_wait] = {
4208 [qib_sdma_state_s40_hw_clean_up_wait] = {
4213 [qib_sdma_state_s50_hw_halt_wait] = {
4218 [qib_sdma_state_s99_running] = {
4222 .go_s99_running_totrue = 1,
4226 static void qib_7220_sdma_init_early(struct qib_pportdata *ppd)
4228 ppd->sdma_state.set_state_action = sdma_7220_action_table;
4231 static int init_sdma_7220_regs(struct qib_pportdata *ppd)
4233 struct qib_devdata *dd = ppd->dd;
4235 u64 senddmabufmask[3] = { 0 };
4237 /* Set SendDmaBase */
4238 qib_write_kreg(dd, kr_senddmabase, ppd->sdma_descq_phys);
4239 qib_sdma_7220_setlengen(ppd);
4240 qib_sdma_update_7220_tail(ppd, 0); /* Set SendDmaTail */
4241 /* Set SendDmaHeadAddr */
4242 qib_write_kreg(dd, kr_senddmaheadaddr, ppd->sdma_head_phys);
4245 * Reserve all the former "kernel" piobufs, using high number range
4246 * so we get as many 4K buffers as possible
4248 n = dd->piobcnt2k + dd->piobcnt4k;
4249 i = n - dd->cspec->sdmabufcnt;
4251 for (; i < n; ++i) {
4252 unsigned word = i / 64;
4253 unsigned bit = i & 63;
4256 senddmabufmask[word] |= 1ULL << bit;
4258 qib_write_kreg(dd, kr_senddmabufmask0, senddmabufmask[0]);
4259 qib_write_kreg(dd, kr_senddmabufmask1, senddmabufmask[1]);
4260 qib_write_kreg(dd, kr_senddmabufmask2, senddmabufmask[2]);
4262 ppd->sdma_state.first_sendbuf = i;
4263 ppd->sdma_state.last_sendbuf = n;
4268 /* sdma_lock must be held */
4269 static u16 qib_sdma_7220_gethead(struct qib_pportdata *ppd)
4271 struct qib_devdata *dd = ppd->dd;
4279 use_dmahead = __qib_sdma_running(ppd) &&
4280 (dd->flags & QIB_HAS_SDMA_TIMEOUT);
4282 hwhead = use_dmahead ?
4283 (u16)le64_to_cpu(*ppd->sdma_head_dma) :
4284 (u16)qib_read_kreg32(dd, kr_senddmahead);
4286 swhead = ppd->sdma_descq_head;
4287 swtail = ppd->sdma_descq_tail;
4288 cnt = ppd->sdma_descq_cnt;
4290 if (swhead < swtail) {
4292 sane = (hwhead >= swhead) & (hwhead <= swtail);
4293 } else if (swhead > swtail) {
4294 /* wrapped around */
4295 sane = ((hwhead >= swhead) && (hwhead < cnt)) ||
4299 sane = (hwhead == swhead);
4302 if (unlikely(!sane)) {
4304 /* try one more time, directly from the register */
4308 /* assume no progress */
4315 static int qib_sdma_7220_busy(struct qib_pportdata *ppd)
4317 u64 hwstatus = qib_read_kreg64(ppd->dd, kr_senddmastatus);
4319 return (hwstatus & SYM_MASK(SendDmaStatus, ScoreBoardDrainInProg)) ||
4320 (hwstatus & SYM_MASK(SendDmaStatus, AbortInProg)) ||
4321 (hwstatus & SYM_MASK(SendDmaStatus, InternalSDmaEnable)) ||
4322 !(hwstatus & SYM_MASK(SendDmaStatus, ScbEmpty));
4326 * Compute the amount of delay before sending the next packet if the
4327 * port's send rate differs from the static rate set for the QP.
4328 * Since the delay affects this packet but the amount of the delay is
4329 * based on the length of the previous packet, use the last delay computed
4330 * and save the delay count for this packet to be used next time
4333 static u32 qib_7220_setpbc_control(struct qib_pportdata *ppd, u32 plen,
4336 u8 snd_mult = ppd->delay_mult;
4337 u8 rcv_mult = ib_rate_to_delay[srate];
4338 u32 ret = ppd->cpspec->last_delay_mult;
4340 ppd->cpspec->last_delay_mult = (rcv_mult > snd_mult) ?
