2 * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved.
3 * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenIB.org BSD license below:
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 * This file contains all of the code that is specific to the
35 * InfiniPath 7220 chip (except that specific to the SerDes)
38 #include <linux/interrupt.h>
39 #include <linux/pci.h>
40 #include <linux/delay.h>
42 #include <rdma/ib_verbs.h>
44 #include "ipath_kernel.h"
45 #include "ipath_registers.h"
46 #include "ipath_7220.h"
48 static void ipath_setup_7220_setextled(struct ipath_devdata *, u64, u64);
50 static unsigned ipath_compat_ddr_negotiate = 1;
52 module_param_named(compat_ddr_negotiate, ipath_compat_ddr_negotiate, uint,
54 MODULE_PARM_DESC(compat_ddr_negotiate,
55 "Attempt pre-IBTA 1.2 DDR speed negotiation");
57 static unsigned ipath_sdma_fetch_arb = 1;
58 module_param_named(fetch_arb, ipath_sdma_fetch_arb, uint, S_IRUGO);
59 MODULE_PARM_DESC(fetch_arb, "IBA7220: change SDMA descriptor arbitration");
62 * This file contains almost all the chip-specific register information and
63 * access functions for the QLogic InfiniPath 7220 PCI-Express chip, with the
64 * exception of SerDes support, which in in ipath_sd7220.c.
66 * This lists the InfiniPath registers, in the actual chip layout.
67 * This structure should never be directly accessed.
69 struct _infinipath_do_not_use_kernel_regs {
70 unsigned long long Revision;
71 unsigned long long Control;
72 unsigned long long PageAlign;
73 unsigned long long PortCnt;
74 unsigned long long DebugPortSelect;
75 unsigned long long DebugSigsIntSel; /* was Reserved0;*/
76 unsigned long long SendRegBase;
77 unsigned long long UserRegBase;
78 unsigned long long CounterRegBase;
79 unsigned long long Scratch;
80 unsigned long long EEPROMAddrCmd; /* was Reserved1; */
81 unsigned long long EEPROMData; /* was Reserved2; */
82 unsigned long long IntBlocked;
83 unsigned long long IntMask;
84 unsigned long long IntStatus;
85 unsigned long long IntClear;
86 unsigned long long ErrorMask;
87 unsigned long long ErrorStatus;
88 unsigned long long ErrorClear;
89 unsigned long long HwErrMask;
90 unsigned long long HwErrStatus;
91 unsigned long long HwErrClear;
92 unsigned long long HwDiagCtrl;
93 unsigned long long MDIO;
94 unsigned long long IBCStatus;
95 unsigned long long IBCCtrl;
96 unsigned long long ExtStatus;
97 unsigned long long ExtCtrl;
98 unsigned long long GPIOOut;
99 unsigned long long GPIOMask;
100 unsigned long long GPIOStatus;
101 unsigned long long GPIOClear;
102 unsigned long long RcvCtrl;
103 unsigned long long RcvBTHQP;
104 unsigned long long RcvHdrSize;
105 unsigned long long RcvHdrCnt;
106 unsigned long long RcvHdrEntSize;
107 unsigned long long RcvTIDBase;
108 unsigned long long RcvTIDCnt;
109 unsigned long long RcvEgrBase;
110 unsigned long long RcvEgrCnt;
111 unsigned long long RcvBufBase;
112 unsigned long long RcvBufSize;
113 unsigned long long RxIntMemBase;
114 unsigned long long RxIntMemSize;
115 unsigned long long RcvPartitionKey;
116 unsigned long long RcvQPMulticastPort;
117 unsigned long long RcvPktLEDCnt;
118 unsigned long long IBCDDRCtrl;
119 unsigned long long HRTBT_GUID;
120 unsigned long long IB_SDTEST_IF_TX;
121 unsigned long long IB_SDTEST_IF_RX;
122 unsigned long long IBCDDRCtrl2;
123 unsigned long long IBCDDRStatus;
124 unsigned long long JIntReload;
125 unsigned long long IBNCModeCtrl;
126 unsigned long long SendCtrl;
127 unsigned long long SendBufBase;
128 unsigned long long SendBufSize;
129 unsigned long long SendBufCnt;
130 unsigned long long SendAvailAddr;
131 unsigned long long TxIntMemBase;
132 unsigned long long TxIntMemSize;
133 unsigned long long SendDmaBase;
134 unsigned long long SendDmaLenGen;
135 unsigned long long SendDmaTail;
136 unsigned long long SendDmaHead;
137 unsigned long long SendDmaHeadAddr;
138 unsigned long long SendDmaBufMask0;
139 unsigned long long SendDmaBufMask1;
140 unsigned long long SendDmaBufMask2;
141 unsigned long long SendDmaStatus;
142 unsigned long long SendBufferError;
143 unsigned long long SendBufferErrorCONT1;
144 unsigned long long SendBufErr2; /* was Reserved6SBE[0/6] */
145 unsigned long long Reserved6L[2];
146 unsigned long long AvailUpdCount;
147 unsigned long long RcvHdrAddr0;
148 unsigned long long RcvHdrAddrs[16]; /* Why enumerate? */
149 unsigned long long Reserved7hdtl; /* Align next to 300 */
150 unsigned long long RcvHdrTailAddr0; /* 300, like others */
151 unsigned long long RcvHdrTailAddrs[16];
152 unsigned long long Reserved9SW[7]; /* was [8]; we have 17 ports */
153 unsigned long long IbsdEpbAccCtl; /* IB Serdes EPB access control */
154 unsigned long long IbsdEpbTransReg; /* IB Serdes EPB Transaction */
155 unsigned long long Reserved10sds; /* was SerdesStatus on */
156 unsigned long long XGXSConfig;
157 unsigned long long IBSerDesCtrl; /* Was IBPLLCfg on Monty */
158 unsigned long long EEPCtlStat; /* for "boot" EEPROM/FLASH */
159 unsigned long long EEPAddrCmd;
160 unsigned long long EEPData;
161 unsigned long long PcieEpbAccCtl;
162 unsigned long long PcieEpbTransCtl;
163 unsigned long long EfuseCtl; /* E-Fuse control */
164 unsigned long long EfuseData[4];
165 unsigned long long ProcMon;
166 /* this chip moves following two from previous 200, 208 */
167 unsigned long long PCIeRBufTestReg0;
168 unsigned long long PCIeRBufTestReg1;
169 /* added for this chip */
170 unsigned long long PCIeRBufTestReg2;
171 unsigned long long PCIeRBufTestReg3;
172 /* added for this chip, debug only */
173 unsigned long long SPC_JTAG_ACCESS_REG;
174 unsigned long long LAControlReg;
175 unsigned long long GPIODebugSelReg;
176 unsigned long long DebugPortValueReg;
177 /* added for this chip, DMA */
178 unsigned long long SendDmaBufUsed[3];
179 unsigned long long SendDmaReqTagUsed;
181 * added for this chip, EFUSE: note that these program 64-bit
183 unsigned long long efuse_pgm_data[2];
184 unsigned long long Reserved11LAalign[10]; /* Skip 4B0..4F8 */
185 /* we have 30 regs for DDS and RXEQ in IB SERDES */
186 unsigned long long SerDesDDSRXEQ[30];
187 unsigned long long Reserved12LAalign[2]; /* Skip 5F0, 5F8 */
188 /* added for LA debug support */
189 unsigned long long LAMemory[32];
192 struct _infinipath_do_not_use_counters {
194 __u64 LBFlowStallCnt;
195 __u64 TxSDmaDescCnt; /* was Reserved1 */
196 __u64 TxUnsupVLErrCnt;
201 __u64 TxMaxMinLenErrCnt;
203 __u64 TxFlowStallCnt;
204 __u64 TxDroppedPktCnt;
205 __u64 RxDroppedPktCnt;
210 __u64 RxMaxMinLenErrCnt;
213 __u64 RxFlowCtrlErrCnt;
214 __u64 RxBadFormatCnt;
215 __u64 RxLinkProblemCnt;
219 __u64 RxTIDFullErrCnt;
220 __u64 RxTIDValidErrCnt;
221 __u64 RxPKeyMismatchCnt;
222 __u64 RxP0HdrEgrOvflCnt;
223 __u64 RxP1HdrEgrOvflCnt;
224 __u64 RxP2HdrEgrOvflCnt;
225 __u64 RxP3HdrEgrOvflCnt;
226 __u64 RxP4HdrEgrOvflCnt;
227 __u64 RxP5HdrEgrOvflCnt;
228 __u64 RxP6HdrEgrOvflCnt;
229 __u64 RxP7HdrEgrOvflCnt;
230 __u64 RxP8HdrEgrOvflCnt;
231 __u64 RxP9HdrEgrOvflCnt; /* was Reserved6 */
232 __u64 RxP10HdrEgrOvflCnt; /* was Reserved7 */
233 __u64 RxP11HdrEgrOvflCnt; /* new for IBA7220 */
234 __u64 RxP12HdrEgrOvflCnt; /* new for IBA7220 */
235 __u64 RxP13HdrEgrOvflCnt; /* new for IBA7220 */
236 __u64 RxP14HdrEgrOvflCnt; /* new for IBA7220 */
237 __u64 RxP15HdrEgrOvflCnt; /* new for IBA7220 */
238 __u64 RxP16HdrEgrOvflCnt; /* new for IBA7220 */
239 __u64 IBStatusChangeCnt;
240 __u64 IBLinkErrRecoveryCnt;
241 __u64 IBLinkDownedCnt;
242 __u64 IBSymbolErrCnt;
243 /* The following are new for IBA7220 */
244 __u64 RxVL15DroppedPktCnt;
245 __u64 RxOtherLocalPhyErrCnt;
246 __u64 PcieRetryBufDiagQwordCnt;
247 __u64 ExcessBufferOvflCnt;
248 __u64 LocalLinkIntegrityErrCnt;
255 __u64 PSRcvDataCount;
256 __u64 PSRcvPktsCount;
257 __u64 PSXmitDataCount;
258 __u64 PSXmitPktsCount;
259 __u64 PSXmitWaitCount;
262 #define IPATH_KREG_OFFSET(field) (offsetof( \
263 struct _infinipath_do_not_use_kernel_regs, field) / sizeof(u64))
264 #define IPATH_CREG_OFFSET(field) (offsetof( \
265 struct _infinipath_do_not_use_counters, field) / sizeof(u64))
267 static const struct ipath_kregs ipath_7220_kregs = {
268 .kr_control = IPATH_KREG_OFFSET(Control),
269 .kr_counterregbase = IPATH_KREG_OFFSET(CounterRegBase),
270 .kr_debugportselect = IPATH_KREG_OFFSET(DebugPortSelect),
271 .kr_errorclear = IPATH_KREG_OFFSET(ErrorClear),
272 .kr_errormask = IPATH_KREG_OFFSET(ErrorMask),
273 .kr_errorstatus = IPATH_KREG_OFFSET(ErrorStatus),
274 .kr_extctrl = IPATH_KREG_OFFSET(ExtCtrl),
275 .kr_extstatus = IPATH_KREG_OFFSET(ExtStatus),
276 .kr_gpio_clear = IPATH_KREG_OFFSET(GPIOClear),
277 .kr_gpio_mask = IPATH_KREG_OFFSET(GPIOMask),
278 .kr_gpio_out = IPATH_KREG_OFFSET(GPIOOut),
279 .kr_gpio_status = IPATH_KREG_OFFSET(GPIOStatus),
280 .kr_hwdiagctrl = IPATH_KREG_OFFSET(HwDiagCtrl),
281 .kr_hwerrclear = IPATH_KREG_OFFSET(HwErrClear),
282 .kr_hwerrmask = IPATH_KREG_OFFSET(HwErrMask),
283 .kr_hwerrstatus = IPATH_KREG_OFFSET(HwErrStatus),
284 .kr_ibcctrl = IPATH_KREG_OFFSET(IBCCtrl),
285 .kr_ibcstatus = IPATH_KREG_OFFSET(IBCStatus),
286 .kr_intblocked = IPATH_KREG_OFFSET(IntBlocked),
287 .kr_intclear = IPATH_KREG_OFFSET(IntClear),
288 .kr_intmask = IPATH_KREG_OFFSET(IntMask),
289 .kr_intstatus = IPATH_KREG_OFFSET(IntStatus),
290 .kr_mdio = IPATH_KREG_OFFSET(MDIO),
291 .kr_pagealign = IPATH_KREG_OFFSET(PageAlign),
292 .kr_partitionkey = IPATH_KREG_OFFSET(RcvPartitionKey),
293 .kr_portcnt = IPATH_KREG_OFFSET(PortCnt),
294 .kr_rcvbthqp = IPATH_KREG_OFFSET(RcvBTHQP),
295 .kr_rcvbufbase = IPATH_KREG_OFFSET(RcvBufBase),
296 .kr_rcvbufsize = IPATH_KREG_OFFSET(RcvBufSize),
297 .kr_rcvctrl = IPATH_KREG_OFFSET(RcvCtrl),
298 .kr_rcvegrbase = IPATH_KREG_OFFSET(RcvEgrBase),
299 .kr_rcvegrcnt = IPATH_KREG_OFFSET(RcvEgrCnt),
300 .kr_rcvhdrcnt = IPATH_KREG_OFFSET(RcvHdrCnt),
301 .kr_rcvhdrentsize = IPATH_KREG_OFFSET(RcvHdrEntSize),
302 .kr_rcvhdrsize = IPATH_KREG_OFFSET(RcvHdrSize),
303 .kr_rcvintmembase = IPATH_KREG_OFFSET(RxIntMemBase),
304 .kr_rcvintmemsize = IPATH_KREG_OFFSET(RxIntMemSize),
305 .kr_rcvtidbase = IPATH_KREG_OFFSET(RcvTIDBase),
306 .kr_rcvtidcnt = IPATH_KREG_OFFSET(RcvTIDCnt),
307 .kr_revision = IPATH_KREG_OFFSET(Revision),
308 .kr_scratch = IPATH_KREG_OFFSET(Scratch),
309 .kr_sendbuffererror = IPATH_KREG_OFFSET(SendBufferError),
310 .kr_sendctrl = IPATH_KREG_OFFSET(SendCtrl),
311 .kr_sendpioavailaddr = IPATH_KREG_OFFSET(SendAvailAddr),
312 .kr_sendpiobufbase = IPATH_KREG_OFFSET(SendBufBase),
313 .kr_sendpiobufcnt = IPATH_KREG_OFFSET(SendBufCnt),
314 .kr_sendpiosize = IPATH_KREG_OFFSET(SendBufSize),
315 .kr_sendregbase = IPATH_KREG_OFFSET(SendRegBase),
316 .kr_txintmembase = IPATH_KREG_OFFSET(TxIntMemBase),
317 .kr_txintmemsize = IPATH_KREG_OFFSET(TxIntMemSize),
318 .kr_userregbase = IPATH_KREG_OFFSET(UserRegBase),
320 .kr_xgxsconfig = IPATH_KREG_OFFSET(XGXSConfig),
322 /* send dma related regs */
323 .kr_senddmabase = IPATH_KREG_OFFSET(SendDmaBase),
324 .kr_senddmalengen = IPATH_KREG_OFFSET(SendDmaLenGen),
325 .kr_senddmatail = IPATH_KREG_OFFSET(SendDmaTail),
326 .kr_senddmahead = IPATH_KREG_OFFSET(SendDmaHead),
327 .kr_senddmaheadaddr = IPATH_KREG_OFFSET(SendDmaHeadAddr),
328 .kr_senddmabufmask0 = IPATH_KREG_OFFSET(SendDmaBufMask0),
329 .kr_senddmabufmask1 = IPATH_KREG_OFFSET(SendDmaBufMask1),
330 .kr_senddmabufmask2 = IPATH_KREG_OFFSET(SendDmaBufMask2),
331 .kr_senddmastatus = IPATH_KREG_OFFSET(SendDmaStatus),
333 /* SerDes related regs */
334 .kr_ibserdesctrl = IPATH_KREG_OFFSET(IBSerDesCtrl),
335 .kr_ib_epbacc = IPATH_KREG_OFFSET(IbsdEpbAccCtl),
336 .kr_ib_epbtrans = IPATH_KREG_OFFSET(IbsdEpbTransReg),
337 .kr_pcie_epbacc = IPATH_KREG_OFFSET(PcieEpbAccCtl),
338 .kr_pcie_epbtrans = IPATH_KREG_OFFSET(PcieEpbTransCtl),
339 .kr_ib_ddsrxeq = IPATH_KREG_OFFSET(SerDesDDSRXEQ),
342 * These should not be used directly via ipath_read_kreg64(),
343 * use them with ipath_read_kreg64_port()
345 .kr_rcvhdraddr = IPATH_KREG_OFFSET(RcvHdrAddr0),
346 .kr_rcvhdrtailaddr = IPATH_KREG_OFFSET(RcvHdrTailAddr0),
349 * The rcvpktled register controls one of the debug port signals, so
350 * a packet activity LED can be connected to it.
