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Staging: zram: fix up some sysfs attribute permissions
[zen-stable.git] / drivers / infiniband / hw / qib / qib_iba7322.c
blob584d443b5335978df67b66ca2d15e12d73c8d733
1 /*
2 * Copyright (c) 2008, 2009, 2010 QLogic Corporation. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32
33 /*
34 * This file contains all of the code that is specific to the
35 * InfiniPath 7322 chip
36 */
37
38 #include <linux/interrupt.h>
39 #include <linux/pci.h>
40 #include <linux/delay.h>
41 #include <linux/io.h>
42 #include <linux/jiffies.h>
43 #include <rdma/ib_verbs.h>
44 #include <rdma/ib_smi.h>
45
46 #include "qib.h"
47 #include "qib_7322_regs.h"
48 #include "qib_qsfp.h"
49
50 #include "qib_mad.h"
51
52 static void qib_setup_7322_setextled(struct qib_pportdata *, u32);
53 static void qib_7322_handle_hwerrors(struct qib_devdata *, char *, size_t);
54 static void sendctrl_7322_mod(struct qib_pportdata *ppd, u32 op);
55 static irqreturn_t qib_7322intr(int irq, void *data);
56 static irqreturn_t qib_7322bufavail(int irq, void *data);
57 static irqreturn_t sdma_intr(int irq, void *data);
58 static irqreturn_t sdma_idle_intr(int irq, void *data);
59 static irqreturn_t sdma_progress_intr(int irq, void *data);
60 static irqreturn_t sdma_cleanup_intr(int irq, void *data);
61 static void qib_7322_txchk_change(struct qib_devdata *, u32, u32, u32,
62 struct qib_ctxtdata *rcd);
63 static u8 qib_7322_phys_portstate(u64);
64 static u32 qib_7322_iblink_state(u64);
65 static void qib_set_ib_7322_lstate(struct qib_pportdata *ppd, u16 linkcmd,
66 u16 linitcmd);
67 static void force_h1(struct qib_pportdata *);
68 static void adj_tx_serdes(struct qib_pportdata *);
69 static u32 qib_7322_setpbc_control(struct qib_pportdata *, u32, u8, u8);
70 static void qib_7322_mini_pcs_reset(struct qib_pportdata *);
71
72 static u32 ahb_mod(struct qib_devdata *, int, int, int, u32, u32);
73 static void ibsd_wr_allchans(struct qib_pportdata *, int, unsigned, unsigned);
74
75 #define BMASK(msb, lsb) (((1 << ((msb) + 1 - (lsb))) - 1) << (lsb))
76
77 /* LE2 serdes values for different cases */
78 #define LE2_DEFAULT 5
79 #define LE2_5m 4
80 #define LE2_QME 0
81
82 /* Below is special-purpose, so only really works for the IB SerDes blocks. */
83 #define IBSD(hw_pidx) (hw_pidx + 2)
84
85 /* these are variables for documentation and experimentation purposes */
86 static const unsigned rcv_int_timeout = 375;
87 static const unsigned rcv_int_count = 16;
88 static const unsigned sdma_idle_cnt = 64;
89
90 /* Time to stop altering Rx Equalization parameters, after link up. */
91 #define RXEQ_DISABLE_MSECS 2500
92
93 /*
94 * Number of VLs we are configured to use (to allow for more
95 * credits per vl, etc.)
96 */
97 ushort qib_num_cfg_vls = 2;
98 module_param_named(num_vls, qib_num_cfg_vls, ushort, S_IRUGO);
99 MODULE_PARM_DESC(num_vls, "Set number of Virtual Lanes to use (1-8)");
100
101 static ushort qib_chase = 1;
102 module_param_named(chase, qib_chase, ushort, S_IRUGO);
103 MODULE_PARM_DESC(chase, "Enable state chase handling");
104
105 static ushort qib_long_atten = 10; /* 10 dB ~= 5m length */
106 module_param_named(long_attenuation, qib_long_atten, ushort, S_IRUGO);
107 MODULE_PARM_DESC(long_attenuation, \
108 "attenuation cutoff (dB) for long copper cable setup");
109
110 static ushort qib_singleport;
111 module_param_named(singleport, qib_singleport, ushort, S_IRUGO);
112 MODULE_PARM_DESC(singleport, "Use only IB port 1; more per-port buffer space");
113
114 #define MAX_ATTEN_LEN 64 /* plenty for any real system */
115 /* for read back, default index is ~5m copper cable */
116 static char txselect_list[MAX_ATTEN_LEN] = "10";
117 static struct kparam_string kp_txselect = {
118 .string = txselect_list,
119 .maxlen = MAX_ATTEN_LEN
120 };
121 static int setup_txselect(const char *, struct kernel_param *);
122 module_param_call(txselect, setup_txselect, param_get_string,
123 &kp_txselect, S_IWUSR | S_IRUGO);
124 MODULE_PARM_DESC(txselect, \
125 "Tx serdes indices (for no QSFP or invalid QSFP data)");
126
127 #define BOARD_QME7342 5
128 #define BOARD_QMH7342 6
129 #define IS_QMH(dd) (SYM_FIELD((dd)->revision, Revision, BoardID) == \
130 BOARD_QMH7342)
131 #define IS_QME(dd) (SYM_FIELD((dd)->revision, Revision, BoardID) == \
132 BOARD_QME7342)
133
134 #define KREG_IDX(regname) (QIB_7322_##regname##_OFFS / sizeof(u64))
135
136 #define KREG_IBPORT_IDX(regname) ((QIB_7322_##regname##_0_OFFS / sizeof(u64)))
137
138 #define MASK_ACROSS(lsb, msb) \
139 (((1ULL << ((msb) + 1 - (lsb))) - 1) << (lsb))
140
141 #define SYM_RMASK(regname, fldname) ((u64) \
142 QIB_7322_##regname##_##fldname##_RMASK)
143
144 #define SYM_MASK(regname, fldname) ((u64) \
145 QIB_7322_##regname##_##fldname##_RMASK << \
146 QIB_7322_##regname##_##fldname##_LSB)
147
148 #define SYM_FIELD(value, regname, fldname) ((u64) \
149 (((value) >> SYM_LSB(regname, fldname)) & \
150 SYM_RMASK(regname, fldname)))
151
152 /* useful for things like LaFifoEmpty_0...7, TxCreditOK_0...7, etc. */
153 #define SYM_FIELD_ACROSS(value, regname, fldname, nbits) \
154 (((value) >> SYM_LSB(regname, fldname)) & MASK_ACROSS(0, nbits))
155
156 #define HWE_MASK(fldname) SYM_MASK(HwErrMask, fldname##Mask)
157 #define ERR_MASK(fldname) SYM_MASK(ErrMask, fldname##Mask)
158 #define ERR_MASK_N(fldname) SYM_MASK(ErrMask_0, fldname##Mask)
159 #define INT_MASK(fldname) SYM_MASK(IntMask, fldname##IntMask)
160 #define INT_MASK_P(fldname, port) SYM_MASK(IntMask, fldname##IntMask##_##port)
161 /* Below because most, but not all, fields of IntMask have that full suffix */
162 #define INT_MASK_PM(fldname, port) SYM_MASK(IntMask, fldname##Mask##_##port)
163
164
165 #define SYM_LSB(regname, fldname) (QIB_7322_##regname##_##fldname##_LSB)
166
167 /*
168 * the size bits give us 2^N, in KB units. 0 marks as invalid,
169 * and 7 is reserved. We currently use only 2KB and 4KB
170 */
171 #define IBA7322_TID_SZ_SHIFT QIB_7322_RcvTIDArray0_RT_BufSize_LSB
172 #define IBA7322_TID_SZ_2K (1UL<<IBA7322_TID_SZ_SHIFT) /* 2KB */
173 #define IBA7322_TID_SZ_4K (2UL<<IBA7322_TID_SZ_SHIFT) /* 4KB */
174 #define IBA7322_TID_PA_SHIFT 11U /* TID addr in chip stored w/o low bits */
175
176 #define SendIBSLIDAssignMask \
177 QIB_7322_SendIBSLIDAssign_0_SendIBSLIDAssign_15_0_RMASK
178 #define SendIBSLMCMask \
179 QIB_7322_SendIBSLIDMask_0_SendIBSLIDMask_15_0_RMASK
180
181 #define ExtLED_IB1_YEL SYM_MASK(EXTCtrl, LEDPort0YellowOn)
182 #define ExtLED_IB1_GRN SYM_MASK(EXTCtrl, LEDPort0GreenOn)
183 #define ExtLED_IB2_YEL SYM_MASK(EXTCtrl, LEDPort1YellowOn)
184 #define ExtLED_IB2_GRN SYM_MASK(EXTCtrl, LEDPort1GreenOn)
185 #define ExtLED_IB1_MASK (ExtLED_IB1_YEL | ExtLED_IB1_GRN)
186 #define ExtLED_IB2_MASK (ExtLED_IB2_YEL | ExtLED_IB2_GRN)
187
188 #define _QIB_GPIO_SDA_NUM 1
189 #define _QIB_GPIO_SCL_NUM 0
190 #define QIB_EEPROM_WEN_NUM 14
191 #define QIB_TWSI_EEPROM_DEV 0xA2 /* All Production 7322 cards. */
192
193 /* HW counter clock is at 4nsec */
194 #define QIB_7322_PSXMITWAIT_CHECK_RATE 4000
195
196 /* full speed IB port 1 only */
197 #define PORT_SPD_CAP (QIB_IB_SDR | QIB_IB_DDR | QIB_IB_QDR)
198 #define PORT_SPD_CAP_SHIFT 3
199
200 /* full speed featuremask, both ports */
201 #define DUAL_PORT_CAP (PORT_SPD_CAP | (PORT_SPD_CAP << PORT_SPD_CAP_SHIFT))
202
203 /*
204 * This file contains almost all the chip-specific register information and
205 * access functions for the FAKED QLogic InfiniPath 7322 PCI-Express chip.
206 */
207
208 /* Use defines to tie machine-generated names to lower-case names */
209 #define kr_contextcnt KREG_IDX(ContextCnt)
210 #define kr_control KREG_IDX(Control)
211 #define kr_counterregbase KREG_IDX(CntrRegBase)
212 #define kr_errclear KREG_IDX(ErrClear)
213 #define kr_errmask KREG_IDX(ErrMask)
214 #define kr_errstatus KREG_IDX(ErrStatus)
215 #define kr_extctrl KREG_IDX(EXTCtrl)
216 #define kr_extstatus KREG_IDX(EXTStatus)
217 #define kr_gpio_clear KREG_IDX(GPIOClear)
218 #define kr_gpio_mask KREG_IDX(GPIOMask)
219 #define kr_gpio_out KREG_IDX(GPIOOut)
220 #define kr_gpio_status KREG_IDX(GPIOStatus)
221 #define kr_hwdiagctrl KREG_IDX(HwDiagCtrl)
222 #define kr_debugportval KREG_IDX(DebugPortValueReg)
223 #define kr_fmask KREG_IDX(feature_mask)
224 #define kr_act_fmask KREG_IDX(active_feature_mask)
225 #define kr_hwerrclear KREG_IDX(HwErrClear)
226 #define kr_hwerrmask KREG_IDX(HwErrMask)
227 #define kr_hwerrstatus KREG_IDX(HwErrStatus)
228 #define kr_intclear KREG_IDX(IntClear)
229 #define kr_intmask KREG_IDX(IntMask)
230 #define kr_intredirect KREG_IDX(IntRedirect0)
231 #define kr_intstatus KREG_IDX(IntStatus)
232 #define kr_pagealign KREG_IDX(PageAlign)
233 #define kr_rcvavailtimeout KREG_IDX(RcvAvailTimeOut0)
234 #define kr_rcvctrl KREG_IDX(RcvCtrl) /* Common, but chip also has per-port */
235 #define kr_rcvegrbase KREG_IDX(RcvEgrBase)
236 #define kr_rcvegrcnt KREG_IDX(RcvEgrCnt)
237 #define kr_rcvhdrcnt KREG_IDX(RcvHdrCnt)
238 #define kr_rcvhdrentsize KREG_IDX(RcvHdrEntSize)
239 #define kr_rcvhdrsize KREG_IDX(RcvHdrSize)
240 #define kr_rcvtidbase KREG_IDX(RcvTIDBase)
241 #define kr_rcvtidcnt KREG_IDX(RcvTIDCnt)
242 #define kr_revision KREG_IDX(Revision)
243 #define kr_scratch KREG_IDX(Scratch)
244 #define kr_sendbuffererror KREG_IDX(SendBufErr0) /* and base for 1 and 2 */
245 #define kr_sendcheckmask KREG_IDX(SendCheckMask0) /* and 1, 2 */
246 #define kr_sendctrl KREG_IDX(SendCtrl)
247 #define kr_sendgrhcheckmask KREG_IDX(SendGRHCheckMask0) /* and 1, 2 */
248 #define kr_sendibpktmask KREG_IDX(SendIBPacketMask0) /* and 1, 2 */
249 #define kr_sendpioavailaddr KREG_IDX(SendBufAvailAddr)
250 #define kr_sendpiobufbase KREG_IDX(SendBufBase)
251 #define kr_sendpiobufcnt KREG_IDX(SendBufCnt)
252 #define kr_sendpiosize KREG_IDX(SendBufSize)
253 #define kr_sendregbase KREG_IDX(SendRegBase)
254 #define kr_sendbufavail0 KREG_IDX(SendBufAvail0)
255 #define kr_userregbase KREG_IDX(UserRegBase)
256 #define kr_intgranted KREG_IDX(Int_Granted)
257 #define kr_vecclr_wo_int KREG_IDX(vec_clr_without_int)
258 #define kr_intblocked KREG_IDX(IntBlocked)
259 #define kr_r_access KREG_IDX(SPC_JTAG_ACCESS_REG)
260
261 /*
262 * per-port kernel registers. Access only with qib_read_kreg_port()
263 * or qib_write_kreg_port()
264 */
265 #define krp_errclear KREG_IBPORT_IDX(ErrClear)
266 #define krp_errmask KREG_IBPORT_IDX(ErrMask)
267 #define krp_errstatus KREG_IBPORT_IDX(ErrStatus)
268 #define krp_highprio_0 KREG_IBPORT_IDX(HighPriority0)
269 #define krp_highprio_limit KREG_IBPORT_IDX(HighPriorityLimit)
270 #define krp_hrtbt_guid KREG_IBPORT_IDX(HRTBT_GUID)
271 #define krp_ib_pcsconfig KREG_IBPORT_IDX(IBPCSConfig)
272 #define krp_ibcctrl_a KREG_IBPORT_IDX(IBCCtrlA)
273 #define krp_ibcctrl_b KREG_IBPORT_IDX(IBCCtrlB)
274 #define krp_ibcctrl_c KREG_IBPORT_IDX(IBCCtrlC)
275 #define krp_ibcstatus_a KREG_IBPORT_IDX(IBCStatusA)
276 #define krp_ibcstatus_b KREG_IBPORT_IDX(IBCStatusB)
277 #define krp_txestatus KREG_IBPORT_IDX(TXEStatus)
278 #define krp_lowprio_0 KREG_IBPORT_IDX(LowPriority0)
279 #define krp_ncmodectrl KREG_IBPORT_IDX(IBNCModeCtrl)
280 #define krp_partitionkey KREG_IBPORT_IDX(RcvPartitionKey)
281 #define krp_psinterval KREG_IBPORT_IDX(PSInterval)
282 #define krp_psstart KREG_IBPORT_IDX(PSStart)
283 #define krp_psstat KREG_IBPORT_IDX(PSStat)
284 #define krp_rcvbthqp KREG_IBPORT_IDX(RcvBTHQP)
285 #define krp_rcvctrl KREG_IBPORT_IDX(RcvCtrl)
286 #define krp_rcvpktledcnt KREG_IBPORT_IDX(RcvPktLEDCnt)
287 #define krp_rcvqpmaptable KREG_IBPORT_IDX(RcvQPMapTableA)
288 #define krp_rxcreditvl0 KREG_IBPORT_IDX(RxCreditVL0)
289 #define krp_rxcreditvl15 (KREG_IBPORT_IDX(RxCreditVL0)+15)
290 #define krp_sendcheckcontrol KREG_IBPORT_IDX(SendCheckControl)
291 #define krp_sendctrl KREG_IBPORT_IDX(SendCtrl)
292 #define krp_senddmabase KREG_IBPORT_IDX(SendDmaBase)
293 #define krp_senddmabufmask0 KREG_IBPORT_IDX(SendDmaBufMask0)
294 #define krp_senddmabufmask1 (KREG_IBPORT_IDX(SendDmaBufMask0) + 1)
295 #define krp_senddmabufmask2 (KREG_IBPORT_IDX(SendDmaBufMask0) + 2)
296 #define krp_senddmabuf_use0 KREG_IBPORT_IDX(SendDmaBufUsed0)
297 #define krp_senddmabuf_use1 (KREG_IBPORT_IDX(SendDmaBufUsed0) + 1)
298 #define krp_senddmabuf_use2 (KREG_IBPORT_IDX(SendDmaBufUsed0) + 2)
299 #define krp_senddmadesccnt KREG_IBPORT_IDX(SendDmaDescCnt)
300 #define krp_senddmahead KREG_IBPORT_IDX(SendDmaHead)
301 #define krp_senddmaheadaddr KREG_IBPORT_IDX(SendDmaHeadAddr)
302 #define krp_senddmaidlecnt KREG_IBPORT_IDX(SendDmaIdleCnt)
303 #define krp_senddmalengen KREG_IBPORT_IDX(SendDmaLenGen)
304 #define krp_senddmaprioritythld KREG_IBPORT_IDX(SendDmaPriorityThld)
305 #define krp_senddmareloadcnt KREG_IBPORT_IDX(SendDmaReloadCnt)
306 #define krp_senddmastatus KREG_IBPORT_IDX(SendDmaStatus)
307 #define krp_senddmatail KREG_IBPORT_IDX(SendDmaTail)
308 #define krp_sendhdrsymptom KREG_IBPORT_IDX(SendHdrErrSymptom)
309 #define krp_sendslid KREG_IBPORT_IDX(SendIBSLIDAssign)
310 #define krp_sendslidmask KREG_IBPORT_IDX(SendIBSLIDMask)
311 #define krp_ibsdtestiftx KREG_IBPORT_IDX(IB_SDTEST_IF_TX)
312 #define krp_adapt_dis_timer KREG_IBPORT_IDX(ADAPT_DISABLE_TIMER_THRESHOLD)
313 #define krp_tx_deemph_override KREG_IBPORT_IDX(IBSD_TX_DEEMPHASIS_OVERRIDE)
314 #define krp_serdesctrl KREG_IBPORT_IDX(IBSerdesCtrl)
315
316 /*
317 * Per-context kernel registers. Acess only with qib_read_kreg_ctxt()
318 * or qib_write_kreg_ctxt()
319 */
320 #define krc_rcvhdraddr KREG_IDX(RcvHdrAddr0)
321 #define krc_rcvhdrtailaddr KREG_IDX(RcvHdrTailAddr0)
322
323 /*
324 * TID Flow table, per context. Reduces
325 * number of hdrq updates to one per flow (or on errors).
326 * context 0 and 1 share same memory, but have distinct
327 * addresses. Since for now, we never use expected sends
328 * on kernel contexts, we don't worry about that (we initialize
329 * those entries for ctxt 0/1 on driver load twice, for example).
330 */
331 #define NUM_TIDFLOWS_CTXT 0x20 /* 0x20 per context; have to hardcode */
332 #define ur_rcvflowtable (KREG_IDX(RcvTIDFlowTable0) - KREG_IDX(RcvHdrTail0))
333
334 /* these are the error bits in the tid flows, and are W1C */
335 #define TIDFLOW_ERRBITS ( \
336 (SYM_MASK(RcvTIDFlowTable0, GenMismatch) << \
337 SYM_LSB(RcvTIDFlowTable0, GenMismatch)) | \
338 (SYM_MASK(RcvTIDFlowTable0, SeqMismatch) << \
339 SYM_LSB(RcvTIDFlowTable0, SeqMismatch)))
340
341 /* Most (not all) Counters are per-IBport.
342 * Requires LBIntCnt is at offset 0 in the group
343 */
344 #define CREG_IDX(regname) \
345 ((QIB_7322_##regname##_0_OFFS - QIB_7322_LBIntCnt_OFFS) / sizeof(u64))
346
347 #define crp_badformat CREG_IDX(RxVersionErrCnt)
348 #define crp_err_rlen CREG_IDX(RxLenErrCnt)
349 #define crp_erricrc CREG_IDX(RxICRCErrCnt)
350 #define crp_errlink CREG_IDX(RxLinkMalformCnt)
351 #define crp_errlpcrc CREG_IDX(RxLPCRCErrCnt)
352 #define crp_errpkey CREG_IDX(RxPKeyMismatchCnt)
353 #define crp_errvcrc CREG_IDX(RxVCRCErrCnt)
354 #define crp_excessbufferovfl CREG_IDX(ExcessBufferOvflCnt)
355 #define crp_iblinkdown CREG_IDX(IBLinkDownedCnt)
356 #define crp_iblinkerrrecov CREG_IDX(IBLinkErrRecoveryCnt)
357 #define crp_ibstatuschange CREG_IDX(IBStatusChangeCnt)
358 #define crp_ibsymbolerr CREG_IDX(IBSymbolErrCnt)
359 #define crp_invalidrlen CREG_IDX(RxMaxMinLenErrCnt)
360 #define crp_locallinkintegrityerr CREG_IDX(LocalLinkIntegrityErrCnt)
361 #define crp_pktrcv CREG_IDX(RxDataPktCnt)
362 #define crp_pktrcvflowctrl CREG_IDX(RxFlowPktCnt)
363 #define crp_pktsend CREG_IDX(TxDataPktCnt)
364 #define crp_pktsendflow CREG_IDX(TxFlowPktCnt)
365 #define crp_psrcvdatacount CREG_IDX(PSRcvDataCount)
366 #define crp_psrcvpktscount CREG_IDX(PSRcvPktsCount)
367 #define crp_psxmitdatacount CREG_IDX(PSXmitDataCount)
368 #define crp_psxmitpktscount CREG_IDX(PSXmitPktsCount)
369 #define crp_psxmitwaitcount CREG_IDX(PSXmitWaitCount)
370 #define crp_rcvebp CREG_IDX(RxEBPCnt)
371 #define crp_rcvflowctrlviol CREG_IDX(RxFlowCtrlViolCnt)
372 #define crp_rcvovfl CREG_IDX(RxBufOvflCnt)
373 #define crp_rxdlidfltr CREG_IDX(RxDlidFltrCnt)
374 #define crp_rxdroppkt CREG_IDX(RxDroppedPktCnt)
375 #define crp_rxotherlocalphyerr CREG_IDX(RxOtherLocalPhyErrCnt)
376 #define crp_rxqpinvalidctxt CREG_IDX(RxQPInvalidContextCnt)
377 #define crp_rxvlerr CREG_IDX(RxVlErrCnt)
378 #define crp_sendstall CREG_IDX(TxFlowStallCnt)
379 #define crp_txdroppedpkt CREG_IDX(TxDroppedPktCnt)
380 #define crp_txhdrerr CREG_IDX(TxHeadersErrCnt)
381 #define crp_txlenerr CREG_IDX(TxLenErrCnt)
382 #define crp_txlenerr CREG_IDX(TxLenErrCnt)
383 #define crp_txminmaxlenerr CREG_IDX(TxMaxMinLenErrCnt)
384 #define crp_txsdmadesc CREG_IDX(TxSDmaDescCnt)
385 #define crp_txunderrun CREG_IDX(TxUnderrunCnt)
386 #define crp_txunsupvl CREG_IDX(TxUnsupVLErrCnt)
387 #define crp_vl15droppedpkt CREG_IDX(RxVL15DroppedPktCnt)
388 #define crp_wordrcv CREG_IDX(RxDwordCnt)
389 #define crp_wordsend CREG_IDX(TxDwordCnt)
390 #define crp_tx_creditstalls CREG_IDX(TxCreditUpToDateTimeOut)
391
392 /* these are the (few) counters that are not port-specific */
393 #define CREG_DEVIDX(regname) ((QIB_7322_##regname##_OFFS - \
394 QIB_7322_LBIntCnt_OFFS) / sizeof(u64))
395 #define cr_base_egrovfl CREG_DEVIDX(RxP0HdrEgrOvflCnt)
396 #define cr_lbint CREG_DEVIDX(LBIntCnt)
397 #define cr_lbstall CREG_DEVIDX(LBFlowStallCnt)
398 #define cr_pcieretrydiag CREG_DEVIDX(PcieRetryBufDiagQwordCnt)
399 #define cr_rxtidflowdrop CREG_DEVIDX(RxTidFlowDropCnt)
400 #define cr_tidfull CREG_DEVIDX(RxTIDFullErrCnt)
401 #define cr_tidinvalid CREG_DEVIDX(RxTIDValidErrCnt)
402
403 /* no chip register for # of IB ports supported, so define */
404 #define NUM_IB_PORTS 2
405
406 /* 1 VL15 buffer per hardware IB port, no register for this, so define */
407 #define NUM_VL15_BUFS NUM_IB_PORTS
408
409 /*
410 * context 0 and 1 are special, and there is no chip register that
411 * defines this value, so we have to define it here.
412 * These are all allocated to either 0 or 1 for single port
413 * hardware configuration, otherwise each gets half
414 */
415 #define KCTXT0_EGRCNT 2048
416
417 /* values for vl and port fields in PBC, 7322-specific */
418 #define PBC_PORT_SEL_LSB 26
419 #define PBC_PORT_SEL_RMASK 1
420 #define PBC_VL_NUM_LSB 27
421 #define PBC_VL_NUM_RMASK 7
422 #define PBC_7322_VL15_SEND (1ULL << 63) /* pbc; VL15, no credit check */
423 #define PBC_7322_VL15_SEND_CTRL (1ULL << 31) /* control version of same */
424
425 static u8 ib_rate_to_delay[IB_RATE_120_GBPS + 1] = {
426 [IB_RATE_2_5_GBPS] = 16,
427 [IB_RATE_5_GBPS] = 8,
428 [IB_RATE_10_GBPS] = 4,
429 [IB_RATE_20_GBPS] = 2,
430 [IB_RATE_30_GBPS] = 2,
431 [IB_RATE_40_GBPS] = 1
432 };
433
434 #define IBA7322_LINKSPEED_SHIFT SYM_LSB(IBCStatusA_0, LinkSpeedActive)
435 #define IBA7322_LINKWIDTH_SHIFT SYM_LSB(IBCStatusA_0, LinkWidthActive)
436
437 /* link training states, from IBC */
438 #define IB_7322_LT_STATE_DISABLED 0x00
439 #define IB_7322_LT_STATE_LINKUP 0x01
440 #define IB_7322_LT_STATE_POLLACTIVE 0x02
441 #define IB_7322_LT_STATE_POLLQUIET 0x03
442 #define IB_7322_LT_STATE_SLEEPDELAY 0x04
443 #define IB_7322_LT_STATE_SLEEPQUIET 0x05
444 #define IB_7322_LT_STATE_CFGDEBOUNCE 0x08
445 #define IB_7322_LT_STATE_CFGRCVFCFG 0x09
446 #define IB_7322_LT_STATE_CFGWAITRMT 0x0a
447 #define IB_7322_LT_STATE_CFGIDLE 0x0b
448 #define IB_7322_LT_STATE_RECOVERRETRAIN 0x0c
449 #define IB_7322_LT_STATE_TXREVLANES 0x0d
450 #define IB_7322_LT_STATE_RECOVERWAITRMT 0x0e
451 #define IB_7322_LT_STATE_RECOVERIDLE 0x0f
452 #define IB_7322_LT_STATE_CFGENH 0x10
453 #define IB_7322_LT_STATE_CFGTEST 0x11
454
455 /* link state machine states from IBC */
456 #define IB_7322_L_STATE_DOWN 0x0
457 #define IB_7322_L_STATE_INIT 0x1
458 #define IB_7322_L_STATE_ARM 0x2
459 #define IB_7322_L_STATE_ACTIVE 0x3
460 #define IB_7322_L_STATE_ACT_DEFER 0x4
461
462 static const u8 qib_7322_physportstate[0x20] = {
463 [IB_7322_LT_STATE_DISABLED] = IB_PHYSPORTSTATE_DISABLED,
464 [IB_7322_LT_STATE_LINKUP] = IB_PHYSPORTSTATE_LINKUP,
465 [IB_7322_LT_STATE_POLLACTIVE] = IB_PHYSPORTSTATE_POLL,
466 [IB_7322_LT_STATE_POLLQUIET] = IB_PHYSPORTSTATE_POLL,
467 [IB_7322_LT_STATE_SLEEPDELAY] = IB_PHYSPORTSTATE_SLEEP,
468 [IB_7322_LT_STATE_SLEEPQUIET] = IB_PHYSPORTSTATE_SLEEP,
469 [IB_7322_LT_STATE_CFGDEBOUNCE] = IB_PHYSPORTSTATE_CFG_TRAIN,
470 [IB_7322_LT_STATE_CFGRCVFCFG] =
471 IB_PHYSPORTSTATE_CFG_TRAIN,
472 [IB_7322_LT_STATE_CFGWAITRMT] =
473 IB_PHYSPORTSTATE_CFG_TRAIN,
474 [IB_7322_LT_STATE_CFGIDLE] = IB_PHYSPORTSTATE_CFG_IDLE,
475 [IB_7322_LT_STATE_RECOVERRETRAIN] =
476 IB_PHYSPORTSTATE_LINK_ERR_RECOVER,
477 [IB_7322_LT_STATE_RECOVERWAITRMT] =
478 IB_PHYSPORTSTATE_LINK_ERR_RECOVER,
479 [IB_7322_LT_STATE_RECOVERIDLE] =
480 IB_PHYSPORTSTATE_LINK_ERR_RECOVER,
481 [IB_7322_LT_STATE_CFGENH] = IB_PHYSPORTSTATE_CFG_ENH,
482 [IB_7322_LT_STATE_CFGTEST] = IB_PHYSPORTSTATE_CFG_TRAIN,
483 [0x12] = IB_PHYSPORTSTATE_CFG_TRAIN,
484 [0x13] = IB_PHYSPORTSTATE_CFG_WAIT_ENH,
485 [0x14] = IB_PHYSPORTSTATE_CFG_TRAIN,
486 [0x15] = IB_PHYSPORTSTATE_CFG_TRAIN,
487 [0x16] = IB_PHYSPORTSTATE_CFG_TRAIN,
488 [0x17] = IB_PHYSPORTSTATE_CFG_TRAIN
489 };
490
491 struct qib_chip_specific {
492 u64 __iomem *cregbase;
493 u64 *cntrs;
494 spinlock_t rcvmod_lock; /* protect rcvctrl shadow changes */
495 spinlock_t gpio_lock; /* RMW of shadows/regs for ExtCtrl and GPIO */
496 u64 main_int_mask; /* clear bits which have dedicated handlers */
497 u64 int_enable_mask; /* for per port interrupts in single port mode */
498 u64 errormask;
499 u64 hwerrmask;
500 u64 gpio_out; /* shadow of kr_gpio_out, for rmw ops */
501 u64 gpio_mask; /* shadow the gpio mask register */
502 u64 extctrl; /* shadow the gpio output enable, etc... */
503 u32 ncntrs;
504 u32 nportcntrs;
505 u32 cntrnamelen;
506 u32 portcntrnamelen;
507 u32 numctxts;
508 u32 rcvegrcnt;
509 u32 updthresh; /* current AvailUpdThld */
510 u32 updthresh_dflt; /* default AvailUpdThld */
511 u32 r1;
512 int irq;
513 u32 num_msix_entries;
514 u32 sdmabufcnt;
515 u32 lastbuf_for_pio;
516 u32 stay_in_freeze;
517 u32 recovery_ports_initted;
518 struct msix_entry *msix_entries;
519 void **msix_arg;
520 unsigned long *sendchkenable;
521 unsigned long *sendgrhchk;
522 unsigned long *sendibchk;
523 u32 rcvavail_timeout[18];
524 char emsgbuf[128]; /* for device error interrupt msg buffer */
525 };
526
527 /* Table of entries in "human readable" form Tx Emphasis. */
528 struct txdds_ent {
529 u8 amp;
530 u8 pre;
531 u8 main;
532 u8 post;
533 };
534
535 struct vendor_txdds_ent {
536 u8 oui[QSFP_VOUI_LEN];
537 u8 *partnum;
538 struct txdds_ent sdr;
539 struct txdds_ent ddr;
540 struct txdds_ent qdr;
541 };
542
543 static void write_tx_serdes_param(struct qib_pportdata *, struct txdds_ent *);
544
545 #define TXDDS_TABLE_SZ 16 /* number of entries per speed in onchip table */
546 #define TXDDS_EXTRA_SZ 13 /* number of extra tx settings entries */
547 #define SERDES_CHANS 4 /* yes, it's obvious, but one less magic number */
548
549 #define H1_FORCE_VAL 8
550 #define H1_FORCE_QME 1 /* may be overridden via setup_txselect() */
551 #define H1_FORCE_QMH 7 /* may be overridden via setup_txselect() */
552
553 /* The static and dynamic registers are paired, and the pairs indexed by spd */
554 #define krp_static_adapt_dis(spd) (KREG_IBPORT_IDX(ADAPT_DISABLE_STATIC_SDR) \
555 + ((spd) * 2))
556
557 #define QDR_DFE_DISABLE_DELAY 4000 /* msec after LINKUP */
558 #define QDR_STATIC_ADAPT_DOWN 0xf0f0f0f0ULL /* link down, H1-H4 QDR adapts */
559 #define QDR_STATIC_ADAPT_DOWN_R1 0ULL /* r1 link down, H1-H4 QDR adapts */
560 #define QDR_STATIC_ADAPT_INIT 0xffffffffffULL /* up, disable H0,H1-8, LE */
561 #define QDR_STATIC_ADAPT_INIT_R1 0xf0ffffffffULL /* r1 up, disable H0,H1-8 */
562
563 struct qib_chippport_specific {
564 u64 __iomem *kpregbase;
565 u64 __iomem *cpregbase;
566 u64 *portcntrs;
567 struct qib_pportdata *ppd;
568 wait_queue_head_t autoneg_wait;
569 struct delayed_work autoneg_work;
570 struct delayed_work ipg_work;
571 struct timer_list chase_timer;
572 /*
573 * these 5 fields are used to establish deltas for IB symbol
574 * errors and linkrecovery errors. They can be reported on
575 * some chips during link negotiation prior to INIT, and with
576 * DDR when faking DDR negotiations with non-IBTA switches.
577 * The chip counters are adjusted at driver unload if there is
578 * a non-zero delta.
579 */
580 u64 ibdeltainprog;
581 u64 ibsymdelta;
582 u64 ibsymsnap;
583 u64 iblnkerrdelta;
584 u64 iblnkerrsnap;
585 u64 iblnkdownsnap;
586 u64 iblnkdowndelta;
587 u64 ibmalfdelta;
588 u64 ibmalfsnap;
589 u64 ibcctrl_a; /* krp_ibcctrl_a shadow */
590 u64 ibcctrl_b; /* krp_ibcctrl_b shadow */
591 u64 qdr_dfe_time;
592 u64 chase_end;
593 u32 autoneg_tries;
594 u32 recovery_init;
595 u32 qdr_dfe_on;
596 u32 qdr_reforce;
597 /*
598 * Per-bay per-channel rcv QMH H1 values and Tx values for QDR.
599 * entry zero is unused, to simplify indexing
600 */
601 u8 h1_val;
602 u8 no_eep; /* txselect table index to use if no qsfp info */
603 u8 ipg_tries;
604 u8 ibmalfusesnap;
605 struct qib_qsfp_data qsfp_data;
606 char epmsgbuf[192]; /* for port error interrupt msg buffer */
607 };
608
609 static struct {
610 const char *name;
611 irq_handler_t handler;
612 int lsb;
613 int port; /* 0 if not port-specific, else port # */
614 } irq_table[] = {
615 { QIB_DRV_NAME, qib_7322intr, -1, 0 },
616 { QIB_DRV_NAME " (buf avail)", qib_7322bufavail,
617 SYM_LSB(IntStatus, SendBufAvail), 0 },
618 { QIB_DRV_NAME " (sdma 0)", sdma_intr,
619 SYM_LSB(IntStatus, SDmaInt_0), 1 },
620 { QIB_DRV_NAME " (sdma 1)", sdma_intr,
621 SYM_LSB(IntStatus, SDmaInt_1), 2 },
622 { QIB_DRV_NAME " (sdmaI 0)", sdma_idle_intr,
623 SYM_LSB(IntStatus, SDmaIdleInt_0), 1 },
624 { QIB_DRV_NAME " (sdmaI 1)", sdma_idle_intr,
625 SYM_LSB(IntStatus, SDmaIdleInt_1), 2 },
626 { QIB_DRV_NAME " (sdmaP 0)", sdma_progress_intr,
627 SYM_LSB(IntStatus, SDmaProgressInt_0), 1 },
628 { QIB_DRV_NAME " (sdmaP 1)", sdma_progress_intr,
629 SYM_LSB(IntStatus, SDmaProgressInt_1), 2 },
630 { QIB_DRV_NAME " (sdmaC 0)", sdma_cleanup_intr,
631 SYM_LSB(IntStatus, SDmaCleanupDone_0), 1 },
632 { QIB_DRV_NAME " (sdmaC 1)", sdma_cleanup_intr,
633 SYM_LSB(IntStatus, SDmaCleanupDone_1), 2 },
634 };
635
636 /* ibcctrl bits */
637 #define QLOGIC_IB_IBCC_LINKINITCMD_DISABLE 1
638 /* cycle through TS1/TS2 till OK */
639 #define QLOGIC_IB_IBCC_LINKINITCMD_POLL 2
640 /* wait for TS1, then go on */
641 #define QLOGIC_IB_IBCC_LINKINITCMD_SLEEP 3
642 #define QLOGIC_IB_IBCC_LINKINITCMD_SHIFT 16
643
644 #define QLOGIC_IB_IBCC_LINKCMD_DOWN 1 /* move to 0x11 */
645 #define QLOGIC_IB_IBCC_LINKCMD_ARMED 2 /* move to 0x21 */
646 #define QLOGIC_IB_IBCC_LINKCMD_ACTIVE 3 /* move to 0x31 */
647
648 #define BLOB_7322_IBCHG 0x101
649
650 static inline void qib_write_kreg(const struct qib_devdata *dd,
651 const u32 regno, u64 value);
652 static inline u32 qib_read_kreg32(const struct qib_devdata *, const u32);
653 static void write_7322_initregs(struct qib_devdata *);
654 static void write_7322_init_portregs(struct qib_pportdata *);
655 static void setup_7322_link_recovery(struct qib_pportdata *, u32);
656 static void check_7322_rxe_status(struct qib_pportdata *);
657 static u32 __iomem *qib_7322_getsendbuf(struct qib_pportdata *, u64, u32 *);
658
659 /**
660 * qib_read_ureg32 - read 32-bit virtualized per-context register
661 * @dd: device
662 * @regno: register number
663 * @ctxt: context number
664 *
665 * Return the contents of a register that is virtualized to be per context.
666 * Returns -1 on errors (not distinguishable from valid contents at
667 * runtime; we may add a separate error variable at some point).
668 */
669 static inline u32 qib_read_ureg32(const struct qib_devdata *dd,
670 enum qib_ureg regno, int ctxt)
671 {
672 if (!dd->kregbase || !(dd->flags & QIB_PRESENT))
673 return 0;
674 return readl(regno + (u64 __iomem *)(
675 (dd->ureg_align * ctxt) + (dd->userbase ?
676 (char __iomem *)dd->userbase :
677 (char __iomem *)dd->kregbase + dd->uregbase)));
678 }
679
680 /**
681 * qib_read_ureg - read virtualized per-context register
682 * @dd: device
683 * @regno: register number
684 * @ctxt: context number
685 *
686 * Return the contents of a register that is virtualized to be per context.
687 * Returns -1 on errors (not distinguishable from valid contents at
688 * runtime; we may add a separate error variable at some point).
689 */
690 static inline u64 qib_read_ureg(const struct qib_devdata *dd,
691 enum qib_ureg regno, int ctxt)
692 {
693
694 if (!dd->kregbase || !(dd->flags & QIB_PRESENT))
695 return 0;
696 return readq(regno + (u64 __iomem *)(
697 (dd->ureg_align * ctxt) + (dd->userbase ?
698 (char __iomem *)dd->userbase :
699 (char __iomem *)dd->kregbase + dd->uregbase)));
700 }
701
702 /**
703 * qib_write_ureg - write virtualized per-context register
704 * @dd: device
705 * @regno: register number
706 * @value: value
707 * @ctxt: context
708 *
709 * Write the contents of a register that is virtualized to be per context.