4341 (plen * (rcv_mult - snd_mult) + 1) >> 1 : 0;
4343 /* Indicate VL15, if necessary */
4345 ret |= PBC_7220_VL15_SEND_CTRL;
4349 static void qib_7220_initvl15_bufs(struct qib_devdata *dd)
4353 static void qib_7220_init_ctxt(struct qib_ctxtdata *rcd)
4356 rcd->rcvegrcnt = IBA7220_KRCVEGRCNT;
4357 rcd->rcvegr_tid_base = 0;
4359 rcd->rcvegrcnt = rcd->dd->cspec->rcvegrcnt;
4360 rcd->rcvegr_tid_base = IBA7220_KRCVEGRCNT +
4361 (rcd->ctxt - 1) * rcd->rcvegrcnt;
4365 static void qib_7220_txchk_change(struct qib_devdata *dd, u32 start,
4366 u32 len, u32 which, struct qib_ctxtdata *rcd)
4369 unsigned long flags;
4372 case TXCHK_CHG_TYPE_KERN:
4373 /* see if we need to raise avail update threshold */
4374 spin_lock_irqsave(&dd->uctxt_lock, flags);
4375 for (i = dd->first_user_ctxt;
4376 dd->cspec->updthresh != dd->cspec->updthresh_dflt
4377 && i < dd->cfgctxts; i++)
4378 if (dd->rcd[i] && dd->rcd[i]->subctxt_cnt &&
4379 ((dd->rcd[i]->piocnt / dd->rcd[i]->subctxt_cnt) - 1)
4380 < dd->cspec->updthresh_dflt)
4382 spin_unlock_irqrestore(&dd->uctxt_lock, flags);
4383 if (i == dd->cfgctxts) {
4384 spin_lock_irqsave(&dd->sendctrl_lock, flags);
4385 dd->cspec->updthresh = dd->cspec->updthresh_dflt;
4386 dd->sendctrl &= ~SYM_MASK(SendCtrl, AvailUpdThld);
4387 dd->sendctrl |= (dd->cspec->updthresh &
4388 SYM_RMASK(SendCtrl, AvailUpdThld)) <<
4389 SYM_LSB(SendCtrl, AvailUpdThld);
4390 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
4391 sendctrl_7220_mod(dd->pport, QIB_SENDCTRL_AVAIL_BLIP);
4394 case TXCHK_CHG_TYPE_USER:
4395 spin_lock_irqsave(&dd->sendctrl_lock, flags);
4396 if (rcd && rcd->subctxt_cnt && ((rcd->piocnt
4397 / rcd->subctxt_cnt) - 1) < dd->cspec->updthresh) {
4398 dd->cspec->updthresh = (rcd->piocnt /
4399 rcd->subctxt_cnt) - 1;
4400 dd->sendctrl &= ~SYM_MASK(SendCtrl, AvailUpdThld);
4401 dd->sendctrl |= (dd->cspec->updthresh &
4402 SYM_RMASK(SendCtrl, AvailUpdThld))
4403 << SYM_LSB(SendCtrl, AvailUpdThld);
4404 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
4405 sendctrl_7220_mod(dd->pport, QIB_SENDCTRL_AVAIL_BLIP);
4407 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
4412 static void writescratch(struct qib_devdata *dd, u32 val)
4414 qib_write_kreg(dd, kr_scratch, val);
4417 #define VALID_TS_RD_REG_MASK 0xBF
4419 * qib_7220_tempsense_read - read register of temp sensor via TWSI
4420 * @dd: the qlogic_ib device
4421 * @regnum: register to read from
4423 * returns reg contents (0..255) or < 0 for error
4425 static int qib_7220_tempsense_rd(struct qib_devdata *dd, int regnum)
4435 /* return a bogus value for (the one) register we do not have */
4436 if (!((1 << regnum) & VALID_TS_RD_REG_MASK)) {
4441 ret = mutex_lock_interruptible(&dd->eep_lock);
4445 ret = qib_twsi_blk_rd(dd, QIB_TWSI_TEMP_DEV, regnum, &rdata, 1);
4449 mutex_unlock(&dd->eep_lock);
4452 * There are three possibilities here:
4453 * ret is actual value (0..255)
4454 * ret is -ENXIO or -EINVAL from twsi code or this file
4455 * ret is -EINTR from mutex_lock_interruptible.
4461 #ifdef CONFIG_INFINIBAND_QIB_DCA
4462 static int qib_7220_notify_dca(struct qib_devdata *dd, unsigned long event)
4468 /* Dummy function, as 7220 boards never disable EEPROM Write */
4469 static int qib_7220_eeprom_wen(struct qib_devdata *dd, int wen)
4475 * qib_init_iba7220_funcs - set up the chip-specific function pointers
4476 * @dev: the pci_dev for qlogic_ib device
4477 * @ent: pci_device_id struct for this dev
4479 * This is global, and is called directly at init to set up the
4480 * chip-specific function pointers for later use.