352 .kr_rcvpktledcnt = IPATH_KREG_OFFSET(RcvPktLEDCnt),
353 .kr_pcierbuftestreg0 = IPATH_KREG_OFFSET(PCIeRBufTestReg0),
354 .kr_pcierbuftestreg1 = IPATH_KREG_OFFSET(PCIeRBufTestReg1),
356 .kr_hrtbt_guid = IPATH_KREG_OFFSET(HRTBT_GUID),
357 .kr_ibcddrctrl = IPATH_KREG_OFFSET(IBCDDRCtrl),
358 .kr_ibcddrstatus = IPATH_KREG_OFFSET(IBCDDRStatus),
359 .kr_jintreload = IPATH_KREG_OFFSET(JIntReload)
362 static const struct ipath_cregs ipath_7220_cregs = {
363 .cr_badformatcnt = IPATH_CREG_OFFSET(RxBadFormatCnt),
364 .cr_erricrccnt = IPATH_CREG_OFFSET(RxICRCErrCnt),
365 .cr_errlinkcnt = IPATH_CREG_OFFSET(RxLinkProblemCnt),
366 .cr_errlpcrccnt = IPATH_CREG_OFFSET(RxLPCRCErrCnt),
367 .cr_errpkey = IPATH_CREG_OFFSET(RxPKeyMismatchCnt),
368 .cr_errrcvflowctrlcnt = IPATH_CREG_OFFSET(RxFlowCtrlErrCnt),
369 .cr_err_rlencnt = IPATH_CREG_OFFSET(RxLenErrCnt),
370 .cr_errslencnt = IPATH_CREG_OFFSET(TxLenErrCnt),
371 .cr_errtidfull = IPATH_CREG_OFFSET(RxTIDFullErrCnt),
372 .cr_errtidvalid = IPATH_CREG_OFFSET(RxTIDValidErrCnt),
373 .cr_errvcrccnt = IPATH_CREG_OFFSET(RxVCRCErrCnt),
374 .cr_ibstatuschange = IPATH_CREG_OFFSET(IBStatusChangeCnt),
375 .cr_intcnt = IPATH_CREG_OFFSET(LBIntCnt),
376 .cr_invalidrlencnt = IPATH_CREG_OFFSET(RxMaxMinLenErrCnt),
377 .cr_invalidslencnt = IPATH_CREG_OFFSET(TxMaxMinLenErrCnt),
378 .cr_lbflowstallcnt = IPATH_CREG_OFFSET(LBFlowStallCnt),
379 .cr_pktrcvcnt = IPATH_CREG_OFFSET(RxDataPktCnt),
380 .cr_pktrcvflowctrlcnt = IPATH_CREG_OFFSET(RxFlowPktCnt),
381 .cr_pktsendcnt = IPATH_CREG_OFFSET(TxDataPktCnt),
382 .cr_pktsendflowcnt = IPATH_CREG_OFFSET(TxFlowPktCnt),
383 .cr_portovflcnt = IPATH_CREG_OFFSET(RxP0HdrEgrOvflCnt),
384 .cr_rcvebpcnt = IPATH_CREG_OFFSET(RxEBPCnt),
385 .cr_rcvovflcnt = IPATH_CREG_OFFSET(RxBufOvflCnt),
386 .cr_senddropped = IPATH_CREG_OFFSET(TxDroppedPktCnt),
387 .cr_sendstallcnt = IPATH_CREG_OFFSET(TxFlowStallCnt),
388 .cr_sendunderruncnt = IPATH_CREG_OFFSET(TxUnderrunCnt),
389 .cr_wordrcvcnt = IPATH_CREG_OFFSET(RxDwordCnt),
390 .cr_wordsendcnt = IPATH_CREG_OFFSET(TxDwordCnt),
391 .cr_unsupvlcnt = IPATH_CREG_OFFSET(TxUnsupVLErrCnt),
392 .cr_rxdroppktcnt = IPATH_CREG_OFFSET(RxDroppedPktCnt),
393 .cr_iblinkerrrecovcnt = IPATH_CREG_OFFSET(IBLinkErrRecoveryCnt),
394 .cr_iblinkdowncnt = IPATH_CREG_OFFSET(IBLinkDownedCnt),
395 .cr_ibsymbolerrcnt = IPATH_CREG_OFFSET(IBSymbolErrCnt),
396 .cr_vl15droppedpktcnt = IPATH_CREG_OFFSET(RxVL15DroppedPktCnt),
397 .cr_rxotherlocalphyerrcnt =
398 IPATH_CREG_OFFSET(RxOtherLocalPhyErrCnt),
399 .cr_excessbufferovflcnt = IPATH_CREG_OFFSET(ExcessBufferOvflCnt),
400 .cr_locallinkintegrityerrcnt =
401 IPATH_CREG_OFFSET(LocalLinkIntegrityErrCnt),
402 .cr_rxvlerrcnt = IPATH_CREG_OFFSET(RxVlErrCnt),
403 .cr_rxdlidfltrcnt = IPATH_CREG_OFFSET(RxDlidFltrCnt),
404 .cr_psstat = IPATH_CREG_OFFSET(PSStat),
405 .cr_psstart = IPATH_CREG_OFFSET(PSStart),
406 .cr_psinterval = IPATH_CREG_OFFSET(PSInterval),
407 .cr_psrcvdatacount = IPATH_CREG_OFFSET(PSRcvDataCount),
408 .cr_psrcvpktscount = IPATH_CREG_OFFSET(PSRcvPktsCount),
409 .cr_psxmitdatacount = IPATH_CREG_OFFSET(PSXmitDataCount),
410 .cr_psxmitpktscount = IPATH_CREG_OFFSET(PSXmitPktsCount),
411 .cr_psxmitwaitcount = IPATH_CREG_OFFSET(PSXmitWaitCount),
414 /* kr_control bits */
415 #define INFINIPATH_C_RESET (1U<<7)
417 /* kr_intstatus, kr_intclear, kr_intmask bits */
418 #define INFINIPATH_I_RCVURG_MASK ((1ULL<<17)-1)
419 #define INFINIPATH_I_RCVURG_SHIFT 32
420 #define INFINIPATH_I_RCVAVAIL_MASK ((1ULL<<17)-1)
421 #define INFINIPATH_I_RCVAVAIL_SHIFT 0
422 #define INFINIPATH_I_SERDESTRIMDONE (1ULL<<27)
424 /* kr_hwerrclear, kr_hwerrmask, kr_hwerrstatus, bits */
425 #define INFINIPATH_HWE_PCIEMEMPARITYERR_MASK 0x00000000000000ffULL
426 #define INFINIPATH_HWE_PCIEMEMPARITYERR_SHIFT 0
427 #define INFINIPATH_HWE_PCIEPOISONEDTLP 0x0000000010000000ULL
428 #define INFINIPATH_HWE_PCIECPLTIMEOUT 0x0000000020000000ULL
429 #define INFINIPATH_HWE_PCIEBUSPARITYXTLH 0x0000000040000000ULL
430 #define INFINIPATH_HWE_PCIEBUSPARITYXADM 0x0000000080000000ULL
431 #define INFINIPATH_HWE_PCIEBUSPARITYRADM 0x0000000100000000ULL
432 #define INFINIPATH_HWE_COREPLL_FBSLIP 0x0080000000000000ULL
433 #define INFINIPATH_HWE_COREPLL_RFSLIP 0x0100000000000000ULL
434 #define INFINIPATH_HWE_PCIE1PLLFAILED 0x0400000000000000ULL
435 #define INFINIPATH_HWE_PCIE0PLLFAILED 0x0800000000000000ULL
436 #define INFINIPATH_HWE_SERDESPLLFAILED 0x1000000000000000ULL
437 /* specific to this chip */
438 #define INFINIPATH_HWE_PCIECPLDATAQUEUEERR 0x0000000000000040ULL
439 #define INFINIPATH_HWE_PCIECPLHDRQUEUEERR 0x0000000000000080ULL
440 #define INFINIPATH_HWE_SDMAMEMREADERR 0x0000000010000000ULL
441 #define INFINIPATH_HWE_CLK_UC_PLLNOTLOCKED 0x2000000000000000ULL
442 #define INFINIPATH_HWE_PCIESERDESQ0PCLKNOTDETECT 0x0100000000000000ULL
443 #define INFINIPATH_HWE_PCIESERDESQ1PCLKNOTDETECT 0x0200000000000000ULL
444 #define INFINIPATH_HWE_PCIESERDESQ2PCLKNOTDETECT 0x0400000000000000ULL
445 #define INFINIPATH_HWE_PCIESERDESQ3PCLKNOTDETECT 0x0800000000000000ULL
446 #define INFINIPATH_HWE_DDSRXEQMEMORYPARITYERR 0x0000008000000000ULL
447 #define INFINIPATH_HWE_IB_UC_MEMORYPARITYERR 0x0000004000000000ULL
448 #define INFINIPATH_HWE_PCIE_UC_OCT0MEMORYPARITYERR 0x0000001000000000ULL
449 #define INFINIPATH_HWE_PCIE_UC_OCT1MEMORYPARITYERR 0x0000002000000000ULL
451 #define IBA7220_IBCS_LINKTRAININGSTATE_MASK 0x1F
452 #define IBA7220_IBCS_LINKSTATE_SHIFT 5
453 #define IBA7220_IBCS_LINKSPEED_SHIFT 8
454 #define IBA7220_IBCS_LINKWIDTH_SHIFT 9
456 #define IBA7220_IBCC_LINKINITCMD_MASK 0x7ULL
457 #define IBA7220_IBCC_LINKCMD_SHIFT 19
458 #define IBA7220_IBCC_MAXPKTLEN_SHIFT 21
460 /* kr_ibcddrctrl bits */
461 #define IBA7220_IBC_DLIDLMC_MASK 0xFFFFFFFFUL
462 #define IBA7220_IBC_DLIDLMC_SHIFT 32
463 #define IBA7220_IBC_HRTBT_MASK 3
464 #define IBA7220_IBC_HRTBT_SHIFT 16
465 #define IBA7220_IBC_HRTBT_ENB 0x10000UL
466 #define IBA7220_IBC_LANE_REV_SUPPORTED (1<<8)
467 #define IBA7220_IBC_LREV_MASK 1
468 #define IBA7220_IBC_LREV_SHIFT 8
469 #define IBA7220_IBC_RXPOL_MASK 1
470 #define IBA7220_IBC_RXPOL_SHIFT 7
471 #define IBA7220_IBC_WIDTH_SHIFT 5
472 #define IBA7220_IBC_WIDTH_MASK 0x3
473 #define IBA7220_IBC_WIDTH_1X_ONLY (0<<IBA7220_IBC_WIDTH_SHIFT)
474 #define IBA7220_IBC_WIDTH_4X_ONLY (1<<IBA7220_IBC_WIDTH_SHIFT)
475 #define IBA7220_IBC_WIDTH_AUTONEG (2<<IBA7220_IBC_WIDTH_SHIFT)
476 #define IBA7220_IBC_SPEED_AUTONEG (1<<1)
477 #define IBA7220_IBC_SPEED_SDR (1<<2)
478 #define IBA7220_IBC_SPEED_DDR (1<<3)
479 #define IBA7220_IBC_SPEED_AUTONEG_MASK (0x7<<1)
480 #define IBA7220_IBC_IBTA_1_2_MASK (1)
482 /* kr_ibcddrstatus */
483 /* link latency shift is 0, don't bother defining */
484 #define IBA7220_DDRSTAT_LINKLAT_MASK 0x3ffffff
486 /* kr_extstatus bits */
487 #define INFINIPATH_EXTS_FREQSEL 0x2
488 #define INFINIPATH_EXTS_SERDESSEL 0x4
489 #define INFINIPATH_EXTS_MEMBIST_ENDTEST 0x0000000000004000
490 #define INFINIPATH_EXTS_MEMBIST_DISABLED 0x0000000000008000
492 /* kr_xgxsconfig bits */
493 #define INFINIPATH_XGXS_RESET 0x5ULL
494 #define INFINIPATH_XGXS_FC_SAFE (1ULL<<63)
496 /* kr_rcvpktledcnt */
497 #define IBA7220_LEDBLINK_ON_SHIFT 32 /* 4ns period on after packet */
498 #define IBA7220_LEDBLINK_OFF_SHIFT 0 /* 4ns period off before next on */
500 #define _IPATH_GPIO_SDA_NUM 1
501 #define _IPATH_GPIO_SCL_NUM 0
503 #define IPATH_GPIO_SDA (1ULL << \
504 (_IPATH_GPIO_SDA_NUM+INFINIPATH_EXTC_GPIOOE_SHIFT))
505 #define IPATH_GPIO_SCL (1ULL << \
506 (_IPATH_GPIO_SCL_NUM+INFINIPATH_EXTC_GPIOOE_SHIFT))
508 #define IBA7220_R_INTRAVAIL_SHIFT 17
509 #define IBA7220_R_TAILUPD_SHIFT 35
510 #define IBA7220_R_PORTCFG_SHIFT 36
512 #define INFINIPATH_JINT_PACKETSHIFT 16
513 #define INFINIPATH_JINT_DEFAULT_IDLE_TICKS 0
514 #define INFINIPATH_JINT_DEFAULT_MAX_PACKETS 0
516 #define IBA7220_HDRHEAD_PKTINT_SHIFT 32 /* interrupt cnt in upper 32 bits */
519 * the size bits give us 2^N, in KB units. 0 marks as invalid,
520 * and 7 is reserved. We currently use only 2KB and 4KB
522 #define IBA7220_TID_SZ_SHIFT 37 /* shift to 3bit size selector */
523 #define IBA7220_TID_SZ_2K (1UL<<IBA7220_TID_SZ_SHIFT) /* 2KB */
524 #define IBA7220_TID_SZ_4K (2UL<<IBA7220_TID_SZ_SHIFT) /* 4KB */
525 #define IBA7220_TID_PA_SHIFT 11U /* TID addr in chip stored w/o low bits */
527 #define IPATH_AUTONEG_TRIES 5 /* sequential retries to negotiate DDR */
529 static char int_type[16] = "auto";
530 module_param_string(interrupt_type, int_type, sizeof(int_type), 0444);
531 MODULE_PARM_DESC(int_type, " interrupt_type=auto|force_msi|force_intx\n");
533 /* packet rate matching delay; chip has support */
534 static u8 rate_to_delay[2][2] = {
540 /* 7220 specific hardware errors... */
541 static const struct ipath_hwerror_msgs ipath_7220_hwerror_msgs[] = {
542 INFINIPATH_HWE_MSG(PCIEPOISONEDTLP, "PCIe Poisoned TLP"),