710 */
711 static inline void qib_write_ureg(const struct qib_devdata *dd,
712 enum qib_ureg regno, u64 value, int ctxt)
713 {
714 u64 __iomem *ubase;
715 if (dd->userbase)
716 ubase = (u64 __iomem *)
717 ((char __iomem *) dd->userbase +
718 dd->ureg_align * ctxt);
719 else
720 ubase = (u64 __iomem *)
721 (dd->uregbase +
722 (char __iomem *) dd->kregbase +
723 dd->ureg_align * ctxt);
724
725 if (dd->kregbase && (dd->flags & QIB_PRESENT))
726 writeq(value, &ubase[regno]);
727 }
728
729 static inline u32 qib_read_kreg32(const struct qib_devdata *dd,
730 const u32 regno)
731 {
732 if (!dd->kregbase || !(dd->flags & QIB_PRESENT))
733 return -1;
734 return readl((u32 __iomem *) &dd->kregbase[regno]);
735 }
736
737 static inline u64 qib_read_kreg64(const struct qib_devdata *dd,
738 const u32 regno)
739 {
740 if (!dd->kregbase || !(dd->flags & QIB_PRESENT))
741 return -1;
742 return readq(&dd->kregbase[regno]);
743 }
744
745 static inline void qib_write_kreg(const struct qib_devdata *dd,
746 const u32 regno, u64 value)
747 {
748 if (dd->kregbase && (dd->flags & QIB_PRESENT))
749 writeq(value, &dd->kregbase[regno]);
750 }
751
752 /*
753 * not many sanity checks for the port-specific kernel register routines,
754 * since they are only used when it's known to be safe.
755 */
756 static inline u64 qib_read_kreg_port(const struct qib_pportdata *ppd,
757 const u16 regno)
758 {
759 if (!ppd->cpspec->kpregbase || !(ppd->dd->flags & QIB_PRESENT))
760 return 0ULL;
761 return readq(&ppd->cpspec->kpregbase[regno]);
762 }
763
764 static inline void qib_write_kreg_port(const struct qib_pportdata *ppd,
765 const u16 regno, u64 value)
766 {
767 if (ppd->cpspec && ppd->dd && ppd->cpspec->kpregbase &&
768 (ppd->dd->flags & QIB_PRESENT))
769 writeq(value, &ppd->cpspec->kpregbase[regno]);
770 }
771
772 /**
773 * qib_write_kreg_ctxt - write a device's per-ctxt 64-bit kernel register
774 * @dd: the qlogic_ib device
775 * @regno: the register number to write
776 * @ctxt: the context containing the register
777 * @value: the value to write
778 */
779 static inline void qib_write_kreg_ctxt(const struct qib_devdata *dd,
780 const u16 regno, unsigned ctxt,
781 u64 value)
782 {
783 qib_write_kreg(dd, regno + ctxt, value);
784 }
785
786 static inline u64 read_7322_creg(const struct qib_devdata *dd, u16 regno)
787 {
788 if (!dd->cspec->cregbase || !(dd->flags & QIB_PRESENT))
789 return 0;
790 return readq(&dd->cspec->cregbase[regno]);
791
792
793 }
794
795 static inline u32 read_7322_creg32(const struct qib_devdata *dd, u16 regno)
796 {
797 if (!dd->cspec->cregbase || !(dd->flags & QIB_PRESENT))
798 return 0;
799 return readl(&dd->cspec->cregbase[regno]);
800
801
802 }
803
804 static inline void write_7322_creg_port(const struct qib_pportdata *ppd,
805 u16 regno, u64 value)
806 {
807 if (ppd->cpspec && ppd->cpspec->cpregbase &&
808 (ppd->dd->flags & QIB_PRESENT))
809 writeq(value, &ppd->cpspec->cpregbase[regno]);
810 }
811
812 static inline u64 read_7322_creg_port(const struct qib_pportdata *ppd,
813 u16 regno)
814 {
815 if (!ppd->cpspec || !ppd->cpspec->cpregbase ||
816 !(ppd->dd->flags & QIB_PRESENT))
817 return 0;
818 return readq(&ppd->cpspec->cpregbase[regno]);
819 }
820
821 static inline u32 read_7322_creg32_port(const struct qib_pportdata *ppd,
822 u16 regno)
823 {
824 if (!ppd->cpspec || !ppd->cpspec->cpregbase ||
825 !(ppd->dd->flags & QIB_PRESENT))
826 return 0;
827 return readl(&ppd->cpspec->cpregbase[regno]);
828 }
829
830 /* bits in Control register */
831 #define QLOGIC_IB_C_RESET SYM_MASK(Control, SyncReset)
832 #define QLOGIC_IB_C_SDMAFETCHPRIOEN SYM_MASK(Control, SDmaDescFetchPriorityEn)
833
834 /* bits in general interrupt regs */
835 #define QIB_I_RCVURG_LSB SYM_LSB(IntMask, RcvUrg0IntMask)
836 #define QIB_I_RCVURG_RMASK MASK_ACROSS(0, 17)
837 #define QIB_I_RCVURG_MASK (QIB_I_RCVURG_RMASK << QIB_I_RCVURG_LSB)
838 #define QIB_I_RCVAVAIL_LSB SYM_LSB(IntMask, RcvAvail0IntMask)
839 #define QIB_I_RCVAVAIL_RMASK MASK_ACROSS(0, 17)
840 #define QIB_I_RCVAVAIL_MASK (QIB_I_RCVAVAIL_RMASK << QIB_I_RCVAVAIL_LSB)
841 #define QIB_I_C_ERROR INT_MASK(Err)
842
843 #define QIB_I_SPIOSENT (INT_MASK_P(SendDone, 0) | INT_MASK_P(SendDone, 1))
844 #define QIB_I_SPIOBUFAVAIL INT_MASK(SendBufAvail)
845 #define QIB_I_GPIO INT_MASK(AssertGPIO)
846 #define QIB_I_P_SDMAINT(pidx) \
847 (INT_MASK_P(SDma, pidx) | INT_MASK_P(SDmaIdle, pidx) | \
848 INT_MASK_P(SDmaProgress, pidx) | \
849 INT_MASK_PM(SDmaCleanupDone, pidx))
850
851 /* Interrupt bits that are "per port" */
852 #define QIB_I_P_BITSEXTANT(pidx) \
853 (INT_MASK_P(Err, pidx) | INT_MASK_P(SendDone, pidx) | \
854 INT_MASK_P(SDma, pidx) | INT_MASK_P(SDmaIdle, pidx) | \
855 INT_MASK_P(SDmaProgress, pidx) | \
856 INT_MASK_PM(SDmaCleanupDone, pidx))
857
858 /* Interrupt bits that are common to a device */
859 /* currently unused: QIB_I_SPIOSENT */
860 #define QIB_I_C_BITSEXTANT \
861 (QIB_I_RCVURG_MASK | QIB_I_RCVAVAIL_MASK | \
862 QIB_I_SPIOSENT | \
863 QIB_I_C_ERROR | QIB_I_SPIOBUFAVAIL | QIB_I_GPIO)
864
865 #define QIB_I_BITSEXTANT (QIB_I_C_BITSEXTANT | \
866 QIB_I_P_BITSEXTANT(0) | QIB_I_P_BITSEXTANT(1))
867
868 /*
869 * Error bits that are "per port".
870 */
871 #define QIB_E_P_IBSTATUSCHANGED ERR_MASK_N(IBStatusChanged)
872 #define QIB_E_P_SHDR ERR_MASK_N(SHeadersErr)
873 #define QIB_E_P_VL15_BUF_MISUSE ERR_MASK_N(VL15BufMisuseErr)
874 #define QIB_E_P_SND_BUF_MISUSE ERR_MASK_N(SendBufMisuseErr)
875 #define QIB_E_P_SUNSUPVL ERR_MASK_N(SendUnsupportedVLErr)
876 #define QIB_E_P_SUNEXP_PKTNUM ERR_MASK_N(SendUnexpectedPktNumErr)
877 #define QIB_E_P_SDROP_DATA ERR_MASK_N(SendDroppedDataPktErr)
878 #define QIB_E_P_SDROP_SMP ERR_MASK_N(SendDroppedSmpPktErr)
879 #define QIB_E_P_SPKTLEN ERR_MASK_N(SendPktLenErr)
880 #define QIB_E_P_SUNDERRUN ERR_MASK_N(SendUnderRunErr)
881 #define QIB_E_P_SMAXPKTLEN ERR_MASK_N(SendMaxPktLenErr)
882 #define QIB_E_P_SMINPKTLEN ERR_MASK_N(SendMinPktLenErr)
883 #define QIB_E_P_RIBLOSTLINK ERR_MASK_N(RcvIBLostLinkErr)
884 #define QIB_E_P_RHDR ERR_MASK_N(RcvHdrErr)
885 #define QIB_E_P_RHDRLEN ERR_MASK_N(RcvHdrLenErr)
886 #define QIB_E_P_RBADTID ERR_MASK_N(RcvBadTidErr)
887 #define QIB_E_P_RBADVERSION ERR_MASK_N(RcvBadVersionErr)
888 #define QIB_E_P_RIBFLOW ERR_MASK_N(RcvIBFlowErr)
889 #define QIB_E_P_REBP ERR_MASK_N(RcvEBPErr)
890 #define QIB_E_P_RUNSUPVL ERR_MASK_N(RcvUnsupportedVLErr)
891 #define QIB_E_P_RUNEXPCHAR ERR_MASK_N(RcvUnexpectedCharErr)
892 #define QIB_E_P_RSHORTPKTLEN ERR_MASK_N(RcvShortPktLenErr)
893 #define QIB_E_P_RLONGPKTLEN ERR_MASK_N(RcvLongPktLenErr)
894 #define QIB_E_P_RMAXPKTLEN ERR_MASK_N(RcvMaxPktLenErr)
895 #define QIB_E_P_RMINPKTLEN ERR_MASK_N(RcvMinPktLenErr)
896 #define QIB_E_P_RICRC ERR_MASK_N(RcvICRCErr)
897 #define QIB_E_P_RVCRC ERR_MASK_N(RcvVCRCErr)
898 #define QIB_E_P_RFORMATERR ERR_MASK_N(RcvFormatErr)
899
900 #define QIB_E_P_SDMA1STDESC ERR_MASK_N(SDma1stDescErr)
901 #define QIB_E_P_SDMABASE ERR_MASK_N(SDmaBaseErr)
902 #define QIB_E_P_SDMADESCADDRMISALIGN ERR_MASK_N(SDmaDescAddrMisalignErr)
903 #define QIB_E_P_SDMADWEN ERR_MASK_N(SDmaDwEnErr)
904 #define QIB_E_P_SDMAGENMISMATCH ERR_MASK_N(SDmaGenMismatchErr)
905 #define QIB_E_P_SDMAHALT ERR_MASK_N(SDmaHaltErr)
906 #define QIB_E_P_SDMAMISSINGDW ERR_MASK_N(SDmaMissingDwErr)
907 #define QIB_E_P_SDMAOUTOFBOUND ERR_MASK_N(SDmaOutOfBoundErr)
908 #define QIB_E_P_SDMARPYTAG ERR_MASK_N(SDmaRpyTagErr)
909 #define QIB_E_P_SDMATAILOUTOFBOUND ERR_MASK_N(SDmaTailOutOfBoundErr)
910 #define QIB_E_P_SDMAUNEXPDATA ERR_MASK_N(SDmaUnexpDataErr)
911
912 /* Error bits that are common to a device */
913 #define QIB_E_RESET ERR_MASK(ResetNegated)
914 #define QIB_E_HARDWARE ERR_MASK(HardwareErr)
915 #define QIB_E_INVALIDADDR ERR_MASK(InvalidAddrErr)
916
917
918 /*
919 * Per chip (rather than per-port) errors. Most either do
920 * nothing but trigger a print (because they self-recover, or
921 * always occur in tandem with other errors that handle the
922 * issue), or because they indicate errors with no recovery,
923 * but we want to know that they happened.
924 */
925 #define QIB_E_SBUF_VL15_MISUSE ERR_MASK(SBufVL15MisUseErr)
926 #define QIB_E_BADEEP ERR_MASK(InvalidEEPCmd)
927 #define QIB_E_VLMISMATCH ERR_MASK(SendVLMismatchErr)
928 #define QIB_E_ARMLAUNCH ERR_MASK(SendArmLaunchErr)
929 #define QIB_E_SPCLTRIG ERR_MASK(SendSpecialTriggerErr)
930 #define QIB_E_RRCVHDRFULL ERR_MASK(RcvHdrFullErr)
931 #define QIB_E_RRCVEGRFULL ERR_MASK(RcvEgrFullErr)
932 #define QIB_E_RCVCTXTSHARE ERR_MASK(RcvContextShareErr)
933
934 /* SDMA chip errors (not per port)
935 * QIB_E_SDMA_BUF_DUP needs no special handling, because we will also get
936 * the SDMAHALT error immediately, so we just print the dup error via the
937 * E_AUTO mechanism. This is true of most of the per-port fatal errors
938 * as well, but since this is port-independent, by definition, it's
939 * handled a bit differently. SDMA_VL15 and SDMA_WRONG_PORT are per
940 * packet send errors, and so are handled in the same manner as other
941 * per-packet errors.
942 */
943 #define QIB_E_SDMA_VL15 ERR_MASK(SDmaVL15Err)
944 #define QIB_E_SDMA_WRONG_PORT ERR_MASK(SDmaWrongPortErr)
945 #define QIB_E_SDMA_BUF_DUP ERR_MASK(SDmaBufMaskDuplicateErr)
946
947 /*
948 * Below functionally equivalent to legacy QLOGIC_IB_E_PKTERRS
949 * it is used to print "common" packet errors.
950 */
951 #define QIB_E_P_PKTERRS (QIB_E_P_SPKTLEN |\
952 QIB_E_P_SDROP_DATA | QIB_E_P_RVCRC |\
953 QIB_E_P_RICRC | QIB_E_P_RSHORTPKTLEN |\
954 QIB_E_P_VL15_BUF_MISUSE | QIB_E_P_SHDR | \
955 QIB_E_P_REBP)
956
957 /* Error Bits that Packet-related (Receive, per-port) */
958 #define QIB_E_P_RPKTERRS (\
959 QIB_E_P_RHDRLEN | QIB_E_P_RBADTID | \
960 QIB_E_P_RBADVERSION | QIB_E_P_RHDR | \
961 QIB_E_P_RLONGPKTLEN | QIB_E_P_RSHORTPKTLEN |\
962 QIB_E_P_RMAXPKTLEN | QIB_E_P_RMINPKTLEN | \
963 QIB_E_P_RFORMATERR | QIB_E_P_RUNSUPVL | \
964 QIB_E_P_RUNEXPCHAR | QIB_E_P_RIBFLOW | QIB_E_P_REBP)
965
966 /*
967 * Error bits that are Send-related (per port)
968 * (ARMLAUNCH excluded from E_SPKTERRS because it gets special handling).
969 * All of these potentially need to have a buffer disarmed
970 */
971 #define QIB_E_P_SPKTERRS (\
972 QIB_E_P_SUNEXP_PKTNUM |\
973 QIB_E_P_SDROP_DATA | QIB_E_P_SDROP_SMP |\
974 QIB_E_P_SMAXPKTLEN |\
975 QIB_E_P_VL15_BUF_MISUSE | QIB_E_P_SHDR | \
976 QIB_E_P_SMINPKTLEN | QIB_E_P_SPKTLEN | \
977 QIB_E_P_SND_BUF_MISUSE | QIB_E_P_SUNSUPVL)
978
979 #define QIB_E_SPKTERRS ( \
980 QIB_E_SBUF_VL15_MISUSE | QIB_E_VLMISMATCH | \
981 ERR_MASK_N(SendUnsupportedVLErr) | \
982 QIB_E_SPCLTRIG | QIB_E_SDMA_VL15 | QIB_E_SDMA_WRONG_PORT)
983
984 #define QIB_E_P_SDMAERRS ( \
985 QIB_E_P_SDMAHALT | \
986 QIB_E_P_SDMADESCADDRMISALIGN | \
987 QIB_E_P_SDMAUNEXPDATA | \
988 QIB_E_P_SDMAMISSINGDW | \
989 QIB_E_P_SDMADWEN | \
990 QIB_E_P_SDMARPYTAG | \
991 QIB_E_P_SDMA1STDESC | \
992 QIB_E_P_SDMABASE | \
993 QIB_E_P_SDMATAILOUTOFBOUND | \
994 QIB_E_P_SDMAOUTOFBOUND | \
995 QIB_E_P_SDMAGENMISMATCH)
996
997 /*
998 * This sets some bits more than once, but makes it more obvious which
999 * bits are not handled under other categories, and the repeat definition
1000 * is not a problem.
1001 */
1002 #define QIB_E_P_BITSEXTANT ( \
1003 QIB_E_P_SPKTERRS | QIB_E_P_PKTERRS | QIB_E_P_RPKTERRS | \
1004 QIB_E_P_RIBLOSTLINK | QIB_E_P_IBSTATUSCHANGED | \
1005 QIB_E_P_SND_BUF_MISUSE | QIB_E_P_SUNDERRUN | \
1006 QIB_E_P_SHDR | QIB_E_P_VL15_BUF_MISUSE | QIB_E_P_SDMAERRS \
1007 )
1008
1009 /*
1010 * These are errors that can occur when the link
1011 * changes state while a packet is being sent or received. This doesn't
1012 * cover things like EBP or VCRC that can be the result of a sending
1013 * having the link change state, so we receive a "known bad" packet.
1014 * All of these are "per port", so renamed:
1015 */
1016 #define QIB_E_P_LINK_PKTERRS (\
1017 QIB_E_P_SDROP_DATA | QIB_E_P_SDROP_SMP |\
1018 QIB_E_P_SMINPKTLEN | QIB_E_P_SPKTLEN |\
1019 QIB_E_P_RSHORTPKTLEN | QIB_E_P_RMINPKTLEN |\
1020 QIB_E_P_RUNEXPCHAR)
1021
1022 /*
1023 * This sets some bits more than once, but makes it more obvious which
1024 * bits are not handled under other categories (such as QIB_E_SPKTERRS),
1025 * and the repeat definition is not a problem.
1026 */
1027 #define QIB_E_C_BITSEXTANT (\
1028 QIB_E_HARDWARE | QIB_E_INVALIDADDR | QIB_E_BADEEP |\
1029 QIB_E_ARMLAUNCH | QIB_E_VLMISMATCH | QIB_E_RRCVHDRFULL |\
1030 QIB_E_RRCVEGRFULL | QIB_E_RESET | QIB_E_SBUF_VL15_MISUSE)
1031
1032 /* Likewise Neuter E_SPKT_ERRS_IGNORE */
1033 #define E_SPKT_ERRS_IGNORE 0
1034
1035 #define QIB_EXTS_MEMBIST_DISABLED \
1036 SYM_MASK(EXTStatus, MemBISTDisabled)
1037 #define QIB_EXTS_MEMBIST_ENDTEST \
1038 SYM_MASK(EXTStatus, MemBISTEndTest)
1039
1040 #define QIB_E_SPIOARMLAUNCH \
1041 ERR_MASK(SendArmLaunchErr)
1042
1043 #define IBA7322_IBCC_LINKINITCMD_MASK SYM_RMASK(IBCCtrlA_0, LinkInitCmd)
1044 #define IBA7322_IBCC_LINKCMD_SHIFT SYM_LSB(IBCCtrlA_0, LinkCmd)
1045
1046 /*
1047 * IBTA_1_2 is set when multiple speeds are enabled (normal),
1048 * and also if forced QDR (only QDR enabled). It's enabled for the
1049 * forced QDR case so that scrambling will be enabled by the TS3
1050 * exchange, when supported by both sides of the link.
1051 */
1052 #define IBA7322_IBC_IBTA_1_2_MASK SYM_MASK(IBCCtrlB_0, IB_ENHANCED_MODE)
1053 #define IBA7322_IBC_MAX_SPEED_MASK SYM_MASK(IBCCtrlB_0, SD_SPEED)
1054 #define IBA7322_IBC_SPEED_QDR SYM_MASK(IBCCtrlB_0, SD_SPEED_QDR)
1055 #define IBA7322_IBC_SPEED_DDR SYM_MASK(IBCCtrlB_0, SD_SPEED_DDR)
1056 #define IBA7322_IBC_SPEED_SDR SYM_MASK(IBCCtrlB_0, SD_SPEED_SDR)
1057 #define IBA7322_IBC_SPEED_MASK (SYM_MASK(IBCCtrlB_0, SD_SPEED_SDR) | \
1058 SYM_MASK(IBCCtrlB_0, SD_SPEED_DDR) | SYM_MASK(IBCCtrlB_0, SD_SPEED_QDR))
1059 #define IBA7322_IBC_SPEED_LSB SYM_LSB(IBCCtrlB_0, SD_SPEED_SDR)
1060
1061 #define IBA7322_LEDBLINK_OFF_SHIFT SYM_LSB(RcvPktLEDCnt_0, OFFperiod)
1062 #define IBA7322_LEDBLINK_ON_SHIFT SYM_LSB(RcvPktLEDCnt_0, ONperiod)
1063
1064 #define IBA7322_IBC_WIDTH_AUTONEG SYM_MASK(IBCCtrlB_0, IB_NUM_CHANNELS)
1065 #define IBA7322_IBC_WIDTH_4X_ONLY (1<<SYM_LSB(IBCCtrlB_0, IB_NUM_CHANNELS))
1066 #define IBA7322_IBC_WIDTH_1X_ONLY (0<<SYM_LSB(IBCCtrlB_0, IB_NUM_CHANNELS))
1067
1068 #define IBA7322_IBC_RXPOL_MASK SYM_MASK(IBCCtrlB_0, IB_POLARITY_REV_SUPP)
1069 #define IBA7322_IBC_RXPOL_LSB SYM_LSB(IBCCtrlB_0, IB_POLARITY_REV_SUPP)
1070 #define IBA7322_IBC_HRTBT_MASK (SYM_MASK(IBCCtrlB_0, HRTBT_AUTO) | \
1071 SYM_MASK(IBCCtrlB_0, HRTBT_ENB))
1072 #define IBA7322_IBC_HRTBT_RMASK (IBA7322_IBC_HRTBT_MASK >> \
1073 SYM_LSB(IBCCtrlB_0, HRTBT_ENB))
1074 #define IBA7322_IBC_HRTBT_LSB SYM_LSB(IBCCtrlB_0, HRTBT_ENB)
1075
1076 #define IBA7322_REDIRECT_VEC_PER_REG 12
1077
1078 #define IBA7322_SENDCHK_PKEY SYM_MASK(SendCheckControl_0, PKey_En)
1079 #define IBA7322_SENDCHK_BTHQP SYM_MASK(SendCheckControl_0, BTHQP_En)
1080 #define IBA7322_SENDCHK_SLID SYM_MASK(SendCheckControl_0, SLID_En)
1081 #define IBA7322_SENDCHK_RAW_IPV6 SYM_MASK(SendCheckControl_0, RawIPV6_En)
1082 #define IBA7322_SENDCHK_MINSZ SYM_MASK(SendCheckControl_0, PacketTooSmall_En)
1083
1084 #define AUTONEG_TRIES 3 /* sequential retries to negotiate DDR */
1085
1086 #define HWE_AUTO(fldname) { .mask = SYM_MASK(HwErrMask, fldname##Mask), \
1087 .msg = #fldname }
1088 #define HWE_AUTO_P(fldname, port) { .mask = SYM_MASK(HwErrMask, \
1089 fldname##Mask##_##port), .msg = #fldname }
1090 static const struct qib_hwerror_msgs qib_7322_hwerror_msgs[] = {
1091 HWE_AUTO_P(IBSerdesPClkNotDetect, 1),
1092 HWE_AUTO_P(IBSerdesPClkNotDetect, 0),
1093 HWE_AUTO(PCIESerdesPClkNotDetect),
1094 HWE_AUTO(PowerOnBISTFailed),
1095 HWE_AUTO(TempsenseTholdReached),
1096 HWE_AUTO(MemoryErr),
1097 HWE_AUTO(PCIeBusParityErr),
1098 HWE_AUTO(PcieCplTimeout),
1099 HWE_AUTO(PciePoisonedTLP),
1100 HWE_AUTO_P(SDmaMemReadErr, 1),
1101 HWE_AUTO_P(SDmaMemReadErr, 0),
1102 HWE_AUTO_P(IBCBusFromSPCParityErr, 1),
1103 HWE_AUTO_P(IBCBusToSPCParityErr, 1),
1104 HWE_AUTO_P(IBCBusFromSPCParityErr, 0),
1105 HWE_AUTO(statusValidNoEop),
1106 HWE_AUTO(LATriggered),
1107 { .mask = 0 }
1108 };
1109
1110 #define E_AUTO(fldname) { .mask = SYM_MASK(ErrMask, fldname##Mask), \
1111 .msg = #fldname }
1112 #define E_P_AUTO(fldname) { .mask = SYM_MASK(ErrMask_0, fldname##Mask), \
1113 .msg = #fldname }
1114 static const struct qib_hwerror_msgs qib_7322error_msgs[] = {
1115 E_AUTO(ResetNegated),
1116 E_AUTO(HardwareErr),
1117 E_AUTO(InvalidAddrErr),
1118 E_AUTO(SDmaVL15Err),
1119 E_AUTO(SBufVL15MisUseErr),
1120 E_AUTO(InvalidEEPCmd),
1121 E_AUTO(RcvContextShareErr),
1122 E_AUTO(SendVLMismatchErr),
1123 E_AUTO(SendArmLaunchErr),
1124 E_AUTO(SendSpecialTriggerErr),
1125 E_AUTO(SDmaWrongPortErr),
1126 E_AUTO(SDmaBufMaskDuplicateErr),
1127 E_AUTO(RcvHdrFullErr),
1128 E_AUTO(RcvEgrFullErr),
1129 { .mask = 0 }
1130 };
1131
1132 static const struct qib_hwerror_msgs qib_7322p_error_msgs[] = {
1133 E_P_AUTO(IBStatusChanged),
1134 E_P_AUTO(SHeadersErr),
1135 E_P_AUTO(VL15BufMisuseErr),
1136 /*
1137 * SDmaHaltErr is not really an error, make it clearer;
1138 */
1139 {.mask = SYM_MASK(ErrMask_0, SDmaHaltErrMask), .msg = "SDmaHalted"},
1140 E_P_AUTO(SDmaDescAddrMisalignErr),
1141 E_P_AUTO(SDmaUnexpDataErr),
1142 E_P_AUTO(SDmaMissingDwErr),
1143 E_P_AUTO(SDmaDwEnErr),
1144 E_P_AUTO(SDmaRpyTagErr),
1145 E_P_AUTO(SDma1stDescErr),
1146 E_P_AUTO(SDmaBaseErr),
1147 E_P_AUTO(SDmaTailOutOfBoundErr),
1148 E_P_AUTO(SDmaOutOfBoundErr),
1149 E_P_AUTO(SDmaGenMismatchErr),
1150 E_P_AUTO(SendBufMisuseErr),
1151 E_P_AUTO(SendUnsupportedVLErr),
1152 E_P_AUTO(SendUnexpectedPktNumErr),
1153 E_P_AUTO(SendDroppedDataPktErr),
1154 E_P_AUTO(SendDroppedSmpPktErr),
1155 E_P_AUTO(SendPktLenErr),
1156 E_P_AUTO(SendUnderRunErr),
1157 E_P_AUTO(SendMaxPktLenErr),
1158 E_P_AUTO(SendMinPktLenErr),
1159 E_P_AUTO(RcvIBLostLinkErr),
1160 E_P_AUTO(RcvHdrErr),
1161 E_P_AUTO(RcvHdrLenErr),
1162 E_P_AUTO(RcvBadTidErr),
1163 E_P_AUTO(RcvBadVersionErr),
1164 E_P_AUTO(RcvIBFlowErr),
1165 E_P_AUTO(RcvEBPErr),
1166 E_P_AUTO(RcvUnsupportedVLErr),
1167 E_P_AUTO(RcvUnexpectedCharErr),
1168 E_P_AUTO(RcvShortPktLenErr),
1169 E_P_AUTO(RcvLongPktLenErr),
1170 E_P_AUTO(RcvMaxPktLenErr),
1171 E_P_AUTO(RcvMinPktLenErr),
1172 E_P_AUTO(RcvICRCErr),
1173 E_P_AUTO(RcvVCRCErr),
1174 E_P_AUTO(RcvFormatErr),
1175 { .mask = 0 }
1176 };
1177
1178 /*
1179 * Below generates "auto-message" for interrupts not specific to any port or
1180 * context
1181 */
1182 #define INTR_AUTO(fldname) { .mask = SYM_MASK(IntMask, fldname##Mask), \
1183 .msg = #fldname }
1184 /* Below generates "auto-message" for interrupts specific to a port */
1185 #define INTR_AUTO_P(fldname) { .mask = MASK_ACROSS(\
1186 SYM_LSB(IntMask, fldname##Mask##_0), \
1187 SYM_LSB(IntMask, fldname##Mask##_1)), \
1188 .msg = #fldname "_P" }
1189 /* For some reason, the SerDesTrimDone bits are reversed */
1190 #define INTR_AUTO_PI(fldname) { .mask = MASK_ACROSS(\
1191 SYM_LSB(IntMask, fldname##Mask##_1), \
1192 SYM_LSB(IntMask, fldname##Mask##_0)), \
1193 .msg = #fldname "_P" }
1194 /*
1195 * Below generates "auto-message" for interrupts specific to a context,
1196 * with ctxt-number appended
1197 */
1198 #define INTR_AUTO_C(fldname) { .mask = MASK_ACROSS(\
1199 SYM_LSB(IntMask, fldname##0IntMask), \
1200 SYM_LSB(IntMask, fldname##17IntMask)), \
1201 .msg = #fldname "_C"}
1202
1203 static const struct qib_hwerror_msgs qib_7322_intr_msgs[] = {
1204 INTR_AUTO_P(SDmaInt),
1205 INTR_AUTO_P(SDmaProgressInt),
1206 INTR_AUTO_P(SDmaIdleInt),
1207 INTR_AUTO_P(SDmaCleanupDone),
1208 INTR_AUTO_C(RcvUrg),
1209 INTR_AUTO_P(ErrInt),
1210 INTR_AUTO(ErrInt), /* non-port-specific errs */
1211 INTR_AUTO(AssertGPIOInt),
1212 INTR_AUTO_P(SendDoneInt),
1213 INTR_AUTO(SendBufAvailInt),
1214 INTR_AUTO_C(RcvAvail),
1215 { .mask = 0 }
1216 };
1217
1218 #define TXSYMPTOM_AUTO_P(fldname) \
1219 { .mask = SYM_MASK(SendHdrErrSymptom_0, fldname), .msg = #fldname }
1220 static const struct qib_hwerror_msgs hdrchk_msgs[] = {
1221 TXSYMPTOM_AUTO_P(NonKeyPacket),
1222 TXSYMPTOM_AUTO_P(GRHFail),
1223 TXSYMPTOM_AUTO_P(PkeyFail),
1224 TXSYMPTOM_AUTO_P(QPFail),
1225 TXSYMPTOM_AUTO_P(SLIDFail),
1226 TXSYMPTOM_AUTO_P(RawIPV6),
1227 TXSYMPTOM_AUTO_P(PacketTooSmall),
1228 { .mask = 0 }
1229 };
1230
1231 #define IBA7322_HDRHEAD_PKTINT_SHIFT 32 /* interrupt cnt in upper 32 bits */
1232
1233 /*
1234 * Called when we might have an error that is specific to a particular
1235 * PIO buffer, and may need to cancel that buffer, so it can be re-used,
1236 * because we don't need to force the update of pioavail
1237 */
1238 static void qib_disarm_7322_senderrbufs(struct qib_pportdata *ppd)
1239 {
1240 struct qib_devdata *dd = ppd->dd;
1241 u32 i;
1242 int any;
1243 u32 piobcnt = dd->piobcnt2k + dd->piobcnt4k + NUM_VL15_BUFS;
1244 u32 regcnt = (piobcnt + BITS_PER_LONG - 1) / BITS_PER_LONG;
1245 unsigned long sbuf[4];
1246
1247 /*
1248 * It's possible that sendbuffererror could have bits set; might
1249 * have already done this as a result of hardware error handling.
1250 */
1251 any = 0;
1252 for (i = 0; i < regcnt; ++i) {
1253 sbuf[i] = qib_read_kreg64(dd, kr_sendbuffererror + i);
1254 if (sbuf[i]) {
1255 any = 1;
1256 qib_write_kreg(dd, kr_sendbuffererror + i, sbuf[i]);
1257 }
1258 }
1259
1260 if (any)
1261 qib_disarm_piobufs_set(dd, sbuf, piobcnt);
1262 }
1263
1264 /* No txe_recover yet, if ever */
1265
1266 /* No decode__errors yet */
1267 static void err_decode(char *msg, size_t len, u64 errs,
1268 const struct qib_hwerror_msgs *msp)
1269 {
1270 u64 these, lmask;
1271 int took, multi, n = 0;
1272
1273 while (msp && msp->mask) {
1274 multi = (msp->mask & (msp->mask - 1));
1275 while (errs & msp->mask) {
1276 these = (errs & msp->mask);
1277 lmask = (these & (these - 1)) ^ these;
1278 if (len) {
1279 if (n++) {
1280 /* separate the strings */
1281 *msg++ = ',';
1282 len--;
1283 }
1284 took = scnprintf(msg, len, "%s", msp->msg);
1285 len -= took;
1286 msg += took;
1287 }
1288 errs &= ~lmask;
1289 if (len && multi) {
1290 /* More than one bit this mask */
1291 int idx = -1;
1292
1293 while (lmask & msp->mask) {
1294 ++idx;
1295 lmask >>= 1;
1296 }
1297 took = scnprintf(msg, len, "_%d", idx);
1298 len -= took;
1299 msg += took;
1300 }
1301 }
1302 ++msp;
1303 }
1304 /* If some bits are left, show in hex. */
1305 if (len && errs)
1306 snprintf(msg, len, "%sMORE:%llX", n ? "," : "",
1307 (unsigned long long) errs);
1308 }
1309
1310 /* only called if r1 set */
1311 static void flush_fifo(struct qib_pportdata *ppd)
1312 {
1313 struct qib_devdata *dd = ppd->dd;
1314 u32 __iomem *piobuf;
1315 u32 bufn;
1316 u32 *hdr;
1317 u64 pbc;
1318 const unsigned hdrwords = 7;
1319 static struct qib_ib_header ibhdr = {
1320 .lrh[0] = cpu_to_be16(0xF000 | QIB_LRH_BTH),
1321 .lrh[1] = IB_LID_PERMISSIVE,
1322 .lrh[2] = cpu_to_be16(hdrwords + SIZE_OF_CRC),
1323 .lrh[3] = IB_LID_PERMISSIVE,
1324 .u.oth.bth[0] = cpu_to_be32(
1325 (IB_OPCODE_UD_SEND_ONLY << 24) | QIB_DEFAULT_P_KEY),
1326 .u.oth.bth[1] = cpu_to_be32(0),
1327 .u.oth.bth[2] = cpu_to_be32(0),
1328 .u.oth.u.ud.deth[0] = cpu_to_be32(0),
1329 .u.oth.u.ud.deth[1] = cpu_to_be32(0),
1330 };
1331
1332 /*
1333 * Send a dummy VL15 packet to flush the launch FIFO.
1334 * This will not actually be sent since the TxeBypassIbc bit is set.
1335 */
1336 pbc = PBC_7322_VL15_SEND |
1337 (((u64)ppd->hw_pidx) << (PBC_PORT_SEL_LSB + 32)) |
1338 (hdrwords + SIZE_OF_CRC);
1339 piobuf = qib_7322_getsendbuf(ppd, pbc, &bufn);
1340 if (!piobuf)
1341 return;
1342 writeq(pbc, piobuf);
1343 hdr = (u32 *) &ibhdr;
1344 if (dd->flags & QIB_PIO_FLUSH_WC) {
1345 qib_flush_wc();
1346 qib_pio_copy(piobuf + 2, hdr, hdrwords - 1);
1347 qib_flush_wc();
1348 __raw_writel(hdr[hdrwords - 1], piobuf + hdrwords + 1);
1349 qib_flush_wc();
1350 } else
1351 qib_pio_copy(piobuf + 2, hdr, hdrwords);
1352 qib_sendbuf_done(dd, bufn);
1353 }
1354
1355 /*
1356 * This is called with interrupts disabled and sdma_lock held.
1357 */
1358 static void qib_7322_sdma_sendctrl(struct qib_pportdata *ppd, unsigned op)
1359 {
1360 struct qib_devdata *dd = ppd->dd;
1361 u64 set_sendctrl = 0;
1362 u64 clr_sendctrl = 0;
1363
1364 if (op & QIB_SDMA_SENDCTRL_OP_ENABLE)
1365 set_sendctrl |= SYM_MASK(SendCtrl_0, SDmaEnable);
1366 else
1367 clr_sendctrl |= SYM_MASK(SendCtrl_0, SDmaEnable);
1368
1369 if (op & QIB_SDMA_SENDCTRL_OP_INTENABLE)
1370 set_sendctrl |= SYM_MASK(SendCtrl_0, SDmaIntEnable);
1371 else
1372 clr_sendctrl |= SYM_MASK(SendCtrl_0, SDmaIntEnable);
1373
1374 if (op & QIB_SDMA_SENDCTRL_OP_HALT)
1375 set_sendctrl |= SYM_MASK(SendCtrl_0, SDmaHalt);
1376 else
1377 clr_sendctrl |= SYM_MASK(SendCtrl_0, SDmaHalt);
1378
1379 if (op & QIB_SDMA_SENDCTRL_OP_DRAIN)
1380 set_sendctrl |= SYM_MASK(SendCtrl_0, TxeBypassIbc) |
1381 SYM_MASK(SendCtrl_0, TxeAbortIbc) |
1382 SYM_MASK(SendCtrl_0, TxeDrainRmFifo);
1383 else
1384 clr_sendctrl |= SYM_MASK(SendCtrl_0, TxeBypassIbc) |
1385 SYM_MASK(SendCtrl_0, TxeAbortIbc) |
1386 SYM_MASK(SendCtrl_0, TxeDrainRmFifo);
1387
1388 spin_lock(&dd->sendctrl_lock);
1389
1390 /* If we are draining everything, block sends first */
1391 if (op & QIB_SDMA_SENDCTRL_OP_DRAIN) {
1392 ppd->p_sendctrl &= ~SYM_MASK(SendCtrl_0, SendEnable);
1393 qib_write_kreg_port(ppd, krp_sendctrl, ppd->p_sendctrl);
1394 qib_write_kreg(dd, kr_scratch, 0);
1395 }
1396
1397 ppd->p_sendctrl |= set_sendctrl;
1398 ppd->p_sendctrl &= ~clr_sendctrl;
1399
1400 if (op & QIB_SDMA_SENDCTRL_OP_CLEANUP)
1401 qib_write_kreg_port(ppd, krp_sendctrl,
1402 ppd->p_sendctrl |
1403 SYM_MASK(SendCtrl_0, SDmaCleanup));
1404 else
1405 qib_write_kreg_port(ppd, krp_sendctrl, ppd->p_sendctrl);
1406 qib_write_kreg(dd, kr_scratch, 0);
1407
1408 if (op & QIB_SDMA_SENDCTRL_OP_DRAIN) {
1409 ppd->p_sendctrl |= SYM_MASK(SendCtrl_0, SendEnable);
1410 qib_write_kreg_port(ppd, krp_sendctrl, ppd->p_sendctrl);
1411 qib_write_kreg(dd, kr_scratch, 0);
1412 }
1413
1414 spin_unlock(&dd->sendctrl_lock);
1415
1416 if ((op & QIB_SDMA_SENDCTRL_OP_DRAIN) && ppd->dd->cspec->r1)
1417 flush_fifo(ppd);
1418 }
1419
1420 static void qib_7322_sdma_hw_clean_up(struct qib_pportdata *ppd)
1421 {
1422 __qib_sdma_process_event(ppd, qib_sdma_event_e50_hw_cleaned);
1423 }
1424
1425 static void qib_sdma_7322_setlengen(struct qib_pportdata *ppd)
1426 {
1427 /*
1428 * Set SendDmaLenGen and clear and set
1429 * the MSB of the generation count to enable generation checking
1430 * and load the internal generation counter.
1431 */
1432 qib_write_kreg_port(ppd, krp_senddmalengen, ppd->sdma_descq_cnt);
1433 qib_write_kreg_port(ppd, krp_senddmalengen,
1434 ppd->sdma_descq_cnt |
1435 (1ULL << QIB_7322_SendDmaLenGen_0_Generation_MSB));
1436 }
1437
1438 /*
1439 * Must be called with sdma_lock held, or before init finished.
1440 */
1441 static void qib_sdma_update_7322_tail(struct qib_pportdata *ppd, u16 tail)
1442 {
1443 /* Commit writes to memory and advance the tail on the chip */
1444 wmb();
1445 ppd->sdma_descq_tail = tail;
1446 qib_write_kreg_port(ppd, krp_senddmatail, tail);
1447 }
1448
1449 /*
1450 * This is called with interrupts disabled and sdma_lock held.
1451 */
1452 static void qib_7322_sdma_hw_start_up(struct qib_pportdata *ppd)
1453 {
1454 /*
1455 * Drain all FIFOs.
1456 * The hardware doesn't require this but we do it so that verbs
1457 * and user applications don't wait for link active to send stale
1458 * data.