4482 struct qib_devdata *qib_init_iba7220_funcs(struct pci_dev *pdev,
4483 const struct pci_device_id *ent)
4485 struct qib_devdata *dd;
4487 u32 boardid, minwidth;
4489 dd = qib_alloc_devdata(pdev, sizeof(struct qib_chip_specific) +
4490 sizeof(struct qib_chippport_specific));
4494 dd->f_bringup_serdes = qib_7220_bringup_serdes;
4495 dd->f_cleanup = qib_setup_7220_cleanup;
4496 dd->f_clear_tids = qib_7220_clear_tids;
4497 dd->f_free_irq = qib_free_irq;
4498 dd->f_get_base_info = qib_7220_get_base_info;
4499 dd->f_get_msgheader = qib_7220_get_msgheader;
4500 dd->f_getsendbuf = qib_7220_getsendbuf;
4501 dd->f_gpio_mod = gpio_7220_mod;
4502 dd->f_eeprom_wen = qib_7220_eeprom_wen;
4503 dd->f_hdrqempty = qib_7220_hdrqempty;
4504 dd->f_ib_updown = qib_7220_ib_updown;
4505 dd->f_init_ctxt = qib_7220_init_ctxt;
4506 dd->f_initvl15_bufs = qib_7220_initvl15_bufs;
4507 dd->f_intr_fallback = qib_7220_intr_fallback;
4508 dd->f_late_initreg = qib_late_7220_initreg;
4509 dd->f_setpbc_control = qib_7220_setpbc_control;
4510 dd->f_portcntr = qib_portcntr_7220;
4511 dd->f_put_tid = qib_7220_put_tid;
4512 dd->f_quiet_serdes = qib_7220_quiet_serdes;
4513 dd->f_rcvctrl = rcvctrl_7220_mod;
4514 dd->f_read_cntrs = qib_read_7220cntrs;
4515 dd->f_read_portcntrs = qib_read_7220portcntrs;
4516 dd->f_reset = qib_setup_7220_reset;
4517 dd->f_init_sdma_regs = init_sdma_7220_regs;
4518 dd->f_sdma_busy = qib_sdma_7220_busy;
4519 dd->f_sdma_gethead = qib_sdma_7220_gethead;
4520 dd->f_sdma_sendctrl = qib_7220_sdma_sendctrl;
4521 dd->f_sdma_set_desc_cnt = qib_sdma_set_7220_desc_cnt;
4522 dd->f_sdma_update_tail = qib_sdma_update_7220_tail;
4523 dd->f_sdma_hw_clean_up = qib_7220_sdma_hw_clean_up;
4524 dd->f_sdma_hw_start_up = qib_7220_sdma_hw_start_up;
4525 dd->f_sdma_init_early = qib_7220_sdma_init_early;
4526 dd->f_sendctrl = sendctrl_7220_mod;
4527 dd->f_set_armlaunch = qib_set_7220_armlaunch;
4528 dd->f_set_cntr_sample = qib_set_cntr_7220_sample;
4529 dd->f_iblink_state = qib_7220_iblink_state;
4530 dd->f_ibphys_portstate = qib_7220_phys_portstate;
4531 dd->f_get_ib_cfg = qib_7220_get_ib_cfg;
4532 dd->f_set_ib_cfg = qib_7220_set_ib_cfg;
4533 dd->f_set_ib_loopback = qib_7220_set_loopback;
4534 dd->f_set_intr_state = qib_7220_set_intr_state;
4535 dd->f_setextled = qib_setup_7220_setextled;
4536 dd->f_txchk_change = qib_7220_txchk_change;
4537 dd->f_update_usrhead = qib_update_7220_usrhead;
4538 dd->f_wantpiobuf_intr = qib_wantpiobuf_7220_intr;
4539 dd->f_xgxs_reset = qib_7220_xgxs_reset;
4540 dd->f_writescratch = writescratch;
4541 dd->f_tempsense_rd = qib_7220_tempsense_rd;
4542 #ifdef CONFIG_INFINIBAND_QIB_DCA
4543 dd->f_notify_dca = qib_7220_notify_dca;
4546 * Do remaining pcie setup and save pcie values in dd.
4547 * Any error printing is already done by the init code.
4548 * On return, we have the chip mapped, but chip registers
4549 * are not set up until start of qib_init_7220_variables.
4551 ret = qib_pcie_ddinit(dd, pdev, ent);
4555 /* initialize chip-specific variables */
4556 ret = qib_init_7220_variables(dd);
4563 boardid = SYM_FIELD(dd->revision, Revision,
4570 minwidth = 16; /* x16 capable boards */
4573 minwidth = 8; /* x8 capable boards */
4576 if (qib_pcie_params(dd, minwidth, NULL))
4578 "Failed to setup PCIe or interrupts; continuing anyway\n");
4580 if (qib_read_kreg64(dd, kr_hwerrstatus) &
4581 QLOGIC_IB_HWE_SERDESPLLFAILED)
4582 qib_write_kreg(dd, kr_hwerrclear,
4583 QLOGIC_IB_HWE_SERDESPLLFAILED);
4585 /* setup interrupt handler (interrupt type handled above) */
4586 qib_setup_7220_interrupt(dd);
4587 qib_7220_init_hwerrors(dd);
4589 /* clear diagctrl register, in case diags were running and crashed */
4590 qib_write_kreg(dd, kr_hwdiagctrl, 0);
4595 qib_pcie_ddcleanup(dd);
4597 qib_free_devdata(dd);
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