543 INFINIPATH_HWE_MSG(PCIECPLTIMEOUT, "PCIe completion timeout"),
545 * In practice, it's unlikely wthat we'll see PCIe PLL, or bus
546 * parity or memory parity error failures, because most likely we
547 * won't be able to talk to the core of the chip. Nonetheless, we
548 * might see them, if they are in parts of the PCIe core that aren't
551 INFINIPATH_HWE_MSG(PCIE1PLLFAILED, "PCIePLL1"),
552 INFINIPATH_HWE_MSG(PCIE0PLLFAILED, "PCIePLL0"),
553 INFINIPATH_HWE_MSG(PCIEBUSPARITYXTLH, "PCIe XTLH core parity"),
554 INFINIPATH_HWE_MSG(PCIEBUSPARITYXADM, "PCIe ADM TX core parity"),
555 INFINIPATH_HWE_MSG(PCIEBUSPARITYRADM, "PCIe ADM RX core parity"),
556 INFINIPATH_HWE_MSG(RXDSYNCMEMPARITYERR, "Rx Dsync"),
557 INFINIPATH_HWE_MSG(SERDESPLLFAILED, "SerDes PLL"),
558 INFINIPATH_HWE_MSG(PCIECPLDATAQUEUEERR, "PCIe cpl header queue"),
559 INFINIPATH_HWE_MSG(PCIECPLHDRQUEUEERR, "PCIe cpl data queue"),
560 INFINIPATH_HWE_MSG(SDMAMEMREADERR, "Send DMA memory read"),
561 INFINIPATH_HWE_MSG(CLK_UC_PLLNOTLOCKED, "uC PLL clock not locked"),
562 INFINIPATH_HWE_MSG(PCIESERDESQ0PCLKNOTDETECT,
563 "PCIe serdes Q0 no clock"),
564 INFINIPATH_HWE_MSG(PCIESERDESQ1PCLKNOTDETECT,
565 "PCIe serdes Q1 no clock"),
566 INFINIPATH_HWE_MSG(PCIESERDESQ2PCLKNOTDETECT,
567 "PCIe serdes Q2 no clock"),
568 INFINIPATH_HWE_MSG(PCIESERDESQ3PCLKNOTDETECT,
569 "PCIe serdes Q3 no clock"),
570 INFINIPATH_HWE_MSG(DDSRXEQMEMORYPARITYERR,
571 "DDS RXEQ memory parity"),
572 INFINIPATH_HWE_MSG(IB_UC_MEMORYPARITYERR, "IB uC memory parity"),
573 INFINIPATH_HWE_MSG(PCIE_UC_OCT0MEMORYPARITYERR,
574 "PCIe uC oct0 memory parity"),
575 INFINIPATH_HWE_MSG(PCIE_UC_OCT1MEMORYPARITYERR,
576 "PCIe uC oct1 memory parity"),
579 static void autoneg_work(struct work_struct *);
582 * the offset is different for different configured port numbers, since
583 * port0 is fixed in size, but others can vary. Make it a function to
584 * make the issue more obvious.
586 static inline u32 port_egrtid_idx(struct ipath_devdata *dd, unsigned port)
588 return port ? dd->ipath_p0_rcvegrcnt +
589 (port-1) * dd->ipath_rcvegrcnt : 0;
592 static void ipath_7220_txe_recover(struct ipath_devdata *dd)
594 ++ipath_stats.sps_txeparity;
596 dev_info(&dd->pcidev->dev,
597 "Recovering from TXE PIO parity error\n");
598 ipath_disarm_senderrbufs(dd, 1);
603 * ipath_7220_handle_hwerrors - display hardware errors.
604 * @dd: the infinipath device
605 * @msg: the output buffer
606 * @msgl: the size of the output buffer
608 * Use same msg buffer as regular errors to avoid excessive stack
609 * use. Most hardware errors are catastrophic, but for right now,
610 * we'll print them and continue. We reuse the same message buffer as
611 * ipath_handle_errors() to avoid excessive stack usage.
613 static void ipath_7220_handle_hwerrors(struct ipath_devdata *dd, char *msg,
622 hwerrs = ipath_read_kreg64(dd, dd->ipath_kregs->kr_hwerrstatus);
625 * better than printing cofusing messages
626 * This seems to be related to clearing the crc error, or
627 * the pll error during init.
629 ipath_cdbg(VERBOSE, "Called but no hardware errors set\n");
631 } else if (hwerrs == ~0ULL) {
632 ipath_dev_err(dd, "Read of hardware error status failed "
633 "(all bits set); ignoring\n");
636 ipath_stats.sps_hwerrs++;
639 * Always clear the error status register, except MEMBISTFAIL,
640 * regardless of whether we continue or stop using the chip.
641 * We want that set so we know it failed, even across driver reload.
642 * We'll still ignore it in the hwerrmask. We do this partly for
643 * diagnostics, but also for support.
645 ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear,
646 hwerrs&~INFINIPATH_HWE_MEMBISTFAILED);
648 hwerrs &= dd->ipath_hwerrmask;
650 /* We log some errors to EEPROM, check if we have any of those. */
651 for (log_idx = 0; log_idx < IPATH_EEP_LOG_CNT; ++log_idx)
652 if (hwerrs & dd->ipath_eep_st_masks[log_idx].hwerrs_to_log)
653 ipath_inc_eeprom_err(dd, log_idx, 1);
655 * Make sure we get this much out, unless told to be quiet,
656 * or it's occurred within the last 5 seconds.
658 if ((hwerrs & ~(dd->ipath_lasthwerror |
659 ((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF |
660 INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC)
661 << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT))) ||
662 (ipath_debug & __IPATH_VERBDBG))
663 dev_info(&dd->pcidev->dev, "Hardware error: hwerr=0x%llx "
664 "(cleared)\n", (unsigned long long) hwerrs);
665 dd->ipath_lasthwerror |= hwerrs;
667 if (hwerrs & ~dd->ipath_hwe_bitsextant)
668 ipath_dev_err(dd, "hwerror interrupt with unknown errors "
669 "%llx set\n", (unsigned long long)
670 (hwerrs & ~dd->ipath_hwe_bitsextant));
672 if (hwerrs & INFINIPATH_HWE_IB_UC_MEMORYPARITYERR)
673 ipath_sd7220_clr_ibpar(dd);
675 ctrl = ipath_read_kreg32(dd, dd->ipath_kregs->kr_control);
676 if ((ctrl & INFINIPATH_C_FREEZEMODE) && !ipath_diag_inuse) {
678 * Parity errors in send memory are recoverable,
679 * just cancel the send (if indicated in * sendbuffererror),
680 * count the occurrence, unfreeze (if no other handled
681 * hardware error bits are set), and continue.
683 if (hwerrs & ((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF |
684 INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC)
685 << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT)) {
686 ipath_7220_txe_recover(dd);
687 hwerrs &= ~((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF |
688 INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC)
689 << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT);
691 /* else leave in freeze mode */
693 dd->ipath_kregs->kr_control,
700 * If any set that we aren't ignoring only make the
701 * complaint once, in case it's stuck or recurring,
702 * and we get here multiple times
703 * Force link down, so switch knows, and
704 * LEDs are turned off.
706 if (dd->ipath_flags & IPATH_INITTED) {
707 ipath_set_linkstate(dd, IPATH_IB_LINKDOWN);
708 ipath_setup_7220_setextled(dd,
709 INFINIPATH_IBCS_L_STATE_DOWN,
710 INFINIPATH_IBCS_LT_STATE_DISABLED);
711 ipath_dev_err(dd, "Fatal Hardware Error "
712 "(freeze mode), no longer"
713 " usable, SN %.16s\n",
718 * Mark as having had an error for driver, and also
719 * for /sys and status word mapped to user programs.
720 * This marks unit as not usable, until reset.
722 *dd->ipath_statusp &= ~IPATH_STATUS_IB_READY;
723 *dd->ipath_statusp |= IPATH_STATUS_HWERROR;
724 dd->ipath_flags &= ~IPATH_INITTED;
726 ipath_dbg("Clearing freezemode on ignored hardware "
728 ipath_clear_freeze(dd);
734 if (hwerrs & INFINIPATH_HWE_MEMBISTFAILED) {
735 strlcat(msg, "[Memory BIST test failed, "
736 "InfiniPath hardware unusable]", msgl);
737 /* ignore from now on, so disable until driver reloaded */
738 *dd->ipath_statusp |= IPATH_STATUS_HWERROR;
739 dd->ipath_hwerrmask &= ~INFINIPATH_HWE_MEMBISTFAILED;
740 ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask,
741 dd->ipath_hwerrmask);
744 ipath_format_hwerrors(hwerrs,
745 ipath_7220_hwerror_msgs,
746 ARRAY_SIZE(ipath_7220_hwerror_msgs),
749 if (hwerrs & (INFINIPATH_HWE_PCIEMEMPARITYERR_MASK
750 << INFINIPATH_HWE_PCIEMEMPARITYERR_SHIFT)) {
751 bits = (u32) ((hwerrs >>
752 INFINIPATH_HWE_PCIEMEMPARITYERR_SHIFT) &
753 INFINIPATH_HWE_PCIEMEMPARITYERR_MASK);
754 snprintf(bitsmsg, sizeof bitsmsg,
755 "[PCIe Mem Parity Errs %x] ", bits);
756 strlcat(msg, bitsmsg, msgl);
759 #define _IPATH_PLL_FAIL (INFINIPATH_HWE_COREPLL_FBSLIP | \
760 INFINIPATH_HWE_COREPLL_RFSLIP)
762 if (hwerrs & _IPATH_PLL_FAIL) {
763 snprintf(bitsmsg, sizeof bitsmsg,
764 "[PLL failed (%llx), InfiniPath hardware unusable]",
765 (unsigned long long) hwerrs & _IPATH_PLL_FAIL);
766 strlcat(msg, bitsmsg, msgl);
767 /* ignore from now on, so disable until driver reloaded */
768 dd->ipath_hwerrmask &= ~(hwerrs & _IPATH_PLL_FAIL);
769 ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask,
770 dd->ipath_hwerrmask);
773 if (hwerrs & INFINIPATH_HWE_SERDESPLLFAILED) {
775 * If it occurs, it is left masked since the eternal
776 * interface is unused.
778 dd->ipath_hwerrmask &= ~INFINIPATH_HWE_SERDESPLLFAILED;
779 ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask,
780 dd->ipath_hwerrmask);
783 ipath_dev_err(dd, "%s hardware error\n", msg);
785 * For /sys status file. if no trailing } is copied, we'll
786 * know it was truncated.
788 if (isfatal && !ipath_diag_inuse && dd->ipath_freezemsg)
789 snprintf(dd->ipath_freezemsg, dd->ipath_freezelen,
795 * ipath_7220_boardname - fill in the board name
796 * @dd: the infinipath device
797 * @name: the output buffer
798 * @namelen: the size of the output buffer
800 * info is based on the board revision register
802 static int ipath_7220_boardname(struct ipath_devdata *dd, char *name,
806 u8 boardrev = dd->ipath_boardrev;
809 if (boardrev == 15) {
811 * Emulator sometimes comes up all-ones, rather than zero.