1459 */
1460 sendctrl_7322_mod(ppd, QIB_SENDCTRL_FLUSH);
1461
1462 qib_sdma_7322_setlengen(ppd);
1463 qib_sdma_update_7322_tail(ppd, 0); /* Set SendDmaTail */
1464 ppd->sdma_head_dma[0] = 0;
1465 qib_7322_sdma_sendctrl(ppd,
1466 ppd->sdma_state.current_op | QIB_SDMA_SENDCTRL_OP_CLEANUP);
1467 }
1468
1469 #define DISABLES_SDMA ( \
1470 QIB_E_P_SDMAHALT | \
1471 QIB_E_P_SDMADESCADDRMISALIGN | \
1472 QIB_E_P_SDMAMISSINGDW | \
1473 QIB_E_P_SDMADWEN | \
1474 QIB_E_P_SDMARPYTAG | \
1475 QIB_E_P_SDMA1STDESC | \
1476 QIB_E_P_SDMABASE | \
1477 QIB_E_P_SDMATAILOUTOFBOUND | \
1478 QIB_E_P_SDMAOUTOFBOUND | \
1479 QIB_E_P_SDMAGENMISMATCH)
1480
1481 static void sdma_7322_p_errors(struct qib_pportdata *ppd, u64 errs)
1482 {
1483 unsigned long flags;
1484 struct qib_devdata *dd = ppd->dd;
1485
1486 errs &= QIB_E_P_SDMAERRS;
1487
1488 if (errs & QIB_E_P_SDMAUNEXPDATA)
1489 qib_dev_err(dd, "IB%u:%u SDmaUnexpData\n", dd->unit,
1490 ppd->port);
1491
1492 spin_lock_irqsave(&ppd->sdma_lock, flags);
1493
1494 switch (ppd->sdma_state.current_state) {
1495 case qib_sdma_state_s00_hw_down:
1496 break;
1497
1498 case qib_sdma_state_s10_hw_start_up_wait:
1499 if (errs & QIB_E_P_SDMAHALT)
1500 __qib_sdma_process_event(ppd,
1501 qib_sdma_event_e20_hw_started);
1502 break;
1503
1504 case qib_sdma_state_s20_idle:
1505 break;
1506
1507 case qib_sdma_state_s30_sw_clean_up_wait:
1508 break;
1509
1510 case qib_sdma_state_s40_hw_clean_up_wait:
1511 if (errs & QIB_E_P_SDMAHALT)
1512 __qib_sdma_process_event(ppd,
1513 qib_sdma_event_e50_hw_cleaned);
1514 break;
1515
1516 case qib_sdma_state_s50_hw_halt_wait:
1517 if (errs & QIB_E_P_SDMAHALT)
1518 __qib_sdma_process_event(ppd,
1519 qib_sdma_event_e60_hw_halted);
1520 break;
1521
1522 case qib_sdma_state_s99_running:
1523 __qib_sdma_process_event(ppd, qib_sdma_event_e7322_err_halted);
1524 __qib_sdma_process_event(ppd, qib_sdma_event_e60_hw_halted);
1525 break;
1526 }
1527
1528 spin_unlock_irqrestore(&ppd->sdma_lock, flags);
1529 }
1530
1531 /*
1532 * handle per-device errors (not per-port errors)
1533 */
1534 static noinline void handle_7322_errors(struct qib_devdata *dd)
1535 {
1536 char *msg;
1537 u64 iserr = 0;
1538 u64 errs;
1539 u64 mask;
1540 int log_idx;
1541
1542 qib_stats.sps_errints++;
1543 errs = qib_read_kreg64(dd, kr_errstatus);
1544 if (!errs) {
1545 qib_devinfo(dd->pcidev, "device error interrupt, "
1546 "but no error bits set!\n");
1547 goto done;
1548 }
1549
1550 /* don't report errors that are masked */
1551 errs &= dd->cspec->errormask;
1552 msg = dd->cspec->emsgbuf;
1553
1554 /* do these first, they are most important */
1555 if (errs & QIB_E_HARDWARE) {
1556 *msg = '\0';
1557 qib_7322_handle_hwerrors(dd, msg, sizeof dd->cspec->emsgbuf);
1558 } else
1559 for (log_idx = 0; log_idx < QIB_EEP_LOG_CNT; ++log_idx)
1560 if (errs & dd->eep_st_masks[log_idx].errs_to_log)
1561 qib_inc_eeprom_err(dd, log_idx, 1);
1562
1563 if (errs & QIB_E_SPKTERRS) {
1564 qib_disarm_7322_senderrbufs(dd->pport);
1565 qib_stats.sps_txerrs++;
1566 } else if (errs & QIB_E_INVALIDADDR)
1567 qib_stats.sps_txerrs++;
1568 else if (errs & QIB_E_ARMLAUNCH) {
1569 qib_stats.sps_txerrs++;
1570 qib_disarm_7322_senderrbufs(dd->pport);
1571 }
1572 qib_write_kreg(dd, kr_errclear, errs);
1573
1574 /*
1575 * The ones we mask off are handled specially below
1576 * or above. Also mask SDMADISABLED by default as it
1577 * is too chatty.
1578 */
1579 mask = QIB_E_HARDWARE;
1580 *msg = '\0';
1581
1582 err_decode(msg, sizeof dd->cspec->emsgbuf, errs & ~mask,
1583 qib_7322error_msgs);
1584
1585 /*
1586 * Getting reset is a tragedy for all ports. Mark the device
1587 * _and_ the ports as "offline" in way meaningful to each.
1588 */
1589 if (errs & QIB_E_RESET) {
1590 int pidx;
1591
1592 qib_dev_err(dd, "Got reset, requires re-init "
1593 "(unload and reload driver)\n");
1594 dd->flags &= ~QIB_INITTED; /* needs re-init */
1595 /* mark as having had error */
1596 *dd->devstatusp |= QIB_STATUS_HWERROR;
1597 for (pidx = 0; pidx < dd->num_pports; ++pidx)
1598 if (dd->pport[pidx].link_speed_supported)
1599 *dd->pport[pidx].statusp &= ~QIB_STATUS_IB_CONF;
1600 }
1601
1602 if (*msg && iserr)
1603 qib_dev_err(dd, "%s error\n", msg);
1604
1605 /*
1606 * If there were hdrq or egrfull errors, wake up any processes
1607 * waiting in poll. We used to try to check which contexts had
1608 * the overflow, but given the cost of that and the chip reads
1609 * to support it, it's better to just wake everybody up if we
1610 * get an overflow; waiters can poll again if it's not them.
1611 */
1612 if (errs & (ERR_MASK(RcvEgrFullErr) | ERR_MASK(RcvHdrFullErr))) {
1613 qib_handle_urcv(dd, ~0U);
1614 if (errs & ERR_MASK(RcvEgrFullErr))
1615 qib_stats.sps_buffull++;
1616 else
1617 qib_stats.sps_hdrfull++;
1618 }
1619
1620 done:
1621 return;
1622 }
1623
1624 static void reenable_chase(unsigned long opaque)
1625 {
1626 struct qib_pportdata *ppd = (struct qib_pportdata *)opaque;
1627
1628 ppd->cpspec->chase_timer.expires = 0;
1629 qib_set_ib_7322_lstate(ppd, QLOGIC_IB_IBCC_LINKCMD_DOWN,
1630 QLOGIC_IB_IBCC_LINKINITCMD_POLL);
1631 }
1632
1633 static void disable_chase(struct qib_pportdata *ppd, u64 tnow, u8 ibclt)
1634 {
1635 ppd->cpspec->chase_end = 0;
1636
1637 if (!qib_chase)
1638 return;
1639
1640 qib_set_ib_7322_lstate(ppd, QLOGIC_IB_IBCC_LINKCMD_DOWN,
1641 QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
1642 ppd->cpspec->chase_timer.expires = jiffies + QIB_CHASE_DIS_TIME;
1643 add_timer(&ppd->cpspec->chase_timer);
1644 }
1645
1646 static void handle_serdes_issues(struct qib_pportdata *ppd, u64 ibcst)
1647 {
1648 u8 ibclt;
1649 u64 tnow;
1650
1651 ibclt = (u8)SYM_FIELD(ibcst, IBCStatusA_0, LinkTrainingState);
1652
1653 /*
1654 * Detect and handle the state chase issue, where we can
1655 * get stuck if we are unlucky on timing on both sides of
1656 * the link. If we are, we disable, set a timer, and
1657 * then re-enable.
1658 */
1659 switch (ibclt) {
1660 case IB_7322_LT_STATE_CFGRCVFCFG:
1661 case IB_7322_LT_STATE_CFGWAITRMT:
1662 case IB_7322_LT_STATE_TXREVLANES:
1663 case IB_7322_LT_STATE_CFGENH:
1664 tnow = get_jiffies_64();
1665 if (ppd->cpspec->chase_end &&
1666 time_after64(tnow, ppd->cpspec->chase_end))
1667 disable_chase(ppd, tnow, ibclt);
1668 else if (!ppd->cpspec->chase_end)
1669 ppd->cpspec->chase_end = tnow + QIB_CHASE_TIME;
1670 break;
1671 default:
1672 ppd->cpspec->chase_end = 0;
1673 break;
1674 }
1675
1676 if (ibclt == IB_7322_LT_STATE_CFGTEST &&
1677 (ibcst & SYM_MASK(IBCStatusA_0, LinkSpeedQDR))) {
1678 force_h1(ppd);
1679 ppd->cpspec->qdr_reforce = 1;
1680 } else if (ppd->cpspec->qdr_reforce &&
1681 (ibcst & SYM_MASK(IBCStatusA_0, LinkSpeedQDR)) &&
1682 (ibclt == IB_7322_LT_STATE_CFGENH ||
1683 ibclt == IB_7322_LT_STATE_CFGIDLE ||
1684 ibclt == IB_7322_LT_STATE_LINKUP))
1685 force_h1(ppd);
1686
1687 if ((IS_QMH(ppd->dd) || IS_QME(ppd->dd)) &&
1688 ppd->link_speed_enabled == QIB_IB_QDR &&
1689 (ibclt == IB_7322_LT_STATE_CFGTEST ||
1690 ibclt == IB_7322_LT_STATE_CFGENH ||
1691 (ibclt >= IB_7322_LT_STATE_POLLACTIVE &&
1692 ibclt <= IB_7322_LT_STATE_SLEEPQUIET)))
1693 adj_tx_serdes(ppd);
1694
1695 if (!ppd->cpspec->qdr_dfe_on && ibclt != IB_7322_LT_STATE_LINKUP &&
1696 ibclt <= IB_7322_LT_STATE_SLEEPQUIET) {
1697 ppd->cpspec->qdr_dfe_on = 1;
1698 ppd->cpspec->qdr_dfe_time = 0;
1699 /* On link down, reenable QDR adaptation */
1700 qib_write_kreg_port(ppd, krp_static_adapt_dis(2),
1701 ppd->dd->cspec->r1 ?
1702 QDR_STATIC_ADAPT_DOWN_R1 :
1703 QDR_STATIC_ADAPT_DOWN);
1704 }
1705 }
1706
1707 /*
1708 * This is per-pport error handling.
1709 * will likely get it's own MSIx interrupt (one for each port,
1710 * although just a single handler).
1711 */
1712 static noinline void handle_7322_p_errors(struct qib_pportdata *ppd)
1713 {
1714 char *msg;
1715 u64 ignore_this_time = 0, iserr = 0, errs, fmask;
1716 struct qib_devdata *dd = ppd->dd;
1717
1718 /* do this as soon as possible */
1719 fmask = qib_read_kreg64(dd, kr_act_fmask);
1720 if (!fmask)
1721 check_7322_rxe_status(ppd);
1722
1723 errs = qib_read_kreg_port(ppd, krp_errstatus);
1724 if (!errs)
1725 qib_devinfo(dd->pcidev,
1726 "Port%d error interrupt, but no error bits set!\n",
1727 ppd->port);
1728 if (!fmask)
1729 errs &= ~QIB_E_P_IBSTATUSCHANGED;
1730 if (!errs)
1731 goto done;
1732
1733 msg = ppd->cpspec->epmsgbuf;
1734 *msg = '\0';
1735
1736 if (errs & ~QIB_E_P_BITSEXTANT) {
1737 err_decode(msg, sizeof ppd->cpspec->epmsgbuf,
1738 errs & ~QIB_E_P_BITSEXTANT, qib_7322p_error_msgs);
1739 if (!*msg)
1740 snprintf(msg, sizeof ppd->cpspec->epmsgbuf,
1741 "no others");
1742 qib_dev_porterr(dd, ppd->port, "error interrupt with unknown"
1743 " errors 0x%016Lx set (and %s)\n",
1744 (errs & ~QIB_E_P_BITSEXTANT), msg);
1745 *msg = '\0';
1746 }
1747
1748 if (errs & QIB_E_P_SHDR) {
1749 u64 symptom;
1750
1751 /* determine cause, then write to clear */
1752 symptom = qib_read_kreg_port(ppd, krp_sendhdrsymptom);
1753 qib_write_kreg_port(ppd, krp_sendhdrsymptom, 0);
1754 err_decode(msg, sizeof ppd->cpspec->epmsgbuf, symptom,
1755 hdrchk_msgs);
1756 *msg = '\0';
1757 /* senderrbuf cleared in SPKTERRS below */
1758 }
1759
1760 if (errs & QIB_E_P_SPKTERRS) {
1761 if ((errs & QIB_E_P_LINK_PKTERRS) &&
1762 !(ppd->lflags & QIBL_LINKACTIVE)) {
1763 /*
1764 * This can happen when trying to bring the link
1765 * up, but the IB link changes state at the "wrong"
1766 * time. The IB logic then complains that the packet
1767 * isn't valid. We don't want to confuse people, so
1768 * we just don't print them, except at debug
1769 */
1770 err_decode(msg, sizeof ppd->cpspec->epmsgbuf,
1771 (errs & QIB_E_P_LINK_PKTERRS),
1772 qib_7322p_error_msgs);
1773 *msg = '\0';
1774 ignore_this_time = errs & QIB_E_P_LINK_PKTERRS;
1775 }
1776 qib_disarm_7322_senderrbufs(ppd);
1777 } else if ((errs & QIB_E_P_LINK_PKTERRS) &&
1778 !(ppd->lflags & QIBL_LINKACTIVE)) {
1779 /*
1780 * This can happen when SMA is trying to bring the link
1781 * up, but the IB link changes state at the "wrong" time.
1782 * The IB logic then complains that the packet isn't
1783 * valid. We don't want to confuse people, so we just
1784 * don't print them, except at debug
1785 */
1786 err_decode(msg, sizeof ppd->cpspec->epmsgbuf, errs,
1787 qib_7322p_error_msgs);
1788 ignore_this_time = errs & QIB_E_P_LINK_PKTERRS;
1789 *msg = '\0';
1790 }
1791
1792 qib_write_kreg_port(ppd, krp_errclear, errs);
1793
1794 errs &= ~ignore_this_time;
1795 if (!errs)
1796 goto done;
1797
1798 if (errs & QIB_E_P_RPKTERRS)
1799 qib_stats.sps_rcverrs++;
1800 if (errs & QIB_E_P_SPKTERRS)
1801 qib_stats.sps_txerrs++;
1802
1803 iserr = errs & ~(QIB_E_P_RPKTERRS | QIB_E_P_PKTERRS);
1804
1805 if (errs & QIB_E_P_SDMAERRS)
1806 sdma_7322_p_errors(ppd, errs);
1807
1808 if (errs & QIB_E_P_IBSTATUSCHANGED) {
1809 u64 ibcs;
1810 u8 ltstate;
1811
1812 ibcs = qib_read_kreg_port(ppd, krp_ibcstatus_a);
1813 ltstate = qib_7322_phys_portstate(ibcs);
1814
1815 if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG))
1816 handle_serdes_issues(ppd, ibcs);
1817 if (!(ppd->cpspec->ibcctrl_a &
1818 SYM_MASK(IBCCtrlA_0, IBStatIntReductionEn))) {
1819 /*
1820 * We got our interrupt, so init code should be
1821 * happy and not try alternatives. Now squelch
1822 * other "chatter" from link-negotiation (pre Init)
1823 */
1824 ppd->cpspec->ibcctrl_a |=
1825 SYM_MASK(IBCCtrlA_0, IBStatIntReductionEn);
1826 qib_write_kreg_port(ppd, krp_ibcctrl_a,
1827 ppd->cpspec->ibcctrl_a);
1828 }
1829
1830 /* Update our picture of width and speed from chip */
1831 ppd->link_width_active =
1832 (ibcs & SYM_MASK(IBCStatusA_0, LinkWidthActive)) ?
1833 IB_WIDTH_4X : IB_WIDTH_1X;
1834 ppd->link_speed_active = (ibcs & SYM_MASK(IBCStatusA_0,
1835 LinkSpeedQDR)) ? QIB_IB_QDR : (ibcs &
1836 SYM_MASK(IBCStatusA_0, LinkSpeedActive)) ?
1837 QIB_IB_DDR : QIB_IB_SDR;
1838
1839 if ((ppd->lflags & QIBL_IB_LINK_DISABLED) && ltstate !=
1840 IB_PHYSPORTSTATE_DISABLED)
1841 qib_set_ib_7322_lstate(ppd, 0,
1842 QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
1843 else
1844 /*
1845 * Since going into a recovery state causes the link
1846 * state to go down and since recovery is transitory,
1847 * it is better if we "miss" ever seeing the link
1848 * training state go into recovery (i.e., ignore this
1849 * transition for link state special handling purposes)
1850 * without updating lastibcstat.
1851 */
1852 if (ltstate != IB_PHYSPORTSTATE_LINK_ERR_RECOVER &&
1853 ltstate != IB_PHYSPORTSTATE_RECOVERY_RETRAIN &&
1854 ltstate != IB_PHYSPORTSTATE_RECOVERY_WAITRMT &&
1855 ltstate != IB_PHYSPORTSTATE_RECOVERY_IDLE)
1856 qib_handle_e_ibstatuschanged(ppd, ibcs);
1857 }
1858 if (*msg && iserr)
1859 qib_dev_porterr(dd, ppd->port, "%s error\n", msg);
1860
1861 if (ppd->state_wanted & ppd->lflags)
1862 wake_up_interruptible(&ppd->state_wait);
1863 done:
1864 return;
1865 }
1866
1867 /* enable/disable chip from delivering interrupts */
1868 static void qib_7322_set_intr_state(struct qib_devdata *dd, u32 enable)
1869 {
1870 if (enable) {
1871 if (dd->flags & QIB_BADINTR)
1872 return;
1873 qib_write_kreg(dd, kr_intmask, dd->cspec->int_enable_mask);
1874 /* cause any pending enabled interrupts to be re-delivered */
1875 qib_write_kreg(dd, kr_intclear, 0ULL);
1876 if (dd->cspec->num_msix_entries) {
1877 /* and same for MSIx */
1878 u64 val = qib_read_kreg64(dd, kr_intgranted);
1879 if (val)
1880 qib_write_kreg(dd, kr_intgranted, val);
1881 }
1882 } else
1883 qib_write_kreg(dd, kr_intmask, 0ULL);
1884 }
1885
1886 /*
1887 * Try to cleanup as much as possible for anything that might have gone
1888 * wrong while in freeze mode, such as pio buffers being written by user
1889 * processes (causing armlaunch), send errors due to going into freeze mode,
1890 * etc., and try to avoid causing extra interrupts while doing so.
1891 * Forcibly update the in-memory pioavail register copies after cleanup
1892 * because the chip won't do it while in freeze mode (the register values
1893 * themselves are kept correct).
1894 * Make sure that we don't lose any important interrupts by using the chip
1895 * feature that says that writing 0 to a bit in *clear that is set in
1896 * *status will cause an interrupt to be generated again (if allowed by
1897 * the *mask value).
1898 * This is in chip-specific code because of all of the register accesses,
1899 * even though the details are similar on most chips.
1900 */
1901 static void qib_7322_clear_freeze(struct qib_devdata *dd)
1902 {
1903 int pidx;
1904
1905 /* disable error interrupts, to avoid confusion */
1906 qib_write_kreg(dd, kr_errmask, 0ULL);
1907
1908 for (pidx = 0; pidx < dd->num_pports; ++pidx)
1909 if (dd->pport[pidx].link_speed_supported)
1910 qib_write_kreg_port(dd->pport + pidx, krp_errmask,
1911 0ULL);
1912
1913 /* also disable interrupts; errormask is sometimes overwriten */
1914 qib_7322_set_intr_state(dd, 0);
1915
1916 /* clear the freeze, and be sure chip saw it */
1917 qib_write_kreg(dd, kr_control, dd->control);
1918 qib_read_kreg32(dd, kr_scratch);
1919
1920 /*
1921 * Force new interrupt if any hwerr, error or interrupt bits are
1922 * still set, and clear "safe" send packet errors related to freeze
1923 * and cancelling sends. Re-enable error interrupts before possible
1924 * force of re-interrupt on pending interrupts.
1925 */
1926 qib_write_kreg(dd, kr_hwerrclear, 0ULL);
1927 qib_write_kreg(dd, kr_errclear, E_SPKT_ERRS_IGNORE);
1928 qib_write_kreg(dd, kr_errmask, dd->cspec->errormask);
1929 /* We need to purge per-port errs and reset mask, too */
1930 for (pidx = 0; pidx < dd->num_pports; ++pidx) {
1931 if (!dd->pport[pidx].link_speed_supported)
1932 continue;
1933 qib_write_kreg_port(dd->pport + pidx, krp_errclear, ~0Ull);
1934 qib_write_kreg_port(dd->pport + pidx, krp_errmask, ~0Ull);
1935 }
1936 qib_7322_set_intr_state(dd, 1);
1937 }
1938
1939 /* no error handling to speak of */
1940 /**
1941 * qib_7322_handle_hwerrors - display hardware errors.
1942 * @dd: the qlogic_ib device
1943 * @msg: the output buffer
1944 * @msgl: the size of the output buffer
1945 *
1946 * Use same msg buffer as regular errors to avoid excessive stack
1947 * use. Most hardware errors are catastrophic, but for right now,
1948 * we'll print them and continue. We reuse the same message buffer as
1949 * qib_handle_errors() to avoid excessive stack usage.
1950 */
1951 static void qib_7322_handle_hwerrors(struct qib_devdata *dd, char *msg,
1952 size_t msgl)
1953 {
1954 u64 hwerrs;
1955 u32 ctrl;
1956 int isfatal = 0;
1957
1958 hwerrs = qib_read_kreg64(dd, kr_hwerrstatus);
1959 if (!hwerrs)
1960 goto bail;
1961 if (hwerrs == ~0ULL) {
1962 qib_dev_err(dd, "Read of hardware error status failed "
1963 "(all bits set); ignoring\n");
1964 goto bail;
1965 }
1966 qib_stats.sps_hwerrs++;
1967
1968 /* Always clear the error status register, except BIST fail */
1969 qib_write_kreg(dd, kr_hwerrclear, hwerrs &
1970 ~HWE_MASK(PowerOnBISTFailed));
1971
1972 hwerrs &= dd->cspec->hwerrmask;
1973
1974 /* no EEPROM logging, yet */
1975
1976 if (hwerrs)
1977 qib_devinfo(dd->pcidev, "Hardware error: hwerr=0x%llx "
1978 "(cleared)\n", (unsigned long long) hwerrs);
1979
1980 ctrl = qib_read_kreg32(dd, kr_control);
1981 if ((ctrl & SYM_MASK(Control, FreezeMode)) && !dd->diag_client) {
1982 /*
1983 * No recovery yet...
1984 */
1985 if ((hwerrs & ~HWE_MASK(LATriggered)) ||
1986 dd->cspec->stay_in_freeze) {
1987 /*
1988 * If any set that we aren't ignoring only make the
1989 * complaint once, in case it's stuck or recurring,
1990 * and we get here multiple times
1991 * Force link down, so switch knows, and
1992 * LEDs are turned off.
1993 */
1994 if (dd->flags & QIB_INITTED)
1995 isfatal = 1;
1996 } else
1997 qib_7322_clear_freeze(dd);
1998 }
1999
2000 if (hwerrs & HWE_MASK(PowerOnBISTFailed)) {
2001 isfatal = 1;
2002 strlcpy(msg, "[Memory BIST test failed, "
2003 "InfiniPath hardware unusable]", msgl);
2004 /* ignore from now on, so disable until driver reloaded */
2005 dd->cspec->hwerrmask &= ~HWE_MASK(PowerOnBISTFailed);
2006 qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask);
2007 }
2008
2009 err_decode(msg, msgl, hwerrs, qib_7322_hwerror_msgs);
2010
2011 /* Ignore esoteric PLL failures et al. */
2012
2013 qib_dev_err(dd, "%s hardware error\n", msg);
2014
2015 if (isfatal && !dd->diag_client) {
2016 qib_dev_err(dd, "Fatal Hardware Error, no longer"
2017 " usable, SN %.16s\n", dd->serial);
2018 /*
2019 * for /sys status file and user programs to print; if no
2020 * trailing brace is copied, we'll know it was truncated.
2021 */
2022 if (dd->freezemsg)
2023 snprintf(dd->freezemsg, dd->freezelen,
2024 "{%s}", msg);
2025 qib_disable_after_error(dd);
2026 }
2027 bail:;
2028 }
2029
2030 /**
2031 * qib_7322_init_hwerrors - enable hardware errors
2032 * @dd: the qlogic_ib device
2033 *
2034 * now that we have finished initializing everything that might reasonably
2035 * cause a hardware error, and cleared those errors bits as they occur,
2036 * we can enable hardware errors in the mask (potentially enabling
2037 * freeze mode), and enable hardware errors as errors (along with
2038 * everything else) in errormask
2039 */
2040 static void qib_7322_init_hwerrors(struct qib_devdata *dd)
2041 {
2042 int pidx;
2043 u64 extsval;
2044
2045 extsval = qib_read_kreg64(dd, kr_extstatus);
2046 if (!(extsval & (QIB_EXTS_MEMBIST_DISABLED |
2047 QIB_EXTS_MEMBIST_ENDTEST)))
2048 qib_dev_err(dd, "MemBIST did not complete!\n");
2049
2050 /* never clear BIST failure, so reported on each driver load */
2051 qib_write_kreg(dd, kr_hwerrclear, ~HWE_MASK(PowerOnBISTFailed));
2052 qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask);
2053
2054 /* clear all */
2055 qib_write_kreg(dd, kr_errclear, ~0ULL);
2056 /* enable errors that are masked, at least this first time. */
2057 qib_write_kreg(dd, kr_errmask, ~0ULL);
2058 dd->cspec->errormask = qib_read_kreg64(dd, kr_errmask);
2059 for (pidx = 0; pidx < dd->num_pports; ++pidx)
2060 if (dd->pport[pidx].link_speed_supported)
2061 qib_write_kreg_port(dd->pport + pidx, krp_errmask,
2062 ~0ULL);
2063 }
2064
2065 /*
2066 * Disable and enable the armlaunch error. Used for PIO bandwidth testing
2067 * on chips that are count-based, rather than trigger-based. There is no
2068 * reference counting, but that's also fine, given the intended use.
2069 * Only chip-specific because it's all register accesses
2070 */
2071 static void qib_set_7322_armlaunch(struct qib_devdata *dd, u32 enable)
2072 {
2073 if (enable) {
2074 qib_write_kreg(dd, kr_errclear, QIB_E_SPIOARMLAUNCH);
2075 dd->cspec->errormask |= QIB_E_SPIOARMLAUNCH;
2076 } else
2077 dd->cspec->errormask &= ~QIB_E_SPIOARMLAUNCH;
2078 qib_write_kreg(dd, kr_errmask, dd->cspec->errormask);
2079 }
2080
2081 /*
2082 * Formerly took parameter <which> in pre-shifted,
2083 * pre-merged form with LinkCmd and LinkInitCmd
2084 * together, and assuming the zero was NOP.
2085 */
2086 static void qib_set_ib_7322_lstate(struct qib_pportdata *ppd, u16 linkcmd,
2087 u16 linitcmd)
2088 {
2089 u64 mod_wd;
2090 struct qib_devdata *dd = ppd->dd;
2091 unsigned long flags;
2092
2093 if (linitcmd == QLOGIC_IB_IBCC_LINKINITCMD_DISABLE) {
2094 /*
2095 * If we are told to disable, note that so link-recovery
2096 * code does not attempt to bring us back up.
2097 * Also reset everything that we can, so we start
2098 * completely clean when re-enabled (before we
2099 * actually issue the disable to the IBC)
2100 */
2101 qib_7322_mini_pcs_reset(ppd);
2102 spin_lock_irqsave(&ppd->lflags_lock, flags);
2103 ppd->lflags |= QIBL_IB_LINK_DISABLED;
2104 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
2105 } else if (linitcmd || linkcmd == QLOGIC_IB_IBCC_LINKCMD_DOWN) {
2106 /*
2107 * Any other linkinitcmd will lead to LINKDOWN and then
2108 * to INIT (if all is well), so clear flag to let
2109 * link-recovery code attempt to bring us back up.
2110 */
2111 spin_lock_irqsave(&ppd->lflags_lock, flags);
2112 ppd->lflags &= ~QIBL_IB_LINK_DISABLED;
2113 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
2114 /*
2115 * Clear status change interrupt reduction so the
2116 * new state is seen.
2117 */
2118 ppd->cpspec->ibcctrl_a &=
2119 ~SYM_MASK(IBCCtrlA_0, IBStatIntReductionEn);
2120 }
2121
2122 mod_wd = (linkcmd << IBA7322_IBCC_LINKCMD_SHIFT) |
2123 (linitcmd << QLOGIC_IB_IBCC_LINKINITCMD_SHIFT);
2124
2125 qib_write_kreg_port(ppd, krp_ibcctrl_a, ppd->cpspec->ibcctrl_a |
2126 mod_wd);
2127 /* write to chip to prevent back-to-back writes of ibc reg */
2128 qib_write_kreg(dd, kr_scratch, 0);
2129
2130 }
2131
2132 /*
2133 * The total RCV buffer memory is 64KB, used for both ports, and is
2134 * in units of 64 bytes (same as IB flow control credit unit).
2135 * The consumedVL unit in the same registers are in 32 byte units!
2136 * So, a VL15 packet needs 4.50 IB credits, and 9 rx buffer chunks,
2137 * and we can therefore allocate just 9 IB credits for 2 VL15 packets
2138 * in krp_rxcreditvl15, rather than 10.
2139 */
2140 #define RCV_BUF_UNITSZ 64
2141 #define NUM_RCV_BUF_UNITS(dd) ((64 * 1024) / (RCV_BUF_UNITSZ * dd->num_pports))
2142
2143 static void set_vls(struct qib_pportdata *ppd)
2144 {
2145 int i, numvls, totcred, cred_vl, vl0extra;
2146 struct qib_devdata *dd = ppd->dd;
2147 u64 val;
2148
2149 numvls = qib_num_vls(ppd->vls_operational);
2150
2151 /*
2152 * Set up per-VL credits. Below is kluge based on these assumptions:
2153 * 1) port is disabled at the time early_init is called.
2154 * 2) give VL15 17 credits, for two max-plausible packets.
2155 * 3) Give VL0-N the rest, with any rounding excess used for VL0
2156 */
2157 /* 2 VL15 packets @ 288 bytes each (including IB headers) */
2158 totcred = NUM_RCV_BUF_UNITS(dd);
2159 cred_vl = (2 * 288 + RCV_BUF_UNITSZ - 1) / RCV_BUF_UNITSZ;
2160 totcred -= cred_vl;
2161 qib_write_kreg_port(ppd, krp_rxcreditvl15, (u64) cred_vl);
2162 cred_vl = totcred / numvls;
2163 vl0extra = totcred - cred_vl * numvls;
2164 qib_write_kreg_port(ppd, krp_rxcreditvl0, cred_vl + vl0extra);
2165 for (i = 1; i < numvls; i++)
2166 qib_write_kreg_port(ppd, krp_rxcreditvl0 + i, cred_vl);
2167 for (; i < 8; i++) /* no buffer space for other VLs */
2168 qib_write_kreg_port(ppd, krp_rxcreditvl0 + i, 0);
2169
2170 /* Notify IBC that credits need to be recalculated */
2171 val = qib_read_kreg_port(ppd, krp_ibsdtestiftx);
2172 val |= SYM_MASK(IB_SDTEST_IF_TX_0, CREDIT_CHANGE);
2173 qib_write_kreg_port(ppd, krp_ibsdtestiftx, val);
2174 qib_write_kreg(dd, kr_scratch, 0ULL);
2175 val &= ~SYM_MASK(IB_SDTEST_IF_TX_0, CREDIT_CHANGE);
2176 qib_write_kreg_port(ppd, krp_ibsdtestiftx, val);
2177
2178 for (i = 0; i < numvls; i++)
2179 val = qib_read_kreg_port(ppd, krp_rxcreditvl0 + i);
2180 val = qib_read_kreg_port(ppd, krp_rxcreditvl15);
2181
2182 /* Change the number of operational VLs */
2183 ppd->cpspec->ibcctrl_a = (ppd->cpspec->ibcctrl_a &
2184 ~SYM_MASK(IBCCtrlA_0, NumVLane)) |
2185 ((u64)(numvls - 1) << SYM_LSB(IBCCtrlA_0, NumVLane));
2186 qib_write_kreg_port(ppd, krp_ibcctrl_a, ppd->cpspec->ibcctrl_a);
2187 qib_write_kreg(dd, kr_scratch, 0ULL);
2188 }
2189
2190 /*
2191 * The code that deals with actual SerDes is in serdes_7322_init().
2192 * Compared to the code for iba7220, it is minimal.
2193 */
2194 static int serdes_7322_init(struct qib_pportdata *ppd);
2195
2196 /**
2197 * qib_7322_bringup_serdes - bring up the serdes
2198 * @ppd: physical port on the qlogic_ib device
2199 */
2200 static int qib_7322_bringup_serdes(struct qib_pportdata *ppd)
2201 {
2202 struct qib_devdata *dd = ppd->dd;
2203 u64 val, guid, ibc;
2204 unsigned long flags;
2205 int ret = 0;
2206
2207 /*
2208 * SerDes model not in Pd, but still need to
2209 * set up much of IBCCtrl and IBCDDRCtrl; move elsewhere
2210 * eventually.
2211 */
2212 /* Put IBC in reset, sends disabled (should be in reset already) */
2213 ppd->cpspec->ibcctrl_a &= ~SYM_MASK(IBCCtrlA_0, IBLinkEn);
2214 qib_write_kreg_port(ppd, krp_ibcctrl_a, ppd->cpspec->ibcctrl_a);
2215 qib_write_kreg(dd, kr_scratch, 0ULL);
2216
2217 if (qib_compat_ddr_negotiate) {
2218 ppd->cpspec->ibdeltainprog = 1;
2219 ppd->cpspec->ibsymsnap = read_7322_creg32_port(ppd,
2220 crp_ibsymbolerr);
2221 ppd->cpspec->iblnkerrsnap = read_7322_creg32_port(ppd,
2222 crp_iblinkerrrecov);
2223 }
2224
2225 /* flowcontrolwatermark is in units of KBytes */
2226 ibc = 0x5ULL << SYM_LSB(IBCCtrlA_0, FlowCtrlWaterMark);
2227 /*
2228 * Flow control is sent this often, even if no changes in
2229 * buffer space occur. Units are 128ns for this chip.
2230 * Set to 3usec.
2231 */
2232 ibc |= 24ULL << SYM_LSB(IBCCtrlA_0, FlowCtrlPeriod);
2233 /* max error tolerance */
2234 ibc |= 0xfULL << SYM_LSB(IBCCtrlA_0, PhyerrThreshold);
2235 /* IB credit flow control. */
2236 ibc |= 0xfULL << SYM_LSB(IBCCtrlA_0, OverrunThreshold);
2237 /*
2238 * set initial max size pkt IBC will send, including ICRC; it's the
2239 * PIO buffer size in dwords, less 1; also see qib_set_mtu()
2240 */
2241 ibc |= ((u64)(ppd->ibmaxlen >> 2) + 1) <<
2242 SYM_LSB(IBCCtrlA_0, MaxPktLen);
2243 ppd->cpspec->ibcctrl_a = ibc; /* without linkcmd or linkinitcmd! */
2244
2245 /* initially come up waiting for TS1, without sending anything. */
2246 val = ppd->cpspec->ibcctrl_a | (QLOGIC_IB_IBCC_LINKINITCMD_DISABLE <<
2247 QLOGIC_IB_IBCC_LINKINITCMD_SHIFT);
2248
2249 /*
2250 * Reset the PCS interface to the serdes (and also ibc, which is still
2251 * in reset from above). Writes new value of ibcctrl_a as last step.
2252 */
2253 qib_7322_mini_pcs_reset(ppd);
2254 qib_write_kreg(dd, kr_scratch, 0ULL);
2255
2256 if (!ppd->cpspec->ibcctrl_b) {
2257 unsigned lse = ppd->link_speed_enabled;
2258
2259 /*
2260 * Not on re-init after reset, establish shadow
2261 * and force initial config.
2262 */
2263 ppd->cpspec->ibcctrl_b = qib_read_kreg_port(ppd,
2264 krp_ibcctrl_b);
2265 ppd->cpspec->ibcctrl_b &= ~(IBA7322_IBC_SPEED_QDR |
2266 IBA7322_IBC_SPEED_DDR |
2267 IBA7322_IBC_SPEED_SDR |
2268 IBA7322_IBC_WIDTH_AUTONEG |
2269 SYM_MASK(IBCCtrlB_0, IB_LANE_REV_SUPPORTED));
2270 if (lse & (lse - 1)) /* Muliple speeds enabled */
2271 ppd->cpspec->ibcctrl_b |=
2272 (lse << IBA7322_IBC_SPEED_LSB) |
2273 IBA7322_IBC_IBTA_1_2_MASK |
2274 IBA7322_IBC_MAX_SPEED_MASK;
2275 else
2276 ppd->cpspec->ibcctrl_b |= (lse == QIB_IB_QDR) ?
2277 IBA7322_IBC_SPEED_QDR |
2278 IBA7322_IBC_IBTA_1_2_MASK :
2279 (lse == QIB_IB_DDR) ?
2280 IBA7322_IBC_SPEED_DDR :
2281 IBA7322_IBC_SPEED_SDR;
2282 if ((ppd->link_width_enabled & (IB_WIDTH_1X | IB_WIDTH_4X)) ==
2283 (IB_WIDTH_1X | IB_WIDTH_4X))
2284 ppd->cpspec->ibcctrl_b |= IBA7322_IBC_WIDTH_AUTONEG;
2285 else
2286 ppd->cpspec->ibcctrl_b |=
2287 ppd->link_width_enabled == IB_WIDTH_4X ?
2288 IBA7322_IBC_WIDTH_4X_ONLY :
2289 IBA7322_IBC_WIDTH_1X_ONLY;
2290
2291 /* always enable these on driver reload, not sticky */
2292 ppd->cpspec->ibcctrl_b |= (IBA7322_IBC_RXPOL_MASK |
2293 IBA7322_IBC_HRTBT_MASK);
2294 }
2295 qib_write_kreg_port(ppd, krp_ibcctrl_b, ppd->cpspec->ibcctrl_b);
2296
2297 /* setup so we have more time at CFGTEST to change H1 */
2298 val = qib_read_kreg_port(ppd, krp_ibcctrl_c);
2299 val &= ~SYM_MASK(IBCCtrlC_0, IB_FRONT_PORCH);
2300 val |= 0xfULL << SYM_LSB(IBCCtrlC_0, IB_FRONT_PORCH);
2301 qib_write_kreg_port(ppd, krp_ibcctrl_c, val);
2302
2303 serdes_7322_init(ppd);
2304
2305 guid = be64_to_cpu(ppd->guid);
2306 if (!guid) {
2307 if (dd->base_guid)
2308 guid = be64_to_cpu(dd->base_guid) + ppd->port - 1;
2309 ppd->guid = cpu_to_be64(guid);
2310 }
2311
2312 qib_write_kreg_port(ppd, krp_hrtbt_guid, guid);
2313 /* write to chip to prevent back-to-back writes of ibc reg */
2314 qib_write_kreg(dd, kr_scratch, 0);
2315
2316 /* Enable port */
2317 ppd->cpspec->ibcctrl_a |= SYM_MASK(IBCCtrlA_0, IBLinkEn);
2318 set_vls(ppd);
2319
2320 /* be paranoid against later code motion, etc. */
2321 spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags);
2322 ppd->p_rcvctrl |= SYM_MASK(RcvCtrl_0, RcvIBPortEnable);
2323 qib_write_kreg_port(ppd, krp_rcvctrl, ppd->p_rcvctrl);
2324 spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags);
2325
2326 /* Also enable IBSTATUSCHG interrupt. */
2327 val = qib_read_kreg_port(ppd, krp_errmask);
2328 qib_write_kreg_port(ppd, krp_errmask,
2329 val | ERR_MASK_N(IBStatusChanged));
2330
2331 /* Always zero until we start messing with SerDes for real */
2332 return ret;
2333 }
2334
2335 /**
2336 * qib_7322_quiet_serdes - set serdes to txidle
2337 * @dd: the qlogic_ib device
2338 * Called when driver is being unloaded
2339 */
2340 static void qib_7322_mini_quiet_serdes(struct qib_pportdata *ppd)
2341 {
2342 u64 val;
2343 unsigned long flags;
2344
2345 qib_set_ib_7322_lstate(ppd, 0, QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
2346
2347 spin_lock_irqsave(&ppd->lflags_lock, flags);
2348 ppd->lflags &= ~QIBL_IB_AUTONEG_INPROG;
2349 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
2350 wake_up(&ppd->cpspec->autoneg_wait);
2351 cancel_delayed_work(&ppd->cpspec->autoneg_work);
2352 if (ppd->dd->cspec->r1)
2353 cancel_delayed_work(&ppd->cpspec->ipg_work);
2354 flush_scheduled_work();
2355
2356 ppd->cpspec->chase_end = 0;
2357 if (ppd->cpspec->chase_timer.data) /* if initted */
2358 del_timer_sync(&ppd->cpspec->chase_timer);
2359
2360 /*
2361 * Despite the name, actually disables IBC as well. Do it when
2362 * we are as sure as possible that no more packets can be
2363 * received, following the down and the PCS reset.
2364 * The actual disabling happens in qib_7322_mini_pci_reset(),
2365 * along with the PCS being reset.
2366 */
2367 ppd->cpspec->ibcctrl_a &= ~SYM_MASK(IBCCtrlA_0, IBLinkEn);
2368 qib_7322_mini_pcs_reset(ppd);
2369
2370 /*
2371 * Update the adjusted counters so the adjustment persists
2372 * across driver reload.
2373 */
2374 if (ppd->cpspec->ibsymdelta || ppd->cpspec->iblnkerrdelta ||
2375 ppd->cpspec->ibdeltainprog || ppd->cpspec->iblnkdowndelta) {
2376 struct qib_devdata *dd = ppd->dd;
2377 u64 diagc;
2378
2379 /* enable counter writes */
2380 diagc = qib_read_kreg64(dd, kr_hwdiagctrl);
2381 qib_write_kreg(dd, kr_hwdiagctrl,
2382 diagc | SYM_MASK(HwDiagCtrl, CounterWrEnable));
2383
2384 if (ppd->cpspec->ibsymdelta || ppd->cpspec->ibdeltainprog) {
2385 val = read_7322_creg32_port(ppd, crp_ibsymbolerr);
2386 if (ppd->cpspec->ibdeltainprog)
2387 val -= val - ppd->cpspec->ibsymsnap;
2388 val -= ppd->cpspec->ibsymdelta;
2389 write_7322_creg_port(ppd, crp_ibsymbolerr, val);
2390 }
2391 if (ppd->cpspec->iblnkerrdelta || ppd->cpspec->ibdeltainprog) {
2392 val = read_7322_creg32_port(ppd, crp_iblinkerrrecov);
2393 if (ppd->cpspec->ibdeltainprog)
2394 val -= val - ppd->cpspec->iblnkerrsnap;
2395 val -= ppd->cpspec->iblnkerrdelta;
2396 write_7322_creg_port(ppd, crp_iblinkerrrecov, val);
2397 }
2398 if (ppd->cpspec->iblnkdowndelta) {
2399 val = read_7322_creg32_port(ppd, crp_iblinkdown);
2400 val += ppd->cpspec->iblnkdowndelta;
2401 write_7322_creg_port(ppd, crp_iblinkdown, val);
2402 }
2403 /*
2404 * No need to save ibmalfdelta since IB perfcounters
2405 * are cleared on driver reload.
2406 */
2407
2408 /* and disable counter writes */
2409 qib_write_kreg(dd, kr_hwdiagctrl, diagc);
2410 }
2411 }
2412
2413 /**
2414 * qib_setup_7322_setextled - set the state of the two external LEDs
2415 * @ppd: physical port on the qlogic_ib device
2416 * @on: whether the link is up or not
2417 *
2418 * The exact combo of LEDs if on is true is determined by looking
2419 * at the ibcstatus.
2420 *
2421 * These LEDs indicate the physical and logical state of IB link.
2422 * For this chip (at least with recommended board pinouts), LED1
2423 * is Yellow (logical state) and LED2 is Green (physical state),
2424 *
2425 * Note: We try to match the Mellanox HCA LED behavior as best
2426 * we can. Green indicates physical link state is OK (something is
2427 * plugged in, and we can train).
2428 * Amber indicates the link is logically up (ACTIVE).
2429 * Mellanox further blinks the amber LED to indicate data packet
2430 * activity, but we have no hardware support for that, so it would
2431 * require waking up every 10-20 msecs and checking the counters
2432 * on the chip, and then turning the LED off if appropriate. That's
2433 * visible overhead, so not something we will do.
2434 */
2435 static void qib_setup_7322_setextled(struct qib_pportdata *ppd, u32 on)
2436 {
2437 struct qib_devdata *dd = ppd->dd;
2438 u64 extctl, ledblink = 0, val;
2439 unsigned long flags;
2440 int yel, grn;
2441
2442 /*
2443 * The diags use the LED to indicate diag info, so we leave
2444 * the external LED alone when the diags are running.
2445 */
2446 if (dd->diag_client)
2447 return;
2448
2449 /* Allow override of LED display for, e.g. Locating system in rack */
2450 if (ppd->led_override) {
2451 grn = (ppd->led_override & QIB_LED_PHYS);
2452 yel = (ppd->led_override & QIB_LED_LOG);
2453 } else if (on) {
2454 val = qib_read_kreg_port(ppd, krp_ibcstatus_a);
2455 grn = qib_7322_phys_portstate(val) ==
2456 IB_PHYSPORTSTATE_LINKUP;
2457 yel = qib_7322_iblink_state(val) == IB_PORT_ACTIVE;
2458 } else {
2459 grn = 0;
2460 yel = 0;
2461 }
2462
2463 spin_lock_irqsave(&dd->cspec->gpio_lock, flags);
2464 extctl = dd->cspec->extctrl & (ppd->port == 1 ?
2465 ~ExtLED_IB1_MASK : ~ExtLED_IB2_MASK);
2466 if (grn) {
2467 extctl |= ppd->port == 1 ? ExtLED_IB1_GRN : ExtLED_IB2_GRN;
2468 /*
2469 * Counts are in chip clock (4ns) periods.
2470 * This is 1/16 sec (66.6ms) on,
2471 * 3/16 sec (187.5 ms) off, with packets rcvd.
2472 */
2473 ledblink = ((66600 * 1000UL / 4) << IBA7322_LEDBLINK_ON_SHIFT) |
2474 ((187500 * 1000UL / 4) << IBA7322_LEDBLINK_OFF_SHIFT);
2475 }
2476 if (yel)
2477 extctl |= ppd->port == 1 ? ExtLED_IB1_YEL : ExtLED_IB2_YEL;
2478 dd->cspec->extctrl = extctl;
2479 qib_write_kreg(dd, kr_extctrl, dd->cspec->extctrl);
2480 spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags);
2481
2482 if (ledblink) /* blink the LED on packet receive */
2483 qib_write_kreg_port(ppd, krp_rcvpktledcnt, ledblink);
2484 }
2485
2486 /*
2487 * Disable MSIx interrupt if enabled, call generic MSIx code
2488 * to cleanup, and clear pending MSIx interrupts.
2489 * Used for fallback to INTx, after reset, and when MSIx setup fails.
2490 */
2491 static void qib_7322_nomsix(struct qib_devdata *dd)
2492 {
2493 u64 intgranted;
2494 int n;
2495
2496 dd->cspec->main_int_mask = ~0ULL;
2497 n = dd->cspec->num_msix_entries;
2498 if (n) {
2499 int i;
2500
2501 dd->cspec->num_msix_entries = 0;
2502 for (i = 0; i < n; i++)
2503 free_irq(dd->cspec->msix_entries[i].vector,
2504 dd->cspec->msix_arg[i]);
2505 qib_nomsix(dd);
2506 }
2507 /* make sure no MSIx interrupts are left pending */
2508 intgranted = qib_read_kreg64(dd, kr_intgranted);
2509 if (intgranted)
2510 qib_write_kreg(dd, kr_intgranted, intgranted);
2511 }
2512
2513 static void qib_7322_free_irq(struct qib_devdata *dd)
2514 {
2515 if (dd->cspec->irq) {
2516 free_irq(dd->cspec->irq, dd);
2517 dd->cspec->irq = 0;
2518 }
2519 qib_7322_nomsix(dd);
2520 }
2521
2522 static void qib_setup_7322_cleanup(struct qib_devdata *dd)
2523 {
2524 int i;
2525
2526 qib_7322_free_irq(dd);
2527 kfree(dd->cspec->cntrs);
2528 kfree(dd->cspec->sendchkenable);
2529 kfree(dd->cspec->sendgrhchk);
2530 kfree(dd->cspec->sendibchk);
2531 kfree(dd->cspec->msix_entries);
2532 kfree(dd->cspec->msix_arg);
2533 for (i = 0; i < dd->num_pports; i++) {
2534 unsigned long flags;
2535 u32 mask = QSFP_GPIO_MOD_PRS_N |
2536 (QSFP_GPIO_MOD_PRS_N << QSFP_GPIO_PORT2_SHIFT);
2537
2538 kfree(dd->pport[i].cpspec->portcntrs);
2539 if (dd->flags & QIB_HAS_QSFP) {
2540 spin_lock_irqsave(&dd->cspec->gpio_lock, flags);
2541 dd->cspec->gpio_mask &= ~mask;
2542 qib_write_kreg(dd, kr_gpio_mask, dd->cspec->gpio_mask);
2543 spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags);
2544 qib_qsfp_deinit(&dd->pport[i].cpspec->qsfp_data);
2545 }
2546 if (dd->pport[i].ibport_data.smi_ah)
2547 ib_destroy_ah(&dd->pport[i].ibport_data.smi_ah->ibah);
2548 }
2549 }
2550
2551 /* handle SDMA interrupts */
2552 static void sdma_7322_intr(struct qib_devdata *dd, u64 istat)
2553 {
2554 struct qib_pportdata *ppd0 = &dd->pport[0];
2555 struct qib_pportdata *ppd1 = &dd->pport[1];
2556 u64 intr0 = istat & (INT_MASK_P(SDma, 0) |
2557 INT_MASK_P(SDmaIdle, 0) | INT_MASK_P(SDmaProgress, 0));
2558 u64 intr1 = istat & (INT_MASK_P(SDma, 1) |
2559 INT_MASK_P(SDmaIdle, 1) | INT_MASK_P(SDmaProgress, 1));
2560
2561 if (intr0)
2562 qib_sdma_intr(ppd0);
2563 if (intr1)
2564 qib_sdma_intr(ppd1);
2565
2566 if (istat & INT_MASK_PM(SDmaCleanupDone, 0))
2567 qib_sdma_process_event(ppd0, qib_sdma_event_e20_hw_started);
2568 if (istat & INT_MASK_PM(SDmaCleanupDone, 1))
2569 qib_sdma_process_event(ppd1, qib_sdma_event_e20_hw_started);
2570 }
2571
2572 /*
2573 * Set or clear the Send buffer available interrupt enable bit.
2574 */
2575 static void qib_wantpiobuf_7322_intr(struct qib_devdata *dd, u32 needint)
2576 {
2577 unsigned long flags;
2578
2579 spin_lock_irqsave(&dd->sendctrl_lock, flags);
2580 if (needint)
2581 dd->sendctrl |= SYM_MASK(SendCtrl, SendIntBufAvail);
2582 else
2583 dd->sendctrl &= ~SYM_MASK(SendCtrl, SendIntBufAvail);
2584 qib_write_kreg(dd, kr_sendctrl, dd->sendctrl);
2585 qib_write_kreg(dd, kr_scratch, 0ULL);
2586 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
2587 }
2588
2589 /*
2590 * Somehow got an interrupt with reserved bits set in interrupt status.
2591 * Print a message so we know it happened, then clear them.
2592 * keep mainline interrupt handler cache-friendly
2593 */
2594 static noinline void unknown_7322_ibits(struct qib_devdata *dd, u64 istat)
2595 {
2596 u64 kills;
2597 char msg[128];
2598
2599 kills = istat & ~QIB_I_BITSEXTANT;
2600 qib_dev_err(dd, "Clearing reserved interrupt(s) 0x%016llx:"
2601 " %s\n", (unsigned long long) kills, msg);
2602 qib_write_kreg(dd, kr_intmask, (dd->cspec->int_enable_mask & ~kills));
2603 }
2604
2605 /* keep mainline interrupt handler cache-friendly */
2606 static noinline void unknown_7322_gpio_intr(struct qib_devdata *dd)
2607 {
2608 u32 gpiostatus;
2609 int handled = 0;
2610 int pidx;
2611
2612 /*
2613 * Boards for this chip currently don't use GPIO interrupts,
2614 * so clear by writing GPIOstatus to GPIOclear, and complain
2615 * to developer. To avoid endless repeats, clear
2616 * the bits in the mask, since there is some kind of
2617 * programming error or chip problem.
2618 */
2619 gpiostatus = qib_read_kreg32(dd, kr_gpio_status);
2620 /*
2621 * In theory, writing GPIOstatus to GPIOclear could
2622 * have a bad side-effect on some diagnostic that wanted
2623 * to poll for a status-change, but the various shadows
2624 * make that problematic at best. Diags will just suppress
2625 * all GPIO interrupts during such tests.
2626 */
2627 qib_write_kreg(dd, kr_gpio_clear, gpiostatus);
2628 /*
2629 * Check for QSFP MOD_PRS changes
2630 * only works for single port if IB1 != pidx1
2631 */
2632 for (pidx = 0; pidx < dd->num_pports && (dd->flags & QIB_HAS_QSFP);
2633 ++pidx) {
2634 struct qib_pportdata *ppd;
2635 struct qib_qsfp_data *qd;
2636 u32 mask;
2637 if (!dd->pport[pidx].link_speed_supported)
2638 continue;
2639 mask = QSFP_GPIO_MOD_PRS_N;
2640 ppd = dd->pport + pidx;
2641 mask <<= (QSFP_GPIO_PORT2_SHIFT * ppd->hw_pidx);
2642 if (gpiostatus & dd->cspec->gpio_mask & mask) {
2643 u64 pins;
2644 qd = &ppd->cpspec->qsfp_data;
2645 gpiostatus &= ~mask;
2646 pins = qib_read_kreg64(dd, kr_extstatus);
2647 pins >>= SYM_LSB(EXTStatus, GPIOIn);
2648 if (!(pins & mask)) {
2649 ++handled;
2650 qd->t_insert = get_jiffies_64();
2651 schedule_work(&qd->work);
2652 }
2653 }
2654 }
2655
2656 if (gpiostatus && !handled) {
2657 const u32 mask = qib_read_kreg32(dd, kr_gpio_mask);
2658 u32 gpio_irq = mask & gpiostatus;
2659
2660 /*
2661 * Clear any troublemakers, and update chip from shadow
2662 */
2663 dd->cspec->gpio_mask &= ~gpio_irq;
2664 qib_write_kreg(dd, kr_gpio_mask, dd->cspec->gpio_mask);
2665 }
2666 }
2667
2668 /*
2669 * Handle errors and unusual events first, separate function
2670 * to improve cache hits for fast path interrupt handling.
2671 */
2672 static noinline void unlikely_7322_intr(struct qib_devdata *dd, u64 istat)
2673 {
2674 if (istat & ~QIB_I_BITSEXTANT)
2675 unknown_7322_ibits(dd, istat);
2676 if (istat & QIB_I_GPIO)
2677 unknown_7322_gpio_intr(dd);
2678 if (istat & QIB_I_C_ERROR)
2679 handle_7322_errors(dd);
2680 if (istat & INT_MASK_P(Err, 0) && dd->rcd[0])
2681 handle_7322_p_errors(dd->rcd[0]->ppd);
2682 if (istat & INT_MASK_P(Err, 1) && dd->rcd[1])
2683 handle_7322_p_errors(dd->rcd[1]->ppd);
2684 }
2685
2686 /*
2687 * Dynamically adjust the rcv int timeout for a context based on incoming
2688 * packet rate.
2689 */
2690 static void adjust_rcv_timeout(struct qib_ctxtdata *rcd, int npkts)
2691 {
2692 struct qib_devdata *dd = rcd->dd;
2693 u32 timeout = dd->cspec->rcvavail_timeout[rcd->ctxt];
2694
2695 /*
2696 * Dynamically adjust idle timeout on chip
2697 * based on number of packets processed.
2698 */
2699 if (npkts < rcv_int_count && timeout > 2)
2700 timeout >>= 1;
2701 else if (npkts >= rcv_int_count && timeout < rcv_int_timeout)
2702 timeout = min(timeout << 1, rcv_int_timeout);
2703 else
2704 return;
2705
2706 dd->cspec->rcvavail_timeout[rcd->ctxt] = timeout;
2707 qib_write_kreg(dd, kr_rcvavailtimeout + rcd->ctxt, timeout);
2708 }
2709
2710 /*
2711 * This is the main interrupt handler.
2712 * It will normally only be used for low frequency interrupts but may
2713 * have to handle all interrupts if INTx is enabled or fewer than normal
2714 * MSIx interrupts were allocated.
2715 * This routine should ignore the interrupt bits for any of the
2716 * dedicated MSIx handlers.
2717 */
2718 static irqreturn_t qib_7322intr(int irq, void *data)
2719 {
2720 struct qib_devdata *dd = data;
2721 irqreturn_t ret;
2722 u64 istat;
2723 u64 ctxtrbits;
2724 u64 rmask;
2725 unsigned i;
2726 u32 npkts;
2727
2728 if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT) {
2729 /*
2730 * This return value is not great, but we do not want the
2731 * interrupt core code to remove our interrupt handler
2732 * because we don't appear to be handling an interrupt
2733 * during a chip reset.
2734 */
2735 ret = IRQ_HANDLED;
2736 goto bail;
2737 }
2738
2739 istat = qib_read_kreg64(dd, kr_intstatus);
2740
2741 if (unlikely(istat == ~0ULL)) {
2742 qib_bad_intrstatus(dd);
2743 qib_dev_err(dd, "Interrupt status all f's, skipping\n");
2744 /* don't know if it was our interrupt or not */
2745 ret = IRQ_NONE;
2746 goto bail;
2747 }
2748
2749 istat &= dd->cspec->main_int_mask;
2750 if (unlikely(!istat)) {
2751 /* already handled, or shared and not us */
2752 ret = IRQ_NONE;
2753 goto bail;
2754 }
2755
2756 qib_stats.sps_ints++;
2757 if (dd->int_counter != (u32) -1)
2758 dd->int_counter++;
2759
2760 /* handle "errors" of various kinds first, device ahead of port */
2761 if (unlikely(istat & (~QIB_I_BITSEXTANT | QIB_I_GPIO |
2762 QIB_I_C_ERROR | INT_MASK_P(Err, 0) |
2763 INT_MASK_P(Err, 1))))
2764 unlikely_7322_intr(dd, istat);
2765
2766 /*
2767 * Clear the interrupt bits we found set, relatively early, so we
2768 * "know" know the chip will have seen this by the time we process
2769 * the queue, and will re-interrupt if necessary. The processor
2770 * itself won't take the interrupt again until we return.
2771 */
2772 qib_write_kreg(dd, kr_intclear, istat);
2773
2774 /*
2775 * Handle kernel receive queues before checking for pio buffers
2776 * available since receives can overflow; piobuf waiters can afford
2777 * a few extra cycles, since they were waiting anyway.
2778 */
2779 ctxtrbits = istat & (QIB_I_RCVAVAIL_MASK | QIB_I_RCVURG_MASK);
2780 if (ctxtrbits) {
2781 rmask = (1ULL << QIB_I_RCVAVAIL_LSB) |
2782 (1ULL << QIB_I_RCVURG_LSB);
2783 for (i = 0; i < dd->first_user_ctxt; i++) {
2784 if (ctxtrbits & rmask) {
2785 ctxtrbits &= ~rmask;
2786 if (dd->rcd[i]) {
2787 qib_kreceive(dd->rcd[i], NULL, &npkts);
2788 adjust_rcv_timeout(dd->rcd[i], npkts);
2789 }
2790 }
2791 rmask <<= 1;
2792 }
2793 if (ctxtrbits) {
2794 ctxtrbits = (ctxtrbits >> QIB_I_RCVAVAIL_LSB) |
2795 (ctxtrbits >> QIB_I_RCVURG_LSB);
2796 qib_handle_urcv(dd, ctxtrbits);
2797 }
2798 }
2799
2800 if (istat & (QIB_I_P_SDMAINT(0) | QIB_I_P_SDMAINT(1)))
2801 sdma_7322_intr(dd, istat);
2802
2803 if ((istat & QIB_I_SPIOBUFAVAIL) && (dd->flags & QIB_INITTED))
2804 qib_ib_piobufavail(dd);
2805
2806 ret = IRQ_HANDLED;
2807 bail:
2808 return ret;
2809 }
2810
2811 /*
2812 * Dedicated receive packet available interrupt handler.
2813 */
2814 static irqreturn_t qib_7322pintr(int irq, void *data)
2815 {
2816 struct qib_ctxtdata *rcd = data;
2817 struct qib_devdata *dd = rcd->dd;
2818 u32 npkts;
2819
2820 if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT)
2821 /*
2822 * This return value is not great, but we do not want the
2823 * interrupt core code to remove our interrupt handler
2824 * because we don't appear to be handling an interrupt
2825 * during a chip reset.
2826 */
2827 return IRQ_HANDLED;
2828
2829 qib_stats.sps_ints++;
2830 if (dd->int_counter != (u32) -1)
2831 dd->int_counter++;
2832
2833 /* Clear the interrupt bit we expect to be set. */
2834 qib_write_kreg(dd, kr_intclear, ((1ULL << QIB_I_RCVAVAIL_LSB) |
2835 (1ULL << QIB_I_RCVURG_LSB)) << rcd->ctxt);
2836
2837 qib_kreceive(rcd, NULL, &npkts);
2838 adjust_rcv_timeout(rcd, npkts);
2839
2840 return IRQ_HANDLED;
2841 }
2842
2843 /*
2844 * Dedicated Send buffer available interrupt handler.
2845 */
2846 static irqreturn_t qib_7322bufavail(int irq, void *data)
2847 {
2848 struct qib_devdata *dd = data;
2849
2850 if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT)
2851 /*
2852 * This return value is not great, but we do not want the
2853 * interrupt core code to remove our interrupt handler
2854 * because we don't appear to be handling an interrupt
2855 * during a chip reset.
2856 */
2857 return IRQ_HANDLED;
2858
2859 qib_stats.sps_ints++;
2860 if (dd->int_counter != (u32) -1)
2861 dd->int_counter++;
2862
2863 /* Clear the interrupt bit we expect to be set. */
2864 qib_write_kreg(dd, kr_intclear, QIB_I_SPIOBUFAVAIL);
2865
2866 /* qib_ib_piobufavail() will clear the want PIO interrupt if needed */
2867 if (dd->flags & QIB_INITTED)
2868 qib_ib_piobufavail(dd);
2869 else
2870 qib_wantpiobuf_7322_intr(dd, 0);
2871
2872 return IRQ_HANDLED;
2873 }
2874
2875 /*
2876 * Dedicated Send DMA interrupt handler.
2877 */
2878 static irqreturn_t sdma_intr(int irq, void *data)
2879 {
2880 struct qib_pportdata *ppd = data;
2881 struct qib_devdata *dd = ppd->dd;
2882
2883 if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT)
2884 /*
2885 * This return value is not great, but we do not want the
2886 * interrupt core code to remove our interrupt handler
2887 * because we don't appear to be handling an interrupt
2888 * during a chip reset.
2889 */
2890 return IRQ_HANDLED;
2891
2892 qib_stats.sps_ints++;
2893 if (dd->int_counter != (u32) -1)
2894 dd->int_counter++;
2895
2896 /* Clear the interrupt bit we expect to be set. */
2897 qib_write_kreg(dd, kr_intclear, ppd->hw_pidx ?
2898 INT_MASK_P(SDma, 1) : INT_MASK_P(SDma, 0));
2899 qib_sdma_intr(ppd);
2900
2901 return IRQ_HANDLED;
2902 }
2903
2904 /*
2905 * Dedicated Send DMA idle interrupt handler.
2906 */
2907 static irqreturn_t sdma_idle_intr(int irq, void *data)
2908 {
2909 struct qib_pportdata *ppd = data;
2910 struct qib_devdata *dd = ppd->dd;
2911
2912 if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT)
2913 /*
2914 * This return value is not great, but we do not want the
2915 * interrupt core code to remove our interrupt handler
2916 * because we don't appear to be handling an interrupt
2917 * during a chip reset.
2918 */
2919 return IRQ_HANDLED;
2920
2921 qib_stats.sps_ints++;
2922 if (dd->int_counter != (u32) -1)
2923 dd->int_counter++;
2924
2925 /* Clear the interrupt bit we expect to be set. */
2926 qib_write_kreg(dd, kr_intclear, ppd->hw_pidx ?
2927 INT_MASK_P(SDmaIdle, 1) : INT_MASK_P(SDmaIdle, 0));
2928 qib_sdma_intr(ppd);
2929
2930 return IRQ_HANDLED;
2931 }
2932
2933 /*
2934 * Dedicated Send DMA progress interrupt handler.
2935 */
2936 static irqreturn_t sdma_progress_intr(int irq, void *data)
2937 {
2938 struct qib_pportdata *ppd = data;
2939 struct qib_devdata *dd = ppd->dd;
2940
2941 if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT)
2942 /*
2943 * This return value is not great, but we do not want the
2944 * interrupt core code to remove our interrupt handler
2945 * because we don't appear to be handling an interrupt
2946 * during a chip reset.
2947 */
2948 return IRQ_HANDLED;
2949
2950 qib_stats.sps_ints++;
2951 if (dd->int_counter != (u32) -1)
2952 dd->int_counter++;
2953
2954 /* Clear the interrupt bit we expect to be set. */
2955 qib_write_kreg(dd, kr_intclear, ppd->hw_pidx ?
2956 INT_MASK_P(SDmaProgress, 1) :
2957 INT_MASK_P(SDmaProgress, 0));
2958 qib_sdma_intr(ppd);
2959
2960 return IRQ_HANDLED;
2961 }
2962
2963 /*
2964 * Dedicated Send DMA cleanup interrupt handler.
2965 */
2966 static irqreturn_t sdma_cleanup_intr(int irq, void *data)
2967 {
2968 struct qib_pportdata *ppd = data;
2969 struct qib_devdata *dd = ppd->dd;
2970
2971 if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT)
2972 /*
2973 * This return value is not great, but we do not want the
2974 * interrupt core code to remove our interrupt handler
2975 * because we don't appear to be handling an interrupt
2976 * during a chip reset.
2977 */
2978 return IRQ_HANDLED;
2979
2980 qib_stats.sps_ints++;
2981 if (dd->int_counter != (u32) -1)
2982 dd->int_counter++;
2983
2984 /* Clear the interrupt bit we expect to be set. */
2985 qib_write_kreg(dd, kr_intclear, ppd->hw_pidx ?
2986 INT_MASK_PM(SDmaCleanupDone, 1) :
2987 INT_MASK_PM(SDmaCleanupDone, 0));
2988 qib_sdma_process_event(ppd, qib_sdma_event_e20_hw_started);
2989
2990 return IRQ_HANDLED;
2991 }
2992
2993 /*
2994 * Set up our chip-specific interrupt handler.
2995 * The interrupt type has already been setup, so
2996 * we just need to do the registration and error checking.
2997 * If we are using MSIx interrupts, we may fall back to
2998 * INTx later, if the interrupt handler doesn't get called
2999 * within 1/2 second (see verify_interrupt()).
3000 */
3001 static void qib_setup_7322_interrupt(struct qib_devdata *dd, int clearpend)
3002 {
3003 int ret, i, msixnum;
3004 u64 redirect[6];
3005 u64 mask;
3006
3007 if (!dd->num_pports)
3008 return;
3009
3010 if (clearpend) {
3011 /*
3012 * if not switching interrupt types, be sure interrupts are
3013 * disabled, and then clear anything pending at this point,
3014 * because we are starting clean.
3015 */
3016 qib_7322_set_intr_state(dd, 0);
3017
3018 /* clear the reset error, init error/hwerror mask */
3019 qib_7322_init_hwerrors(dd);
3020
3021 /* clear any interrupt bits that might be set */
3022 qib_write_kreg(dd, kr_intclear, ~0ULL);
3023
3024 /* make sure no pending MSIx intr, and clear diag reg */
3025 qib_write_kreg(dd, kr_intgranted, ~0ULL);
3026 qib_write_kreg(dd, kr_vecclr_wo_int, ~0ULL);
3027 }
3028
3029 if (!dd->cspec->num_msix_entries) {
3030 /* Try to get INTx interrupt */
3031 try_intx:
3032 if (!dd->pcidev->irq) {
3033 qib_dev_err(dd, "irq is 0, BIOS error? "
3034 "Interrupts won't work\n");
3035 goto bail;
3036 }
3037 ret = request_irq(dd->pcidev->irq, qib_7322intr,
3038 IRQF_SHARED, QIB_DRV_NAME, dd);
3039 if (ret) {
3040 qib_dev_err(dd, "Couldn't setup INTx "
3041 "interrupt (irq=%d): %d\n",
3042 dd->pcidev->irq, ret);
3043 goto bail;
3044 }
3045 dd->cspec->irq = dd->pcidev->irq;
3046 dd->cspec->main_int_mask = ~0ULL;
3047 goto bail;
3048 }
3049
3050 /* Try to get MSIx interrupts */
3051 memset(redirect, 0, sizeof redirect);
3052 mask = ~0ULL;
3053 msixnum = 0;
3054 for (i = 0; msixnum < dd->cspec->num_msix_entries; i++) {
3055 irq_handler_t handler;
3056 const char *name;
3057 void *arg;
3058 u64 val;
3059 int lsb, reg, sh;
3060
3061 if (i < ARRAY_SIZE(irq_table)) {
3062 if (irq_table[i].port) {
3063 /* skip if for a non-configured port */
3064 if (irq_table[i].port > dd->num_pports)
3065 continue;
3066 arg = dd->pport + irq_table[i].port - 1;
3067 } else
3068 arg = dd;
3069 lsb = irq_table[i].lsb;
3070 handler = irq_table[i].handler;
3071 name = irq_table[i].name;
3072 } else {
3073 unsigned ctxt;
3074
3075 ctxt = i - ARRAY_SIZE(irq_table);
3076 /* per krcvq context receive interrupt */
3077 arg = dd->rcd[ctxt];
3078 if (!arg)
3079 continue;
3080 lsb = QIB_I_RCVAVAIL_LSB + ctxt;
3081 handler = qib_7322pintr;
3082 name = QIB_DRV_NAME " (kctx)";
3083 }
3084 ret = request_irq(dd->cspec->msix_entries[msixnum].vector,
3085 handler, 0, name, arg);
3086 if (ret) {
3087 /*
3088 * Shouldn't happen since the enable said we could
3089 * have as many as we are trying to setup here.
3090 */
3091 qib_dev_err(dd, "Couldn't setup MSIx "
3092 "interrupt (vec=%d, irq=%d): %d\n", msixnum,
3093 dd->cspec->msix_entries[msixnum].vector,
3094 ret);
3095 qib_7322_nomsix(dd);
3096 goto try_intx;
3097 }
3098 dd->cspec->msix_arg[msixnum] = arg;
3099 if (lsb >= 0) {
3100 reg = lsb / IBA7322_REDIRECT_VEC_PER_REG;
3101 sh = (lsb % IBA7322_REDIRECT_VEC_PER_REG) *
3102 SYM_LSB(IntRedirect0, vec1);
3103 mask &= ~(1ULL << lsb);
3104 redirect[reg] |= ((u64) msixnum) << sh;
3105 }
3106 val = qib_read_kreg64(dd, 2 * msixnum + 1 +
3107 (QIB_7322_MsixTable_OFFS / sizeof(u64)));
3108 msixnum++;
3109 }
3110 /* Initialize the vector mapping */
3111 for (i = 0; i < ARRAY_SIZE(redirect); i++)
3112 qib_write_kreg(dd, kr_intredirect + i, redirect[i]);
3113 dd->cspec->main_int_mask = mask;
3114 bail:;
3115 }
3116
3117 /**
3118 * qib_7322_boardname - fill in the board name and note features
3119 * @dd: the qlogic_ib device
3120 *
3121 * info will be based on the board revision register
3122 */
3123 static unsigned qib_7322_boardname(struct qib_devdata *dd)
3124 {
3125 /* Will need enumeration of board-types here */
3126 char *n;
3127 u32 boardid, namelen;
3128 unsigned features = DUAL_PORT_CAP;
3129
3130 boardid = SYM_FIELD(dd->revision, Revision, BoardID);
3131
3132 switch (boardid) {
3133 case 0:
3134 n = "InfiniPath_QLE7342_Emulation";
3135 break;
3136 case 1:
3137 n = "InfiniPath_QLE7340";
3138 dd->flags |= QIB_HAS_QSFP;
3139 features = PORT_SPD_CAP;
3140 break;
3141 case 2:
3142 n = "InfiniPath_QLE7342";
3143 dd->flags |= QIB_HAS_QSFP;
3144 break;
3145 case 3:
3146 n = "InfiniPath_QMI7342";
3147 break;
3148 case 4:
3149 n = "InfiniPath_Unsupported7342";
3150 qib_dev_err(dd, "Unsupported version of QMH7342\n");
3151 features = 0;
3152 break;
3153 case BOARD_QMH7342:
3154 n = "InfiniPath_QMH7342";
3155 features = 0x24;
3156 break;
3157 case BOARD_QME7342:
3158 n = "InfiniPath_QME7342";
3159 break;
3160 case 15:
3161 n = "InfiniPath_QLE7342_TEST";
3162 dd->flags |= QIB_HAS_QSFP;
3163 break;
3164 default:
3165 n = "InfiniPath_QLE73xy_UNKNOWN";
3166 qib_dev_err(dd, "Unknown 7322 board type %u\n", boardid);
3167 break;
3168 }
3169 dd->board_atten = 1; /* index into txdds_Xdr */
3170
3171 namelen = strlen(n) + 1;
3172 dd->boardname = kmalloc(namelen, GFP_KERNEL);
3173 if (!dd->boardname)
3174 qib_dev_err(dd, "Failed allocation for board name: %s\n", n);
3175 else
3176 snprintf(dd->boardname, namelen, "%s", n);
3177
3178 snprintf(dd->boardversion, sizeof(dd->boardversion),
3179 "ChipABI %u.%u, %s, InfiniPath%u %u.%u, SW Compat %u\n",
3180 QIB_CHIP_VERS_MAJ, QIB_CHIP_VERS_MIN, dd->boardname,
3181 (unsigned)SYM_FIELD(dd->revision, Revision_R, Arch),
3182 dd->majrev, dd->minrev,
3183 (unsigned)SYM_FIELD(dd->revision, Revision_R, SW));
3184
3185 if (qib_singleport && (features >> PORT_SPD_CAP_SHIFT) & PORT_SPD_CAP) {
3186 qib_devinfo(dd->pcidev, "IB%u: Forced to single port mode"
3187 " by module parameter\n", dd->unit);
3188 features &= PORT_SPD_CAP;
3189 }
3190
3191 return features;
3192 }
3193
3194 /*
3195 * This routine sleeps, so it can only be called from user context, not
3196 * from interrupt context.
3197 */
3198 static int qib_do_7322_reset(struct qib_devdata *dd)
3199 {
3200 u64 val;
3201 u64 *msix_vecsave;
3202 int i, msix_entries, ret = 1;
3203 u16 cmdval;
3204 u8 int_line, clinesz;
3205 unsigned long flags;
3206
3207 /* Use dev_err so it shows up in logs, etc. */
3208 qib_dev_err(dd, "Resetting InfiniPath unit %u\n", dd->unit);
3209
3210 qib_pcie_getcmd(dd, &cmdval, &int_line, &clinesz);
3211
3212 msix_entries = dd->cspec->num_msix_entries;
3213
3214 /* no interrupts till re-initted */
3215 qib_7322_set_intr_state(dd, 0);
3216
3217 if (msix_entries) {
3218 qib_7322_nomsix(dd);
3219 /* can be up to 512 bytes, too big for stack */
3220 msix_vecsave = kmalloc(2 * dd->cspec->num_msix_entries *
3221 sizeof(u64), GFP_KERNEL);
3222 if (!msix_vecsave)
3223 qib_dev_err(dd, "No mem to save MSIx data\n");
3224 } else
3225 msix_vecsave = NULL;
3226
3227 /*
3228 * Core PCI (as of 2.6.18) doesn't save or rewrite the full vector
3229 * info that is set up by the BIOS, so we have to save and restore
3230 * it ourselves. There is some risk something could change it,
3231 * after we save it, but since we have disabled the MSIx, it
3232 * shouldn't be touched...
3233 */
3234 for (i = 0; i < msix_entries; i++) {
3235 u64 vecaddr, vecdata;
3236 vecaddr = qib_read_kreg64(dd, 2 * i +
3237 (QIB_7322_MsixTable_OFFS / sizeof(u64)));
3238 vecdata = qib_read_kreg64(dd, 1 + 2 * i +
3239 (QIB_7322_MsixTable_OFFS / sizeof(u64)));
3240 if (msix_vecsave) {
3241 msix_vecsave[2 * i] = vecaddr;
3242 /* save it without the masked bit set */
3243 msix_vecsave[1 + 2 * i] = vecdata & ~0x100000000ULL;
3244 }
3245 }
3246
3247 dd->pport->cpspec->ibdeltainprog = 0;
3248 dd->pport->cpspec->ibsymdelta = 0;
3249 dd->pport->cpspec->iblnkerrdelta = 0;
3250 dd->pport->cpspec->ibmalfdelta = 0;
3251 dd->int_counter = 0; /* so we check interrupts work again */
3252
3253 /*
3254 * Keep chip from being accessed until we are ready. Use
3255 * writeq() directly, to allow the write even though QIB_PRESENT
3256 * isnt' set.
3257 */
3258 dd->flags &= ~(QIB_INITTED | QIB_PRESENT | QIB_BADINTR);
3259 dd->flags |= QIB_DOING_RESET;
3260 val = dd->control | QLOGIC_IB_C_RESET;
3261 writeq(val, &dd->kregbase[kr_control]);
3262
3263 for (i = 1; i <= 5; i++) {
3264 /*
3265 * Allow MBIST, etc. to complete; longer on each retry.
3266 * We sometimes get machine checks from bus timeout if no
3267 * response, so for now, make it *really* long.
3268 */
3269 msleep(1000 + (1 + i) * 3000);
3270
3271 qib_pcie_reenable(dd, cmdval, int_line, clinesz);
3272
3273 /*
3274 * Use readq directly, so we don't need to mark it as PRESENT
3275 * until we get a successful indication that all is well.
3276 */
3277 val = readq(&dd->kregbase[kr_revision]);
3278 if (val == dd->revision)
3279 break;
3280 if (i == 5) {
3281 qib_dev_err(dd, "Failed to initialize after reset, "
3282 "unusable\n");
3283 ret = 0;
3284 goto bail;
3285 }
3286 }
3287
3288 dd->flags |= QIB_PRESENT; /* it's back */
3289
3290 if (msix_entries) {
3291 /* restore the MSIx vector address and data if saved above */
3292 for (i = 0; i < msix_entries; i++) {
3293 dd->cspec->msix_entries[i].entry = i;
3294 if (!msix_vecsave || !msix_vecsave[2 * i])
3295 continue;
3296 qib_write_kreg(dd, 2 * i +
3297 (QIB_7322_MsixTable_OFFS / sizeof(u64)),
3298 msix_vecsave[2 * i]);
3299 qib_write_kreg(dd, 1 + 2 * i +
3300 (QIB_7322_MsixTable_OFFS / sizeof(u64)),
3301 msix_vecsave[1 + 2 * i]);
3302 }
3303 }
3304
3305 /* initialize the remaining registers. */
3306 for (i = 0; i < dd->num_pports; ++i)
3307 write_7322_init_portregs(&dd->pport[i]);
3308 write_7322_initregs(dd);
3309
3310 if (qib_pcie_params(dd, dd->lbus_width,
3311 &dd->cspec->num_msix_entries,
3312 dd->cspec->msix_entries))
3313 qib_dev_err(dd, "Reset failed to setup PCIe or interrupts; "
3314 "continuing anyway\n");
3315
3316 qib_setup_7322_interrupt(dd, 1);
3317
3318 for (i = 0; i < dd->num_pports; ++i) {
3319 struct qib_pportdata *ppd = &dd->pport[i];
3320
3321 spin_lock_irqsave(&ppd->lflags_lock, flags);
3322 ppd->lflags |= QIBL_IB_FORCE_NOTIFY;
3323 ppd->lflags &= ~QIBL_IB_AUTONEG_FAILED;
3324 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
3325 }
3326
3327 bail:
3328 dd->flags &= ~QIB_DOING_RESET; /* OK or not, no longer resetting */
3329 kfree(msix_vecsave);
3330 return ret;
3331 }
3332
3333 /**
3334 * qib_7322_put_tid - write a TID to the chip
3335 * @dd: the qlogic_ib device
3336 * @tidptr: pointer to the expected TID (in chip) to update
3337 * @tidtype: 0 for eager, 1 for expected
3338 * @pa: physical address of in memory buffer; tidinvalid if freeing
3339 */
3340 static void qib_7322_put_tid(struct qib_devdata *dd, u64 __iomem *tidptr,
3341 u32 type, unsigned long pa)
3342 {
3343 if (!(dd->flags & QIB_PRESENT))
3344 return;
3345 if (pa != dd->tidinvalid) {
3346 u64 chippa = pa >> IBA7322_TID_PA_SHIFT;
3347
3348 /* paranoia checks */
3349 if (pa != (chippa << IBA7322_TID_PA_SHIFT)) {
3350 qib_dev_err(dd, "Physaddr %lx not 2KB aligned!\n",
3351 pa);
3352 return;
3353 }
3354 if (chippa >= (1UL << IBA7322_TID_SZ_SHIFT)) {
3355 qib_dev_err(dd, "Physical page address 0x%lx "
3356 "larger than supported\n", pa);
3357 return;
3358 }
3359
3360 if (type == RCVHQ_RCV_TYPE_EAGER)
3361 chippa |= dd->tidtemplate;
3362 else /* for now, always full 4KB page */
3363 chippa |= IBA7322_TID_SZ_4K;
3364 pa = chippa;
3365 }
3366 writeq(pa, tidptr);
3367 mmiowb();
3368 }
3369
3370 /**
3371 * qib_7322_clear_tids - clear all TID entries for a ctxt, expected and eager
3372 * @dd: the qlogic_ib device
3373 * @ctxt: the ctxt
3374 *
3375 * clear all TID entries for a ctxt, expected and eager.