814 dd->ipath_boardrev = boardrev;
818 n = "InfiniPath_7220_Emulation";
821 n = "InfiniPath_QLE7240";
824 n = "InfiniPath_QLE7280";
827 n = "InfiniPath_QLE7242";
830 n = "InfiniPath_QEM7240";
833 n = "InfiniPath_QMI7240";
836 n = "InfiniPath_QMI7264";
839 n = "InfiniPath_QMH7240";
842 n = "InfiniPath_QME7240";
845 n = "InfiniPath_QLE7250";
848 n = "InfiniPath_QLE7290";
851 n = "InfiniPath_QEM7250";
854 n = "InfiniPath_QLE-Bringup";
858 "Don't yet know about board with ID %u\n",
860 snprintf(name, namelen, "Unknown_InfiniPath_PCIe_%u",
865 snprintf(name, namelen, "%s", n);
867 if (dd->ipath_majrev != 5 || !dd->ipath_minrev ||
868 dd->ipath_minrev > 2) {
869 ipath_dev_err(dd, "Unsupported InfiniPath hardware "
871 dd->ipath_majrev, dd->ipath_minrev);
873 } else if (dd->ipath_minrev == 1) {
874 /* Rev1 chips are prototype. Complain, but allow use */
875 ipath_dev_err(dd, "Unsupported hardware "
876 "revision %u.%u, Contact support@qlogic.com\n",
877 dd->ipath_majrev, dd->ipath_minrev);
883 * Set here not in ipath_init_*_funcs because we have to do
884 * it after we can read chip registers.
886 dd->ipath_ureg_align = 0x10000; /* 64KB alignment */
892 * ipath_7220_init_hwerrors - enable hardware errors
893 * @dd: the infinipath device
895 * now that we have finished initializing everything that might reasonably
896 * cause a hardware error, and cleared those errors bits as they occur,
897 * we can enable hardware errors in the mask (potentially enabling
898 * freeze mode), and enable hardware errors as errors (along with
899 * everything else) in errormask
901 static void ipath_7220_init_hwerrors(struct ipath_devdata *dd)
906 extsval = ipath_read_kreg64(dd, dd->ipath_kregs->kr_extstatus);
908 if (!(extsval & (INFINIPATH_EXTS_MEMBIST_ENDTEST |
909 INFINIPATH_EXTS_MEMBIST_DISABLED)))
910 ipath_dev_err(dd, "MemBIST did not complete!\n");
911 if (extsval & INFINIPATH_EXTS_MEMBIST_DISABLED)
912 dev_info(&dd->pcidev->dev, "MemBIST is disabled.\n");
914 val = ~0ULL; /* barring bugs, all hwerrors become interrupts, */
916 if (!dd->ipath_boardrev) /* no PLL for Emulator */
917 val &= ~INFINIPATH_HWE_SERDESPLLFAILED;
919 if (dd->ipath_minrev == 1)
920 val &= ~(1ULL << 42); /* TXE LaunchFIFO Parity rev1 issue */
922 val &= ~INFINIPATH_HWE_IB_UC_MEMORYPARITYERR;
923 dd->ipath_hwerrmask = val;
926 * special trigger "error" is for debugging purposes. It
927 * works around a processor/chipset problem. The error
928 * interrupt allows us to count occurrences, but we don't
929 * want to pay the overhead for normal use. Emulation only
931 if (!dd->ipath_boardrev)
932 dd->ipath_maskederrs = INFINIPATH_E_SENDSPECIALTRIGGER;
936 * All detailed interaction with the SerDes has been moved to ipath_sd7220.c
938 * The portion of IBA7220-specific bringup_serdes() that actually deals with
939 * registers and memory within the SerDes itself is ipath_sd7220_init().
943 * ipath_7220_bringup_serdes - bring up the serdes
944 * @dd: the infinipath device
946 static int ipath_7220_bringup_serdes(struct ipath_devdata *dd)
949 u64 val, prev_val, guid;
950 int was_reset; /* Note whether uC was reset */
952 ipath_dbg("Trying to bringup serdes\n");
954 if (ipath_read_kreg64(dd, dd->ipath_kregs->kr_hwerrstatus) &
955 INFINIPATH_HWE_SERDESPLLFAILED) {
956 ipath_dbg("At start, serdes PLL failed bit set "
957 "in hwerrstatus, clearing and continuing\n");
958 ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear,
959 INFINIPATH_HWE_SERDESPLLFAILED);
962 if (!dd->ipath_ibcddrctrl) {
963 /* not on re-init after reset */
964 dd->ipath_ibcddrctrl =
965 ipath_read_kreg64(dd, dd->ipath_kregs->kr_ibcddrctrl);
967 if (dd->ipath_link_speed_enabled ==
968 (IPATH_IB_SDR | IPATH_IB_DDR))
969 dd->ipath_ibcddrctrl |=
970 IBA7220_IBC_SPEED_AUTONEG_MASK |
971 IBA7220_IBC_IBTA_1_2_MASK;
973 dd->ipath_ibcddrctrl |=
974 dd->ipath_link_speed_enabled == IPATH_IB_DDR
975 ? IBA7220_IBC_SPEED_DDR :
976 IBA7220_IBC_SPEED_SDR;
977 if ((dd->ipath_link_width_enabled & (IB_WIDTH_1X |
978 IB_WIDTH_4X)) == (IB_WIDTH_1X | IB_WIDTH_4X))
979 dd->ipath_ibcddrctrl |= IBA7220_IBC_WIDTH_AUTONEG;
981 dd->ipath_ibcddrctrl |=
982 dd->ipath_link_width_enabled == IB_WIDTH_4X
983 ? IBA7220_IBC_WIDTH_4X_ONLY :
984 IBA7220_IBC_WIDTH_1X_ONLY;
986 /* always enable these on driver reload, not sticky */
987 dd->ipath_ibcddrctrl |=
988 IBA7220_IBC_RXPOL_MASK << IBA7220_IBC_RXPOL_SHIFT;
989 dd->ipath_ibcddrctrl |=
990 IBA7220_IBC_HRTBT_MASK << IBA7220_IBC_HRTBT_SHIFT;
992 * automatic lane reversal detection for receive
993 * doesn't work correctly in rev 1, so disable it
994 * on that rev, otherwise enable (disabling not
995 * sticky across reload for >rev1)
997 if (dd->ipath_minrev == 1)
998 dd->ipath_ibcddrctrl &=
999 ~IBA7220_IBC_LANE_REV_SUPPORTED;
1001 dd->ipath_ibcddrctrl |=
1002 IBA7220_IBC_LANE_REV_SUPPORTED;
1005 ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcddrctrl,
1006 dd->ipath_ibcddrctrl);
1008 ipath_write_kreg(dd, IPATH_KREG_OFFSET(IBNCModeCtrl), 0Ull);
1010 /* IBA7220 has SERDES MPU reset in D0 of what _was_ IBPLLCfg */
1011 val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_ibserdesctrl);
1012 /* remember if uC was in Reset or not, for dactrim */
1013 was_reset = (val & 1);
1014 ipath_cdbg(VERBOSE, "IBReset %s xgxsconfig %llx\n",
1015 was_reset ? "Asserted" : "Negated", (unsigned long long)
1016 ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig));
1018 if (dd->ipath_boardrev) {
1020 * Hardware is not emulator, and may have been reset. Init it.
1021 * Below will release reset, but needs to know if chip was
1022 * originally in reset, to only trim DACs on first time
1023 * after chip reset or powercycle (not driver reload)
1025 ret = ipath_sd7220_init(dd, was_reset);
1028 val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig);
1030 val |= INFINIPATH_XGXS_FC_SAFE;
1031 if (val != prev_val) {
1032 ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val);
1033 ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
1035 if (val & INFINIPATH_XGXS_RESET)
1036 val &= ~INFINIPATH_XGXS_RESET;
1037 if (val != prev_val)
1038 ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val);
1040 ipath_cdbg(VERBOSE, "done: xgxs=%llx from %llx\n",
1041 (unsigned long long)
1042 ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig),
1045 guid = be64_to_cpu(dd->ipath_guid);
1048 /* have to have something, so use likely unique tsc */
1049 guid = get_cycles();
1050 ipath_dbg("No GUID for heartbeat, faking %llx\n",
1051 (unsigned long long)guid);
1053 ipath_cdbg(VERBOSE, "Wrote %llX to HRTBT_GUID\n", guid);
1054 ipath_write_kreg(dd, dd->ipath_kregs->kr_hrtbt_guid, guid);
1058 static void ipath_7220_config_jint(struct ipath_devdata *dd,
1059 u16 idle_ticks, u16 max_packets)
1063 * We can request a receive interrupt for 1 or more packets
1064 * from current offset.
1066 if (idle_ticks == 0 || max_packets == 0)
1067 /* interrupt after one packet if no mitigation */
1068 dd->ipath_rhdrhead_intr_off =
1069 1ULL << IBA7220_HDRHEAD_PKTINT_SHIFT;
1071 /* Turn off RcvHdrHead interrupts if using mitigation */
1072 dd->ipath_rhdrhead_intr_off = 0ULL;
1074 /* refresh kernel RcvHdrHead registers... */
1075 ipath_write_ureg(dd, ur_rcvhdrhead,
1076 dd->ipath_rhdrhead_intr_off |
1077 dd->ipath_pd[0]->port_head, 0);
1079 dd->ipath_jint_max_packets = max_packets;
1080 dd->ipath_jint_idle_ticks = idle_ticks;
1081 ipath_write_kreg(dd, dd->ipath_kregs->kr_jintreload,
1082 ((u64) max_packets << INFINIPATH_JINT_PACKETSHIFT) |
1087 * ipath_7220_quiet_serdes - set serdes to txidle
1088 * @dd: the infinipath device
1089 * Called when driver is being unloaded
1091 static void ipath_7220_quiet_serdes(struct ipath_devdata *dd)
1094 dd->ipath_flags &= ~IPATH_IB_AUTONEG_INPROG;
1095 wake_up(&dd->ipath_autoneg_wait);
1096 cancel_delayed_work(&dd->ipath_autoneg_work);
1097 flush_scheduled_work();
1098 ipath_shutdown_relock_poll(dd);
1099 val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig);
1100 val |= INFINIPATH_XGXS_RESET;
1101 ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val);
1104 static int ipath_7220_intconfig(struct ipath_devdata *dd)
1106 ipath_7220_config_jint(dd, dd->ipath_jint_idle_ticks,
1107 dd->ipath_jint_max_packets);
1112 * ipath_setup_7220_setextled - set the state of the two external LEDs
1113 * @dd: the infinipath device
1115 * @ltst: the LT state
1117 * These LEDs indicate the physical and logical state of IB link.
1118 * For this chip (at least with recommended board pinouts), LED1
1119 * is Yellow (logical state) and LED2 is Green (physical state),
1121 * Note: We try to match the Mellanox HCA LED behavior as best
1122 * we can. Green indicates physical link state is OK (something is
1123 * plugged in, and we can train).
1124 * Amber indicates the link is logically up (ACTIVE).
1125 * Mellanox further blinks the amber LED to indicate data packet
1126 * activity, but we have no hardware support for that, so it would
1127 * require waking up every 10-20 msecs and checking the counters
1128 * on the chip, and then turning the LED off if appropriate. That's
1129 * visible overhead, so not something we will do.
1132 static void ipath_setup_7220_setextled(struct ipath_devdata *dd, u64 lst,
1135 u64 extctl, ledblink = 0;
1136 unsigned long flags = 0;
1138 /* the diags use the LED to indicate diag info, so we leave
1139 * the external LED alone when the diags are running */
1140 if (ipath_diag_inuse)
1143 /* Allow override of LED display for, e.g. Locating system in rack */
1144 if (dd->ipath_led_override) {
1145 ltst = (dd->ipath_led_override & IPATH_LED_PHYS)
1146 ? INFINIPATH_IBCS_LT_STATE_LINKUP
1147 : INFINIPATH_IBCS_LT_STATE_DISABLED;
1148 lst = (dd->ipath_led_override & IPATH_LED_LOG)
1149 ? INFINIPATH_IBCS_L_STATE_ACTIVE
1150 : INFINIPATH_IBCS_L_STATE_DOWN;
1153 spin_lock_irqsave(&dd->ipath_gpio_lock, flags);
1154 extctl = dd->ipath_extctrl & ~(INFINIPATH_EXTC_LED1PRIPORT_ON |
1155 INFINIPATH_EXTC_LED2PRIPORT_ON);
1156 if (ltst == INFINIPATH_IBCS_LT_STATE_LINKUP) {
1157 extctl |= INFINIPATH_EXTC_LED1PRIPORT_ON;
1159 * counts are in chip clock (4ns) periods.
1160 * This is 1/16 sec (66.6ms) on,
1161 * 3/16 sec (187.5 ms) off, with packets rcvd
1163 ledblink = ((66600*1000UL/4) << IBA7220_LEDBLINK_ON_SHIFT)
1164 | ((187500*1000UL/4) << IBA7220_LEDBLINK_OFF_SHIFT);
1166 if (lst == INFINIPATH_IBCS_L_STATE_ACTIVE)
1167 extctl |= INFINIPATH_EXTC_LED2PRIPORT_ON;
1168 dd->ipath_extctrl = extctl;
1169 ipath_write_kreg(dd, dd->ipath_kregs->kr_extctrl, extctl);
1170 spin_unlock_irqrestore(&dd->ipath_gpio_lock, flags);
1172 if (ledblink) /* blink the LED on packet receive */
1173 ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvpktledcnt,
1178 * Similar to pci_intx(pdev, 1), except that we make sure
1181 static void ipath_enable_intx(struct pci_dev *pdev)
1186 /* first, turn on INTx */
1187 pci_read_config_word(pdev, PCI_COMMAND, &cw);
1188 new = cw & ~PCI_COMMAND_INTX_DISABLE;
1190 pci_write_config_word(pdev, PCI_COMMAND, new);
1192 /* then turn off MSI */
1193 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
1195 pci_read_config_word(pdev, pos + PCI_MSI_FLAGS, &cw);
1196 new = cw & ~PCI_MSI_FLAGS_ENABLE;
1198 pci_write_config_word(pdev, pos + PCI_MSI_FLAGS, new);
1202 static int ipath_msi_enabled(struct pci_dev *pdev)
1206 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
1210 pci_read_config_word(pdev, pos + PCI_MSI_FLAGS, &cw);
1211 ret = !!(cw & PCI_MSI_FLAGS_ENABLE);
1217 * disable msi interrupt if enabled, and clear the flag.