3376 * Used from qib_close().
3377 */
3378 static void qib_7322_clear_tids(struct qib_devdata *dd,
3379 struct qib_ctxtdata *rcd)
3380 {
3381 u64 __iomem *tidbase;
3382 unsigned long tidinv;
3383 u32 ctxt;
3384 int i;
3385
3386 if (!dd->kregbase || !rcd)
3387 return;
3388
3389 ctxt = rcd->ctxt;
3390
3391 tidinv = dd->tidinvalid;
3392 tidbase = (u64 __iomem *)
3393 ((char __iomem *) dd->kregbase +
3394 dd->rcvtidbase +
3395 ctxt * dd->rcvtidcnt * sizeof(*tidbase));
3396
3397 for (i = 0; i < dd->rcvtidcnt; i++)
3398 qib_7322_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EXPECTED,
3399 tidinv);
3400
3401 tidbase = (u64 __iomem *)
3402 ((char __iomem *) dd->kregbase +
3403 dd->rcvegrbase +
3404 rcd->rcvegr_tid_base * sizeof(*tidbase));
3405
3406 for (i = 0; i < rcd->rcvegrcnt; i++)
3407 qib_7322_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EAGER,
3408 tidinv);
3409 }
3410
3411 /**
3412 * qib_7322_tidtemplate - setup constants for TID updates
3413 * @dd: the qlogic_ib device
3414 *
3415 * We setup stuff that we use a lot, to avoid calculating each time
3416 */
3417 static void qib_7322_tidtemplate(struct qib_devdata *dd)
3418 {
3419 /*
3420 * For now, we always allocate 4KB buffers (at init) so we can
3421 * receive max size packets. We may want a module parameter to
3422 * specify 2KB or 4KB and/or make it per port instead of per device
3423 * for those who want to reduce memory footprint. Note that the
3424 * rcvhdrentsize size must be large enough to hold the largest
3425 * IB header (currently 96 bytes) that we expect to handle (plus of
3426 * course the 2 dwords of RHF).
3427 */
3428 if (dd->rcvegrbufsize == 2048)
3429 dd->tidtemplate = IBA7322_TID_SZ_2K;
3430 else if (dd->rcvegrbufsize == 4096)
3431 dd->tidtemplate = IBA7322_TID_SZ_4K;
3432 dd->tidinvalid = 0;
3433 }
3434
3435 /**
3436 * qib_init_7322_get_base_info - set chip-specific flags for user code
3437 * @rcd: the qlogic_ib ctxt
3438 * @kbase: qib_base_info pointer
3439 *
3440 * We set the PCIE flag because the lower bandwidth on PCIe vs
3441 * HyperTransport can affect some user packet algorithims.
3442 */
3443
3444 static int qib_7322_get_base_info(struct qib_ctxtdata *rcd,
3445 struct qib_base_info *kinfo)
3446 {
3447 kinfo->spi_runtime_flags |= QIB_RUNTIME_CTXT_MSB_IN_QP |
3448 QIB_RUNTIME_PCIE | QIB_RUNTIME_NODMA_RTAIL |
3449 QIB_RUNTIME_HDRSUPP | QIB_RUNTIME_SDMA;
3450 if (rcd->dd->cspec->r1)
3451 kinfo->spi_runtime_flags |= QIB_RUNTIME_RCHK;
3452 if (rcd->dd->flags & QIB_USE_SPCL_TRIG)
3453 kinfo->spi_runtime_flags |= QIB_RUNTIME_SPECIAL_TRIGGER;
3454
3455 return 0;
3456 }
3457
3458 static struct qib_message_header *
3459 qib_7322_get_msgheader(struct qib_devdata *dd, __le32 *rhf_addr)
3460 {
3461 u32 offset = qib_hdrget_offset(rhf_addr);
3462
3463 return (struct qib_message_header *)
3464 (rhf_addr - dd->rhf_offset + offset);
3465 }
3466
3467 /*
3468 * Configure number of contexts.
3469 */
3470 static void qib_7322_config_ctxts(struct qib_devdata *dd)
3471 {
3472 unsigned long flags;
3473 u32 nchipctxts;
3474
3475 nchipctxts = qib_read_kreg32(dd, kr_contextcnt);
3476 dd->cspec->numctxts = nchipctxts;
3477 if (qib_n_krcv_queues > 1 && dd->num_pports) {
3478 /*
3479 * Set the mask for which bits from the QPN are used
3480 * to select a context number.
3481 */
3482 dd->qpn_mask = 0x3f;
3483 dd->first_user_ctxt = NUM_IB_PORTS +
3484 (qib_n_krcv_queues - 1) * dd->num_pports;
3485 if (dd->first_user_ctxt > nchipctxts)
3486 dd->first_user_ctxt = nchipctxts;
3487 dd->n_krcv_queues = dd->first_user_ctxt / dd->num_pports;
3488 } else {
3489 dd->first_user_ctxt = NUM_IB_PORTS;
3490 dd->n_krcv_queues = 1;
3491 }
3492
3493 if (!qib_cfgctxts) {
3494 int nctxts = dd->first_user_ctxt + num_online_cpus();
3495
3496 if (nctxts <= 6)
3497 dd->ctxtcnt = 6;
3498 else if (nctxts <= 10)
3499 dd->ctxtcnt = 10;
3500 else if (nctxts <= nchipctxts)
3501 dd->ctxtcnt = nchipctxts;
3502 } else if (qib_cfgctxts < dd->num_pports)
3503 dd->ctxtcnt = dd->num_pports;
3504 else if (qib_cfgctxts <= nchipctxts)
3505 dd->ctxtcnt = qib_cfgctxts;
3506 if (!dd->ctxtcnt) /* none of the above, set to max */
3507 dd->ctxtcnt = nchipctxts;
3508
3509 /*
3510 * Chip can be configured for 6, 10, or 18 ctxts, and choice
3511 * affects number of eager TIDs per ctxt (1K, 2K, 4K).
3512 * Lock to be paranoid about later motion, etc.
3513 */
3514 spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags);
3515 if (dd->ctxtcnt > 10)
3516 dd->rcvctrl |= 2ULL << SYM_LSB(RcvCtrl, ContextCfg);
3517 else if (dd->ctxtcnt > 6)
3518 dd->rcvctrl |= 1ULL << SYM_LSB(RcvCtrl, ContextCfg);
3519 /* else configure for default 6 receive ctxts */
3520
3521 /* The XRC opcode is 5. */
3522 dd->rcvctrl |= 5ULL << SYM_LSB(RcvCtrl, XrcTypeCode);
3523
3524 /*
3525 * RcvCtrl *must* be written here so that the
3526 * chip understands how to change rcvegrcnt below.
3527 */
3528 qib_write_kreg(dd, kr_rcvctrl, dd->rcvctrl);
3529 spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags);
3530
3531 /* kr_rcvegrcnt changes based on the number of contexts enabled */
3532 dd->cspec->rcvegrcnt = qib_read_kreg32(dd, kr_rcvegrcnt);
3533 dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt,
3534 dd->num_pports > 1 ? 1024U : 2048U);
3535 }
3536
3537 static int qib_7322_get_ib_cfg(struct qib_pportdata *ppd, int which)
3538 {
3539
3540 int lsb, ret = 0;
3541 u64 maskr; /* right-justified mask */
3542
3543 switch (which) {
3544
3545 case QIB_IB_CFG_LWID_ENB: /* Get allowed Link-width */
3546 ret = ppd->link_width_enabled;
3547 goto done;
3548
3549 case QIB_IB_CFG_LWID: /* Get currently active Link-width */
3550 ret = ppd->link_width_active;
3551 goto done;
3552
3553 case QIB_IB_CFG_SPD_ENB: /* Get allowed Link speeds */
3554 ret = ppd->link_speed_enabled;
3555 goto done;
3556
3557 case QIB_IB_CFG_SPD: /* Get current Link spd */
3558 ret = ppd->link_speed_active;
3559 goto done;
3560
3561 case QIB_IB_CFG_RXPOL_ENB: /* Get Auto-RX-polarity enable */
3562 lsb = SYM_LSB(IBCCtrlB_0, IB_POLARITY_REV_SUPP);
3563 maskr = SYM_RMASK(IBCCtrlB_0, IB_POLARITY_REV_SUPP);
3564 break;
3565
3566 case QIB_IB_CFG_LREV_ENB: /* Get Auto-Lane-reversal enable */
3567 lsb = SYM_LSB(IBCCtrlB_0, IB_LANE_REV_SUPPORTED);
3568 maskr = SYM_RMASK(IBCCtrlB_0, IB_LANE_REV_SUPPORTED);
3569 break;
3570
3571 case QIB_IB_CFG_LINKLATENCY:
3572 ret = qib_read_kreg_port(ppd, krp_ibcstatus_b) &
3573 SYM_MASK(IBCStatusB_0, LinkRoundTripLatency);
3574 goto done;
3575
3576 case QIB_IB_CFG_OP_VLS:
3577 ret = ppd->vls_operational;
3578 goto done;
3579
3580 case QIB_IB_CFG_VL_HIGH_CAP:
3581 ret = 16;
3582 goto done;
3583
3584 case QIB_IB_CFG_VL_LOW_CAP:
3585 ret = 16;
3586 goto done;
3587
3588 case QIB_IB_CFG_OVERRUN_THRESH: /* IB overrun threshold */
3589 ret = SYM_FIELD(ppd->cpspec->ibcctrl_a, IBCCtrlA_0,
3590 OverrunThreshold);
3591 goto done;
3592
3593 case QIB_IB_CFG_PHYERR_THRESH: /* IB PHY error threshold */
3594 ret = SYM_FIELD(ppd->cpspec->ibcctrl_a, IBCCtrlA_0,
3595 PhyerrThreshold);
3596 goto done;
3597
3598 case QIB_IB_CFG_LINKDEFAULT: /* IB link default (sleep/poll) */
3599 /* will only take effect when the link state changes */
3600 ret = (ppd->cpspec->ibcctrl_a &
3601 SYM_MASK(IBCCtrlA_0, LinkDownDefaultState)) ?
3602 IB_LINKINITCMD_SLEEP : IB_LINKINITCMD_POLL;
3603 goto done;
3604
3605 case QIB_IB_CFG_HRTBT: /* Get Heartbeat off/enable/auto */
3606 lsb = IBA7322_IBC_HRTBT_LSB;
3607 maskr = IBA7322_IBC_HRTBT_RMASK; /* OR of AUTO and ENB */
3608 break;
3609
3610 case QIB_IB_CFG_PMA_TICKS:
3611 /*
3612 * 0x00 = 10x link transfer rate or 4 nsec. for 2.5Gbs
3613 * Since the clock is always 250MHz, the value is 3, 1 or 0.
3614 */
3615 if (ppd->link_speed_active == QIB_IB_QDR)
3616 ret = 3;
3617 else if (ppd->link_speed_active == QIB_IB_DDR)
3618 ret = 1;
3619 else
3620 ret = 0;
3621 goto done;
3622
3623 default:
3624 ret = -EINVAL;
3625 goto done;
3626 }
3627 ret = (int)((ppd->cpspec->ibcctrl_b >> lsb) & maskr);
3628 done:
3629 return ret;
3630 }
3631
3632 /*
3633 * Below again cribbed liberally from older version. Do not lean
3634 * heavily on it.
3635 */
3636 #define IBA7322_IBC_DLIDLMC_SHIFT QIB_7322_IBCCtrlB_0_IB_DLID_LSB
3637 #define IBA7322_IBC_DLIDLMC_MASK (QIB_7322_IBCCtrlB_0_IB_DLID_RMASK \
3638 | (QIB_7322_IBCCtrlB_0_IB_DLID_MASK_RMASK << 16))
3639
3640 static int qib_7322_set_ib_cfg(struct qib_pportdata *ppd, int which, u32 val)
3641 {
3642 struct qib_devdata *dd = ppd->dd;
3643 u64 maskr; /* right-justified mask */
3644 int lsb, ret = 0;
3645 u16 lcmd, licmd;
3646 unsigned long flags;
3647
3648 switch (which) {
3649 case QIB_IB_CFG_LIDLMC:
3650 /*
3651 * Set LID and LMC. Combined to avoid possible hazard
3652 * caller puts LMC in 16MSbits, DLID in 16LSbits of val
3653 */
3654 lsb = IBA7322_IBC_DLIDLMC_SHIFT;
3655 maskr = IBA7322_IBC_DLIDLMC_MASK;
3656 /*
3657 * For header-checking, the SLID in the packet will
3658 * be masked with SendIBSLMCMask, and compared
3659 * with SendIBSLIDAssignMask. Make sure we do not
3660 * set any bits not covered by the mask, or we get
3661 * false-positives.
3662 */
3663 qib_write_kreg_port(ppd, krp_sendslid,
3664 val & (val >> 16) & SendIBSLIDAssignMask);
3665 qib_write_kreg_port(ppd, krp_sendslidmask,
3666 (val >> 16) & SendIBSLMCMask);
3667 break;
3668
3669 case QIB_IB_CFG_LWID_ENB: /* set allowed Link-width */
3670 ppd->link_width_enabled = val;
3671 /* convert IB value to chip register value */
3672 if (val == IB_WIDTH_1X)
3673 val = 0;
3674 else if (val == IB_WIDTH_4X)
3675 val = 1;
3676 else
3677 val = 3;
3678 maskr = SYM_RMASK(IBCCtrlB_0, IB_NUM_CHANNELS);
3679 lsb = SYM_LSB(IBCCtrlB_0, IB_NUM_CHANNELS);
3680 break;
3681
3682 case QIB_IB_CFG_SPD_ENB: /* set allowed Link speeds */
3683 /*
3684 * As with width, only write the actual register if the
3685 * link is currently down, otherwise takes effect on next
3686 * link change. Since setting is being explictly requested
3687 * (via MAD or sysfs), clear autoneg failure status if speed
3688 * autoneg is enabled.
3689 */
3690 ppd->link_speed_enabled = val;
3691 val <<= IBA7322_IBC_SPEED_LSB;
3692 maskr = IBA7322_IBC_SPEED_MASK | IBA7322_IBC_IBTA_1_2_MASK |
3693 IBA7322_IBC_MAX_SPEED_MASK;
3694 if (val & (val - 1)) {
3695 /* Muliple speeds enabled */
3696 val |= IBA7322_IBC_IBTA_1_2_MASK |
3697 IBA7322_IBC_MAX_SPEED_MASK;
3698 spin_lock_irqsave(&ppd->lflags_lock, flags);
3699 ppd->lflags &= ~QIBL_IB_AUTONEG_FAILED;
3700 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
3701 } else if (val & IBA7322_IBC_SPEED_QDR)
3702 val |= IBA7322_IBC_IBTA_1_2_MASK;
3703 /* IBTA 1.2 mode + min/max + speed bits are contiguous */
3704 lsb = SYM_LSB(IBCCtrlB_0, IB_ENHANCED_MODE);
3705 break;
3706
3707 case QIB_IB_CFG_RXPOL_ENB: /* set Auto-RX-polarity enable */
3708 lsb = SYM_LSB(IBCCtrlB_0, IB_POLARITY_REV_SUPP);
3709 maskr = SYM_RMASK(IBCCtrlB_0, IB_POLARITY_REV_SUPP);
3710 break;
3711
3712 case QIB_IB_CFG_LREV_ENB: /* set Auto-Lane-reversal enable */
3713 lsb = SYM_LSB(IBCCtrlB_0, IB_LANE_REV_SUPPORTED);
3714 maskr = SYM_RMASK(IBCCtrlB_0, IB_LANE_REV_SUPPORTED);
3715 break;
3716
3717 case QIB_IB_CFG_OVERRUN_THRESH: /* IB overrun threshold */
3718 maskr = SYM_FIELD(ppd->cpspec->ibcctrl_a, IBCCtrlA_0,
3719 OverrunThreshold);
3720 if (maskr != val) {
3721 ppd->cpspec->ibcctrl_a &=
3722 ~SYM_MASK(IBCCtrlA_0, OverrunThreshold);
3723 ppd->cpspec->ibcctrl_a |= (u64) val <<
3724 SYM_LSB(IBCCtrlA_0, OverrunThreshold);
3725 qib_write_kreg_port(ppd, krp_ibcctrl_a,
3726 ppd->cpspec->ibcctrl_a);
3727 qib_write_kreg(dd, kr_scratch, 0ULL);
3728 }
3729 goto bail;
3730
3731 case QIB_IB_CFG_PHYERR_THRESH: /* IB PHY error threshold */
3732 maskr = SYM_FIELD(ppd->cpspec->ibcctrl_a, IBCCtrlA_0,
3733 PhyerrThreshold);
3734 if (maskr != val) {
3735 ppd->cpspec->ibcctrl_a &=
3736 ~SYM_MASK(IBCCtrlA_0, PhyerrThreshold);
3737 ppd->cpspec->ibcctrl_a |= (u64) val <<
3738 SYM_LSB(IBCCtrlA_0, PhyerrThreshold);
3739 qib_write_kreg_port(ppd, krp_ibcctrl_a,
3740 ppd->cpspec->ibcctrl_a);
3741 qib_write_kreg(dd, kr_scratch, 0ULL);
3742 }
3743 goto bail;
3744
3745 case QIB_IB_CFG_PKEYS: /* update pkeys */
3746 maskr = (u64) ppd->pkeys[0] | ((u64) ppd->pkeys[1] << 16) |
3747 ((u64) ppd->pkeys[2] << 32) |
3748 ((u64) ppd->pkeys[3] << 48);
3749 qib_write_kreg_port(ppd, krp_partitionkey, maskr);
3750 goto bail;
3751
3752 case QIB_IB_CFG_LINKDEFAULT: /* IB link default (sleep/poll) */
3753 /* will only take effect when the link state changes */
3754 if (val == IB_LINKINITCMD_POLL)
3755 ppd->cpspec->ibcctrl_a &=
3756 ~SYM_MASK(IBCCtrlA_0, LinkDownDefaultState);
3757 else /* SLEEP */
3758 ppd->cpspec->ibcctrl_a |=
3759 SYM_MASK(IBCCtrlA_0, LinkDownDefaultState);
3760 qib_write_kreg_port(ppd, krp_ibcctrl_a, ppd->cpspec->ibcctrl_a);
3761 qib_write_kreg(dd, kr_scratch, 0ULL);
3762 goto bail;
3763
3764 case QIB_IB_CFG_MTU: /* update the MTU in IBC */
3765 /*
3766 * Update our housekeeping variables, and set IBC max
3767 * size, same as init code; max IBC is max we allow in
3768 * buffer, less the qword pbc, plus 1 for ICRC, in dwords
3769 * Set even if it's unchanged, print debug message only
3770 * on changes.
3771 */
3772 val = (ppd->ibmaxlen >> 2) + 1;
3773 ppd->cpspec->ibcctrl_a &= ~SYM_MASK(IBCCtrlA_0, MaxPktLen);
3774 ppd->cpspec->ibcctrl_a |= (u64)val <<
3775 SYM_LSB(IBCCtrlA_0, MaxPktLen);
3776 qib_write_kreg_port(ppd, krp_ibcctrl_a,
3777 ppd->cpspec->ibcctrl_a);
3778 qib_write_kreg(dd, kr_scratch, 0ULL);
3779 goto bail;
3780
3781 case QIB_IB_CFG_LSTATE: /* set the IB link state */
3782 switch (val & 0xffff0000) {
3783 case IB_LINKCMD_DOWN:
3784 lcmd = QLOGIC_IB_IBCC_LINKCMD_DOWN;
3785 ppd->cpspec->ibmalfusesnap = 1;
3786 ppd->cpspec->ibmalfsnap = read_7322_creg32_port(ppd,
3787 crp_errlink);
3788 if (!ppd->cpspec->ibdeltainprog &&
3789 qib_compat_ddr_negotiate) {
3790 ppd->cpspec->ibdeltainprog = 1;
3791 ppd->cpspec->ibsymsnap =
3792 read_7322_creg32_port(ppd,
3793 crp_ibsymbolerr);
3794 ppd->cpspec->iblnkerrsnap =
3795 read_7322_creg32_port(ppd,
3796 crp_iblinkerrrecov);
3797 }
3798 break;
3799
3800 case IB_LINKCMD_ARMED:
3801 lcmd = QLOGIC_IB_IBCC_LINKCMD_ARMED;
3802 if (ppd->cpspec->ibmalfusesnap) {
3803 ppd->cpspec->ibmalfusesnap = 0;
3804 ppd->cpspec->ibmalfdelta +=
3805 read_7322_creg32_port(ppd,
3806 crp_errlink) -
3807 ppd->cpspec->ibmalfsnap;
3808 }
3809 break;
3810
3811 case IB_LINKCMD_ACTIVE:
3812 lcmd = QLOGIC_IB_IBCC_LINKCMD_ACTIVE;
3813 break;
3814
3815 default:
3816 ret = -EINVAL;
3817 qib_dev_err(dd, "bad linkcmd req 0x%x\n", val >> 16);
3818 goto bail;
3819 }
3820 switch (val & 0xffff) {
3821 case IB_LINKINITCMD_NOP:
3822 licmd = 0;
3823 break;
3824
3825 case IB_LINKINITCMD_POLL:
3826 licmd = QLOGIC_IB_IBCC_LINKINITCMD_POLL;
3827 break;
3828
3829 case IB_LINKINITCMD_SLEEP:
3830 licmd = QLOGIC_IB_IBCC_LINKINITCMD_SLEEP;
3831 break;
3832
3833 case IB_LINKINITCMD_DISABLE:
3834 licmd = QLOGIC_IB_IBCC_LINKINITCMD_DISABLE;
3835 ppd->cpspec->chase_end = 0;
3836 /*
3837 * stop state chase counter and timer, if running.
3838 * wait forpending timer, but don't clear .data (ppd)!
3839 */
3840 if (ppd->cpspec->chase_timer.expires) {
3841 del_timer_sync(&ppd->cpspec->chase_timer);
3842 ppd->cpspec->chase_timer.expires = 0;
3843 }
3844 break;
3845
3846 default:
3847 ret = -EINVAL;
3848 qib_dev_err(dd, "bad linkinitcmd req 0x%x\n",
3849 val & 0xffff);
3850 goto bail;
3851 }
3852 qib_set_ib_7322_lstate(ppd, lcmd, licmd);
3853 goto bail;
3854
3855 case QIB_IB_CFG_OP_VLS:
3856 if (ppd->vls_operational != val) {
3857 ppd->vls_operational = val;
3858 set_vls(ppd);
3859 }
3860 goto bail;
3861
3862 case QIB_IB_CFG_VL_HIGH_LIMIT:
3863 qib_write_kreg_port(ppd, krp_highprio_limit, val);
3864 goto bail;
3865
3866 case QIB_IB_CFG_HRTBT: /* set Heartbeat off/enable/auto */
3867 if (val > 3) {
3868 ret = -EINVAL;
3869 goto bail;
3870 }
3871 lsb = IBA7322_IBC_HRTBT_LSB;
3872 maskr = IBA7322_IBC_HRTBT_RMASK; /* OR of AUTO and ENB */
3873 break;
3874
3875 case QIB_IB_CFG_PORT:
3876 /* val is the port number of the switch we are connected to. */
3877 if (ppd->dd->cspec->r1) {
3878 cancel_delayed_work(&ppd->cpspec->ipg_work);
3879 ppd->cpspec->ipg_tries = 0;
3880 }
3881 goto bail;
3882
3883 default:
3884 ret = -EINVAL;
3885 goto bail;
3886 }
3887 ppd->cpspec->ibcctrl_b &= ~(maskr << lsb);
3888 ppd->cpspec->ibcctrl_b |= (((u64) val & maskr) << lsb);
3889 qib_write_kreg_port(ppd, krp_ibcctrl_b, ppd->cpspec->ibcctrl_b);
3890 qib_write_kreg(dd, kr_scratch, 0);
3891 bail:
3892 return ret;
3893 }
3894
3895 static int qib_7322_set_loopback(struct qib_pportdata *ppd, const char *what)
3896 {
3897 int ret = 0;
3898 u64 val, ctrlb;
3899
3900 /* only IBC loopback, may add serdes and xgxs loopbacks later */
3901 if (!strncmp(what, "ibc", 3)) {
3902 ppd->cpspec->ibcctrl_a |= SYM_MASK(IBCCtrlA_0,
3903 Loopback);
3904 val = 0; /* disable heart beat, so link will come up */
3905 qib_devinfo(ppd->dd->pcidev, "Enabling IB%u:%u IBC loopback\n",
3906 ppd->dd->unit, ppd->port);
3907 } else if (!strncmp(what, "off", 3)) {
3908 ppd->cpspec->ibcctrl_a &= ~SYM_MASK(IBCCtrlA_0,
3909 Loopback);
3910 /* enable heart beat again */
3911 val = IBA7322_IBC_HRTBT_RMASK << IBA7322_IBC_HRTBT_LSB;
3912 qib_devinfo(ppd->dd->pcidev, "Disabling IB%u:%u IBC loopback "
3913 "(normal)\n", ppd->dd->unit, ppd->port);
3914 } else
3915 ret = -EINVAL;
3916 if (!ret) {
3917 qib_write_kreg_port(ppd, krp_ibcctrl_a,
3918 ppd->cpspec->ibcctrl_a);
3919 ctrlb = ppd->cpspec->ibcctrl_b & ~(IBA7322_IBC_HRTBT_MASK
3920 << IBA7322_IBC_HRTBT_LSB);
3921 ppd->cpspec->ibcctrl_b = ctrlb | val;
3922 qib_write_kreg_port(ppd, krp_ibcctrl_b,
3923 ppd->cpspec->ibcctrl_b);
3924 qib_write_kreg(ppd->dd, kr_scratch, 0);
3925 }
3926 return ret;
3927 }
3928
3929 static void get_vl_weights(struct qib_pportdata *ppd, unsigned regno,
3930 struct ib_vl_weight_elem *vl)
3931 {
3932 unsigned i;
3933
3934 for (i = 0; i < 16; i++, regno++, vl++) {
3935 u32 val = qib_read_kreg_port(ppd, regno);
3936
3937 vl->vl = (val >> SYM_LSB(LowPriority0_0, VirtualLane)) &
3938 SYM_RMASK(LowPriority0_0, VirtualLane);
3939 vl->weight = (val >> SYM_LSB(LowPriority0_0, Weight)) &
3940 SYM_RMASK(LowPriority0_0, Weight);
3941 }
3942 }
3943
3944 static void set_vl_weights(struct qib_pportdata *ppd, unsigned regno,
3945 struct ib_vl_weight_elem *vl)
3946 {
3947 unsigned i;
3948
3949 for (i = 0; i < 16; i++, regno++, vl++) {
3950 u64 val;
3951
3952 val = ((vl->vl & SYM_RMASK(LowPriority0_0, VirtualLane)) <<
3953 SYM_LSB(LowPriority0_0, VirtualLane)) |
3954 ((vl->weight & SYM_RMASK(LowPriority0_0, Weight)) <<
3955 SYM_LSB(LowPriority0_0, Weight));
3956 qib_write_kreg_port(ppd, regno, val);
3957 }
3958 if (!(ppd->p_sendctrl & SYM_MASK(SendCtrl_0, IBVLArbiterEn))) {
3959 struct qib_devdata *dd = ppd->dd;
3960 unsigned long flags;
3961
3962 spin_lock_irqsave(&dd->sendctrl_lock, flags);
3963 ppd->p_sendctrl |= SYM_MASK(SendCtrl_0, IBVLArbiterEn);
3964 qib_write_kreg_port(ppd, krp_sendctrl, ppd->p_sendctrl);
3965 qib_write_kreg(dd, kr_scratch, 0);
3966 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
3967 }
3968 }
3969
3970 static int qib_7322_get_ib_table(struct qib_pportdata *ppd, int which, void *t)
3971 {
3972 switch (which) {
3973 case QIB_IB_TBL_VL_HIGH_ARB:
3974 get_vl_weights(ppd, krp_highprio_0, t);
3975 break;
3976
3977 case QIB_IB_TBL_VL_LOW_ARB:
3978 get_vl_weights(ppd, krp_lowprio_0, t);
3979 break;
3980
3981 default:
3982 return -EINVAL;
3983 }
3984 return 0;
3985 }
3986
3987 static int qib_7322_set_ib_table(struct qib_pportdata *ppd, int which, void *t)
3988 {
3989 switch (which) {
3990 case QIB_IB_TBL_VL_HIGH_ARB:
3991 set_vl_weights(ppd, krp_highprio_0, t);
3992 break;
3993
3994 case QIB_IB_TBL_VL_LOW_ARB:
3995 set_vl_weights(ppd, krp_lowprio_0, t);
3996 break;
3997
3998 default:
3999 return -EINVAL;
4000 }
4001 return 0;
4002 }
4003
4004 static void qib_update_7322_usrhead(struct qib_ctxtdata *rcd, u64 hd,
4005 u32 updegr, u32 egrhd)
4006 {
4007 qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
4008 qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
4009 if (updegr)
4010 qib_write_ureg(rcd->dd, ur_rcvegrindexhead, egrhd, rcd->ctxt);
4011 }
4012
4013 static u32 qib_7322_hdrqempty(struct qib_ctxtdata *rcd)
4014 {
4015 u32 head, tail;
4016
4017 head = qib_read_ureg32(rcd->dd, ur_rcvhdrhead, rcd->ctxt);
4018 if (rcd->rcvhdrtail_kvaddr)
4019 tail = qib_get_rcvhdrtail(rcd);
4020 else
4021 tail = qib_read_ureg32(rcd->dd, ur_rcvhdrtail, rcd->ctxt);
4022 return head == tail;
4023 }
4024
4025 #define RCVCTRL_COMMON_MODS (QIB_RCVCTRL_CTXT_ENB | \
4026 QIB_RCVCTRL_CTXT_DIS | \
4027 QIB_RCVCTRL_TIDFLOW_ENB | \
4028 QIB_RCVCTRL_TIDFLOW_DIS | \
4029 QIB_RCVCTRL_TAILUPD_ENB | \
4030 QIB_RCVCTRL_TAILUPD_DIS | \
4031 QIB_RCVCTRL_INTRAVAIL_ENB | \
4032 QIB_RCVCTRL_INTRAVAIL_DIS | \
4033 QIB_RCVCTRL_BP_ENB | \
4034 QIB_RCVCTRL_BP_DIS)
4035
4036 #define RCVCTRL_PORT_MODS (QIB_RCVCTRL_CTXT_ENB | \
4037 QIB_RCVCTRL_CTXT_DIS | \
4038 QIB_RCVCTRL_PKEY_DIS | \
4039 QIB_RCVCTRL_PKEY_ENB)
4040
4041 /*
4042 * Modify the RCVCTRL register in chip-specific way. This
4043 * is a function because bit positions and (future) register
4044 * location is chip-specifc, but the needed operations are
4045 * generic. <op> is a bit-mask because we often want to
4046 * do multiple modifications.
4047 */
4048 static void rcvctrl_7322_mod(struct qib_pportdata *ppd, unsigned int op,
4049 int ctxt)
4050 {
4051 struct qib_devdata *dd = ppd->dd;
4052 struct qib_ctxtdata *rcd;
4053 u64 mask, val;
4054 unsigned long flags;
4055
4056 spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags);
4057
4058 if (op & QIB_RCVCTRL_TIDFLOW_ENB)
4059 dd->rcvctrl |= SYM_MASK(RcvCtrl, TidFlowEnable);
4060 if (op & QIB_RCVCTRL_TIDFLOW_DIS)
4061 dd->rcvctrl &= ~SYM_MASK(RcvCtrl, TidFlowEnable);
4062 if (op & QIB_RCVCTRL_TAILUPD_ENB)
4063 dd->rcvctrl |= SYM_MASK(RcvCtrl, TailUpd);
4064 if (op & QIB_RCVCTRL_TAILUPD_DIS)
4065 dd->rcvctrl &= ~SYM_MASK(RcvCtrl, TailUpd);
4066 if (op & QIB_RCVCTRL_PKEY_ENB)
4067 ppd->p_rcvctrl &= ~SYM_MASK(RcvCtrl_0, RcvPartitionKeyDisable);
4068 if (op & QIB_RCVCTRL_PKEY_DIS)
4069 ppd->p_rcvctrl |= SYM_MASK(RcvCtrl_0, RcvPartitionKeyDisable);
4070 if (ctxt < 0) {
4071 mask = (1ULL << dd->ctxtcnt) - 1;
4072 rcd = NULL;
4073 } else {
4074 mask = (1ULL << ctxt);
4075 rcd = dd->rcd[ctxt];
4076 }
4077 if ((op & QIB_RCVCTRL_CTXT_ENB) && rcd) {
4078 ppd->p_rcvctrl |=
4079 (mask << SYM_LSB(RcvCtrl_0, ContextEnableKernel));
4080 if (!(dd->flags & QIB_NODMA_RTAIL)) {
4081 op |= QIB_RCVCTRL_TAILUPD_ENB; /* need reg write */
4082 dd->rcvctrl |= SYM_MASK(RcvCtrl, TailUpd);
4083 }
4084 /* Write these registers before the context is enabled. */
4085 qib_write_kreg_ctxt(dd, krc_rcvhdrtailaddr, ctxt,
4086 rcd->rcvhdrqtailaddr_phys);
4087 qib_write_kreg_ctxt(dd, krc_rcvhdraddr, ctxt,
4088 rcd->rcvhdrq_phys);
4089 rcd->seq_cnt = 1;
4090 }
4091 if (op & QIB_RCVCTRL_CTXT_DIS)
4092 ppd->p_rcvctrl &=
4093 ~(mask << SYM_LSB(RcvCtrl_0, ContextEnableKernel));
4094 if (op & QIB_RCVCTRL_BP_ENB)
4095 dd->rcvctrl |= mask << SYM_LSB(RcvCtrl, dontDropRHQFull);
4096 if (op & QIB_RCVCTRL_BP_DIS)
4097 dd->rcvctrl &= ~(mask << SYM_LSB(RcvCtrl, dontDropRHQFull));
4098 if (op & QIB_RCVCTRL_INTRAVAIL_ENB)
4099 dd->rcvctrl |= (mask << SYM_LSB(RcvCtrl, IntrAvail));
4100 if (op & QIB_RCVCTRL_INTRAVAIL_DIS)
4101 dd->rcvctrl &= ~(mask << SYM_LSB(RcvCtrl, IntrAvail));
4102 /*
4103 * Decide which registers to write depending on the ops enabled.
4104 * Special case is "flush" (no bits set at all)
4105 * which needs to write both.
4106 */
4107 if (op == 0 || (op & RCVCTRL_COMMON_MODS))
4108 qib_write_kreg(dd, kr_rcvctrl, dd->rcvctrl);
4109 if (op == 0 || (op & RCVCTRL_PORT_MODS))
4110 qib_write_kreg_port(ppd, krp_rcvctrl, ppd->p_rcvctrl);
4111 if ((op & QIB_RCVCTRL_CTXT_ENB) && dd->rcd[ctxt]) {
4112 /*
4113 * Init the context registers also; if we were
4114 * disabled, tail and head should both be zero
4115 * already from the enable, but since we don't
4116 * know, we have to do it explictly.
4117 */
4118 val = qib_read_ureg32(dd, ur_rcvegrindextail, ctxt);
4119 qib_write_ureg(dd, ur_rcvegrindexhead, val, ctxt);
4120
4121 /* be sure enabling write seen; hd/tl should be 0 */
4122 (void) qib_read_kreg32(dd, kr_scratch);
4123 val = qib_read_ureg32(dd, ur_rcvhdrtail, ctxt);
4124 dd->rcd[ctxt]->head = val;
4125 /* If kctxt, interrupt on next receive. */
4126 if (ctxt < dd->first_user_ctxt)
4127 val |= dd->rhdrhead_intr_off;
4128 qib_write_ureg(dd, ur_rcvhdrhead, val, ctxt);
4129 } else if ((op & QIB_RCVCTRL_INTRAVAIL_ENB) &&
4130 dd->rcd[ctxt] && dd->rhdrhead_intr_off) {
4131 /* arm rcv interrupt */
4132 val = dd->rcd[ctxt]->head | dd->rhdrhead_intr_off;
4133 qib_write_ureg(dd, ur_rcvhdrhead, val, ctxt);
4134 }
4135 if (op & QIB_RCVCTRL_CTXT_DIS) {
4136 unsigned f;
4137
4138 /* Now that the context is disabled, clear these registers. */
4139 if (ctxt >= 0) {
4140 qib_write_kreg_ctxt(dd, krc_rcvhdrtailaddr, ctxt, 0);
4141 qib_write_kreg_ctxt(dd, krc_rcvhdraddr, ctxt, 0);
4142 for (f = 0; f < NUM_TIDFLOWS_CTXT; f++)
4143 qib_write_ureg(dd, ur_rcvflowtable + f,
4144 TIDFLOW_ERRBITS, ctxt);
4145 } else {
4146 unsigned i;
4147
4148 for (i = 0; i < dd->cfgctxts; i++) {
4149 qib_write_kreg_ctxt(dd, krc_rcvhdrtailaddr,
4150 i, 0);
4151 qib_write_kreg_ctxt(dd, krc_rcvhdraddr, i, 0);
4152 for (f = 0; f < NUM_TIDFLOWS_CTXT; f++)
4153 qib_write_ureg(dd, ur_rcvflowtable + f,
4154 TIDFLOW_ERRBITS, i);
4155 }
4156 }
4157 }
4158 spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags);
4159 }
4160
4161 /*
4162 * Modify the SENDCTRL register in chip-specific way. This
4163 * is a function where there are multiple such registers with
4164 * slightly different layouts.
4165 * The chip doesn't allow back-to-back sendctrl writes, so write
4166 * the scratch register after writing sendctrl.
4167 *
4168 * Which register is written depends on the operation.
4169 * Most operate on the common register, while
4170 * SEND_ENB and SEND_DIS operate on the per-port ones.
4171 * SEND_ENB is included in common because it can change SPCL_TRIG
4172 */
4173 #define SENDCTRL_COMMON_MODS (\
4174 QIB_SENDCTRL_CLEAR | \
4175 QIB_SENDCTRL_AVAIL_DIS | \
4176 QIB_SENDCTRL_AVAIL_ENB | \
4177 QIB_SENDCTRL_AVAIL_BLIP | \
4178 QIB_SENDCTRL_DISARM | \
4179 QIB_SENDCTRL_DISARM_ALL | \
4180 QIB_SENDCTRL_SEND_ENB)
4181
4182 #define SENDCTRL_PORT_MODS (\
4183 QIB_SENDCTRL_CLEAR | \
4184 QIB_SENDCTRL_SEND_ENB | \
4185 QIB_SENDCTRL_SEND_DIS | \
4186 QIB_SENDCTRL_FLUSH)
4187
4188 static void sendctrl_7322_mod(struct qib_pportdata *ppd, u32 op)
4189 {
4190 struct qib_devdata *dd = ppd->dd;
4191 u64 tmp_dd_sendctrl;
4192 unsigned long flags;
4193
4194 spin_lock_irqsave(&dd->sendctrl_lock, flags);
4195
4196 /* First the dd ones that are "sticky", saved in shadow */
4197 if (op & QIB_SENDCTRL_CLEAR)
4198 dd->sendctrl = 0;
4199 if (op & QIB_SENDCTRL_AVAIL_DIS)
4200 dd->sendctrl &= ~SYM_MASK(SendCtrl, SendBufAvailUpd);
4201 else if (op & QIB_SENDCTRL_AVAIL_ENB) {
4202 dd->sendctrl |= SYM_MASK(SendCtrl, SendBufAvailUpd);
4203 if (dd->flags & QIB_USE_SPCL_TRIG)
4204 dd->sendctrl |= SYM_MASK(SendCtrl, SpecialTriggerEn);
4205 }
4206
4207 /* Then the ppd ones that are "sticky", saved in shadow */
4208 if (op & QIB_SENDCTRL_SEND_DIS)
4209 ppd->p_sendctrl &= ~SYM_MASK(SendCtrl_0, SendEnable);
4210 else if (op & QIB_SENDCTRL_SEND_ENB)
4211 ppd->p_sendctrl |= SYM_MASK(SendCtrl_0, SendEnable);
4212
4213 if (op & QIB_SENDCTRL_DISARM_ALL) {
4214 u32 i, last;
4215
4216 tmp_dd_sendctrl = dd->sendctrl;
4217 last = dd->piobcnt2k + dd->piobcnt4k + NUM_VL15_BUFS;
4218 /*
4219 * Disarm any buffers that are not yet launched,
4220 * disabling updates until done.