1218 * flag is used primarily for the fallback to INTx, but
1219 * is also used in reinit after reset as a flag.
1221 static void ipath_7220_nomsi(struct ipath_devdata *dd)
1223 dd->ipath_msi_lo = 0;
1225 if (ipath_msi_enabled(dd->pcidev)) {
1227 * free, but don't zero; later kernels require
1228 * it be freed before disable_msi, so the intx
1229 * setup has to request it again.
1232 free_irq(dd->ipath_irq, dd);
1233 pci_disable_msi(dd->pcidev);
1238 * ipath_setup_7220_cleanup - clean up any per-chip chip-specific stuff
1239 * @dd: the infinipath device
1241 * Nothing but msi interrupt cleanup for now.
1243 * This is called during driver unload.
1245 static void ipath_setup_7220_cleanup(struct ipath_devdata *dd)
1247 ipath_7220_nomsi(dd);
1251 static void ipath_7220_pcie_params(struct ipath_devdata *dd, u32 boardrev)
1253 u16 linkstat, minwidth, speed;
1256 pos = pci_find_capability(dd->pcidev, PCI_CAP_ID_EXP);
1258 ipath_dev_err(dd, "Can't find PCI Express capability!\n");
1262 pci_read_config_word(dd->pcidev, pos + PCI_EXP_LNKSTA,
1265 * speed is bits 0-4, linkwidth is bits 4-8
1266 * no defines for them in headers
1268 speed = linkstat & 0xf;
1271 dd->ipath_lbus_width = linkstat;
1277 minwidth = 16; /* x16 capable boards */
1280 minwidth = 8; /* x8 capable boards */
1286 dd->ipath_lbus_speed = 2500; /* Gen1, 2.5GHz */
1289 dd->ipath_lbus_speed = 5000; /* Gen1, 5GHz */
1291 default: /* not defined, assume gen1 */
1292 dd->ipath_lbus_speed = 2500;
1296 if (linkstat < minwidth)
1298 "PCIe width %u (x%u HCA), performance "
1299 "reduced\n", linkstat, minwidth);
1301 ipath_cdbg(VERBOSE, "PCIe speed %u width %u (x%u HCA)\n",
1302 dd->ipath_lbus_speed, linkstat, minwidth);
1306 "PCIe linkspeed %u is incorrect; "
1307 "should be 1 (2500)!\n", speed);
1310 /* fill in string, even on errors */
1311 snprintf(dd->ipath_lbus_info, sizeof(dd->ipath_lbus_info),
1313 dd->ipath_lbus_speed,
1314 dd->ipath_lbus_width);
1320 * ipath_setup_7220_config - setup PCIe config related stuff
1321 * @dd: the infinipath device
1322 * @pdev: the PCI device
1324 * The pci_enable_msi() call will fail on systems with MSI quirks
1325 * such as those with AMD8131, even if the device of interest is not
1326 * attached to that device, (in the 2.6.13 - 2.6.15 kernels, at least, fixed
1328 * All that can be done is to edit the kernel source to remove the quirk
1329 * check until that is fixed.
1330 * We do not need to call enable_msi() for our HyperTransport chip,
1331 * even though it uses MSI, and we want to avoid the quirk warning, so
1332 * So we call enable_msi only for PCIe. If we do end up needing
1333 * pci_enable_msi at some point in the future for HT, we'll move the
1334 * call back into the main init_one code.
1335 * We save the msi lo and hi values, so we can restore them after
1336 * chip reset (the kernel PCI infrastructure doesn't yet handle that
1339 static int ipath_setup_7220_config(struct ipath_devdata *dd,
1340 struct pci_dev *pdev)
1345 dd->ipath_msi_lo = 0; /* used as a flag during reset processing */
1347 pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
1348 if (!strcmp(int_type, "force_msi") || !strcmp(int_type, "auto"))
1349 ret = pci_enable_msi(pdev);
1351 if (!strcmp(int_type, "force_msi")) {
1352 ipath_dev_err(dd, "pci_enable_msi failed: %d, "
1353 "force_msi is on, so not continuing.\n",
1358 ipath_enable_intx(pdev);
1359 if (!strcmp(int_type, "auto"))
1360 ipath_dev_err(dd, "pci_enable_msi failed: %d, "
1361 "falling back to INTx\n", ret);
1364 pci_read_config_dword(pdev, pos + PCI_MSI_ADDRESS_LO,
1366 pci_read_config_dword(pdev, pos + PCI_MSI_ADDRESS_HI,
1368 pci_read_config_word(pdev, pos + PCI_MSI_FLAGS,
1370 /* now save the data (vector) info */
1371 pci_read_config_word(pdev,
1372 pos + ((control & PCI_MSI_FLAGS_64BIT)
1375 &dd->ipath_msi_data);
1377 ipath_dev_err(dd, "Can't find MSI capability, "
1378 "can't save MSI settings for reset\n");
1380 dd->ipath_irq = pdev->irq;
1383 * We save the cachelinesize also, although it doesn't
1386 pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE,
1387 &dd->ipath_pci_cacheline);
1390 * this function called early, ipath_boardrev not set yet. Can't
1391 * use ipath_read_kreg64() yet, too early in init, so use readq()
1393 boardrev = (readq(&dd->ipath_kregbase[dd->ipath_kregs->kr_revision])
1394 >> INFINIPATH_R_BOARDID_SHIFT) & INFINIPATH_R_BOARDID_MASK;
1396 ipath_7220_pcie_params(dd, boardrev);
1398 dd->ipath_flags |= IPATH_NODMA_RTAIL | IPATH_HAS_SEND_DMA |
1399 IPATH_HAS_PBC_CNT | IPATH_HAS_THRESH_UPDATE;
1400 dd->ipath_pioupd_thresh = 4U; /* set default update threshold */
1404 static void ipath_init_7220_variables(struct ipath_devdata *dd)
1407 * setup the register offsets, since they are different for each
1410 dd->ipath_kregs = &ipath_7220_kregs;
1411 dd->ipath_cregs = &ipath_7220_cregs;
1414 * bits for selecting i2c direction and values,
1415 * used for I2C serial flash
1417 dd->ipath_gpio_sda_num = _IPATH_GPIO_SDA_NUM;
1418 dd->ipath_gpio_scl_num = _IPATH_GPIO_SCL_NUM;
1419 dd->ipath_gpio_sda = IPATH_GPIO_SDA;
1420 dd->ipath_gpio_scl = IPATH_GPIO_SCL;
1423 * Fill in data for field-values that change in IBA7220.
1424 * We dynamically specify only the mask for LINKTRAININGSTATE
1425 * and only the shift for LINKSTATE, as they are the only ones
1426 * that change. Also precalculate the 3 link states of interest
1427 * and the combined mask.
1429 dd->ibcs_ls_shift = IBA7220_IBCS_LINKSTATE_SHIFT;
1430 dd->ibcs_lts_mask = IBA7220_IBCS_LINKTRAININGSTATE_MASK;
1431 dd->ibcs_mask = (INFINIPATH_IBCS_LINKSTATE_MASK <<
1432 dd->ibcs_ls_shift) | dd->ibcs_lts_mask;
1433 dd->ib_init = (INFINIPATH_IBCS_LT_STATE_LINKUP <<
1434 INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) |
1435 (INFINIPATH_IBCS_L_STATE_INIT << dd->ibcs_ls_shift);
1436 dd->ib_arm = (INFINIPATH_IBCS_LT_STATE_LINKUP <<
1437 INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) |
1438 (INFINIPATH_IBCS_L_STATE_ARM << dd->ibcs_ls_shift);
1439 dd->ib_active = (INFINIPATH_IBCS_LT_STATE_LINKUP <<
1440 INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) |
1441 (INFINIPATH_IBCS_L_STATE_ACTIVE << dd->ibcs_ls_shift);
1444 * Fill in data for ibcc field-values that change in IBA7220.
1445 * We dynamically specify only the mask for LINKINITCMD
1446 * and only the shift for LINKCMD and MAXPKTLEN, as they are
1447 * the only ones that change.
1449 dd->ibcc_lic_mask = IBA7220_IBCC_LINKINITCMD_MASK;
1450 dd->ibcc_lc_shift = IBA7220_IBCC_LINKCMD_SHIFT;
1451 dd->ibcc_mpl_shift = IBA7220_IBCC_MAXPKTLEN_SHIFT;
1453 /* Fill in shifts for RcvCtrl. */
1454 dd->ipath_r_portenable_shift = INFINIPATH_R_PORTENABLE_SHIFT;
1455 dd->ipath_r_intravail_shift = IBA7220_R_INTRAVAIL_SHIFT;
1456 dd->ipath_r_tailupd_shift = IBA7220_R_TAILUPD_SHIFT;
1457 dd->ipath_r_portcfg_shift = IBA7220_R_PORTCFG_SHIFT;
1459 /* variables for sanity checking interrupt and errors */
1460 dd->ipath_hwe_bitsextant =
1461 (INFINIPATH_HWE_RXEMEMPARITYERR_MASK <<
1462 INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT) |
1463 (INFINIPATH_HWE_TXEMEMPARITYERR_MASK <<
1464 INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT) |
1465 (INFINIPATH_HWE_PCIEMEMPARITYERR_MASK <<
1466 INFINIPATH_HWE_PCIEMEMPARITYERR_SHIFT) |
1467 INFINIPATH_HWE_PCIE1PLLFAILED |
1468 INFINIPATH_HWE_PCIE0PLLFAILED |
1469 INFINIPATH_HWE_PCIEPOISONEDTLP |
1470 INFINIPATH_HWE_PCIECPLTIMEOUT |
1471 INFINIPATH_HWE_PCIEBUSPARITYXTLH |
1472 INFINIPATH_HWE_PCIEBUSPARITYXADM |
1473 INFINIPATH_HWE_PCIEBUSPARITYRADM |
1474 INFINIPATH_HWE_MEMBISTFAILED |
1475 INFINIPATH_HWE_COREPLL_FBSLIP |
1476 INFINIPATH_HWE_COREPLL_RFSLIP |
1477 INFINIPATH_HWE_SERDESPLLFAILED |
1478 INFINIPATH_HWE_IBCBUSTOSPCPARITYERR |
1479 INFINIPATH_HWE_IBCBUSFRSPCPARITYERR |
1480 INFINIPATH_HWE_PCIECPLDATAQUEUEERR |
1481 INFINIPATH_HWE_PCIECPLHDRQUEUEERR |
1482 INFINIPATH_HWE_SDMAMEMREADERR |
1483 INFINIPATH_HWE_CLK_UC_PLLNOTLOCKED |
1484 INFINIPATH_HWE_PCIESERDESQ0PCLKNOTDETECT |
1485 INFINIPATH_HWE_PCIESERDESQ1PCLKNOTDETECT |
1486 INFINIPATH_HWE_PCIESERDESQ2PCLKNOTDETECT |
1487 INFINIPATH_HWE_PCIESERDESQ3PCLKNOTDETECT |
1488 INFINIPATH_HWE_DDSRXEQMEMORYPARITYERR |
1489 INFINIPATH_HWE_IB_UC_MEMORYPARITYERR |
1490 INFINIPATH_HWE_PCIE_UC_OCT0MEMORYPARITYERR |
1491 INFINIPATH_HWE_PCIE_UC_OCT1MEMORYPARITYERR;
1492 dd->ipath_i_bitsextant =
1493 INFINIPATH_I_SDMAINT | INFINIPATH_I_SDMADISABLED |
1494 (INFINIPATH_I_RCVURG_MASK << INFINIPATH_I_RCVURG_SHIFT) |
1495 (INFINIPATH_I_RCVAVAIL_MASK <<
1496 INFINIPATH_I_RCVAVAIL_SHIFT) |
1497 INFINIPATH_I_ERROR | INFINIPATH_I_SPIOSENT |
1498 INFINIPATH_I_SPIOBUFAVAIL | INFINIPATH_I_GPIO |
1499 INFINIPATH_I_JINT | INFINIPATH_I_SERDESTRIMDONE;
1500 dd->ipath_e_bitsextant =
1501 INFINIPATH_E_RFORMATERR | INFINIPATH_E_RVCRC |
1502 INFINIPATH_E_RICRC | INFINIPATH_E_RMINPKTLEN |
1503 INFINIPATH_E_RMAXPKTLEN | INFINIPATH_E_RLONGPKTLEN |
1504 INFINIPATH_E_RSHORTPKTLEN | INFINIPATH_E_RUNEXPCHAR |
1505 INFINIPATH_E_RUNSUPVL | INFINIPATH_E_REBP |
1506 INFINIPATH_E_RIBFLOW | INFINIPATH_E_RBADVERSION |
1507 INFINIPATH_E_RRCVEGRFULL | INFINIPATH_E_RRCVHDRFULL |
1508 INFINIPATH_E_RBADTID | INFINIPATH_E_RHDRLEN |
1509 INFINIPATH_E_RHDR | INFINIPATH_E_RIBLOSTLINK |
1510 INFINIPATH_E_SENDSPECIALTRIGGER |
1511 INFINIPATH_E_SDMADISABLED | INFINIPATH_E_SMINPKTLEN |
1512 INFINIPATH_E_SMAXPKTLEN | INFINIPATH_E_SUNDERRUN |
1513 INFINIPATH_E_SPKTLEN | INFINIPATH_E_SDROPPEDSMPPKT |
1514 INFINIPATH_E_SDROPPEDDATAPKT |
1515 INFINIPATH_E_SPIOARMLAUNCH | INFINIPATH_E_SUNEXPERRPKTNUM |
1516 INFINIPATH_E_SUNSUPVL | INFINIPATH_E_SENDBUFMISUSE |
1517 INFINIPATH_E_SDMAGENMISMATCH | INFINIPATH_E_SDMAOUTOFBOUND |
1518 INFINIPATH_E_SDMATAILOUTOFBOUND | INFINIPATH_E_SDMABASE |
1519 INFINIPATH_E_SDMA1STDESC | INFINIPATH_E_SDMARPYTAG |
1520 INFINIPATH_E_SDMADWEN | INFINIPATH_E_SDMAMISSINGDW |
1521 INFINIPATH_E_SDMAUNEXPDATA |
1522 INFINIPATH_E_IBSTATUSCHANGED | INFINIPATH_E_INVALIDADDR |
1523 INFINIPATH_E_RESET | INFINIPATH_E_HARDWARE |
1524 INFINIPATH_E_SDMADESCADDRMISALIGN |
1525 INFINIPATH_E_INVALIDEEPCMD;
1527 dd->ipath_i_rcvavail_mask = INFINIPATH_I_RCVAVAIL_MASK;
1528 dd->ipath_i_rcvurg_mask = INFINIPATH_I_RCVURG_MASK;
1529 dd->ipath_i_rcvavail_shift = INFINIPATH_I_RCVAVAIL_SHIFT;
1530 dd->ipath_i_rcvurg_shift = INFINIPATH_I_RCVURG_SHIFT;
1531 dd->ipath_flags |= IPATH_INTREG_64 | IPATH_HAS_MULT_IB_SPEED
1532 | IPATH_HAS_LINK_LATENCY;
1535 * EEPROM error log 0 is TXE Parity errors. 1 is RXE Parity.