4221 */
4222 tmp_dd_sendctrl &= ~SYM_MASK(SendCtrl, SendBufAvailUpd);
4223 for (i = 0; i < last; i++) {
4224 qib_write_kreg(dd, kr_sendctrl,
4225 tmp_dd_sendctrl |
4226 SYM_MASK(SendCtrl, Disarm) | i);
4227 qib_write_kreg(dd, kr_scratch, 0);
4228 }
4229 }
4230
4231 if (op & QIB_SENDCTRL_FLUSH) {
4232 u64 tmp_ppd_sendctrl = ppd->p_sendctrl;
4233
4234 /*
4235 * Now drain all the fifos. The Abort bit should never be
4236 * needed, so for now, at least, we don't use it.
4237 */
4238 tmp_ppd_sendctrl |=
4239 SYM_MASK(SendCtrl_0, TxeDrainRmFifo) |
4240 SYM_MASK(SendCtrl_0, TxeDrainLaFifo) |
4241 SYM_MASK(SendCtrl_0, TxeBypassIbc);
4242 qib_write_kreg_port(ppd, krp_sendctrl, tmp_ppd_sendctrl);
4243 qib_write_kreg(dd, kr_scratch, 0);
4244 }
4245
4246 tmp_dd_sendctrl = dd->sendctrl;
4247
4248 if (op & QIB_SENDCTRL_DISARM)
4249 tmp_dd_sendctrl |= SYM_MASK(SendCtrl, Disarm) |
4250 ((op & QIB_7322_SendCtrl_DisarmSendBuf_RMASK) <<
4251 SYM_LSB(SendCtrl, DisarmSendBuf));
4252 if ((op & QIB_SENDCTRL_AVAIL_BLIP) &&
4253 (dd->sendctrl & SYM_MASK(SendCtrl, SendBufAvailUpd)))
4254 tmp_dd_sendctrl &= ~SYM_MASK(SendCtrl, SendBufAvailUpd);
4255
4256 if (op == 0 || (op & SENDCTRL_COMMON_MODS)) {
4257 qib_write_kreg(dd, kr_sendctrl, tmp_dd_sendctrl);
4258 qib_write_kreg(dd, kr_scratch, 0);
4259 }
4260
4261 if (op == 0 || (op & SENDCTRL_PORT_MODS)) {
4262 qib_write_kreg_port(ppd, krp_sendctrl, ppd->p_sendctrl);
4263 qib_write_kreg(dd, kr_scratch, 0);
4264 }
4265
4266 if (op & QIB_SENDCTRL_AVAIL_BLIP) {
4267 qib_write_kreg(dd, kr_sendctrl, dd->sendctrl);
4268 qib_write_kreg(dd, kr_scratch, 0);
4269 }
4270
4271 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
4272
4273 if (op & QIB_SENDCTRL_FLUSH) {
4274 u32 v;
4275 /*
4276 * ensure writes have hit chip, then do a few
4277 * more reads, to allow DMA of pioavail registers
4278 * to occur, so in-memory copy is in sync with
4279 * the chip. Not always safe to sleep.
4280 */
4281 v = qib_read_kreg32(dd, kr_scratch);
4282 qib_write_kreg(dd, kr_scratch, v);
4283 v = qib_read_kreg32(dd, kr_scratch);
4284 qib_write_kreg(dd, kr_scratch, v);
4285 qib_read_kreg32(dd, kr_scratch);
4286 }
4287 }
4288
4289 #define _PORT_VIRT_FLAG 0x8000U /* "virtual", need adjustments */
4290 #define _PORT_64BIT_FLAG 0x10000U /* not "virtual", but 64bit */
4291 #define _PORT_CNTR_IDXMASK 0x7fffU /* mask off flags above */
4292
4293 /**
4294 * qib_portcntr_7322 - read a per-port chip counter
4295 * @ppd: the qlogic_ib pport
4296 * @creg: the counter to read (not a chip offset)
4297 */
4298 static u64 qib_portcntr_7322(struct qib_pportdata *ppd, u32 reg)
4299 {
4300 struct qib_devdata *dd = ppd->dd;
4301 u64 ret = 0ULL;
4302 u16 creg;
4303 /* 0xffff for unimplemented or synthesized counters */
4304 static const u32 xlator[] = {
4305 [QIBPORTCNTR_PKTSEND] = crp_pktsend | _PORT_64BIT_FLAG,
4306 [QIBPORTCNTR_WORDSEND] = crp_wordsend | _PORT_64BIT_FLAG,
4307 [QIBPORTCNTR_PSXMITDATA] = crp_psxmitdatacount,
4308 [QIBPORTCNTR_PSXMITPKTS] = crp_psxmitpktscount,
4309 [QIBPORTCNTR_PSXMITWAIT] = crp_psxmitwaitcount,
4310 [QIBPORTCNTR_SENDSTALL] = crp_sendstall,
4311 [QIBPORTCNTR_PKTRCV] = crp_pktrcv | _PORT_64BIT_FLAG,
4312 [QIBPORTCNTR_PSRCVDATA] = crp_psrcvdatacount,
4313 [QIBPORTCNTR_PSRCVPKTS] = crp_psrcvpktscount,
4314 [QIBPORTCNTR_RCVEBP] = crp_rcvebp,
4315 [QIBPORTCNTR_RCVOVFL] = crp_rcvovfl,
4316 [QIBPORTCNTR_WORDRCV] = crp_wordrcv | _PORT_64BIT_FLAG,
4317 [QIBPORTCNTR_RXDROPPKT] = 0xffff, /* not needed for 7322 */
4318 [QIBPORTCNTR_RXLOCALPHYERR] = crp_rxotherlocalphyerr,
4319 [QIBPORTCNTR_RXVLERR] = crp_rxvlerr,
4320 [QIBPORTCNTR_ERRICRC] = crp_erricrc,
4321 [QIBPORTCNTR_ERRVCRC] = crp_errvcrc,
4322 [QIBPORTCNTR_ERRLPCRC] = crp_errlpcrc,
4323 [QIBPORTCNTR_BADFORMAT] = crp_badformat,
4324 [QIBPORTCNTR_ERR_RLEN] = crp_err_rlen,
4325 [QIBPORTCNTR_IBSYMBOLERR] = crp_ibsymbolerr,
4326 [QIBPORTCNTR_INVALIDRLEN] = crp_invalidrlen,
4327 [QIBPORTCNTR_UNSUPVL] = crp_txunsupvl,
4328 [QIBPORTCNTR_EXCESSBUFOVFL] = crp_excessbufferovfl,
4329 [QIBPORTCNTR_ERRLINK] = crp_errlink,
4330 [QIBPORTCNTR_IBLINKDOWN] = crp_iblinkdown,
4331 [QIBPORTCNTR_IBLINKERRRECOV] = crp_iblinkerrrecov,
4332 [QIBPORTCNTR_LLI] = crp_locallinkintegrityerr,
4333 [QIBPORTCNTR_VL15PKTDROP] = crp_vl15droppedpkt,
4334 [QIBPORTCNTR_ERRPKEY] = crp_errpkey,
4335 /*
4336 * the next 3 aren't really counters, but were implemented
4337 * as counters in older chips, so still get accessed as
4338 * though they were counters from this code.
4339 */
4340 [QIBPORTCNTR_PSINTERVAL] = krp_psinterval,
4341 [QIBPORTCNTR_PSSTART] = krp_psstart,
4342 [QIBPORTCNTR_PSSTAT] = krp_psstat,
4343 /* pseudo-counter, summed for all ports */
4344 [QIBPORTCNTR_KHDROVFL] = 0xffff,
4345 };
4346
4347 if (reg >= ARRAY_SIZE(xlator)) {
4348 qib_devinfo(ppd->dd->pcidev,
4349 "Unimplemented portcounter %u\n", reg);
4350 goto done;
4351 }
4352 creg = xlator[reg] & _PORT_CNTR_IDXMASK;
4353
4354 /* handle non-counters and special cases first */
4355 if (reg == QIBPORTCNTR_KHDROVFL) {
4356 int i;
4357
4358 /* sum over all kernel contexts (skip if mini_init) */
4359 for (i = 0; dd->rcd && i < dd->first_user_ctxt; i++) {
4360 struct qib_ctxtdata *rcd = dd->rcd[i];
4361
4362 if (!rcd || rcd->ppd != ppd)
4363 continue;
4364 ret += read_7322_creg32(dd, cr_base_egrovfl + i);
4365 }
4366 goto done;
4367 } else if (reg == QIBPORTCNTR_RXDROPPKT) {
4368 /*
4369 * Used as part of the synthesis of port_rcv_errors
4370 * in the verbs code for IBTA counters. Not needed for 7322,
4371 * because all the errors are already counted by other cntrs.
4372 */
4373 goto done;
4374 } else if (reg == QIBPORTCNTR_PSINTERVAL ||
4375 reg == QIBPORTCNTR_PSSTART || reg == QIBPORTCNTR_PSSTAT) {
4376 /* were counters in older chips, now per-port kernel regs */
4377 ret = qib_read_kreg_port(ppd, creg);
4378 goto done;
4379 }
4380
4381 /*
4382 * Only fast increment counters are 64 bits; use 32 bit reads to
4383 * avoid two independent reads when on Opteron.
4384 */
4385 if (xlator[reg] & _PORT_64BIT_FLAG)
4386 ret = read_7322_creg_port(ppd, creg);
4387 else
4388 ret = read_7322_creg32_port(ppd, creg);
4389 if (creg == crp_ibsymbolerr) {
4390 if (ppd->cpspec->ibdeltainprog)
4391 ret -= ret - ppd->cpspec->ibsymsnap;
4392 ret -= ppd->cpspec->ibsymdelta;
4393 } else if (creg == crp_iblinkerrrecov) {
4394 if (ppd->cpspec->ibdeltainprog)
4395 ret -= ret - ppd->cpspec->iblnkerrsnap;
4396 ret -= ppd->cpspec->iblnkerrdelta;
4397 } else if (creg == crp_errlink)
4398 ret -= ppd->cpspec->ibmalfdelta;
4399 else if (creg == crp_iblinkdown)
4400 ret += ppd->cpspec->iblnkdowndelta;
4401 done:
4402 return ret;
4403 }
4404
4405 /*
4406 * Device counter names (not port-specific), one line per stat,
4407 * single string. Used by utilities like ipathstats to print the stats
4408 * in a way which works for different versions of drivers, without changing
4409 * the utility. Names need to be 12 chars or less (w/o newline), for proper
4410 * display by utility.
4411 * Non-error counters are first.
4412 * Start of "error" conters is indicated by a leading "E " on the first
4413 * "error" counter, and doesn't count in label length.
4414 * The EgrOvfl list needs to be last so we truncate them at the configured
4415 * context count for the device.
4416 * cntr7322indices contains the corresponding register indices.
4417 */
4418 static const char cntr7322names[] =
4419 "Interrupts\n"
4420 "HostBusStall\n"
4421 "E RxTIDFull\n"
4422 "RxTIDInvalid\n"
4423 "RxTIDFloDrop\n" /* 7322 only */
4424 "Ctxt0EgrOvfl\n"
4425 "Ctxt1EgrOvfl\n"
4426 "Ctxt2EgrOvfl\n"
4427 "Ctxt3EgrOvfl\n"
4428 "Ctxt4EgrOvfl\n"
4429 "Ctxt5EgrOvfl\n"
4430 "Ctxt6EgrOvfl\n"
4431 "Ctxt7EgrOvfl\n"
4432 "Ctxt8EgrOvfl\n"
4433 "Ctxt9EgrOvfl\n"
4434 "Ctx10EgrOvfl\n"
4435 "Ctx11EgrOvfl\n"
4436 "Ctx12EgrOvfl\n"
4437 "Ctx13EgrOvfl\n"
4438 "Ctx14EgrOvfl\n"
4439 "Ctx15EgrOvfl\n"
4440 "Ctx16EgrOvfl\n"
4441 "Ctx17EgrOvfl\n"
4442 ;
4443
4444 static const u32 cntr7322indices[] = {
4445 cr_lbint | _PORT_64BIT_FLAG,
4446 cr_lbstall | _PORT_64BIT_FLAG,
4447 cr_tidfull,
4448 cr_tidinvalid,
4449 cr_rxtidflowdrop,
4450 cr_base_egrovfl + 0,
4451 cr_base_egrovfl + 1,
4452 cr_base_egrovfl + 2,
4453 cr_base_egrovfl + 3,
4454 cr_base_egrovfl + 4,
4455 cr_base_egrovfl + 5,
4456 cr_base_egrovfl + 6,
4457 cr_base_egrovfl + 7,
4458 cr_base_egrovfl + 8,
4459 cr_base_egrovfl + 9,
4460 cr_base_egrovfl + 10,
4461 cr_base_egrovfl + 11,
4462 cr_base_egrovfl + 12,
4463 cr_base_egrovfl + 13,
4464 cr_base_egrovfl + 14,
4465 cr_base_egrovfl + 15,
4466 cr_base_egrovfl + 16,
4467 cr_base_egrovfl + 17,
4468 };
4469
4470 /*
4471 * same as cntr7322names and cntr7322indices, but for port-specific counters.
4472 * portcntr7322indices is somewhat complicated by some registers needing
4473 * adjustments of various kinds, and those are ORed with _PORT_VIRT_FLAG
4474 */
4475 static const char portcntr7322names[] =
4476 "TxPkt\n"
4477 "TxFlowPkt\n"
4478 "TxWords\n"
4479 "RxPkt\n"
4480 "RxFlowPkt\n"
4481 "RxWords\n"
4482 "TxFlowStall\n"
4483 "TxDmaDesc\n" /* 7220 and 7322-only */
4484 "E RxDlidFltr\n" /* 7220 and 7322-only */
4485 "IBStatusChng\n"
4486 "IBLinkDown\n"
4487 "IBLnkRecov\n"
4488 "IBRxLinkErr\n"
4489 "IBSymbolErr\n"
4490 "RxLLIErr\n"
4491 "RxBadFormat\n"
4492 "RxBadLen\n"
4493 "RxBufOvrfl\n"
4494 "RxEBP\n"
4495 "RxFlowCtlErr\n"
4496 "RxICRCerr\n"
4497 "RxLPCRCerr\n"
4498 "RxVCRCerr\n"
4499 "RxInvalLen\n"
4500 "RxInvalPKey\n"
4501 "RxPktDropped\n"
4502 "TxBadLength\n"
4503 "TxDropped\n"
4504 "TxInvalLen\n"
4505 "TxUnderrun\n"
4506 "TxUnsupVL\n"
4507 "RxLclPhyErr\n" /* 7220 and 7322-only from here down */
4508 "RxVL15Drop\n"
4509 "RxVlErr\n"
4510 "XcessBufOvfl\n"
4511 "RxQPBadCtxt\n" /* 7322-only from here down */
4512 "TXBadHeader\n"
4513 ;
4514
4515 static const u32 portcntr7322indices[] = {
4516 QIBPORTCNTR_PKTSEND | _PORT_VIRT_FLAG,
4517 crp_pktsendflow,
4518 QIBPORTCNTR_WORDSEND | _PORT_VIRT_FLAG,
4519 QIBPORTCNTR_PKTRCV | _PORT_VIRT_FLAG,
4520 crp_pktrcvflowctrl,
4521 QIBPORTCNTR_WORDRCV | _PORT_VIRT_FLAG,
4522 QIBPORTCNTR_SENDSTALL | _PORT_VIRT_FLAG,
4523 crp_txsdmadesc | _PORT_64BIT_FLAG,
4524 crp_rxdlidfltr,
4525 crp_ibstatuschange,
4526 QIBPORTCNTR_IBLINKDOWN | _PORT_VIRT_FLAG,
4527 QIBPORTCNTR_IBLINKERRRECOV | _PORT_VIRT_FLAG,
4528 QIBPORTCNTR_ERRLINK | _PORT_VIRT_FLAG,
4529 QIBPORTCNTR_IBSYMBOLERR | _PORT_VIRT_FLAG,
4530 QIBPORTCNTR_LLI | _PORT_VIRT_FLAG,
4531 QIBPORTCNTR_BADFORMAT | _PORT_VIRT_FLAG,
4532 QIBPORTCNTR_ERR_RLEN | _PORT_VIRT_FLAG,
4533 QIBPORTCNTR_RCVOVFL | _PORT_VIRT_FLAG,
4534 QIBPORTCNTR_RCVEBP | _PORT_VIRT_FLAG,
4535 crp_rcvflowctrlviol,
4536 QIBPORTCNTR_ERRICRC | _PORT_VIRT_FLAG,
4537 QIBPORTCNTR_ERRLPCRC | _PORT_VIRT_FLAG,
4538 QIBPORTCNTR_ERRVCRC | _PORT_VIRT_FLAG,
4539 QIBPORTCNTR_INVALIDRLEN | _PORT_VIRT_FLAG,
4540 QIBPORTCNTR_ERRPKEY | _PORT_VIRT_FLAG,
4541 QIBPORTCNTR_RXDROPPKT | _PORT_VIRT_FLAG,
4542 crp_txminmaxlenerr,
4543 crp_txdroppedpkt,
4544 crp_txlenerr,
4545 crp_txunderrun,
4546 crp_txunsupvl,
4547 QIBPORTCNTR_RXLOCALPHYERR | _PORT_VIRT_FLAG,
4548 QIBPORTCNTR_VL15PKTDROP | _PORT_VIRT_FLAG,
4549 QIBPORTCNTR_RXVLERR | _PORT_VIRT_FLAG,
4550 QIBPORTCNTR_EXCESSBUFOVFL | _PORT_VIRT_FLAG,
4551 crp_rxqpinvalidctxt,
4552 crp_txhdrerr,
4553 };
4554
4555 /* do all the setup to make the counter reads efficient later */
4556 static void init_7322_cntrnames(struct qib_devdata *dd)
4557 {
4558 int i, j = 0;
4559 char *s;
4560
4561 for (i = 0, s = (char *)cntr7322names; s && j <= dd->cfgctxts;
4562 i++) {
4563 /* we always have at least one counter before the egrovfl */
4564 if (!j && !strncmp("Ctxt0EgrOvfl", s + 1, 12))
4565 j = 1;
4566 s = strchr(s + 1, '\n');
4567 if (s && j)
4568 j++;
4569 }
4570 dd->cspec->ncntrs = i;
4571 if (!s)
4572 /* full list; size is without terminating null */
4573 dd->cspec->cntrnamelen = sizeof(cntr7322names) - 1;
4574 else
4575 dd->cspec->cntrnamelen = 1 + s - cntr7322names;
4576 dd->cspec->cntrs = kmalloc(dd->cspec->ncntrs
4577 * sizeof(u64), GFP_KERNEL);
4578 if (!dd->cspec->cntrs)
4579 qib_dev_err(dd, "Failed allocation for counters\n");
4580
4581 for (i = 0, s = (char *)portcntr7322names; s; i++)
4582 s = strchr(s + 1, '\n');
4583 dd->cspec->nportcntrs = i - 1;
4584 dd->cspec->portcntrnamelen = sizeof(portcntr7322names) - 1;
4585 for (i = 0; i < dd->num_pports; ++i) {
4586 dd->pport[i].cpspec->portcntrs = kmalloc(dd->cspec->nportcntrs
4587 * sizeof(u64), GFP_KERNEL);
4588 if (!dd->pport[i].cpspec->portcntrs)
4589 qib_dev_err(dd, "Failed allocation for"
4590 " portcounters\n");
4591 }
4592 }
4593
4594 static u32 qib_read_7322cntrs(struct qib_devdata *dd, loff_t pos, char **namep,
4595 u64 **cntrp)
4596 {
4597 u32 ret;
4598
4599 if (namep) {
4600 ret = dd->cspec->cntrnamelen;
4601 if (pos >= ret)
4602 ret = 0; /* final read after getting everything */
4603 else
4604 *namep = (char *) cntr7322names;
4605 } else {
4606 u64 *cntr = dd->cspec->cntrs;
4607 int i;
4608
4609 ret = dd->cspec->ncntrs * sizeof(u64);
4610 if (!cntr || pos >= ret) {
4611 /* everything read, or couldn't get memory */
4612 ret = 0;
4613 goto done;
4614 }
4615 *cntrp = cntr;
4616 for (i = 0; i < dd->cspec->ncntrs; i++)
4617 if (cntr7322indices[i] & _PORT_64BIT_FLAG)
4618 *cntr++ = read_7322_creg(dd,
4619 cntr7322indices[i] &
4620 _PORT_CNTR_IDXMASK);
4621 else
4622 *cntr++ = read_7322_creg32(dd,
4623 cntr7322indices[i]);
4624 }
4625 done:
4626 return ret;
4627 }
4628
4629 static u32 qib_read_7322portcntrs(struct qib_devdata *dd, loff_t pos, u32 port,
4630 char **namep, u64 **cntrp)
4631 {
4632 u32 ret;
4633
4634 if (namep) {
4635 ret = dd->cspec->portcntrnamelen;
4636 if (pos >= ret)
4637 ret = 0; /* final read after getting everything */
4638 else
4639 *namep = (char *)portcntr7322names;
4640 } else {
4641 struct qib_pportdata *ppd = &dd->pport[port];
4642 u64 *cntr = ppd->cpspec->portcntrs;
4643 int i;
4644
4645 ret = dd->cspec->nportcntrs * sizeof(u64);
4646 if (!cntr || pos >= ret) {
4647 /* everything read, or couldn't get memory */
4648 ret = 0;
4649 goto done;
4650 }
4651 *cntrp = cntr;
4652 for (i = 0; i < dd->cspec->nportcntrs; i++) {
4653 if (portcntr7322indices[i] & _PORT_VIRT_FLAG)
4654 *cntr++ = qib_portcntr_7322(ppd,
4655 portcntr7322indices[i] &
4656 _PORT_CNTR_IDXMASK);
4657 else if (portcntr7322indices[i] & _PORT_64BIT_FLAG)
4658 *cntr++ = read_7322_creg_port(ppd,
4659 portcntr7322indices[i] &
4660 _PORT_CNTR_IDXMASK);
4661 else
4662 *cntr++ = read_7322_creg32_port(ppd,
4663 portcntr7322indices[i]);
4664 }
4665 }
4666 done:
4667 return ret;
4668 }
4669
4670 /**
4671 * qib_get_7322_faststats - get word counters from chip before they overflow
4672 * @opaque - contains a pointer to the qlogic_ib device qib_devdata
4673 *
4674 * VESTIGIAL IBA7322 has no "small fast counters", so the only
4675 * real purpose of this function is to maintain the notion of
4676 * "active time", which in turn is only logged into the eeprom,
4677 * which we don;t have, yet, for 7322-based boards.
4678 *
4679 * called from add_timer
4680 */
4681 static void qib_get_7322_faststats(unsigned long opaque)
4682 {
4683 struct qib_devdata *dd = (struct qib_devdata *) opaque;
4684 struct qib_pportdata *ppd;
4685 unsigned long flags;
4686 u64 traffic_wds;
4687 int pidx;
4688
4689 for (pidx = 0; pidx < dd->num_pports; ++pidx) {
4690 ppd = dd->pport + pidx;
4691
4692 /*
4693 * If port isn't enabled or not operational ports, or
4694 * diags is running (can cause memory diags to fail)
4695 * skip this port this time.
4696 */
4697 if (!ppd->link_speed_supported || !(dd->flags & QIB_INITTED)
4698 || dd->diag_client)
4699 continue;
4700
4701 /*
4702 * Maintain an activity timer, based on traffic
4703 * exceeding a threshold, so we need to check the word-counts
4704 * even if they are 64-bit.
4705 */
4706 traffic_wds = qib_portcntr_7322(ppd, QIBPORTCNTR_WORDRCV) +
4707 qib_portcntr_7322(ppd, QIBPORTCNTR_WORDSEND);
4708 spin_lock_irqsave(&ppd->dd->eep_st_lock, flags);
4709 traffic_wds -= ppd->dd->traffic_wds;
4710 ppd->dd->traffic_wds += traffic_wds;
4711 if (traffic_wds >= QIB_TRAFFIC_ACTIVE_THRESHOLD)
4712 atomic_add(ACTIVITY_TIMER, &ppd->dd->active_time);
4713 spin_unlock_irqrestore(&ppd->dd->eep_st_lock, flags);
4714 if (ppd->cpspec->qdr_dfe_on && (ppd->link_speed_active &
4715 QIB_IB_QDR) &&
4716 (ppd->lflags & (QIBL_LINKINIT | QIBL_LINKARMED |
4717 QIBL_LINKACTIVE)) &&
4718 ppd->cpspec->qdr_dfe_time &&
4719 time_after64(get_jiffies_64(), ppd->cpspec->qdr_dfe_time)) {
4720 ppd->cpspec->qdr_dfe_on = 0;
4721
4722 qib_write_kreg_port(ppd, krp_static_adapt_dis(2),
4723 ppd->dd->cspec->r1 ?
4724 QDR_STATIC_ADAPT_INIT_R1 :
4725 QDR_STATIC_ADAPT_INIT);
4726 force_h1(ppd);
4727 }
4728 }
4729 mod_timer(&dd->stats_timer, jiffies + HZ * ACTIVITY_TIMER);
4730 }
4731
4732 /*
4733 * If we were using MSIx, try to fallback to INTx.
4734 */
4735 static int qib_7322_intr_fallback(struct qib_devdata *dd)
4736 {
4737 if (!dd->cspec->num_msix_entries)
4738 return 0; /* already using INTx */
4739
4740 qib_devinfo(dd->pcidev, "MSIx interrupt not detected,"
4741 " trying INTx interrupts\n");
4742 qib_7322_nomsix(dd);
4743 qib_enable_intx(dd->pcidev);
4744 qib_setup_7322_interrupt(dd, 0);
4745 return 1;
4746 }
4747
4748 /*
4749 * Reset the XGXS (between serdes and IBC). Slightly less intrusive
4750 * than resetting the IBC or external link state, and useful in some
4751 * cases to cause some retraining. To do this right, we reset IBC
4752 * as well, then return to previous state (which may be still in reset)
4753 * NOTE: some callers of this "know" this writes the current value
4754 * of cpspec->ibcctrl_a as part of it's operation, so if that changes,
4755 * check all callers.
4756 */
4757 static void qib_7322_mini_pcs_reset(struct qib_pportdata *ppd)
4758 {
4759 u64 val;
4760 struct qib_devdata *dd = ppd->dd;
4761 const u64 reset_bits = SYM_MASK(IBPCSConfig_0, xcv_rreset) |
4762 SYM_MASK(IBPCSConfig_0, xcv_treset) |
4763 SYM_MASK(IBPCSConfig_0, tx_rx_reset);
4764
4765 val = qib_read_kreg_port(ppd, krp_ib_pcsconfig);
4766 qib_write_kreg(dd, kr_hwerrmask,
4767 dd->cspec->hwerrmask & ~HWE_MASK(statusValidNoEop));
4768 qib_write_kreg_port(ppd, krp_ibcctrl_a,
4769 ppd->cpspec->ibcctrl_a &
4770 ~SYM_MASK(IBCCtrlA_0, IBLinkEn));
4771
4772 qib_write_kreg_port(ppd, krp_ib_pcsconfig, val | reset_bits);
4773 qib_read_kreg32(dd, kr_scratch);
4774 qib_write_kreg_port(ppd, krp_ib_pcsconfig, val & ~reset_bits);
4775 qib_write_kreg_port(ppd, krp_ibcctrl_a, ppd->cpspec->ibcctrl_a);
4776 qib_write_kreg(dd, kr_scratch, 0ULL);
4777 qib_write_kreg(dd, kr_hwerrclear,
4778 SYM_MASK(HwErrClear, statusValidNoEopClear));
4779 qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask);
4780 }
4781
4782 /*
4783 * This code for non-IBTA-compliant IB speed negotiation is only known to
4784 * work for the SDR to DDR transition, and only between an HCA and a switch
4785 * with recent firmware. It is based on observed heuristics, rather than
4786 * actual knowledge of the non-compliant speed negotiation.
4787 * It has a number of hard-coded fields, since the hope is to rewrite this
4788 * when a spec is available on how the negoation is intended to work.
4789 */
4790 static void autoneg_7322_sendpkt(struct qib_pportdata *ppd, u32 *hdr,
4791 u32 dcnt, u32 *data)
4792 {
4793 int i;
4794 u64 pbc;
4795 u32 __iomem *piobuf;
4796 u32 pnum, control, len;
4797 struct qib_devdata *dd = ppd->dd;
4798
4799 i = 0;
4800 len = 7 + dcnt + 1; /* 7 dword header, dword data, icrc */
4801 control = qib_7322_setpbc_control(ppd, len, 0, 15);
4802 pbc = ((u64) control << 32) | len;
4803 while (!(piobuf = qib_7322_getsendbuf(ppd, pbc, &pnum))) {
4804 if (i++ > 15)
4805 return;
4806 udelay(2);
4807 }
4808 /* disable header check on this packet, since it can't be valid */
4809 dd->f_txchk_change(dd, pnum, 1, TXCHK_CHG_TYPE_DIS1, NULL);
4810 writeq(pbc, piobuf);
4811 qib_flush_wc();
4812 qib_pio_copy(piobuf + 2, hdr, 7);
4813 qib_pio_copy(piobuf + 9, data, dcnt);
4814 if (dd->flags & QIB_USE_SPCL_TRIG) {
4815 u32 spcl_off = (pnum >= dd->piobcnt2k) ? 2047 : 1023;
4816
4817 qib_flush_wc();
4818 __raw_writel(0xaebecede, piobuf + spcl_off);
4819 }
4820 qib_flush_wc();
4821 qib_sendbuf_done(dd, pnum);
4822 /* and re-enable hdr check */
4823 dd->f_txchk_change(dd, pnum, 1, TXCHK_CHG_TYPE_ENAB1, NULL);
4824 }
4825
4826 /*
4827 * _start packet gets sent twice at start, _done gets sent twice at end
4828 */
4829 static void qib_autoneg_7322_send(struct qib_pportdata *ppd, int which)
4830 {
4831 struct qib_devdata *dd = ppd->dd;
4832 static u32 swapped;
4833 u32 dw, i, hcnt, dcnt, *data;
4834 static u32 hdr[7] = { 0xf002ffff, 0x48ffff, 0x6400abba };
4835 static u32 madpayload_start[0x40] = {
4836 0x1810103, 0x1, 0x0, 0x0, 0x2c90000, 0x2c9, 0x0, 0x0,
4837 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
4838 0x1, 0x1388, 0x15e, 0x1, /* rest 0's */
4839 };
4840 static u32 madpayload_done[0x40] = {
4841 0x1810103, 0x1, 0x0, 0x0, 0x2c90000, 0x2c9, 0x0, 0x0,
4842 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
4843 0x40000001, 0x1388, 0x15e, /* rest 0's */
4844 };
4845
4846 dcnt = ARRAY_SIZE(madpayload_start);
4847 hcnt = ARRAY_SIZE(hdr);
4848 if (!swapped) {
4849 /* for maintainability, do it at runtime */
4850 for (i = 0; i < hcnt; i++) {
4851 dw = (__force u32) cpu_to_be32(hdr[i]);
4852 hdr[i] = dw;
4853 }
4854 for (i = 0; i < dcnt; i++) {
4855 dw = (__force u32) cpu_to_be32(madpayload_start[i]);
4856 madpayload_start[i] = dw;
4857 dw = (__force u32) cpu_to_be32(madpayload_done[i]);
4858 madpayload_done[i] = dw;
4859 }
4860 swapped = 1;
4861 }
4862
4863 data = which ? madpayload_done : madpayload_start;
4864
4865 autoneg_7322_sendpkt(ppd, hdr, dcnt, data);
4866 qib_read_kreg64(dd, kr_scratch);
4867 udelay(2);
4868 autoneg_7322_sendpkt(ppd, hdr, dcnt, data);
4869 qib_read_kreg64(dd, kr_scratch);
4870 udelay(2);
4871 }
4872
4873 /*
4874 * Do the absolute minimum to cause an IB speed change, and make it
4875 * ready, but don't actually trigger the change. The caller will
4876 * do that when ready (if link is in Polling training state, it will
4877 * happen immediately, otherwise when link next goes down)
4878 *
4879 * This routine should only be used as part of the DDR autonegotation
4880 * code for devices that are not compliant with IB 1.2 (or code that
4881 * fixes things up for same).
4882 *
4883 * When link has gone down, and autoneg enabled, or autoneg has
4884 * failed and we give up until next time we set both speeds, and
4885 * then we want IBTA enabled as well as "use max enabled speed.
4886 */
4887 static void set_7322_ibspeed_fast(struct qib_pportdata *ppd, u32 speed)
4888 {
4889 u64 newctrlb;
4890 newctrlb = ppd->cpspec->ibcctrl_b & ~(IBA7322_IBC_SPEED_MASK |
4891 IBA7322_IBC_IBTA_1_2_MASK |
4892 IBA7322_IBC_MAX_SPEED_MASK);
4893
4894 if (speed & (speed - 1)) /* multiple speeds */
4895 newctrlb |= (speed << IBA7322_IBC_SPEED_LSB) |
4896 IBA7322_IBC_IBTA_1_2_MASK |
4897 IBA7322_IBC_MAX_SPEED_MASK;
4898 else
4899 newctrlb |= speed == QIB_IB_QDR ?
4900 IBA7322_IBC_SPEED_QDR | IBA7322_IBC_IBTA_1_2_MASK :
4901 ((speed == QIB_IB_DDR ?
4902 IBA7322_IBC_SPEED_DDR : IBA7322_IBC_SPEED_SDR));
4903
4904 if (newctrlb == ppd->cpspec->ibcctrl_b)
4905 return;
4906
4907 ppd->cpspec->ibcctrl_b = newctrlb;
4908 qib_write_kreg_port(ppd, krp_ibcctrl_b, ppd->cpspec->ibcctrl_b);
4909 qib_write_kreg(ppd->dd, kr_scratch, 0);
4910 }
4911
4912 /*
4913 * This routine is only used when we are not talking to another
4914 * IB 1.2-compliant device that we think can do DDR.
4915 * (This includes all existing switch chips as of Oct 2007.)
4916 * 1.2-compliant devices go directly to DDR prior to reaching INIT
4917 */
4918 static void try_7322_autoneg(struct qib_pportdata *ppd)
4919 {
4920 unsigned long flags;
4921
4922 spin_lock_irqsave(&ppd->lflags_lock, flags);
4923 ppd->lflags |= QIBL_IB_AUTONEG_INPROG;
4924 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
4925 qib_autoneg_7322_send(ppd, 0);
4926 set_7322_ibspeed_fast(ppd, QIB_IB_DDR);
4927 qib_7322_mini_pcs_reset(ppd);
4928 /* 2 msec is minimum length of a poll cycle */
4929 schedule_delayed_work(&ppd->cpspec->autoneg_work,
4930 msecs_to_jiffies(2));
4931 }
4932
4933 /*
4934 * Handle the empirically determined mechanism for auto-negotiation
4935 * of DDR speed with switches.
4936 */
4937 static void autoneg_7322_work(struct work_struct *work)
4938 {
4939 struct qib_pportdata *ppd;
4940 struct qib_devdata *dd;
4941 u64 startms;
4942 u32 i;
4943 unsigned long flags;
4944
4945 ppd = container_of(work, struct qib_chippport_specific,
4946 autoneg_work.work)->ppd;
4947 dd = ppd->dd;
4948
4949 startms = jiffies_to_msecs(jiffies);
4950
4951 /*
4952 * Busy wait for this first part, it should be at most a
4953 * few hundred usec, since we scheduled ourselves for 2msec.
4954 */
4955 for (i = 0; i < 25; i++) {
4956 if (SYM_FIELD(ppd->lastibcstat, IBCStatusA_0, LinkState)
4957 == IB_7322_LT_STATE_POLLQUIET) {
4958 qib_set_linkstate(ppd, QIB_IB_LINKDOWN_DISABLE);
4959 break;
4960 }
4961 udelay(100);
4962 }
4963
4964 if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG))
4965 goto done; /* we got there early or told to stop */
4966
4967 /* we expect this to timeout */
4968 if (wait_event_timeout(ppd->cpspec->autoneg_wait,
4969 !(ppd->lflags & QIBL_IB_AUTONEG_INPROG),
4970 msecs_to_jiffies(90)))
4971 goto done;
4972 qib_7322_mini_pcs_reset(ppd);
4973
4974 /* we expect this to timeout */
4975 if (wait_event_timeout(ppd->cpspec->autoneg_wait,
4976 !(ppd->lflags & QIBL_IB_AUTONEG_INPROG),
4977 msecs_to_jiffies(1700)))
4978 goto done;
4979 qib_7322_mini_pcs_reset(ppd);
4980
4981 set_7322_ibspeed_fast(ppd, QIB_IB_SDR);
4982
4983 /*
4984 * Wait up to 250 msec for link to train and get to INIT at DDR;
4985 * this should terminate early.
4986 */
4987 wait_event_timeout(ppd->cpspec->autoneg_wait,
4988 !(ppd->lflags & QIBL_IB_AUTONEG_INPROG),
4989 msecs_to_jiffies(250));
4990 done:
4991 if (ppd->lflags & QIBL_IB_AUTONEG_INPROG) {
4992 spin_lock_irqsave(&ppd->lflags_lock, flags);
4993 ppd->lflags &= ~QIBL_IB_AUTONEG_INPROG;
4994 if (ppd->cpspec->autoneg_tries == AUTONEG_TRIES) {
4995 ppd->lflags |= QIBL_IB_AUTONEG_FAILED;
4996 ppd->cpspec->autoneg_tries = 0;
4997 }
4998 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
4999 set_7322_ibspeed_fast(ppd, ppd->link_speed_enabled);
5000 }
5001 }
5002
5003 /*
5004 * This routine is used to request IPG set in the QLogic switch.
5005 * Only called if r1.
5006 */
5007 static void try_7322_ipg(struct qib_pportdata *ppd)
5008 {
5009 struct qib_ibport *ibp = &ppd->ibport_data;
5010 struct ib_mad_send_buf *send_buf;
5011 struct ib_mad_agent *agent;
5012 struct ib_smp *smp;
5013 unsigned delay;
5014 int ret;
5015
5016 agent = ibp->send_agent;
5017 if (!agent)
5018 goto retry;
5019
5020 send_buf = ib_create_send_mad(agent, 0, 0, 0, IB_MGMT_MAD_HDR,
5021 IB_MGMT_MAD_DATA, GFP_ATOMIC);
5022 if (IS_ERR(send_buf))
5023 goto retry;
5024
5025 if (!ibp->smi_ah) {
5026 struct ib_ah_attr attr;
5027 struct ib_ah *ah;
5028
5029 memset(&attr, 0, sizeof attr);
5030 attr.dlid = be16_to_cpu(IB_LID_PERMISSIVE);
5031 attr.port_num = ppd->port;
5032 ah = ib_create_ah(ibp->qp0->ibqp.pd, &attr);
5033 if (IS_ERR(ah))
5034 ret = -EINVAL;
5035 else {
5036 send_buf->ah = ah;
5037 ibp->smi_ah = to_iah(ah);
5038 ret = 0;
5039 }
5040 } else {
5041 send_buf->ah = &ibp->smi_ah->ibah;
5042 ret = 0;
5043 }
5044
5045 smp = send_buf->mad;
5046 smp->base_version = IB_MGMT_BASE_VERSION;
5047 smp->mgmt_class = IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE;
5048 smp->class_version = 1;
5049 smp->method = IB_MGMT_METHOD_SEND;
5050 smp->hop_cnt = 1;
5051 smp->attr_id = QIB_VENDOR_IPG;
5052 smp->attr_mod = 0;
5053
5054 if (!ret)
5055 ret = ib_post_send_mad(send_buf, NULL);
5056 if (ret)
5057 ib_free_send_mad(send_buf);
5058 retry:
5059 delay = 2 << ppd->cpspec->ipg_tries;
5060 schedule_delayed_work(&ppd->cpspec->ipg_work, msecs_to_jiffies(delay));
5061 }
5062
5063 /*
5064 * Timeout handler for setting IPG.