1536 * 2 is Some Misc, 3 is reserved for future.
1538 dd->ipath_eep_st_masks[0].hwerrs_to_log =
1539 INFINIPATH_HWE_TXEMEMPARITYERR_MASK <<
1540 INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT;
1542 dd->ipath_eep_st_masks[1].hwerrs_to_log =
1543 INFINIPATH_HWE_RXEMEMPARITYERR_MASK <<
1544 INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT;
1546 dd->ipath_eep_st_masks[2].errs_to_log = INFINIPATH_E_RESET;
1548 ipath_linkrecovery = 0;
1550 init_waitqueue_head(&dd->ipath_autoneg_wait);
1551 INIT_DELAYED_WORK(&dd->ipath_autoneg_work, autoneg_work);
1553 dd->ipath_link_width_supported = IB_WIDTH_1X | IB_WIDTH_4X;
1554 dd->ipath_link_speed_supported = IPATH_IB_SDR | IPATH_IB_DDR;
1556 dd->ipath_link_width_enabled = dd->ipath_link_width_supported;
1557 dd->ipath_link_speed_enabled = dd->ipath_link_speed_supported;
1559 * set the initial values to reasonable default, will be set
1560 * for real when link is up.
1562 dd->ipath_link_width_active = IB_WIDTH_4X;
1563 dd->ipath_link_speed_active = IPATH_IB_SDR;
1564 dd->delay_mult = rate_to_delay[0][1];
1569 * Setup the MSI stuff again after a reset. I'd like to just call
1570 * pci_enable_msi() and request_irq() again, but when I do that,
1571 * the MSI enable bit doesn't get set in the command word, and
1572 * we switch to to a different interrupt vector, which is confusing,
1573 * so I instead just do it all inline. Perhaps somehow can tie this
1574 * into the PCIe hotplug support at some point
1575 * Note, because I'm doing it all here, I don't call pci_disable_msi()
1576 * or free_irq() at the start of ipath_setup_7220_reset().
1578 static int ipath_reinit_msi(struct ipath_devdata *dd)
1584 if (!dd->ipath_msi_lo) /* Using intX, or init problem */
1587 pos = pci_find_capability(dd->pcidev, PCI_CAP_ID_MSI);
1589 ipath_dev_err(dd, "Can't find MSI capability, "
1590 "can't restore MSI settings\n");
1593 ipath_cdbg(VERBOSE, "Writing msi_lo 0x%x to config offset 0x%x\n",
1594 dd->ipath_msi_lo, pos + PCI_MSI_ADDRESS_LO);
1595 pci_write_config_dword(dd->pcidev, pos + PCI_MSI_ADDRESS_LO,
1597 ipath_cdbg(VERBOSE, "Writing msi_lo 0x%x to config offset 0x%x\n",
1598 dd->ipath_msi_hi, pos + PCI_MSI_ADDRESS_HI);
1599 pci_write_config_dword(dd->pcidev, pos + PCI_MSI_ADDRESS_HI,
1601 pci_read_config_word(dd->pcidev, pos + PCI_MSI_FLAGS, &control);
1602 if (!(control & PCI_MSI_FLAGS_ENABLE)) {
1603 ipath_cdbg(VERBOSE, "MSI control at off %x was %x, "
1604 "setting MSI enable (%x)\n", pos + PCI_MSI_FLAGS,
1605 control, control | PCI_MSI_FLAGS_ENABLE);
1606 control |= PCI_MSI_FLAGS_ENABLE;
1607 pci_write_config_word(dd->pcidev, pos + PCI_MSI_FLAGS,
1610 /* now rewrite the data (vector) info */
1611 pci_write_config_word(dd->pcidev, pos +
1612 ((control & PCI_MSI_FLAGS_64BIT) ? 12 : 8),
1613 dd->ipath_msi_data);
1618 ipath_dbg("Using INTx, MSI disabled or not configured\n");
1619 ipath_enable_intx(dd->pcidev);
1623 * We restore the cachelinesize also, although it doesn't really
1626 pci_write_config_byte(dd->pcidev, PCI_CACHE_LINE_SIZE,
1627 dd->ipath_pci_cacheline);
1628 /* and now set the pci master bit again */
1629 pci_set_master(dd->pcidev);
1635 * This routine sleeps, so it can only be called from user context, not
1636 * from interrupt context. If we need interrupt context, we can split
1637 * it into two routines.
1639 static int ipath_setup_7220_reset(struct ipath_devdata *dd)
1646 pci_read_config_word(dd->pcidev, PCI_COMMAND, &cmdval);
1648 /* Use dev_err so it shows up in logs, etc. */
1649 ipath_dev_err(dd, "Resetting InfiniPath unit %u\n", dd->ipath_unit);
1651 /* keep chip from being accessed in a few places */
1652 dd->ipath_flags &= ~(IPATH_INITTED | IPATH_PRESENT);
1653 val = dd->ipath_control | INFINIPATH_C_RESET;
1654 ipath_write_kreg(dd, dd->ipath_kregs->kr_control, val);
1657 for (i = 1; i <= 5; i++) {
1661 * Allow MBIST, etc. to complete; longer on each retry.
1662 * We sometimes get machine checks from bus timeout if no
1663 * response, so for now, make it *really* long.
1665 msleep(1000 + (1 + i) * 2000);
1666 r = pci_write_config_dword(dd->pcidev, PCI_BASE_ADDRESS_0,
1669 ipath_dev_err(dd, "rewrite of BAR0 failed: %d\n", r);
1670 r = pci_write_config_dword(dd->pcidev, PCI_BASE_ADDRESS_1,
1673 ipath_dev_err(dd, "rewrite of BAR1 failed: %d\n", r);
1674 /* now re-enable memory access */
1675 pci_write_config_word(dd->pcidev, PCI_COMMAND, cmdval);
1676 r = pci_enable_device(dd->pcidev);
1678 ipath_dev_err(dd, "pci_enable_device failed after "
1681 * whether it fully enabled or not, mark as present,
1682 * again (but not INITTED)
1684 dd->ipath_flags |= IPATH_PRESENT;
1685 val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_revision);
1686 if (val == dd->ipath_revision) {
1687 ipath_cdbg(VERBOSE, "Got matching revision "
1688 "register %llx on try %d\n",
1689 (unsigned long long) val, i);
1690 ret = ipath_reinit_msi(dd);
1693 /* Probably getting -1 back */
1694 ipath_dbg("Didn't get expected revision register, "
1695 "got %llx, try %d\n", (unsigned long long) val,
1698 ret = 0; /* failed */
1702 ipath_7220_pcie_params(dd, dd->ipath_boardrev);
1708 * ipath_7220_put_tid - write a TID to the chip
1709 * @dd: the infinipath device
1710 * @tidptr: pointer to the expected TID (in chip) to udpate
1711 * @tidtype: 0 for eager, 1 for expected
1712 * @pa: physical address of in memory buffer; ipath_tidinvalid if freeing
1714 * This exists as a separate routine to allow for selection of the
1715 * appropriate "flavor". The static calls in cleanup just use the
1716 * revision-agnostic form, as they are not performance critical.
1718 static void ipath_7220_put_tid(struct ipath_devdata *dd, u64 __iomem *tidptr,
1719 u32 type, unsigned long pa)
1721 if (pa != dd->ipath_tidinvalid) {
1722 u64 chippa = pa >> IBA7220_TID_PA_SHIFT;
1724 /* paranoia checks */
1725 if (pa != (chippa << IBA7220_TID_PA_SHIFT)) {
1726 dev_info(&dd->pcidev->dev, "BUG: physaddr %lx "
1727 "not 2KB aligned!\n", pa);
1730 if (pa >= (1UL << IBA7220_TID_SZ_SHIFT)) {
1732 "BUG: Physical page address 0x%lx "
1733 "larger than supported\n", pa);
1737 if (type == RCVHQ_RCV_TYPE_EAGER)
1738 chippa |= dd->ipath_tidtemplate;
1739 else /* for now, always full 4KB page */
1740 chippa |= IBA7220_TID_SZ_4K;
1741 writeq(chippa, tidptr);
1748 * ipath_7220_clear_tid - clear all TID entries for a port, expected and eager
1749 * @dd: the infinipath device
1752 * clear all TID entries for a port, expected and eager.
1753 * Used from ipath_close(). On this chip, TIDs are only 32 bits,
1754 * not 64, but they are still on 64 bit boundaries, so tidbase
1755 * is declared as u64 * for the pointer math, even though we write 32 bits
1757 static void ipath_7220_clear_tids(struct ipath_devdata *dd, unsigned port)
1759 u64 __iomem *tidbase;
1760 unsigned long tidinv;
1763 if (!dd->ipath_kregbase)
1766 ipath_cdbg(VERBOSE, "Invalidate TIDs for port %u\n", port);
1768 tidinv = dd->ipath_tidinvalid;
1769 tidbase = (u64 __iomem *)
1770 ((char __iomem *)(dd->ipath_kregbase) +
1771 dd->ipath_rcvtidbase +
1772 port * dd->ipath_rcvtidcnt * sizeof(*tidbase));
1774 for (i = 0; i < dd->ipath_rcvtidcnt; i++)
1775 ipath_7220_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EXPECTED,
1778 tidbase = (u64 __iomem *)
1779 ((char __iomem *)(dd->ipath_kregbase) +
1780 dd->ipath_rcvegrbase + port_egrtid_idx(dd, port)
1781 * sizeof(*tidbase));
1783 for (i = port ? dd->ipath_rcvegrcnt : dd->ipath_p0_rcvegrcnt; i; i--)
1784 ipath_7220_put_tid(dd, &tidbase[i-1], RCVHQ_RCV_TYPE_EAGER,
1789 * ipath_7220_tidtemplate - setup constants for TID updates
1790 * @dd: the infinipath device
1792 * We setup stuff that we use a lot, to avoid calculating each time
1794 static void ipath_7220_tidtemplate(struct ipath_devdata *dd)
1796 /* For now, we always allocate 4KB buffers (at init) so we can
1797 * receive max size packets. We may want a module parameter to
1798 * specify 2KB or 4KB and/or make be per port instead of per device
1799 * for those who want to reduce memory footprint. Note that the
1800 * ipath_rcvhdrentsize size must be large enough to hold the largest
1801 * IB header (currently 96 bytes) that we expect to handle (plus of
1802 * course the 2 dwords of RHF).
1804 if (dd->ipath_rcvegrbufsize == 2048)
1805 dd->ipath_tidtemplate = IBA7220_TID_SZ_2K;
1806 else if (dd->ipath_rcvegrbufsize == 4096)
1807 dd->ipath_tidtemplate = IBA7220_TID_SZ_4K;
1809 dev_info(&dd->pcidev->dev, "BUG: unsupported egrbufsize "
1810 "%u, using %u\n", dd->ipath_rcvegrbufsize,
1812 dd->ipath_tidtemplate = IBA7220_TID_SZ_4K;
1814 dd->ipath_tidinvalid = 0;
1817 static int ipath_7220_early_init(struct ipath_devdata *dd)
1821 if (strcmp(int_type, "auto") &&
1822 strcmp(int_type, "force_msi") &&
1823 strcmp(int_type, "force_intx")) {
1824 ipath_dev_err(dd, "Invalid interrupt_type: '%s', expecting "
1825 "auto, force_msi or force_intx\n", int_type);
1830 * Control[4] has been added to change the arbitration within
1831 * the SDMA engine between favoring data fetches over descriptor
1832 * fetches. ipath_sdma_fetch_arb==0 gives data fetches priority.
1834 if (ipath_sdma_fetch_arb && (dd->ipath_minrev > 1))
1835 dd->ipath_control |= 1<<4;
1837 dd->ipath_flags |= IPATH_4BYTE_TID;
1840 * For openfabrics, we need to be able to handle an IB header of
1841 * 24 dwords. HT chip has arbitrary sized receive buffers, so we
1842 * made them the same size as the PIO buffers. This chip does not
1843 * handle arbitrary size buffers, so we need the header large enough
1844 * to handle largest IB header, but still have room for a 2KB MTU
1845 * standard IB packet.
1847 dd->ipath_rcvhdrentsize = 24;
1848 dd->ipath_rcvhdrsize = IPATH_DFLT_RCVHDRSIZE;
1849 dd->ipath_rhf_offset =
1850 dd->ipath_rcvhdrentsize - sizeof(u64) / sizeof(u32);
1852 dd->ipath_rcvegrbufsize = ipath_mtu4096 ? 4096 : 2048;
1854 * the min() check here is currently a nop, but it may not always
1855 * be, depending on just how we do ipath_rcvegrbufsize
1857 dd->ipath_ibmaxlen = min(ipath_mtu4096 ? dd->ipath_piosize4k :
1858 dd->ipath_piosize2k,
1859 dd->ipath_rcvegrbufsize +
1860 (dd->ipath_rcvhdrentsize << 2));
1861 dd->ipath_init_ibmaxlen = dd->ipath_ibmaxlen;
1863 ipath_7220_config_jint(dd, INFINIPATH_JINT_DEFAULT_IDLE_TICKS,
1864 INFINIPATH_JINT_DEFAULT_MAX_PACKETS);
1866 if (dd->ipath_boardrev) /* no eeprom on emulator */
1867 ipath_get_eeprom_info(dd);
1869 /* start of code to check and print procmon */
1870 s = ipath_read_kreg32(dd, IPATH_KREG_OFFSET(ProcMon));
1871 s &= ~(1U<<31); /* clear done bit */
1872 s |= 1U<<14; /* clear counter (write 1 to clear) */
1873 ipath_write_kreg(dd, IPATH_KREG_OFFSET(ProcMon), s);
1874 /* make sure clear_counter low long enough before start */
1875 ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
1876 ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
1878 s &= ~(1U<<14); /* allow counter to count (before starting) */
1879 ipath_write_kreg(dd, IPATH_KREG_OFFSET(ProcMon), s);
1880 ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
1881 ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
1882 s = ipath_read_kreg32(dd, IPATH_KREG_OFFSET(ProcMon));
1884 s |= 1U<<15; /* start the counter */
1885 s &= ~(1U<<31); /* clear done bit */
1886 s &= ~0x7ffU; /* clear frequency bits */
1887 s |= 0xe29; /* set frequency bits, in case cleared */
1888 ipath_write_kreg(dd, IPATH_KREG_OFFSET(ProcMon), s);
1891 for (i = 500; i > 0 && !(s&(1ULL<<31)); i--) {
1892 ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
1893 s = ipath_read_kreg32(dd, IPATH_KREG_OFFSET(ProcMon));
1896 ipath_dev_err(dd, "ProcMon register not valid: 0x%x\n", s);
1898 ipath_dbg("ProcMon=0x%x, count=0x%x\n", s, (s>>16)&0x1ff);
1904 * ipath_init_7220_get_base_info - set chip-specific flags for user code
1905 * @pd: the infinipath port
1906 * @kbase: ipath_base_info pointer
1908 * We set the PCIE flag because the lower bandwidth on PCIe vs
1909 * HyperTransport can affect some user packet algorithims.
1911 static int ipath_7220_get_base_info(struct ipath_portdata *pd, void *kbase)
1913 struct ipath_base_info *kinfo = kbase;
1915 kinfo->spi_runtime_flags |=
1916 IPATH_RUNTIME_PCIE | IPATH_RUNTIME_NODMA_RTAIL |
1922 static void ipath_7220_free_irq(struct ipath_devdata *dd)
1924 free_irq(dd->ipath_irq, dd);
1928 static struct ipath_message_header *
1929 ipath_7220_get_msgheader(struct ipath_devdata *dd, __le32 *rhf_addr)
1931 u32 offset = ipath_hdrget_offset(rhf_addr);
1933 return (struct ipath_message_header *)
1934 (rhf_addr - dd->ipath_rhf_offset + offset);
1937 static void ipath_7220_config_ports(struct ipath_devdata *dd, ushort cfgports)
1941 nchipports = ipath_read_kreg32(dd, dd->ipath_kregs->kr_portcnt);
1943 int ncpus = num_online_cpus();
1946 dd->ipath_portcnt = 5;
1947 else if (ncpus <= 8)
1948 dd->ipath_portcnt = 9;
1949 if (dd->ipath_portcnt)
1950 ipath_dbg("Auto-configured for %u ports, %d cpus "
1951 "online\n", dd->ipath_portcnt, ncpus);
1952 } else if (cfgports <= nchipports)
1953 dd->ipath_portcnt = cfgports;
1954 if (!dd->ipath_portcnt) /* none of the above, set to max */
1955 dd->ipath_portcnt = nchipports;
1957 * chip can be configured for 5, 9, or 17 ports, and choice
1958 * affects number of eager TIDs per port (1K, 2K, 4K).
1960 if (dd->ipath_portcnt > 9)
1961 dd->ipath_rcvctrl |= 2ULL << IBA7220_R_PORTCFG_SHIFT;
1962 else if (dd->ipath_portcnt > 5)
1963 dd->ipath_rcvctrl |= 1ULL << IBA7220_R_PORTCFG_SHIFT;
1964 /* else configure for default 5 receive ports */
1965 ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl,
1967 dd->ipath_p0_rcvegrcnt = 2048; /* always */
1968 if (dd->ipath_flags & IPATH_HAS_SEND_DMA)
1969 dd->ipath_pioreserved = 1; /* reserve a buffer */
1973 static int ipath_7220_get_ib_cfg(struct ipath_devdata *dd, int which)
1976 u64 maskr; /* right-justified mask */
1979 case IPATH_IB_CFG_HRTBT: /* Get Heartbeat off/enable/auto */
1980 lsb = IBA7220_IBC_HRTBT_SHIFT;
1981 maskr = IBA7220_IBC_HRTBT_MASK;
1984 case IPATH_IB_CFG_LWID_ENB: /* Get allowed Link-width */
1985 ret = dd->ipath_link_width_enabled;
1988 case IPATH_IB_CFG_LWID: /* Get currently active Link-width */
1989 ret = dd->ipath_link_width_active;
1992 case IPATH_IB_CFG_SPD_ENB: /* Get allowed Link speeds */
1993 ret = dd->ipath_link_speed_enabled;
1996 case IPATH_IB_CFG_SPD: /* Get current Link spd */
1997 ret = dd->ipath_link_speed_active;
2000 case IPATH_IB_CFG_RXPOL_ENB: /* Get Auto-RX-polarity enable */
2001 lsb = IBA7220_IBC_RXPOL_SHIFT;
2002 maskr = IBA7220_IBC_RXPOL_MASK;
2005 case IPATH_IB_CFG_LREV_ENB: /* Get Auto-Lane-reversal enable */
2006 lsb = IBA7220_IBC_LREV_SHIFT;
2007 maskr = IBA7220_IBC_LREV_MASK;
2010 case IPATH_IB_CFG_LINKLATENCY:
2011 ret = ipath_read_kreg64(dd, dd->ipath_kregs->kr_ibcddrstatus)
2012 & IBA7220_DDRSTAT_LINKLAT_MASK;
2019 ret = (int)((dd->ipath_ibcddrctrl >> lsb) & maskr);
2024 static int ipath_7220_set_ib_cfg(struct ipath_devdata *dd, int which, u32 val)
2026 int lsb, ret = 0, setforce = 0;
2027 u64 maskr; /* right-justified mask */
2030 case IPATH_IB_CFG_LIDLMC:
2032 * Set LID and LMC. Combined to avoid possible hazard
2033 * caller puts LMC in 16MSbits, DLID in 16LSbits of val
2035 lsb = IBA7220_IBC_DLIDLMC_SHIFT;
2036 maskr = IBA7220_IBC_DLIDLMC_MASK;
2039 case IPATH_IB_CFG_HRTBT: /* set Heartbeat off/enable/auto */
2040 if (val & IPATH_IB_HRTBT_ON &&
2041 (dd->ipath_flags & IPATH_NO_HRTBT))
2043 lsb = IBA7220_IBC_HRTBT_SHIFT;
2044 maskr = IBA7220_IBC_HRTBT_MASK;
2047 case IPATH_IB_CFG_LWID_ENB: /* set allowed Link-width */
2049 * As with speed, only write the actual register if
2050 * the link is currently down, otherwise takes effect
2051 * on next link change.
2053 dd->ipath_link_width_enabled = val;
2054 if ((dd->ipath_flags & (IPATH_LINKDOWN|IPATH_LINKINIT)) !=
2058 * We set the IPATH_IB_FORCE_NOTIFY bit so updown
2059 * will get called because we want update
2060 * link_width_active, and the change may not take
2061 * effect for some time (if we are in POLL), so this
2062 * flag will force the updown routine to be called
2063 * on the next ibstatuschange down interrupt, even
2064 * if it's not an down->up transition.
2066 val--; /* convert from IB to chip */
2067 maskr = IBA7220_IBC_WIDTH_MASK;
2068 lsb = IBA7220_IBC_WIDTH_SHIFT;
2070 dd->ipath_flags |= IPATH_IB_FORCE_NOTIFY;
2073 case IPATH_IB_CFG_SPD_ENB: /* set allowed Link speeds */
2075 * If we turn off IB1.2, need to preset SerDes defaults,
2076 * but not right now. Set a flag for the next time
2077 * we command the link down. As with width, only write the
2078 * actual register if the link is currently down, otherwise
2079 * takes effect on next link change. Since setting is being
2080 * explictly requested (via MAD or sysfs), clear autoneg
2081 * failure status if speed autoneg is enabled.
2083 dd->ipath_link_speed_enabled = val;
2084 if (dd->ipath_ibcddrctrl & IBA7220_IBC_IBTA_1_2_MASK &&
2086 dd->ipath_presets_needed = 1;
2087 if ((dd->ipath_flags & (IPATH_LINKDOWN|IPATH_LINKINIT)) !=
2091 * We set the IPATH_IB_FORCE_NOTIFY bit so updown
2092 * will get called because we want update
2093 * link_speed_active, and the change may not take
2094 * effect for some time (if we are in POLL), so this
2095 * flag will force the updown routine to be called
2096 * on the next ibstatuschange down interrupt, even
2097 * if it's not an down->up transition. When setting
2098 * speed autoneg, clear AUTONEG_FAILED.
2100 if (val == (IPATH_IB_SDR | IPATH_IB_DDR)) {
2101 val = IBA7220_IBC_SPEED_AUTONEG_MASK |
2102 IBA7220_IBC_IBTA_1_2_MASK;
2103 dd->ipath_flags &= ~IPATH_IB_AUTONEG_FAILED;
2105 val = val == IPATH_IB_DDR ? IBA7220_IBC_SPEED_DDR
2106 : IBA7220_IBC_SPEED_SDR;
2107 maskr = IBA7220_IBC_SPEED_AUTONEG_MASK |
2108 IBA7220_IBC_IBTA_1_2_MASK;
2109 lsb = 0; /* speed bits are low bits */
2113 case IPATH_IB_CFG_RXPOL_ENB: /* set Auto-RX-polarity enable */
2114 lsb = IBA7220_IBC_RXPOL_SHIFT;
2115 maskr = IBA7220_IBC_RXPOL_MASK;
2118 case IPATH_IB_CFG_LREV_ENB: /* set Auto-Lane-reversal enable */
2119 lsb = IBA7220_IBC_LREV_SHIFT;
2120 maskr = IBA7220_IBC_LREV_MASK;
2127 dd->ipath_ibcddrctrl &= ~(maskr << lsb);
2128 dd->ipath_ibcddrctrl |= (((u64) val & maskr) << lsb);
2129 ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcddrctrl,
2130 dd->ipath_ibcddrctrl);
2132 dd->ipath_flags |= IPATH_IB_FORCE_NOTIFY;
2137 static void ipath_7220_read_counters(struct ipath_devdata *dd,
2138 struct infinipath_counters *cntrs)
2140 u64 *counters = (u64 *) cntrs;
2143 for (i = 0; i < sizeof(*cntrs) / sizeof(u64); i++)
2144 counters[i] = ipath_snap_cntr(dd, i);
2147 /* if we are using MSI, try to fallback to INTx */
2148 static int ipath_7220_intr_fallback(struct ipath_devdata *dd)
2150 if (dd->ipath_msi_lo) {
2151 dev_info(&dd->pcidev->dev, "MSI interrupt not detected,"
2152 " trying INTx interrupts\n");
2153 ipath_7220_nomsi(dd);
2154 ipath_enable_intx(dd->pcidev);
2156 * some newer kernels require free_irq before disable_msi,
2157 * and irq can be changed during disable and intx enable
2158 * and we need to therefore use the pcidev->irq value,
2159 * not our saved MSI value.
2161 dd->ipath_irq = dd->pcidev->irq;
2162 if (request_irq(dd->ipath_irq, ipath_intr, IRQF_SHARED,
2163 IPATH_DRV_NAME, dd))
2165 "Could not re-request_irq for INTx\n");
2172 * reset the XGXS (between serdes and IBC). Slightly less intrusive
2173 * than resetting the IBC or external link state, and useful in some
2174 * cases to cause some retraining. To do this right, we reset IBC
2177 static void ipath_7220_xgxs_reset(struct ipath_devdata *dd)
2181 prev_val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig);
2182 val = prev_val | INFINIPATH_XGXS_RESET;
2183 prev_val &= ~INFINIPATH_XGXS_RESET; /* be sure */
2184 ipath_write_kreg(dd, dd->ipath_kregs->kr_control,
2185 dd->ipath_control & ~INFINIPATH_C_LINKENABLE);
2186 ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val);
2187 ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
2188 ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, prev_val);
2189 ipath_write_kreg(dd, dd->ipath_kregs->kr_control,
2194 /* Still needs cleanup, too much hardwired stuff */
2195 static void autoneg_send(struct ipath_devdata *dd,
2196 u32 *hdr, u32 dcnt, u32 *data)
2200 u32 __iomem *piobuf;
2204 cnt = 7 + dcnt + 1; /* 7 dword header, dword data, icrc */
2205 while (!(piobuf = ipath_getpiobuf(dd, cnt, &pnum))) {
2207 ipath_dbg("Couldn't get pio buffer for send\n");
2212 if (dd->ipath_flags&IPATH_HAS_PBC_CNT)
2213 cnt |= 0x80000000UL<<32; /* mark as VL15 */
2214 writeq(cnt, piobuf);
2216 __iowrite32_copy(piobuf + 2, hdr, 7);
2217 __iowrite32_copy(piobuf + 9, data, dcnt);
2222 * _start packet gets sent twice at start, _done gets sent twice at end
2224 static void ipath_autoneg_send(struct ipath_devdata *dd, int which)
2227 u32 dw, i, hcnt, dcnt, *data;
2228 static u32 hdr[7] = { 0xf002ffff, 0x48ffff, 0x6400abba };
2229 static u32 madpayload_start[0x40] = {
2230 0x1810103, 0x1, 0x0, 0x0, 0x2c90000, 0x2c9, 0x0, 0x0,
2231 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
2232 0x1, 0x1388, 0x15e, 0x1, /* rest 0's */
2234 static u32 madpayload_done[0x40] = {
2235 0x1810103, 0x1, 0x0, 0x0, 0x2c90000, 0x2c9, 0x0, 0x0,
2236 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
2237 0x40000001, 0x1388, 0x15e, /* rest 0's */
2239 dcnt = sizeof(madpayload_start)/sizeof(madpayload_start[0]);
2240 hcnt = sizeof(hdr)/sizeof(hdr[0]);
2242 /* for maintainability, do it at runtime */
2243 for (i = 0; i < hcnt; i++) {
2244 dw = (__force u32) cpu_to_be32(hdr[i]);
2247 for (i = 0; i < dcnt; i++) {
2248 dw = (__force u32) cpu_to_be32(madpayload_start[i]);
2249 madpayload_start[i] = dw;
2250 dw = (__force u32) cpu_to_be32(madpayload_done[i]);
2251 madpayload_done[i] = dw;
2256 data = which ? madpayload_done : madpayload_start;
2257 ipath_cdbg(PKT, "Sending %s special MADs\n", which?"done":"start");
2259 autoneg_send(dd, hdr, dcnt, data);
2260 ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch);
2262 autoneg_send(dd, hdr, dcnt, data);
2263 ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch);
2270 * Do the absolute minimum to cause an IB speed change, and make it
2271 * ready, but don't actually trigger the change. The caller will
2272 * do that when ready (if link is in Polling training state, it will
2273 * happen immediately, otherwise when link next goes down)
2275 * This routine should only be used as part of the DDR autonegotation
2276 * code for devices that are not compliant with IB 1.2 (or code that
2277 * fixes things up for same).