5065 * Only called if r1.
5066 */
5067 static void ipg_7322_work(struct work_struct *work)
5068 {
5069 struct qib_pportdata *ppd;
5070
5071 ppd = container_of(work, struct qib_chippport_specific,
5072 ipg_work.work)->ppd;
5073 if ((ppd->lflags & (QIBL_LINKINIT | QIBL_LINKARMED | QIBL_LINKACTIVE))
5074 && ++ppd->cpspec->ipg_tries <= 10)
5075 try_7322_ipg(ppd);
5076 }
5077
5078 static u32 qib_7322_iblink_state(u64 ibcs)
5079 {
5080 u32 state = (u32)SYM_FIELD(ibcs, IBCStatusA_0, LinkState);
5081
5082 switch (state) {
5083 case IB_7322_L_STATE_INIT:
5084 state = IB_PORT_INIT;
5085 break;
5086 case IB_7322_L_STATE_ARM:
5087 state = IB_PORT_ARMED;
5088 break;
5089 case IB_7322_L_STATE_ACTIVE:
5090 /* fall through */
5091 case IB_7322_L_STATE_ACT_DEFER:
5092 state = IB_PORT_ACTIVE;
5093 break;
5094 default: /* fall through */
5095 case IB_7322_L_STATE_DOWN:
5096 state = IB_PORT_DOWN;
5097 break;
5098 }
5099 return state;
5100 }
5101
5102 /* returns the IBTA port state, rather than the IBC link training state */
5103 static u8 qib_7322_phys_portstate(u64 ibcs)
5104 {
5105 u8 state = (u8)SYM_FIELD(ibcs, IBCStatusA_0, LinkTrainingState);
5106 return qib_7322_physportstate[state];
5107 }
5108
5109 static int qib_7322_ib_updown(struct qib_pportdata *ppd, int ibup, u64 ibcs)
5110 {
5111 int ret = 0, symadj = 0;
5112 unsigned long flags;
5113 int mult;
5114
5115 spin_lock_irqsave(&ppd->lflags_lock, flags);
5116 ppd->lflags &= ~QIBL_IB_FORCE_NOTIFY;
5117 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
5118
5119 /* Update our picture of width and speed from chip */
5120 if (ibcs & SYM_MASK(IBCStatusA_0, LinkSpeedQDR)) {
5121 ppd->link_speed_active = QIB_IB_QDR;
5122 mult = 4;
5123 } else if (ibcs & SYM_MASK(IBCStatusA_0, LinkSpeedActive)) {
5124 ppd->link_speed_active = QIB_IB_DDR;
5125 mult = 2;
5126 } else {
5127 ppd->link_speed_active = QIB_IB_SDR;
5128 mult = 1;
5129 }
5130 if (ibcs & SYM_MASK(IBCStatusA_0, LinkWidthActive)) {
5131 ppd->link_width_active = IB_WIDTH_4X;
5132 mult *= 4;
5133 } else
5134 ppd->link_width_active = IB_WIDTH_1X;
5135 ppd->delay_mult = ib_rate_to_delay[mult_to_ib_rate(mult)];
5136
5137 if (!ibup) {
5138 u64 clr;
5139
5140 /* Link went down. */
5141 /* do IPG MAD again after linkdown, even if last time failed */
5142 ppd->cpspec->ipg_tries = 0;
5143 clr = qib_read_kreg_port(ppd, krp_ibcstatus_b) &
5144 (SYM_MASK(IBCStatusB_0, heartbeat_timed_out) |
5145 SYM_MASK(IBCStatusB_0, heartbeat_crosstalk));
5146 if (clr)
5147 qib_write_kreg_port(ppd, krp_ibcstatus_b, clr);
5148 if (!(ppd->lflags & (QIBL_IB_AUTONEG_FAILED |
5149 QIBL_IB_AUTONEG_INPROG)))
5150 set_7322_ibspeed_fast(ppd, ppd->link_speed_enabled);
5151 if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) {
5152 /* unlock the Tx settings, speed may change */
5153 qib_write_kreg_port(ppd, krp_tx_deemph_override,
5154 SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
5155 reset_tx_deemphasis_override));
5156 qib_cancel_sends(ppd);
5157 /* on link down, ensure sane pcs state */
5158 qib_7322_mini_pcs_reset(ppd);
5159 spin_lock_irqsave(&ppd->sdma_lock, flags);
5160 if (__qib_sdma_running(ppd))
5161 __qib_sdma_process_event(ppd,
5162 qib_sdma_event_e70_go_idle);
5163 spin_unlock_irqrestore(&ppd->sdma_lock, flags);
5164 }
5165 clr = read_7322_creg32_port(ppd, crp_iblinkdown);
5166 if (clr == ppd->cpspec->iblnkdownsnap)
5167 ppd->cpspec->iblnkdowndelta++;
5168 } else {
5169 if (qib_compat_ddr_negotiate &&
5170 !(ppd->lflags & (QIBL_IB_AUTONEG_FAILED |
5171 QIBL_IB_AUTONEG_INPROG)) &&
5172 ppd->link_speed_active == QIB_IB_SDR &&
5173 (ppd->link_speed_enabled & QIB_IB_DDR)
5174 && ppd->cpspec->autoneg_tries < AUTONEG_TRIES) {
5175 /* we are SDR, and auto-negotiation enabled */
5176 ++ppd->cpspec->autoneg_tries;
5177 if (!ppd->cpspec->ibdeltainprog) {
5178 ppd->cpspec->ibdeltainprog = 1;
5179 ppd->cpspec->ibsymdelta +=
5180 read_7322_creg32_port(ppd,
5181 crp_ibsymbolerr) -
5182 ppd->cpspec->ibsymsnap;
5183 ppd->cpspec->iblnkerrdelta +=
5184 read_7322_creg32_port(ppd,
5185 crp_iblinkerrrecov) -
5186 ppd->cpspec->iblnkerrsnap;
5187 }
5188 try_7322_autoneg(ppd);
5189 ret = 1; /* no other IB status change processing */
5190 } else if ((ppd->lflags & QIBL_IB_AUTONEG_INPROG) &&
5191 ppd->link_speed_active == QIB_IB_SDR) {
5192 qib_autoneg_7322_send(ppd, 1);
5193 set_7322_ibspeed_fast(ppd, QIB_IB_DDR);
5194 qib_7322_mini_pcs_reset(ppd);
5195 udelay(2);
5196 ret = 1; /* no other IB status change processing */
5197 } else if ((ppd->lflags & QIBL_IB_AUTONEG_INPROG) &&
5198 (ppd->link_speed_active & QIB_IB_DDR)) {
5199 spin_lock_irqsave(&ppd->lflags_lock, flags);
5200 ppd->lflags &= ~(QIBL_IB_AUTONEG_INPROG |
5201 QIBL_IB_AUTONEG_FAILED);
5202 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
5203 ppd->cpspec->autoneg_tries = 0;
5204 /* re-enable SDR, for next link down */
5205 set_7322_ibspeed_fast(ppd, ppd->link_speed_enabled);
5206 wake_up(&ppd->cpspec->autoneg_wait);
5207 symadj = 1;
5208 } else if (ppd->lflags & QIBL_IB_AUTONEG_FAILED) {
5209 /*
5210 * Clear autoneg failure flag, and do setup
5211 * so we'll try next time link goes down and
5212 * back to INIT (possibly connected to a
5213 * different device).
5214 */
5215 spin_lock_irqsave(&ppd->lflags_lock, flags);
5216 ppd->lflags &= ~QIBL_IB_AUTONEG_FAILED;
5217 spin_unlock_irqrestore(&ppd->lflags_lock, flags);
5218 ppd->cpspec->ibcctrl_b |= IBA7322_IBC_IBTA_1_2_MASK;
5219 symadj = 1;
5220 }
5221 if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) {
5222 symadj = 1;
5223 if (ppd->dd->cspec->r1 && ppd->cpspec->ipg_tries <= 10)
5224 try_7322_ipg(ppd);
5225 if (!ppd->cpspec->recovery_init)
5226 setup_7322_link_recovery(ppd, 0);
5227 ppd->cpspec->qdr_dfe_time = jiffies +
5228 msecs_to_jiffies(QDR_DFE_DISABLE_DELAY);
5229 }
5230 ppd->cpspec->ibmalfusesnap = 0;
5231 ppd->cpspec->ibmalfsnap = read_7322_creg32_port(ppd,
5232 crp_errlink);
5233 }
5234 if (symadj) {
5235 ppd->cpspec->iblnkdownsnap =
5236 read_7322_creg32_port(ppd, crp_iblinkdown);
5237 if (ppd->cpspec->ibdeltainprog) {
5238 ppd->cpspec->ibdeltainprog = 0;
5239 ppd->cpspec->ibsymdelta += read_7322_creg32_port(ppd,
5240 crp_ibsymbolerr) - ppd->cpspec->ibsymsnap;
5241 ppd->cpspec->iblnkerrdelta += read_7322_creg32_port(ppd,
5242 crp_iblinkerrrecov) - ppd->cpspec->iblnkerrsnap;
5243 }
5244 } else if (!ibup && qib_compat_ddr_negotiate &&
5245 !ppd->cpspec->ibdeltainprog &&
5246 !(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) {
5247 ppd->cpspec->ibdeltainprog = 1;
5248 ppd->cpspec->ibsymsnap = read_7322_creg32_port(ppd,
5249 crp_ibsymbolerr);
5250 ppd->cpspec->iblnkerrsnap = read_7322_creg32_port(ppd,
5251 crp_iblinkerrrecov);
5252 }
5253
5254 if (!ret)
5255 qib_setup_7322_setextled(ppd, ibup);
5256 return ret;
5257 }
5258
5259 /*
5260 * Does read/modify/write to appropriate registers to
5261 * set output and direction bits selected by mask.
5262 * these are in their canonical postions (e.g. lsb of
5263 * dir will end up in D48 of extctrl on existing chips).
5264 * returns contents of GP Inputs.
5265 */
5266 static int gpio_7322_mod(struct qib_devdata *dd, u32 out, u32 dir, u32 mask)
5267 {
5268 u64 read_val, new_out;
5269 unsigned long flags;
5270
5271 if (mask) {
5272 /* some bits being written, lock access to GPIO */
5273 dir &= mask;
5274 out &= mask;
5275 spin_lock_irqsave(&dd->cspec->gpio_lock, flags);
5276 dd->cspec->extctrl &= ~((u64)mask << SYM_LSB(EXTCtrl, GPIOOe));
5277 dd->cspec->extctrl |= ((u64) dir << SYM_LSB(EXTCtrl, GPIOOe));
5278 new_out = (dd->cspec->gpio_out & ~mask) | out;
5279
5280 qib_write_kreg(dd, kr_extctrl, dd->cspec->extctrl);
5281 qib_write_kreg(dd, kr_gpio_out, new_out);
5282 dd->cspec->gpio_out = new_out;
5283 spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags);
5284 }
5285 /*
5286 * It is unlikely that a read at this time would get valid
5287 * data on a pin whose direction line was set in the same
5288 * call to this function. We include the read here because
5289 * that allows us to potentially combine a change on one pin with
5290 * a read on another, and because the old code did something like
5291 * this.
5292 */
5293 read_val = qib_read_kreg64(dd, kr_extstatus);
5294 return SYM_FIELD(read_val, EXTStatus, GPIOIn);
5295 }
5296
5297 /* Enable writes to config EEPROM, if possible. Returns previous state */
5298 static int qib_7322_eeprom_wen(struct qib_devdata *dd, int wen)
5299 {
5300 int prev_wen;
5301 u32 mask;
5302
5303 mask = 1 << QIB_EEPROM_WEN_NUM;
5304 prev_wen = ~gpio_7322_mod(dd, 0, 0, 0) >> QIB_EEPROM_WEN_NUM;
5305 gpio_7322_mod(dd, wen ? 0 : mask, mask, mask);
5306
5307 return prev_wen & 1;
5308 }
5309
5310 /*
5311 * Read fundamental info we need to use the chip. These are
5312 * the registers that describe chip capabilities, and are
5313 * saved in shadow registers.
5314 */
5315 static void get_7322_chip_params(struct qib_devdata *dd)
5316 {
5317 u64 val;
5318 u32 piobufs;
5319 int mtu;
5320
5321 dd->palign = qib_read_kreg32(dd, kr_pagealign);
5322
5323 dd->uregbase = qib_read_kreg32(dd, kr_userregbase);
5324
5325 dd->rcvtidcnt = qib_read_kreg32(dd, kr_rcvtidcnt);
5326 dd->rcvtidbase = qib_read_kreg32(dd, kr_rcvtidbase);
5327 dd->rcvegrbase = qib_read_kreg32(dd, kr_rcvegrbase);
5328 dd->piobufbase = qib_read_kreg64(dd, kr_sendpiobufbase);
5329 dd->pio2k_bufbase = dd->piobufbase & 0xffffffff;
5330
5331 val = qib_read_kreg64(dd, kr_sendpiobufcnt);
5332 dd->piobcnt2k = val & ~0U;
5333 dd->piobcnt4k = val >> 32;
5334 val = qib_read_kreg64(dd, kr_sendpiosize);
5335 dd->piosize2k = val & ~0U;
5336 dd->piosize4k = val >> 32;
5337
5338 mtu = ib_mtu_enum_to_int(qib_ibmtu);
5339 if (mtu == -1)
5340 mtu = QIB_DEFAULT_MTU;
5341 dd->pport[0].ibmtu = (u32)mtu;
5342 dd->pport[1].ibmtu = (u32)mtu;
5343
5344 /* these may be adjusted in init_chip_wc_pat() */
5345 dd->pio2kbase = (u32 __iomem *)
5346 ((char __iomem *) dd->kregbase + dd->pio2k_bufbase);
5347 dd->pio4kbase = (u32 __iomem *)
5348 ((char __iomem *) dd->kregbase +
5349 (dd->piobufbase >> 32));
5350 /*
5351 * 4K buffers take 2 pages; we use roundup just to be
5352 * paranoid; we calculate it once here, rather than on
5353 * ever buf allocate
5354 */
5355 dd->align4k = ALIGN(dd->piosize4k, dd->palign);
5356
5357 piobufs = dd->piobcnt4k + dd->piobcnt2k + NUM_VL15_BUFS;
5358
5359 dd->pioavregs = ALIGN(piobufs, sizeof(u64) * BITS_PER_BYTE / 2) /
5360 (sizeof(u64) * BITS_PER_BYTE / 2);
5361 }
5362
5363 /*
5364 * The chip base addresses in cspec and cpspec have to be set
5365 * after possible init_chip_wc_pat(), rather than in
5366 * get_7322_chip_params(), so split out as separate function
5367 */
5368 static void qib_7322_set_baseaddrs(struct qib_devdata *dd)
5369 {
5370 u32 cregbase;
5371 cregbase = qib_read_kreg32(dd, kr_counterregbase);
5372
5373 dd->cspec->cregbase = (u64 __iomem *)(cregbase +
5374 (char __iomem *)dd->kregbase);
5375
5376 dd->egrtidbase = (u64 __iomem *)
5377 ((char __iomem *) dd->kregbase + dd->rcvegrbase);
5378
5379 /* port registers are defined as relative to base of chip */
5380 dd->pport[0].cpspec->kpregbase =
5381 (u64 __iomem *)((char __iomem *)dd->kregbase);
5382 dd->pport[1].cpspec->kpregbase =
5383 (u64 __iomem *)(dd->palign +
5384 (char __iomem *)dd->kregbase);
5385 dd->pport[0].cpspec->cpregbase =
5386 (u64 __iomem *)(qib_read_kreg_port(&dd->pport[0],
5387 kr_counterregbase) + (char __iomem *)dd->kregbase);
5388 dd->pport[1].cpspec->cpregbase =
5389 (u64 __iomem *)(qib_read_kreg_port(&dd->pport[1],
5390 kr_counterregbase) + (char __iomem *)dd->kregbase);
5391 }
5392
5393 /*
5394 * This is a fairly special-purpose observer, so we only support
5395 * the port-specific parts of SendCtrl
5396 */
5397
5398 #define SENDCTRL_SHADOWED (SYM_MASK(SendCtrl_0, SendEnable) | \
5399 SYM_MASK(SendCtrl_0, SDmaEnable) | \
5400 SYM_MASK(SendCtrl_0, SDmaIntEnable) | \
5401 SYM_MASK(SendCtrl_0, SDmaSingleDescriptor) | \
5402 SYM_MASK(SendCtrl_0, SDmaHalt) | \
5403 SYM_MASK(SendCtrl_0, IBVLArbiterEn) | \
5404 SYM_MASK(SendCtrl_0, ForceCreditUpToDate))
5405
5406 static int sendctrl_hook(struct qib_devdata *dd,
5407 const struct diag_observer *op, u32 offs,
5408 u64 *data, u64 mask, int only_32)
5409 {
5410 unsigned long flags;
5411 unsigned idx;
5412 unsigned pidx;
5413 struct qib_pportdata *ppd = NULL;
5414 u64 local_data, all_bits;
5415
5416 /*
5417 * The fixed correspondence between Physical ports and pports is
5418 * severed. We need to hunt for the ppd that corresponds
5419 * to the offset we got. And we have to do that without admitting
5420 * we know the stride, apparently.
5421 */
5422 for (pidx = 0; pidx < dd->num_pports; ++pidx) {
5423 u64 __iomem *psptr;
5424 u32 psoffs;
5425
5426 ppd = dd->pport + pidx;
5427 if (!ppd->cpspec->kpregbase)
5428 continue;
5429
5430 psptr = ppd->cpspec->kpregbase + krp_sendctrl;
5431 psoffs = (u32) (psptr - dd->kregbase) * sizeof(*psptr);
5432 if (psoffs == offs)
5433 break;
5434 }
5435
5436 /* If pport is not being managed by driver, just avoid shadows. */
5437 if (pidx >= dd->num_pports)
5438 ppd = NULL;
5439
5440 /* In any case, "idx" is flat index in kreg space */
5441 idx = offs / sizeof(u64);
5442
5443 all_bits = ~0ULL;
5444 if (only_32)
5445 all_bits >>= 32;
5446
5447 spin_lock_irqsave(&dd->sendctrl_lock, flags);
5448 if (!ppd || (mask & all_bits) != all_bits) {
5449 /*
5450 * At least some mask bits are zero, so we need
5451 * to read. The judgement call is whether from
5452 * reg or shadow. First-cut: read reg, and complain
5453 * if any bits which should be shadowed are different
5454 * from their shadowed value.
5455 */
5456 if (only_32)
5457 local_data = (u64)qib_read_kreg32(dd, idx);
5458 else
5459 local_data = qib_read_kreg64(dd, idx);
5460 *data = (local_data & ~mask) | (*data & mask);
5461 }
5462 if (mask) {
5463 /*
5464 * At least some mask bits are one, so we need
5465 * to write, but only shadow some bits.
5466 */
5467 u64 sval, tval; /* Shadowed, transient */
5468
5469 /*
5470 * New shadow val is bits we don't want to touch,
5471 * ORed with bits we do, that are intended for shadow.
5472 */
5473 if (ppd) {
5474 sval = ppd->p_sendctrl & ~mask;
5475 sval |= *data & SENDCTRL_SHADOWED & mask;
5476 ppd->p_sendctrl = sval;
5477 } else
5478 sval = *data & SENDCTRL_SHADOWED & mask;
5479 tval = sval | (*data & ~SENDCTRL_SHADOWED & mask);
5480 qib_write_kreg(dd, idx, tval);
5481 qib_write_kreg(dd, kr_scratch, 0Ull);
5482 }
5483 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
5484 return only_32 ? 4 : 8;
5485 }
5486
5487 static const struct diag_observer sendctrl_0_observer = {
5488 sendctrl_hook, KREG_IDX(SendCtrl_0) * sizeof(u64),
5489 KREG_IDX(SendCtrl_0) * sizeof(u64)
5490 };
5491
5492 static const struct diag_observer sendctrl_1_observer = {
5493 sendctrl_hook, KREG_IDX(SendCtrl_1) * sizeof(u64),
5494 KREG_IDX(SendCtrl_1) * sizeof(u64)
5495 };
5496
5497 static ushort sdma_fetch_prio = 8;
5498 module_param_named(sdma_fetch_prio, sdma_fetch_prio, ushort, S_IRUGO);
5499 MODULE_PARM_DESC(sdma_fetch_prio, "SDMA descriptor fetch priority");
5500
5501 /* Besides logging QSFP events, we set appropriate TxDDS values */
5502 static void init_txdds_table(struct qib_pportdata *ppd, int override);
5503
5504 static void qsfp_7322_event(struct work_struct *work)
5505 {
5506 struct qib_qsfp_data *qd;
5507 struct qib_pportdata *ppd;
5508 u64 pwrup;
5509 int ret;
5510 u32 le2;
5511
5512 qd = container_of(work, struct qib_qsfp_data, work);
5513 ppd = qd->ppd;
5514 pwrup = qd->t_insert + msecs_to_jiffies(QSFP_PWR_LAG_MSEC);
5515
5516 /*
5517 * Some QSFP's not only do not respond until the full power-up
5518 * time, but may behave badly if we try. So hold off responding
5519 * to insertion.
5520 */
5521 while (1) {
5522 u64 now = get_jiffies_64();
5523 if (time_after64(now, pwrup))
5524 break;
5525 msleep(1);
5526 }
5527 ret = qib_refresh_qsfp_cache(ppd, &qd->cache);
5528 /*
5529 * Need to change LE2 back to defaults if we couldn't
5530 * read the cable type (to handle cable swaps), so do this
5531 * even on failure to read cable information. We don't
5532 * get here for QME, so IS_QME check not needed here.
5533 */
5534 le2 = (!ret && qd->cache.atten[1] >= qib_long_atten &&
5535 !ppd->dd->cspec->r1 && QSFP_IS_CU(qd->cache.tech)) ?
5536 LE2_5m : LE2_DEFAULT;
5537 ibsd_wr_allchans(ppd, 13, (le2 << 7), BMASK(9, 7));
5538 init_txdds_table(ppd, 0);
5539 }
5540
5541 /*
5542 * There is little we can do but complain to the user if QSFP
5543 * initialization fails.
5544 */
5545 static void qib_init_7322_qsfp(struct qib_pportdata *ppd)
5546 {
5547 unsigned long flags;
5548 struct qib_qsfp_data *qd = &ppd->cpspec->qsfp_data;
5549 struct qib_devdata *dd = ppd->dd;
5550 u64 mod_prs_bit = QSFP_GPIO_MOD_PRS_N;
5551
5552 mod_prs_bit <<= (QSFP_GPIO_PORT2_SHIFT * ppd->hw_pidx);
5553 qd->ppd = ppd;
5554 qib_qsfp_init(qd, qsfp_7322_event);
5555 spin_lock_irqsave(&dd->cspec->gpio_lock, flags);
5556 dd->cspec->extctrl |= (mod_prs_bit << SYM_LSB(EXTCtrl, GPIOInvert));
5557 dd->cspec->gpio_mask |= mod_prs_bit;
5558 qib_write_kreg(dd, kr_extctrl, dd->cspec->extctrl);
5559 qib_write_kreg(dd, kr_gpio_mask, dd->cspec->gpio_mask);
5560 spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags);
5561 }
5562
5563 /*
5564 * called at device initialization time, and also if the txselect
5565 * module parameter is changed. This is used for cables that don't
5566 * have valid QSFP EEPROMs (not present, or attenuation is zero).
5567 * We initialize to the default, then if there is a specific
5568 * unit,port match, we use that (and set it immediately, for the
5569 * current speed, if the link is at INIT or better).
5570 * String format is "default# unit#,port#=# ... u,p=#", separators must
5571 * be a SPACE character. A newline terminates. The u,p=# tuples may
5572 * optionally have "u,p=#,#", where the final # is the H1 value
5573 * The last specific match is used (actually, all are used, but last
5574 * one is the one that winds up set); if none at all, fall back on default.
5575 */
5576 static void set_no_qsfp_atten(struct qib_devdata *dd, int change)
5577 {
5578 char *nxt, *str;
5579 u32 pidx, unit, port, deflt, h1;
5580 unsigned long val;
5581 int any = 0, seth1;
5582
5583 str = txselect_list;
5584
5585 /* default number is validated in setup_txselect() */
5586 deflt = simple_strtoul(str, &nxt, 0);
5587 for (pidx = 0; pidx < dd->num_pports; ++pidx)
5588 dd->pport[pidx].cpspec->no_eep = deflt;
5589
5590 while (*nxt && nxt[1]) {
5591 str = ++nxt;
5592 unit = simple_strtoul(str, &nxt, 0);
5593 if (nxt == str || !*nxt || *nxt != ',') {
5594 while (*nxt && *nxt++ != ' ') /* skip to next, if any */
5595 ;
5596 continue;
5597 }
5598 str = ++nxt;
5599 port = simple_strtoul(str, &nxt, 0);
5600 if (nxt == str || *nxt != '=') {
5601 while (*nxt && *nxt++ != ' ') /* skip to next, if any */
5602 ;
5603 continue;
5604 }
5605 str = ++nxt;
5606 val = simple_strtoul(str, &nxt, 0);
5607 if (nxt == str) {
5608 while (*nxt && *nxt++ != ' ') /* skip to next, if any */
5609 ;
5610 continue;
5611 }
5612 if (val >= TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ)
5613 continue;
5614 seth1 = 0;
5615 h1 = 0; /* gcc thinks it might be used uninitted */
5616 if (*nxt == ',' && nxt[1]) {
5617 str = ++nxt;
5618 h1 = (u32)simple_strtoul(str, &nxt, 0);
5619 if (nxt == str)
5620 while (*nxt && *nxt++ != ' ') /* skip */
5621 ;
5622 else
5623 seth1 = 1;
5624 }
5625 for (pidx = 0; dd->unit == unit && pidx < dd->num_pports;
5626 ++pidx) {
5627 struct qib_pportdata *ppd = &dd->pport[pidx];
5628
5629 if (ppd->port != port || !ppd->link_speed_supported)
5630 continue;
5631 ppd->cpspec->no_eep = val;
5632 if (seth1)
5633 ppd->cpspec->h1_val = h1;
5634 /* now change the IBC and serdes, overriding generic */
5635 init_txdds_table(ppd, 1);
5636 any++;
5637 }
5638 if (*nxt == '\n')
5639 break; /* done */
5640 }
5641 if (change && !any) {
5642 /* no specific setting, use the default.
5643 * Change the IBC and serdes, but since it's
5644 * general, don't override specific settings.
5645 */
5646 for (pidx = 0; pidx < dd->num_pports; ++pidx)
5647 if (dd->pport[pidx].link_speed_supported)
5648 init_txdds_table(&dd->pport[pidx], 0);
5649 }
5650 }
5651
5652 /* handle the txselect parameter changing */
5653 static int setup_txselect(const char *str, struct kernel_param *kp)
5654 {
5655 struct qib_devdata *dd;
5656 unsigned long val;
5657 char *n;
5658 if (strlen(str) >= MAX_ATTEN_LEN) {
5659 printk(KERN_INFO QIB_DRV_NAME " txselect_values string "
5660 "too long\n");
5661 return -ENOSPC;
5662 }
5663 val = simple_strtoul(str, &n, 0);
5664 if (n == str || val >= (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ)) {
5665 printk(KERN_INFO QIB_DRV_NAME
5666 "txselect_values must start with a number < %d\n",
5667 TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ);
5668 return -EINVAL;
5669 }
5670 strcpy(txselect_list, str);
5671
5672 list_for_each_entry(dd, &qib_dev_list, list)
5673 if (dd->deviceid == PCI_DEVICE_ID_QLOGIC_IB_7322)
5674 set_no_qsfp_atten(dd, 1);
5675 return 0;
5676 }
5677
5678 /*
5679 * Write the final few registers that depend on some of the
5680 * init setup. Done late in init, just before bringing up
5681 * the serdes.
5682 */
5683 static int qib_late_7322_initreg(struct qib_devdata *dd)
5684 {
5685 int ret = 0, n;
5686 u64 val;
5687
5688 qib_write_kreg(dd, kr_rcvhdrentsize, dd->rcvhdrentsize);
5689 qib_write_kreg(dd, kr_rcvhdrsize, dd->rcvhdrsize);
5690 qib_write_kreg(dd, kr_rcvhdrcnt, dd->rcvhdrcnt);
5691 qib_write_kreg(dd, kr_sendpioavailaddr, dd->pioavailregs_phys);
5692 val = qib_read_kreg64(dd, kr_sendpioavailaddr);
5693 if (val != dd->pioavailregs_phys) {
5694 qib_dev_err(dd, "Catastrophic software error, "
5695 "SendPIOAvailAddr written as %lx, "
5696 "read back as %llx\n",
5697 (unsigned long) dd->pioavailregs_phys,
5698 (unsigned long long) val);
5699 ret = -EINVAL;
5700 }
5701
5702 n = dd->piobcnt2k + dd->piobcnt4k + NUM_VL15_BUFS;
5703 qib_7322_txchk_change(dd, 0, n, TXCHK_CHG_TYPE_KERN, NULL);
5704 /* driver sends get pkey, lid, etc. checking also, to catch bugs */
5705 qib_7322_txchk_change(dd, 0, n, TXCHK_CHG_TYPE_ENAB1, NULL);
5706
5707 qib_register_observer(dd, &sendctrl_0_observer);
5708 qib_register_observer(dd, &sendctrl_1_observer);
5709
5710 dd->control &= ~QLOGIC_IB_C_SDMAFETCHPRIOEN;
5711 qib_write_kreg(dd, kr_control, dd->control);
5712 /*
5713 * Set SendDmaFetchPriority and init Tx params, including
5714 * QSFP handler on boards that have QSFP.
5715 * First set our default attenuation entry for cables that
5716 * don't have valid attenuation.
5717 */
5718 set_no_qsfp_atten(dd, 0);
5719 for (n = 0; n < dd->num_pports; ++n) {
5720 struct qib_pportdata *ppd = dd->pport + n;
5721
5722 qib_write_kreg_port(ppd, krp_senddmaprioritythld,
5723 sdma_fetch_prio & 0xf);
5724 /* Initialize qsfp if present on board. */
5725 if (dd->flags & QIB_HAS_QSFP)
5726 qib_init_7322_qsfp(ppd);
5727 }
5728 dd->control |= QLOGIC_IB_C_SDMAFETCHPRIOEN;
5729 qib_write_kreg(dd, kr_control, dd->control);
5730
5731 return ret;
5732 }
5733
5734 /* per IB port errors. */
5735 #define SENDCTRL_PIBP (MASK_ACROSS(0, 1) | MASK_ACROSS(3, 3) | \
5736 MASK_ACROSS(8, 15))
5737 #define RCVCTRL_PIBP (MASK_ACROSS(0, 17) | MASK_ACROSS(39, 41))
5738 #define ERRS_PIBP (MASK_ACROSS(57, 58) | MASK_ACROSS(54, 54) | \
5739 MASK_ACROSS(36, 49) | MASK_ACROSS(29, 34) | MASK_ACROSS(14, 17) | \
5740 MASK_ACROSS(0, 11))
5741
5742 /*
5743 * Write the initialization per-port registers that need to be done at
5744 * driver load and after reset completes (i.e., that aren't done as part
5745 * of other init procedures called from qib_init.c).
5746 * Some of these should be redundant on reset, but play safe.
5747 */
5748 static void write_7322_init_portregs(struct qib_pportdata *ppd)
5749 {
5750 u64 val;
5751 int i;
5752
5753 if (!ppd->link_speed_supported) {
5754 /* no buffer credits for this port */
5755 for (i = 1; i < 8; i++)
5756 qib_write_kreg_port(ppd, krp_rxcreditvl0 + i, 0);
5757 qib_write_kreg_port(ppd, krp_ibcctrl_b, 0);
5758 qib_write_kreg(ppd->dd, kr_scratch, 0);
5759 return;
5760 }
5761
5762 /*
5763 * Set the number of supported virtual lanes in IBC,
5764 * for flow control packet handling on unsupported VLs
5765 */
5766 val = qib_read_kreg_port(ppd, krp_ibsdtestiftx);
5767 val &= ~SYM_MASK(IB_SDTEST_IF_TX_0, VL_CAP);
5768 val |= (u64)(ppd->vls_supported - 1) <<
5769 SYM_LSB(IB_SDTEST_IF_TX_0, VL_CAP);
5770 qib_write_kreg_port(ppd, krp_ibsdtestiftx, val);
5771
5772 qib_write_kreg_port(ppd, krp_rcvbthqp, QIB_KD_QP);
5773
5774 /* enable tx header checking */
5775 qib_write_kreg_port(ppd, krp_sendcheckcontrol, IBA7322_SENDCHK_PKEY |
5776 IBA7322_SENDCHK_BTHQP | IBA7322_SENDCHK_SLID |
5777 IBA7322_SENDCHK_RAW_IPV6 | IBA7322_SENDCHK_MINSZ);
5778
5779 qib_write_kreg_port(ppd, krp_ncmodectrl,
5780 SYM_MASK(IBNCModeCtrl_0, ScrambleCapLocal));
5781
5782 /*
5783 * Unconditionally clear the bufmask bits. If SDMA is
5784 * enabled, we'll set them appropriately later.
5785 */
5786 qib_write_kreg_port(ppd, krp_senddmabufmask0, 0);
5787 qib_write_kreg_port(ppd, krp_senddmabufmask1, 0);
5788 qib_write_kreg_port(ppd, krp_senddmabufmask2, 0);
5789 if (ppd->dd->cspec->r1)
5790 ppd->p_sendctrl |= SYM_MASK(SendCtrl_0, ForceCreditUpToDate);
5791 }
5792
5793 /*
5794 * Write the initialization per-device registers that need to be done at
5795 * driver load and after reset completes (i.e., that aren't done as part
5796 * of other init procedures called from qib_init.c). Also write per-port
5797 * registers that are affected by overall device config, such as QP mapping
5798 * Some of these should be redundant on reset, but play safe.
5799 */
5800 static void write_7322_initregs(struct qib_devdata *dd)
5801 {
5802 struct qib_pportdata *ppd;
5803 int i, pidx;
5804 u64 val;
5805
5806 /* Set Multicast QPs received by port 2 to map to context one. */
5807 qib_write_kreg(dd, KREG_IDX(RcvQPMulticastContext_1), 1);
5808
5809 for (pidx = 0; pidx < dd->num_pports; ++pidx) {
5810 unsigned n, regno;
5811 unsigned long flags;
5812
5813 if (!dd->qpn_mask || !dd->pport[pidx].link_speed_supported)
5814 continue;
5815
5816 ppd = &dd->pport[pidx];
5817
5818 /* be paranoid against later code motion, etc. */
5819 spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags);
5820 ppd->p_rcvctrl |= SYM_MASK(RcvCtrl_0, RcvQPMapEnable);
5821 spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags);
5822
5823 /* Initialize QP to context mapping */
5824 regno = krp_rcvqpmaptable;
5825 val = 0;
5826 if (dd->num_pports > 1)
5827 n = dd->first_user_ctxt / dd->num_pports;
5828 else
5829 n = dd->first_user_ctxt - 1;
5830 for (i = 0; i < 32; ) {
5831 unsigned ctxt;
5832
5833 if (dd->num_pports > 1)
5834 ctxt = (i % n) * dd->num_pports + pidx;
5835 else if (i % n)
5836 ctxt = (i % n) + 1;
5837 else
5838 ctxt = ppd->hw_pidx;
5839 val |= ctxt << (5 * (i % 6));
5840 i++;
5841 if (i % 6 == 0) {
5842 qib_write_kreg_port(ppd, regno, val);
5843 val = 0;
5844 regno++;
5845 }
5846 }
5847 qib_write_kreg_port(ppd, regno, val);
5848 }
5849
5850 /*
5851 * Setup up interrupt mitigation for kernel contexts, but
5852 * not user contexts (user contexts use interrupts when
5853 * stalled waiting for any packet, so want those interrupts
5854 * right away).
5855 */
5856 for (i = 0; i < dd->first_user_ctxt; i++) {
5857 dd->cspec->rcvavail_timeout[i] = rcv_int_timeout;
5858 qib_write_kreg(dd, kr_rcvavailtimeout + i, rcv_int_timeout);
5859 }
5860
5861 /*
5862 * Initialize as (disabled) rcvflow tables. Application code
5863 * will setup each flow as it uses the flow.
5864 * Doesn't clear any of the error bits that might be set.
5865 */
5866 val = TIDFLOW_ERRBITS; /* these are W1C */
5867 for (i = 0; i < dd->cfgctxts; i++) {
5868 int flow;
5869 for (flow = 0; flow < NUM_TIDFLOWS_CTXT; flow++)
5870 qib_write_ureg(dd, ur_rcvflowtable+flow, val, i);
5871 }
5872
5873 /*
5874 * dual cards init to dual port recovery, single port cards to
5875 * the one port. Dual port cards may later adjust to 1 port,
5876 * and then back to dual port if both ports are connected
5877 * */
5878 if (dd->num_pports)
5879 setup_7322_link_recovery(dd->pport, dd->num_pports > 1);
5880 }
5881
5882 static int qib_init_7322_variables(struct qib_devdata *dd)
5883 {
5884 struct qib_pportdata *ppd;
5885 unsigned features, pidx, sbufcnt;
5886 int ret, mtu;
5887 u32 sbufs, updthresh;
5888
5889 /* pport structs are contiguous, allocated after devdata */
5890 ppd = (struct qib_pportdata *)(dd + 1);
5891 dd->pport = ppd;
5892 ppd[0].dd = dd;
5893 ppd[1].dd = dd;
5894
5895 dd->cspec = (struct qib_chip_specific *)(ppd + 2);
5896
5897 ppd[0].cpspec = (struct qib_chippport_specific *)(dd->cspec + 1);
5898 ppd[1].cpspec = &ppd[0].cpspec[1];
5899 ppd[0].cpspec->ppd = &ppd[0]; /* for autoneg_7322_work() */
5900 ppd[1].cpspec->ppd = &ppd[1]; /* for autoneg_7322_work() */
5901
5902 spin_lock_init(&dd->cspec->rcvmod_lock);
5903 spin_lock_init(&dd->cspec->gpio_lock);
5904
5905 /* we haven't yet set QIB_PRESENT, so use read directly */
5906 dd->revision = readq(&dd->kregbase[kr_revision]);
5907
5908 if ((dd->revision & 0xffffffffU) == 0xffffffffU) {
5909 qib_dev_err(dd, "Revision register read failure, "
5910 "giving up initialization\n");
5911 ret = -ENODEV;
5912 goto bail;
5913 }
5914 dd->flags |= QIB_PRESENT; /* now register routines work */
5915
5916 dd->majrev = (u8) SYM_FIELD(dd->revision, Revision_R, ChipRevMajor);
5917 dd->minrev = (u8) SYM_FIELD(dd->revision, Revision_R, ChipRevMinor);
5918 dd->cspec->r1 = dd->minrev == 1;
5919
5920 get_7322_chip_params(dd);
5921 features = qib_7322_boardname(dd);
5922
5923 /* now that piobcnt2k and 4k set, we can allocate these */
5924 sbufcnt = dd->piobcnt2k + dd->piobcnt4k +
5925 NUM_VL15_BUFS + BITS_PER_LONG - 1;
5926 sbufcnt /= BITS_PER_LONG;
5927 dd->cspec->sendchkenable = kmalloc(sbufcnt *
5928 sizeof(*dd->cspec->sendchkenable), GFP_KERNEL);
5929 dd->cspec->sendgrhchk = kmalloc(sbufcnt *
5930 sizeof(*dd->cspec->sendgrhchk), GFP_KERNEL);
5931 dd->cspec->sendibchk = kmalloc(sbufcnt *
5932 sizeof(*dd->cspec->sendibchk), GFP_KERNEL);
5933 if (!dd->cspec->sendchkenable || !dd->cspec->sendgrhchk ||
5934 !dd->cspec->sendibchk) {
5935 qib_dev_err(dd, "Failed allocation for hdrchk bitmaps\n");
5936 ret = -ENOMEM;
5937 goto bail;
5938 }
5939
5940 ppd = dd->pport;
5941
5942 /*
5943 * GPIO bits for TWSI data and clock,
5944 * used for serial EEPROM.
5945 */
5946 dd->gpio_sda_num = _QIB_GPIO_SDA_NUM;
5947 dd->gpio_scl_num = _QIB_GPIO_SCL_NUM;
5948 dd->twsi_eeprom_dev = QIB_TWSI_EEPROM_DEV;
5949
5950 dd->flags |= QIB_HAS_INTX | QIB_HAS_LINK_LATENCY |
5951 QIB_NODMA_RTAIL | QIB_HAS_VLSUPP | QIB_HAS_HDRSUPP |
5952 QIB_HAS_THRESH_UPDATE |
5953 (sdma_idle_cnt ? QIB_HAS_SDMA_TIMEOUT : 0);
5954 dd->flags |= qib_special_trigger ?
5955 QIB_USE_SPCL_TRIG : QIB_HAS_SEND_DMA;
5956
5957 /*
5958 * Setup initial values. These may change when PAT is enabled, but
5959 * we need these to do initial chip register accesses.