2279 * When link has gone down, and autoneg enabled, or autoneg has
2280 * failed and we give up until next time we set both speeds, and
2281 * then we want IBTA enabled as well as "use max enabled speed.
2283 static void set_speed_fast(struct ipath_devdata *dd, u32 speed)
2285 dd->ipath_ibcddrctrl &= ~(IBA7220_IBC_SPEED_AUTONEG_MASK |
2286 IBA7220_IBC_IBTA_1_2_MASK |
2287 (IBA7220_IBC_WIDTH_MASK << IBA7220_IBC_WIDTH_SHIFT));
2289 if (speed == (IPATH_IB_SDR | IPATH_IB_DDR))
2290 dd->ipath_ibcddrctrl |= IBA7220_IBC_SPEED_AUTONEG_MASK |
2291 IBA7220_IBC_IBTA_1_2_MASK;
2293 dd->ipath_ibcddrctrl |= speed == IPATH_IB_DDR ?
2294 IBA7220_IBC_SPEED_DDR : IBA7220_IBC_SPEED_SDR;
2297 * Convert from IB-style 1 = 1x, 2 = 4x, 3 = auto
2298 * to chip-centric 0 = 1x, 1 = 4x, 2 = auto
2300 dd->ipath_ibcddrctrl |= (u64)(dd->ipath_link_width_enabled - 1) <<
2301 IBA7220_IBC_WIDTH_SHIFT;
2302 ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcddrctrl,
2303 dd->ipath_ibcddrctrl);
2304 ipath_cdbg(VERBOSE, "setup for IB speed (%x) done\n", speed);
2309 * this routine is only used when we are not talking to another
2310 * IB 1.2-compliant device that we think can do DDR.
2311 * (This includes all existing switch chips as of Oct 2007.)
2312 * 1.2-compliant devices go directly to DDR prior to reaching INIT
2314 static void try_auto_neg(struct ipath_devdata *dd)
2317 * required for older non-IB1.2 DDR switches. Newer
2318 * non-IB-compliant switches don't need it, but so far,
2319 * aren't bothered by it either. "Magic constant"
2321 ipath_write_kreg(dd, IPATH_KREG_OFFSET(IBNCModeCtrl),
2323 dd->ipath_flags |= IPATH_IB_AUTONEG_INPROG;
2324 ipath_autoneg_send(dd, 0);
2325 set_speed_fast(dd, IPATH_IB_DDR);
2326 ipath_toggle_rclkrls(dd);
2327 /* 2 msec is minimum length of a poll cycle */
2328 schedule_delayed_work(&dd->ipath_autoneg_work,
2329 msecs_to_jiffies(2));
2333 static int ipath_7220_ib_updown(struct ipath_devdata *dd, int ibup, u64 ibcs)
2336 u32 ltstate = ipath_ib_linkstate(dd, ibcs);
2338 dd->ipath_link_width_active =
2339 ((ibcs >> IBA7220_IBCS_LINKWIDTH_SHIFT) & 1) ?
2340 IB_WIDTH_4X : IB_WIDTH_1X;
2341 dd->ipath_link_speed_active =
2342 ((ibcs >> IBA7220_IBCS_LINKSPEED_SHIFT) & 1) ?
2343 IPATH_IB_DDR : IPATH_IB_SDR;
2347 * when link goes down we don't want aeq running, so it
2348 * won't't interfere with IBC training, etc., and we need
2349 * to go back to the static SerDes preset values
2351 if (dd->ipath_x1_fix_tries &&
2352 ltstate <= INFINIPATH_IBCS_LT_STATE_SLEEPQUIET &&
2353 ltstate != INFINIPATH_IBCS_LT_STATE_LINKUP)
2354 dd->ipath_x1_fix_tries = 0;
2355 if (!(dd->ipath_flags & (IPATH_IB_AUTONEG_FAILED |
2356 IPATH_IB_AUTONEG_INPROG)))
2357 set_speed_fast(dd, dd->ipath_link_speed_enabled);
2358 if (!(dd->ipath_flags & IPATH_IB_AUTONEG_INPROG)) {
2359 ipath_cdbg(VERBOSE, "Setting RXEQ defaults\n");
2360 ipath_sd7220_presets(dd);
2362 /* this might better in ipath_sd7220_presets() */
2363 ipath_set_relock_poll(dd, ibup);
2365 if (ipath_compat_ddr_negotiate &&
2366 !(dd->ipath_flags & (IPATH_IB_AUTONEG_FAILED |
2367 IPATH_IB_AUTONEG_INPROG)) &&
2368 dd->ipath_link_speed_active == IPATH_IB_SDR &&
2369 (dd->ipath_link_speed_enabled &
2370 (IPATH_IB_DDR | IPATH_IB_SDR)) ==
2371 (IPATH_IB_DDR | IPATH_IB_SDR) &&
2372 dd->ipath_autoneg_tries < IPATH_AUTONEG_TRIES) {
2373 /* we are SDR, and DDR auto-negotiation enabled */
2374 ++dd->ipath_autoneg_tries;
2375 ipath_dbg("DDR negotiation try, %u/%u\n",
2376 dd->ipath_autoneg_tries,
2377 IPATH_AUTONEG_TRIES);
2379 ret = 1; /* no other IB status change processing */
2380 } else if ((dd->ipath_flags & IPATH_IB_AUTONEG_INPROG)
2381 && dd->ipath_link_speed_active == IPATH_IB_SDR) {
2382 ipath_autoneg_send(dd, 1);
2383 set_speed_fast(dd, IPATH_IB_DDR);
2385 ipath_toggle_rclkrls(dd);
2386 ret = 1; /* no other IB status change processing */
2388 if ((dd->ipath_flags & IPATH_IB_AUTONEG_INPROG) &&
2389 (dd->ipath_link_speed_active & IPATH_IB_DDR)) {
2390 ipath_dbg("Got to INIT with DDR autoneg\n");
2391 dd->ipath_flags &= ~(IPATH_IB_AUTONEG_INPROG
2392 | IPATH_IB_AUTONEG_FAILED);
2393 dd->ipath_autoneg_tries = 0;
2394 /* re-enable SDR, for next link down */
2396 dd->ipath_link_speed_enabled);
2397 wake_up(&dd->ipath_autoneg_wait);
2398 } else if (dd->ipath_flags & IPATH_IB_AUTONEG_FAILED) {
2400 * clear autoneg failure flag, and do setup
2401 * so we'll try next time link goes down and
2402 * back to INIT (possibly connected to different
2405 ipath_dbg("INIT %sDR after autoneg failure\n",
2406 (dd->ipath_link_speed_active &
2407 IPATH_IB_DDR) ? "D" : "S");
2408 dd->ipath_flags &= ~IPATH_IB_AUTONEG_FAILED;
2409 dd->ipath_ibcddrctrl |=
2410 IBA7220_IBC_IBTA_1_2_MASK;
2411 ipath_write_kreg(dd,
2412 IPATH_KREG_OFFSET(IBNCModeCtrl), 0);
2416 * if we are in 1X, and are in autoneg width, it
2417 * could be due to an xgxs problem, so if we haven't
2418 * already tried, try twice to get to 4X; if we
2419 * tried, and couldn't, report it, since it will
2420 * probably not be what is desired.
2422 if ((dd->ipath_link_width_enabled & (IB_WIDTH_1X |
2423 IB_WIDTH_4X)) == (IB_WIDTH_1X | IB_WIDTH_4X)
2424 && dd->ipath_link_width_active == IB_WIDTH_1X
2425 && dd->ipath_x1_fix_tries < 3) {
2426 if (++dd->ipath_x1_fix_tries == 3)
2427 dev_info(&dd->pcidev->dev,
2428 "IB link is in 1X mode\n");
2430 ipath_cdbg(VERBOSE, "IB 1X in "
2431 "auto-width, try %u to be "
2432 "sure it's really 1X; "
2434 dd->ipath_x1_fix_tries,
2436 dd->ipath_f_xgxs_reset(dd);
2437 ret = 1; /* skip other processing */
2442 dd->delay_mult = rate_to_delay
2443 [(ibcs >> IBA7220_IBCS_LINKSPEED_SHIFT) & 1]
2444 [(ibcs >> IBA7220_IBCS_LINKWIDTH_SHIFT) & 1];
2446 ipath_set_relock_poll(dd, ibup);
2451 ipath_setup_7220_setextled(dd, ipath_ib_linkstate(dd, ibcs),
2458 * Handle the empirically determined mechanism for auto-negotiation
2459 * of DDR speed with switches.
2461 static void autoneg_work(struct work_struct *work)
2463 struct ipath_devdata *dd;
2467 dd = container_of(work, struct ipath_devdata,
2468 ipath_autoneg_work.work);
2470 startms = jiffies_to_msecs(jiffies);
2473 * busy wait for this first part, it should be at most a
2474 * few hundred usec, since we scheduled ourselves for 2msec.
2476 for (i = 0; i < 25; i++) {
2477 lastlts = ipath_ib_linktrstate(dd, dd->ipath_lastibcstat);
2478 if (lastlts == INFINIPATH_IBCS_LT_STATE_POLLQUIET) {
2479 ipath_set_linkstate(dd, IPATH_IB_LINKDOWN_DISABLE);
2485 if (!(dd->ipath_flags & IPATH_IB_AUTONEG_INPROG))
2486 goto done; /* we got there early or told to stop */
2488 /* we expect this to timeout */
2489 if (wait_event_timeout(dd->ipath_autoneg_wait,
2490 !(dd->ipath_flags & IPATH_IB_AUTONEG_INPROG),
2491 msecs_to_jiffies(90)))
2494 ipath_toggle_rclkrls(dd);
2496 /* we expect this to timeout */
2497 if (wait_event_timeout(dd->ipath_autoneg_wait,
2498 !(dd->ipath_flags & IPATH_IB_AUTONEG_INPROG),
2499 msecs_to_jiffies(1700)))
2502 set_speed_fast(dd, IPATH_IB_SDR);
2503 ipath_toggle_rclkrls(dd);
2506 * wait up to 250 msec for link to train and get to INIT at DDR;
2507 * this should terminate early
2509 wait_event_timeout(dd->ipath_autoneg_wait,
2510 !(dd->ipath_flags & IPATH_IB_AUTONEG_INPROG),
2511 msecs_to_jiffies(250));
2513 if (dd->ipath_flags & IPATH_IB_AUTONEG_INPROG) {
2514 ipath_dbg("Did not get to DDR INIT (%x) after %Lu msecs\n",
2515 ipath_ib_state(dd, dd->ipath_lastibcstat),
2516 jiffies_to_msecs(jiffies)-startms);
2517 dd->ipath_flags &= ~IPATH_IB_AUTONEG_INPROG;
2518 if (dd->ipath_autoneg_tries == IPATH_AUTONEG_TRIES) {
2519 dd->ipath_flags |= IPATH_IB_AUTONEG_FAILED;
2520 ipath_dbg("Giving up on DDR until next IB "
2522 dd->ipath_autoneg_tries = 0;
2524 set_speed_fast(dd, dd->ipath_link_speed_enabled);
2530 * ipath_init_iba7220_funcs - set up the chip-specific function pointers
2531 * @dd: the infinipath device
2533 * This is global, and is called directly at init to set up the
2534 * chip-specific function pointers for later use.
2536 void ipath_init_iba7220_funcs(struct ipath_devdata *dd)
2538 dd->ipath_f_intrsetup = ipath_7220_intconfig;
2539 dd->ipath_f_bus = ipath_setup_7220_config;
2540 dd->ipath_f_reset = ipath_setup_7220_reset;
2541 dd->ipath_f_get_boardname = ipath_7220_boardname;
2542 dd->ipath_f_init_hwerrors = ipath_7220_init_hwerrors;
2543 dd->ipath_f_early_init = ipath_7220_early_init;
2544 dd->ipath_f_handle_hwerrors = ipath_7220_handle_hwerrors;
2545 dd->ipath_f_quiet_serdes = ipath_7220_quiet_serdes;
2546 dd->ipath_f_bringup_serdes = ipath_7220_bringup_serdes;
2547 dd->ipath_f_clear_tids = ipath_7220_clear_tids;
2548 dd->ipath_f_put_tid = ipath_7220_put_tid;
2549 dd->ipath_f_cleanup = ipath_setup_7220_cleanup;
2550 dd->ipath_f_setextled = ipath_setup_7220_setextled;
2551 dd->ipath_f_get_base_info = ipath_7220_get_base_info;
2552 dd->ipath_f_free_irq = ipath_7220_free_irq;
2553 dd->ipath_f_tidtemplate = ipath_7220_tidtemplate;
2554 dd->ipath_f_intr_fallback = ipath_7220_intr_fallback;
2555 dd->ipath_f_xgxs_reset = ipath_7220_xgxs_reset;
2556 dd->ipath_f_get_ib_cfg = ipath_7220_get_ib_cfg;
2557 dd->ipath_f_set_ib_cfg = ipath_7220_set_ib_cfg;
2558 dd->ipath_f_config_jint = ipath_7220_config_jint;
2559 dd->ipath_f_config_ports = ipath_7220_config_ports;
2560 dd->ipath_f_read_counters = ipath_7220_read_counters;
2561 dd->ipath_f_get_msgheader = ipath_7220_get_msgheader;
2562 dd->ipath_f_ib_updown = ipath_7220_ib_updown;
2564 /* initialize chip-specific variables */
2565 ipath_init_7220_variables(dd);
projects / linux-2.6 / blob