5960 */
5961 qib_7322_set_baseaddrs(dd);
5962
5963 mtu = ib_mtu_enum_to_int(qib_ibmtu);
5964 if (mtu == -1)
5965 mtu = QIB_DEFAULT_MTU;
5966
5967 dd->cspec->int_enable_mask = QIB_I_BITSEXTANT;
5968 /* all hwerrors become interrupts, unless special purposed */
5969 dd->cspec->hwerrmask = ~0ULL;
5970 /* link_recovery setup causes these errors, so ignore them,
5971 * other than clearing them when they occur */
5972 dd->cspec->hwerrmask &=
5973 ~(SYM_MASK(HwErrMask, IBSerdesPClkNotDetectMask_0) |
5974 SYM_MASK(HwErrMask, IBSerdesPClkNotDetectMask_1) |
5975 HWE_MASK(LATriggered));
5976
5977 for (pidx = 0; pidx < NUM_IB_PORTS; ++pidx) {
5978 struct qib_chippport_specific *cp = ppd->cpspec;
5979 ppd->link_speed_supported = features & PORT_SPD_CAP;
5980 features >>= PORT_SPD_CAP_SHIFT;
5981 if (!ppd->link_speed_supported) {
5982 /* single port mode (7340, or configured) */
5983 dd->skip_kctxt_mask |= 1 << pidx;
5984 if (pidx == 0) {
5985 /* Make sure port is disabled. */
5986 qib_write_kreg_port(ppd, krp_rcvctrl, 0);
5987 qib_write_kreg_port(ppd, krp_ibcctrl_a, 0);
5988 ppd[0] = ppd[1];
5989 dd->cspec->hwerrmask &= ~(SYM_MASK(HwErrMask,
5990 IBSerdesPClkNotDetectMask_0)
5991 | SYM_MASK(HwErrMask,
5992 SDmaMemReadErrMask_0));
5993 dd->cspec->int_enable_mask &= ~(
5994 SYM_MASK(IntMask, SDmaCleanupDoneMask_0) |
5995 SYM_MASK(IntMask, SDmaIdleIntMask_0) |
5996 SYM_MASK(IntMask, SDmaProgressIntMask_0) |
5997 SYM_MASK(IntMask, SDmaIntMask_0) |
5998 SYM_MASK(IntMask, ErrIntMask_0) |
5999 SYM_MASK(IntMask, SendDoneIntMask_0));
6000 } else {
6001 /* Make sure port is disabled. */
6002 qib_write_kreg_port(ppd, krp_rcvctrl, 0);
6003 qib_write_kreg_port(ppd, krp_ibcctrl_a, 0);
6004 dd->cspec->hwerrmask &= ~(SYM_MASK(HwErrMask,
6005 IBSerdesPClkNotDetectMask_1)
6006 | SYM_MASK(HwErrMask,
6007 SDmaMemReadErrMask_1));
6008 dd->cspec->int_enable_mask &= ~(
6009 SYM_MASK(IntMask, SDmaCleanupDoneMask_1) |
6010 SYM_MASK(IntMask, SDmaIdleIntMask_1) |
6011 SYM_MASK(IntMask, SDmaProgressIntMask_1) |
6012 SYM_MASK(IntMask, SDmaIntMask_1) |
6013 SYM_MASK(IntMask, ErrIntMask_1) |
6014 SYM_MASK(IntMask, SendDoneIntMask_1));
6015 }
6016 continue;
6017 }
6018
6019 dd->num_pports++;
6020 qib_init_pportdata(ppd, dd, pidx, dd->num_pports);
6021
6022 ppd->link_width_supported = IB_WIDTH_1X | IB_WIDTH_4X;
6023 ppd->link_width_enabled = IB_WIDTH_4X;
6024 ppd->link_speed_enabled = ppd->link_speed_supported;
6025 /*
6026 * Set the initial values to reasonable default, will be set
6027 * for real when link is up.
6028 */
6029 ppd->link_width_active = IB_WIDTH_4X;
6030 ppd->link_speed_active = QIB_IB_SDR;
6031 ppd->delay_mult = ib_rate_to_delay[IB_RATE_10_GBPS];
6032 switch (qib_num_cfg_vls) {
6033 case 1:
6034 ppd->vls_supported = IB_VL_VL0;
6035 break;
6036 case 2:
6037 ppd->vls_supported = IB_VL_VL0_1;
6038 break;
6039 default:
6040 qib_devinfo(dd->pcidev,
6041 "Invalid num_vls %u, using 4 VLs\n",
6042 qib_num_cfg_vls);
6043 qib_num_cfg_vls = 4;
6044 /* fall through */
6045 case 4:
6046 ppd->vls_supported = IB_VL_VL0_3;
6047 break;
6048 case 8:
6049 if (mtu <= 2048)
6050 ppd->vls_supported = IB_VL_VL0_7;
6051 else {
6052 qib_devinfo(dd->pcidev,
6053 "Invalid num_vls %u for MTU %d "
6054 ", using 4 VLs\n",
6055 qib_num_cfg_vls, mtu);
6056 ppd->vls_supported = IB_VL_VL0_3;
6057 qib_num_cfg_vls = 4;
6058 }
6059 break;
6060 }
6061 ppd->vls_operational = ppd->vls_supported;
6062
6063 init_waitqueue_head(&cp->autoneg_wait);
6064 INIT_DELAYED_WORK(&cp->autoneg_work,
6065 autoneg_7322_work);
6066 if (ppd->dd->cspec->r1)
6067 INIT_DELAYED_WORK(&cp->ipg_work, ipg_7322_work);
6068
6069 /*
6070 * For Mez and similar cards, no qsfp info, so do
6071 * the "cable info" setup here. Can be overridden
6072 * in adapter-specific routines.
6073 */
6074 if (!(dd->flags & QIB_HAS_QSFP)) {
6075 if (!IS_QMH(dd) && !IS_QME(dd))
6076 qib_devinfo(dd->pcidev, "IB%u:%u: "
6077 "Unknown mezzanine card type\n",
6078 dd->unit, ppd->port);
6079 cp->h1_val = IS_QMH(dd) ? H1_FORCE_QMH : H1_FORCE_QME;
6080 /*
6081 * Choose center value as default tx serdes setting
6082 * until changed through module parameter.
6083 */
6084 ppd->cpspec->no_eep = IS_QMH(dd) ?
6085 TXDDS_TABLE_SZ + 2 : TXDDS_TABLE_SZ + 4;
6086 } else
6087 cp->h1_val = H1_FORCE_VAL;
6088
6089 /* Avoid writes to chip for mini_init */
6090 if (!qib_mini_init)
6091 write_7322_init_portregs(ppd);
6092
6093 init_timer(&cp->chase_timer);
6094 cp->chase_timer.function = reenable_chase;
6095 cp->chase_timer.data = (unsigned long)ppd;
6096
6097 ppd++;
6098 }
6099
6100 dd->rcvhdrentsize = QIB_RCVHDR_ENTSIZE;
6101 dd->rcvhdrsize = QIB_DFLT_RCVHDRSIZE;
6102 dd->rhf_offset = dd->rcvhdrentsize - sizeof(u64) / sizeof(u32);
6103
6104 /* we always allocate at least 2048 bytes for eager buffers */
6105 dd->rcvegrbufsize = max(mtu, 2048);
6106
6107 qib_7322_tidtemplate(dd);
6108
6109 /*
6110 * We can request a receive interrupt for 1 or
6111 * more packets from current offset.
6112 */
6113 dd->rhdrhead_intr_off =
6114 (u64) rcv_int_count << IBA7322_HDRHEAD_PKTINT_SHIFT;
6115
6116 /* setup the stats timer; the add_timer is done at end of init */
6117 init_timer(&dd->stats_timer);
6118 dd->stats_timer.function = qib_get_7322_faststats;
6119 dd->stats_timer.data = (unsigned long) dd;
6120
6121 dd->ureg_align = 0x10000; /* 64KB alignment */
6122
6123 dd->piosize2kmax_dwords = dd->piosize2k >> 2;
6124
6125 qib_7322_config_ctxts(dd);
6126 qib_set_ctxtcnt(dd);
6127
6128 if (qib_wc_pat) {
6129 resource_size_t vl15off;
6130 /*
6131 * We do not set WC on the VL15 buffers to avoid
6132 * a rare problem with unaligned writes from
6133 * interrupt-flushed store buffers, so we need
6134 * to map those separately here. We can't solve
6135 * this for the rarely used mtrr case.
6136 */
6137 ret = init_chip_wc_pat(dd, 0);
6138 if (ret)
6139 goto bail;
6140
6141 /* vl15 buffers start just after the 4k buffers */
6142 vl15off = dd->physaddr + (dd->piobufbase >> 32) +
6143 dd->piobcnt4k * dd->align4k;
6144 dd->piovl15base = ioremap_nocache(vl15off,
6145 NUM_VL15_BUFS * dd->align4k);
6146 if (!dd->piovl15base)
6147 goto bail;
6148 }
6149 qib_7322_set_baseaddrs(dd); /* set chip access pointers now */
6150
6151 ret = 0;
6152 if (qib_mini_init)
6153 goto bail;
6154 if (!dd->num_pports) {
6155 qib_dev_err(dd, "No ports enabled, giving up initialization\n");
6156 goto bail; /* no error, so can still figure out why err */
6157 }
6158
6159 write_7322_initregs(dd);
6160 ret = qib_create_ctxts(dd);
6161 init_7322_cntrnames(dd);
6162
6163 updthresh = 8U; /* update threshold */
6164
6165 /* use all of 4KB buffers for the kernel SDMA, zero if !SDMA.
6166 * reserve the update threshold amount for other kernel use, such
6167 * as sending SMI, MAD, and ACKs, or 3, whichever is greater,
6168 * unless we aren't enabling SDMA, in which case we want to use
6169 * all the 4k bufs for the kernel.
6170 * if this was less than the update threshold, we could wait
6171 * a long time for an update. Coded this way because we
6172 * sometimes change the update threshold for various reasons,
6173 * and we want this to remain robust.
6174 */
6175 if (dd->flags & QIB_HAS_SEND_DMA) {
6176 dd->cspec->sdmabufcnt = dd->piobcnt4k;
6177 sbufs = updthresh > 3 ? updthresh : 3;
6178 } else {
6179 dd->cspec->sdmabufcnt = 0;
6180 sbufs = dd->piobcnt4k;
6181 }
6182 dd->cspec->lastbuf_for_pio = dd->piobcnt2k + dd->piobcnt4k -
6183 dd->cspec->sdmabufcnt;
6184 dd->lastctxt_piobuf = dd->cspec->lastbuf_for_pio - sbufs;
6185 dd->cspec->lastbuf_for_pio--; /* range is <= , not < */
6186 dd->pbufsctxt = (dd->cfgctxts > dd->first_user_ctxt) ?
6187 dd->lastctxt_piobuf / (dd->cfgctxts - dd->first_user_ctxt) : 0;
6188
6189 /*
6190 * If we have 16 user contexts, we will have 7 sbufs
6191 * per context, so reduce the update threshold to match. We
6192 * want to update before we actually run out, at low pbufs/ctxt
6193 * so give ourselves some margin.
6194 */
6195 if (dd->pbufsctxt >= 2 && dd->pbufsctxt - 2 < updthresh)
6196 updthresh = dd->pbufsctxt - 2;
6197 dd->cspec->updthresh_dflt = updthresh;
6198 dd->cspec->updthresh = updthresh;
6199
6200 /* before full enable, no interrupts, no locking needed */
6201 dd->sendctrl |= ((updthresh & SYM_RMASK(SendCtrl, AvailUpdThld))
6202 << SYM_LSB(SendCtrl, AvailUpdThld)) |
6203 SYM_MASK(SendCtrl, SendBufAvailPad64Byte);
6204
6205 dd->psxmitwait_supported = 1;
6206 dd->psxmitwait_check_rate = QIB_7322_PSXMITWAIT_CHECK_RATE;
6207 bail:
6208 if (!dd->ctxtcnt)
6209 dd->ctxtcnt = 1; /* for other initialization code */
6210
6211 return ret;
6212 }
6213
6214 static u32 __iomem *qib_7322_getsendbuf(struct qib_pportdata *ppd, u64 pbc,
6215 u32 *pbufnum)
6216 {
6217 u32 first, last, plen = pbc & QIB_PBC_LENGTH_MASK;
6218 struct qib_devdata *dd = ppd->dd;
6219
6220 /* last is same for 2k and 4k, because we use 4k if all 2k busy */
6221 if (pbc & PBC_7322_VL15_SEND) {
6222 first = dd->piobcnt2k + dd->piobcnt4k + ppd->hw_pidx;
6223 last = first;
6224 } else {
6225 if ((plen + 1) > dd->piosize2kmax_dwords)
6226 first = dd->piobcnt2k;
6227 else
6228 first = 0;
6229 last = dd->cspec->lastbuf_for_pio;
6230 }
6231 return qib_getsendbuf_range(dd, pbufnum, first, last);
6232 }
6233
6234 static void qib_set_cntr_7322_sample(struct qib_pportdata *ppd, u32 intv,
6235 u32 start)
6236 {
6237 qib_write_kreg_port(ppd, krp_psinterval, intv);
6238 qib_write_kreg_port(ppd, krp_psstart, start);
6239 }
6240
6241 /*
6242 * Must be called with sdma_lock held, or before init finished.
6243 */
6244 static void qib_sdma_set_7322_desc_cnt(struct qib_pportdata *ppd, unsigned cnt)
6245 {
6246 qib_write_kreg_port(ppd, krp_senddmadesccnt, cnt);
6247 }
6248
6249 static struct sdma_set_state_action sdma_7322_action_table[] = {
6250 [qib_sdma_state_s00_hw_down] = {
6251 .go_s99_running_tofalse = 1,
6252 .op_enable = 0,
6253 .op_intenable = 0,
6254 .op_halt = 0,
6255 .op_drain = 0,
6256 },
6257 [qib_sdma_state_s10_hw_start_up_wait] = {
6258 .op_enable = 0,
6259 .op_intenable = 1,
6260 .op_halt = 1,
6261 .op_drain = 0,
6262 },
6263 [qib_sdma_state_s20_idle] = {
6264 .op_enable = 1,
6265 .op_intenable = 1,
6266 .op_halt = 1,
6267 .op_drain = 0,
6268 },
6269 [qib_sdma_state_s30_sw_clean_up_wait] = {
6270 .op_enable = 0,
6271 .op_intenable = 1,
6272 .op_halt = 1,
6273 .op_drain = 0,
6274 },
6275 [qib_sdma_state_s40_hw_clean_up_wait] = {
6276 .op_enable = 1,
6277 .op_intenable = 1,
6278 .op_halt = 1,
6279 .op_drain = 0,
6280 },
6281 [qib_sdma_state_s50_hw_halt_wait] = {
6282 .op_enable = 1,
6283 .op_intenable = 1,
6284 .op_halt = 1,
6285 .op_drain = 1,
6286 },
6287 [qib_sdma_state_s99_running] = {
6288 .op_enable = 1,
6289 .op_intenable = 1,
6290 .op_halt = 0,
6291 .op_drain = 0,
6292 .go_s99_running_totrue = 1,
6293 },
6294 };
6295
6296 static void qib_7322_sdma_init_early(struct qib_pportdata *ppd)
6297 {
6298 ppd->sdma_state.set_state_action = sdma_7322_action_table;
6299 }
6300
6301 static int init_sdma_7322_regs(struct qib_pportdata *ppd)
6302 {
6303 struct qib_devdata *dd = ppd->dd;
6304 unsigned lastbuf, erstbuf;
6305 u64 senddmabufmask[3] = { 0 };
6306 int n, ret = 0;
6307
6308 qib_write_kreg_port(ppd, krp_senddmabase, ppd->sdma_descq_phys);
6309 qib_sdma_7322_setlengen(ppd);
6310 qib_sdma_update_7322_tail(ppd, 0); /* Set SendDmaTail */
6311 qib_write_kreg_port(ppd, krp_senddmareloadcnt, sdma_idle_cnt);
6312 qib_write_kreg_port(ppd, krp_senddmadesccnt, 0);
6313 qib_write_kreg_port(ppd, krp_senddmaheadaddr, ppd->sdma_head_phys);
6314
6315 if (dd->num_pports)
6316 n = dd->cspec->sdmabufcnt / dd->num_pports; /* no remainder */
6317 else
6318 n = dd->cspec->sdmabufcnt; /* failsafe for init */
6319 erstbuf = (dd->piobcnt2k + dd->piobcnt4k) -
6320 ((dd->num_pports == 1 || ppd->port == 2) ? n :
6321 dd->cspec->sdmabufcnt);
6322 lastbuf = erstbuf + n;
6323
6324 ppd->sdma_state.first_sendbuf = erstbuf;
6325 ppd->sdma_state.last_sendbuf = lastbuf;
6326 for (; erstbuf < lastbuf; ++erstbuf) {
6327 unsigned word = erstbuf / BITS_PER_LONG;
6328 unsigned bit = erstbuf & (BITS_PER_LONG - 1);
6329
6330 BUG_ON(word >= 3);
6331 senddmabufmask[word] |= 1ULL << bit;
6332 }
6333 qib_write_kreg_port(ppd, krp_senddmabufmask0, senddmabufmask[0]);
6334 qib_write_kreg_port(ppd, krp_senddmabufmask1, senddmabufmask[1]);
6335 qib_write_kreg_port(ppd, krp_senddmabufmask2, senddmabufmask[2]);
6336 return ret;
6337 }
6338
6339 /* sdma_lock must be held */
6340 static u16 qib_sdma_7322_gethead(struct qib_pportdata *ppd)
6341 {
6342 struct qib_devdata *dd = ppd->dd;
6343 int sane;
6344 int use_dmahead;
6345 u16 swhead;
6346 u16 swtail;
6347 u16 cnt;
6348 u16 hwhead;
6349
6350 use_dmahead = __qib_sdma_running(ppd) &&
6351 (dd->flags & QIB_HAS_SDMA_TIMEOUT);
6352 retry:
6353 hwhead = use_dmahead ?
6354 (u16) le64_to_cpu(*ppd->sdma_head_dma) :
6355 (u16) qib_read_kreg_port(ppd, krp_senddmahead);
6356
6357 swhead = ppd->sdma_descq_head;
6358 swtail = ppd->sdma_descq_tail;
6359 cnt = ppd->sdma_descq_cnt;
6360
6361 if (swhead < swtail)
6362 /* not wrapped */
6363 sane = (hwhead >= swhead) & (hwhead <= swtail);
6364 else if (swhead > swtail)
6365 /* wrapped around */
6366 sane = ((hwhead >= swhead) && (hwhead < cnt)) ||
6367 (hwhead <= swtail);
6368 else
6369 /* empty */
6370 sane = (hwhead == swhead);
6371
6372 if (unlikely(!sane)) {
6373 if (use_dmahead) {
6374 /* try one more time, directly from the register */
6375 use_dmahead = 0;
6376 goto retry;
6377 }
6378 /* proceed as if no progress */
6379 hwhead = swhead;
6380 }
6381
6382 return hwhead;
6383 }
6384
6385 static int qib_sdma_7322_busy(struct qib_pportdata *ppd)
6386 {
6387 u64 hwstatus = qib_read_kreg_port(ppd, krp_senddmastatus);
6388
6389 return (hwstatus & SYM_MASK(SendDmaStatus_0, ScoreBoardDrainInProg)) ||
6390 (hwstatus & SYM_MASK(SendDmaStatus_0, HaltInProg)) ||
6391 !(hwstatus & SYM_MASK(SendDmaStatus_0, InternalSDmaHalt)) ||
6392 !(hwstatus & SYM_MASK(SendDmaStatus_0, ScbEmpty));
6393 }
6394
6395 /*
6396 * Compute the amount of delay before sending the next packet if the
6397 * port's send rate differs from the static rate set for the QP.
6398 * The delay affects the next packet and the amount of the delay is
6399 * based on the length of the this packet.
6400 */
6401 static u32 qib_7322_setpbc_control(struct qib_pportdata *ppd, u32 plen,
6402 u8 srate, u8 vl)
6403 {
6404 u8 snd_mult = ppd->delay_mult;
6405 u8 rcv_mult = ib_rate_to_delay[srate];
6406 u32 ret;
6407
6408 ret = rcv_mult > snd_mult ? ((plen + 1) >> 1) * snd_mult : 0;
6409
6410 /* Indicate VL15, else set the VL in the control word */
6411 if (vl == 15)
6412 ret |= PBC_7322_VL15_SEND_CTRL;
6413 else
6414 ret |= vl << PBC_VL_NUM_LSB;
6415 ret |= ((u32)(ppd->hw_pidx)) << PBC_PORT_SEL_LSB;
6416
6417 return ret;
6418 }
6419
6420 /*
6421 * Enable the per-port VL15 send buffers for use.
6422 * They follow the rest of the buffers, without a config parameter.
6423 * This was in initregs, but that is done before the shadow
6424 * is set up, and this has to be done after the shadow is
6425 * set up.
6426 */
6427 static void qib_7322_initvl15_bufs(struct qib_devdata *dd)
6428 {
6429 unsigned vl15bufs;
6430
6431 vl15bufs = dd->piobcnt2k + dd->piobcnt4k;
6432 qib_chg_pioavailkernel(dd, vl15bufs, NUM_VL15_BUFS,
6433 TXCHK_CHG_TYPE_KERN, NULL);
6434 }
6435
6436 static void qib_7322_init_ctxt(struct qib_ctxtdata *rcd)
6437 {
6438 if (rcd->ctxt < NUM_IB_PORTS) {
6439 if (rcd->dd->num_pports > 1) {
6440 rcd->rcvegrcnt = KCTXT0_EGRCNT / 2;
6441 rcd->rcvegr_tid_base = rcd->ctxt ? rcd->rcvegrcnt : 0;
6442 } else {
6443 rcd->rcvegrcnt = KCTXT0_EGRCNT;
6444 rcd->rcvegr_tid_base = 0;
6445 }
6446 } else {
6447 rcd->rcvegrcnt = rcd->dd->cspec->rcvegrcnt;
6448 rcd->rcvegr_tid_base = KCTXT0_EGRCNT +
6449 (rcd->ctxt - NUM_IB_PORTS) * rcd->rcvegrcnt;
6450 }
6451 }
6452
6453 #define QTXSLEEPS 5000
6454 static void qib_7322_txchk_change(struct qib_devdata *dd, u32 start,
6455 u32 len, u32 which, struct qib_ctxtdata *rcd)
6456 {
6457 int i;
6458 const int last = start + len - 1;
6459 const int lastr = last / BITS_PER_LONG;
6460 u32 sleeps = 0;
6461 int wait = rcd != NULL;
6462 unsigned long flags;
6463
6464 while (wait) {
6465 unsigned long shadow;
6466 int cstart, previ = -1;
6467
6468 /*
6469 * when flipping from kernel to user, we can't change
6470 * the checking type if the buffer is allocated to the
6471 * driver. It's OK the other direction, because it's
6472 * from close, and we have just disarm'ed all the
6473 * buffers. All the kernel to kernel changes are also
6474 * OK.
6475 */
6476 for (cstart = start; cstart <= last; cstart++) {
6477 i = ((2 * cstart) + QLOGIC_IB_SENDPIOAVAIL_BUSY_SHIFT)
6478 / BITS_PER_LONG;
6479 if (i != previ) {
6480 shadow = (unsigned long)
6481 le64_to_cpu(dd->pioavailregs_dma[i]);
6482 previ = i;
6483 }
6484 if (test_bit(((2 * cstart) +
6485 QLOGIC_IB_SENDPIOAVAIL_BUSY_SHIFT)
6486 % BITS_PER_LONG, &shadow))
6487 break;
6488 }
6489
6490 if (cstart > last)
6491 break;
6492
6493 if (sleeps == QTXSLEEPS)
6494 break;
6495 /* make sure we see an updated copy next time around */
6496 sendctrl_7322_mod(dd->pport, QIB_SENDCTRL_AVAIL_BLIP);
6497 sleeps++;
6498 msleep(1);
6499 }
6500
6501 switch (which) {
6502 case TXCHK_CHG_TYPE_DIS1:
6503 /*
6504 * disable checking on a range; used by diags; just
6505 * one buffer, but still written generically
6506 */
6507 for (i = start; i <= last; i++)
6508 clear_bit(i, dd->cspec->sendchkenable);
6509 break;
6510
6511 case TXCHK_CHG_TYPE_ENAB1:
6512 /*
6513 * (re)enable checking on a range; used by diags; just
6514 * one buffer, but still written generically; read
6515 * scratch to be sure buffer actually triggered, not
6516 * just flushed from processor.
6517 */
6518 qib_read_kreg32(dd, kr_scratch);
6519 for (i = start; i <= last; i++)
6520 set_bit(i, dd->cspec->sendchkenable);
6521 break;
6522
6523 case TXCHK_CHG_TYPE_KERN:
6524 /* usable by kernel */
6525 for (i = start; i <= last; i++) {
6526 set_bit(i, dd->cspec->sendibchk);
6527 clear_bit(i, dd->cspec->sendgrhchk);
6528 }
6529 spin_lock_irqsave(&dd->uctxt_lock, flags);
6530 /* see if we need to raise avail update threshold */
6531 for (i = dd->first_user_ctxt;
6532 dd->cspec->updthresh != dd->cspec->updthresh_dflt
6533 && i < dd->cfgctxts; i++)
6534 if (dd->rcd[i] && dd->rcd[i]->subctxt_cnt &&
6535 ((dd->rcd[i]->piocnt / dd->rcd[i]->subctxt_cnt) - 1)
6536 < dd->cspec->updthresh_dflt)
6537 break;
6538 spin_unlock_irqrestore(&dd->uctxt_lock, flags);
6539 if (i == dd->cfgctxts) {
6540 spin_lock_irqsave(&dd->sendctrl_lock, flags);
6541 dd->cspec->updthresh = dd->cspec->updthresh_dflt;
6542 dd->sendctrl &= ~SYM_MASK(SendCtrl, AvailUpdThld);
6543 dd->sendctrl |= (dd->cspec->updthresh &
6544 SYM_RMASK(SendCtrl, AvailUpdThld)) <<
6545 SYM_LSB(SendCtrl, AvailUpdThld);
6546 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
6547 sendctrl_7322_mod(dd->pport, QIB_SENDCTRL_AVAIL_BLIP);
6548 }
6549 break;
6550
6551 case TXCHK_CHG_TYPE_USER:
6552 /* for user process */
6553 for (i = start; i <= last; i++) {
6554 clear_bit(i, dd->cspec->sendibchk);
6555 set_bit(i, dd->cspec->sendgrhchk);
6556 }
6557 spin_lock_irqsave(&dd->sendctrl_lock, flags);
6558 if (rcd && rcd->subctxt_cnt && ((rcd->piocnt
6559 / rcd->subctxt_cnt) - 1) < dd->cspec->updthresh) {
6560 dd->cspec->updthresh = (rcd->piocnt /
6561 rcd->subctxt_cnt) - 1;
6562 dd->sendctrl &= ~SYM_MASK(SendCtrl, AvailUpdThld);
6563 dd->sendctrl |= (dd->cspec->updthresh &
6564 SYM_RMASK(SendCtrl, AvailUpdThld))
6565 << SYM_LSB(SendCtrl, AvailUpdThld);
6566 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
6567 sendctrl_7322_mod(dd->pport, QIB_SENDCTRL_AVAIL_BLIP);
6568 } else
6569 spin_unlock_irqrestore(&dd->sendctrl_lock, flags);
6570 break;
6571
6572 default:
6573 break;
6574 }
6575
6576 for (i = start / BITS_PER_LONG; which >= 2 && i <= lastr; ++i)
6577 qib_write_kreg(dd, kr_sendcheckmask + i,
6578 dd->cspec->sendchkenable[i]);
6579
6580 for (i = start / BITS_PER_LONG; which < 2 && i <= lastr; ++i) {
6581 qib_write_kreg(dd, kr_sendgrhcheckmask + i,
6582 dd->cspec->sendgrhchk[i]);
6583 qib_write_kreg(dd, kr_sendibpktmask + i,
6584 dd->cspec->sendibchk[i]);
6585 }
6586
6587 /*
6588 * Be sure whatever we did was seen by the chip and acted upon,
6589 * before we return. Mostly important for which >= 2.
6590 */
6591 qib_read_kreg32(dd, kr_scratch);
6592 }
6593
6594
6595 /* useful for trigger analyzers, etc. */
6596 static void writescratch(struct qib_devdata *dd, u32 val)
6597 {
6598 qib_write_kreg(dd, kr_scratch, val);
6599 }
6600
6601 /* Dummy for now, use chip regs soon */
6602 static int qib_7322_tempsense_rd(struct qib_devdata *dd, int regnum)
6603 {
6604 return -ENXIO;
6605 }
6606
6607 /**
6608 * qib_init_iba7322_funcs - set up the chip-specific function pointers
6609 * @dev: the pci_dev for qlogic_ib device
6610 * @ent: pci_device_id struct for this dev
6611 *
6612 * Also allocates, inits, and returns the devdata struct for this
6613 * device instance
6614 *
6615 * This is global, and is called directly at init to set up the
6616 * chip-specific function pointers for later use.
6617 */
6618 struct qib_devdata *qib_init_iba7322_funcs(struct pci_dev *pdev,
6619 const struct pci_device_id *ent)
6620 {
6621 struct qib_devdata *dd;
6622 int ret, i;
6623 u32 tabsize, actual_cnt = 0;
6624
6625 dd = qib_alloc_devdata(pdev,
6626 NUM_IB_PORTS * sizeof(struct qib_pportdata) +
6627 sizeof(struct qib_chip_specific) +
6628 NUM_IB_PORTS * sizeof(struct qib_chippport_specific));
6629 if (IS_ERR(dd))
6630 goto bail;
6631
6632 dd->f_bringup_serdes = qib_7322_bringup_serdes;
6633 dd->f_cleanup = qib_setup_7322_cleanup;
6634 dd->f_clear_tids = qib_7322_clear_tids;
6635 dd->f_free_irq = qib_7322_free_irq;
6636 dd->f_get_base_info = qib_7322_get_base_info;
6637 dd->f_get_msgheader = qib_7322_get_msgheader;
6638 dd->f_getsendbuf = qib_7322_getsendbuf;
6639 dd->f_gpio_mod = gpio_7322_mod;
6640 dd->f_eeprom_wen = qib_7322_eeprom_wen;
6641 dd->f_hdrqempty = qib_7322_hdrqempty;
6642 dd->f_ib_updown = qib_7322_ib_updown;
6643 dd->f_init_ctxt = qib_7322_init_ctxt;
6644 dd->f_initvl15_bufs = qib_7322_initvl15_bufs;
6645 dd->f_intr_fallback = qib_7322_intr_fallback;
6646 dd->f_late_initreg = qib_late_7322_initreg;
6647 dd->f_setpbc_control = qib_7322_setpbc_control;
6648 dd->f_portcntr = qib_portcntr_7322;
6649 dd->f_put_tid = qib_7322_put_tid;
6650 dd->f_quiet_serdes = qib_7322_mini_quiet_serdes;
6651 dd->f_rcvctrl = rcvctrl_7322_mod;
6652 dd->f_read_cntrs = qib_read_7322cntrs;
6653 dd->f_read_portcntrs = qib_read_7322portcntrs;
6654 dd->f_reset = qib_do_7322_reset;
6655 dd->f_init_sdma_regs = init_sdma_7322_regs;
6656 dd->f_sdma_busy = qib_sdma_7322_busy;
6657 dd->f_sdma_gethead = qib_sdma_7322_gethead;
6658 dd->f_sdma_sendctrl = qib_7322_sdma_sendctrl;
6659 dd->f_sdma_set_desc_cnt = qib_sdma_set_7322_desc_cnt;
6660 dd->f_sdma_update_tail = qib_sdma_update_7322_tail;
6661 dd->f_sendctrl = sendctrl_7322_mod;
6662 dd->f_set_armlaunch = qib_set_7322_armlaunch;
6663 dd->f_set_cntr_sample = qib_set_cntr_7322_sample;
6664 dd->f_iblink_state = qib_7322_iblink_state;
6665 dd->f_ibphys_portstate = qib_7322_phys_portstate;
6666 dd->f_get_ib_cfg = qib_7322_get_ib_cfg;
6667 dd->f_set_ib_cfg = qib_7322_set_ib_cfg;
6668 dd->f_set_ib_loopback = qib_7322_set_loopback;
6669 dd->f_get_ib_table = qib_7322_get_ib_table;
6670 dd->f_set_ib_table = qib_7322_set_ib_table;
6671 dd->f_set_intr_state = qib_7322_set_intr_state;
6672 dd->f_setextled = qib_setup_7322_setextled;
6673 dd->f_txchk_change = qib_7322_txchk_change;
6674 dd->f_update_usrhead = qib_update_7322_usrhead;
6675 dd->f_wantpiobuf_intr = qib_wantpiobuf_7322_intr;
6676 dd->f_xgxs_reset = qib_7322_mini_pcs_reset;
6677 dd->f_sdma_hw_clean_up = qib_7322_sdma_hw_clean_up;
6678 dd->f_sdma_hw_start_up = qib_7322_sdma_hw_start_up;
6679 dd->f_sdma_init_early = qib_7322_sdma_init_early;
6680 dd->f_writescratch = writescratch;
6681 dd->f_tempsense_rd = qib_7322_tempsense_rd;
6682 /*
6683 * Do remaining PCIe setup and save PCIe values in dd.
6684 * Any error printing is already done by the init code.
6685 * On return, we have the chip mapped, but chip registers
6686 * are not set up until start of qib_init_7322_variables.
6687 */
6688 ret = qib_pcie_ddinit(dd, pdev, ent);
6689 if (ret < 0)
6690 goto bail_free;
6691
6692 /* initialize chip-specific variables */
6693 ret = qib_init_7322_variables(dd);
6694 if (ret)
6695 goto bail_cleanup;
6696
6697 if (qib_mini_init || !dd->num_pports)
6698 goto bail;
6699
6700 /*
6701 * Determine number of vectors we want; depends on port count
6702 * and number of configured kernel receive queues actually used.
6703 * Should also depend on whether sdma is enabled or not, but
6704 * that's such a rare testing case it's not worth worrying about.
6705 */
6706 tabsize = dd->first_user_ctxt + ARRAY_SIZE(irq_table);
6707 for (i = 0; i < tabsize; i++)
6708 if ((i < ARRAY_SIZE(irq_table) &&
6709 irq_table[i].port <= dd->num_pports) ||
6710 (i >= ARRAY_SIZE(irq_table) &&
6711 dd->rcd[i - ARRAY_SIZE(irq_table)]))
6712 actual_cnt++;
6713 tabsize = actual_cnt;
6714 dd->cspec->msix_entries = kmalloc(tabsize *
6715 sizeof(struct msix_entry), GFP_KERNEL);
6716 dd->cspec->msix_arg = kmalloc(tabsize *
6717 sizeof(void *), GFP_KERNEL);
6718 if (!dd->cspec->msix_entries || !dd->cspec->msix_arg) {
6719 qib_dev_err(dd, "No memory for MSIx table\n");
6720 tabsize = 0;
6721 }
6722 for (i = 0; i < tabsize; i++)
6723 dd->cspec->msix_entries[i].entry = i;
6724
6725 if (qib_pcie_params(dd, 8, &tabsize, dd->cspec->msix_entries))
6726 qib_dev_err(dd, "Failed to setup PCIe or interrupts; "
6727 "continuing anyway\n");
6728 /* may be less than we wanted, if not enough available */
6729 dd->cspec->num_msix_entries = tabsize;
6730
6731 /* setup interrupt handler */
6732 qib_setup_7322_interrupt(dd, 1);
6733
6734 /* clear diagctrl register, in case diags were running and crashed */
6735 qib_write_kreg(dd, kr_hwdiagctrl, 0);
6736
6737 goto bail;
6738
6739 bail_cleanup:
6740 qib_pcie_ddcleanup(dd);
6741 bail_free:
6742 qib_free_devdata(dd);
6743 dd = ERR_PTR(ret);
6744 bail:
6745 return dd;
6746 }
6747
6748 /*
6749 * Set the table entry at the specified index from the table specifed.
6750 * There are 3 * TXDDS_TABLE_SZ entries in all per port, with the first
6751 * TXDDS_TABLE_SZ for SDR, the next for DDR, and the last for QDR.
6752 * 'idx' below addresses the correct entry, while its 4 LSBs select the
6753 * corresponding entry (one of TXDDS_TABLE_SZ) from the selected table.
6754 */
6755 #define DDS_ENT_AMP_LSB 14
6756 #define DDS_ENT_MAIN_LSB 9
6757 #define DDS_ENT_POST_LSB 5
6758 #define DDS_ENT_PRE_XTRA_LSB 3
6759 #define DDS_ENT_PRE_LSB 0
6760
6761 /*
6762 * Set one entry in the TxDDS table for spec'd port
6763 * ridx picks one of the entries, while tp points
6764 * to the appropriate table entry.
6765 */
6766 static void set_txdds(struct qib_pportdata *ppd, int ridx,
6767 const struct txdds_ent *tp)
6768 {
6769 struct qib_devdata *dd = ppd->dd;
6770 u32 pack_ent;
6771 int regidx;
6772
6773 /* Get correct offset in chip-space, and in source table */
6774 regidx = KREG_IBPORT_IDX(IBSD_DDS_MAP_TABLE) + ridx;
6775 /*
6776 * We do not use qib_write_kreg_port() because it was intended
6777 * only for registers in the lower "port specific" pages.
6778 * So do index calculation by hand.
6779 */
6780 if (ppd->hw_pidx)
6781 regidx += (dd->palign / sizeof(u64));
6782
6783 pack_ent = tp->amp << DDS_ENT_AMP_LSB;
6784 pack_ent |= tp->main << DDS_ENT_MAIN_LSB;
6785 pack_ent |= tp->pre << DDS_ENT_PRE_LSB;
6786 pack_ent |= tp->post << DDS_ENT_POST_LSB;
6787 qib_write_kreg(dd, regidx, pack_ent);
6788 /* Prevent back-to-back writes by hitting scratch */
6789 qib_write_kreg(ppd->dd, kr_scratch, 0);
6790 }
6791
6792 static const struct vendor_txdds_ent vendor_txdds[] = {
6793 { /* Amphenol 1m 30awg NoEq */
6794 { 0x41, 0x50, 0x48 }, "584470002 ",
6795 { 10, 0, 0, 5 }, { 10, 0, 0, 9 }, { 7, 1, 0, 13 },
6796 },
6797 { /* Amphenol 3m 28awg NoEq */
6798 { 0x41, 0x50, 0x48 }, "584470004 ",
6799 { 0, 0, 0, 8 }, { 0, 0, 0, 11 }, { 0, 1, 7, 15 },
6800 },
6801 { /* Finisar 3m OM2 Optical */
6802 { 0x00, 0x90, 0x65 }, "FCBG410QB1C03-QL",
6803 { 0, 0, 0, 3 }, { 0, 0, 0, 4 }, { 0, 0, 0, 13 },
6804 },
6805 { /* Finisar 30m OM2 Optical */
6806 { 0x00, 0x90, 0x65 }, "FCBG410QB1C30-QL",
6807 { 0, 0, 0, 1 }, { 0, 0, 0, 5 }, { 0, 0, 0, 11 },
6808 },
6809 { /* Finisar Default OM2 Optical */
6810 { 0x00, 0x90, 0x65 }, NULL,
6811 { 0, 0, 0, 2 }, { 0, 0, 0, 5 }, { 0, 0, 0, 12 },
6812 },
6813 { /* Gore 1m 30awg NoEq */
6814 { 0x00, 0x21, 0x77 }, "QSN3300-1 ",
6815 { 0, 0, 0, 6 }, { 0, 0, 0, 9 }, { 0, 1, 0, 15 },
6816 },
6817 { /* Gore 2m 30awg NoEq */
6818 { 0x00, 0x21, 0x77 }, "QSN3300-2 ",
6819 { 0, 0, 0, 8 }, { 0, 0, 0, 10 }, { 0, 1, 7, 15 },
6820 },
6821 { /* Gore 1m 28awg NoEq */
6822 { 0x00, 0x21, 0x77 }, "QSN3800-1 ",
6823 { 0, 0, 0, 6 }, { 0, 0, 0, 8 }, { 0, 1, 0, 15 },
6824 },
6825 { /* Gore 3m 28awg NoEq */
6826 { 0x00, 0x21, 0x77 }, "QSN3800-3 ",
6827 { 0, 0, 0, 9 }, { 0, 0, 0, 13 }, { 0, 1, 7, 15 },
6828 },
6829 { /* Gore 5m 24awg Eq */
6830 { 0x00, 0x21, 0x77 }, "QSN7000-5 ",
6831 { 0, 0, 0, 7 }, { 0, 0, 0, 9 }, { 0, 1, 3, 15 },
6832 },
6833 { /* Gore 7m 24awg Eq */
6834 { 0x00, 0x21, 0x77 }, "QSN7000-7 ",
6835 { 0, 0, 0, 9 }, { 0, 0, 0, 11 }, { 0, 2, 6, 15 },
6836 },
6837 { /* Gore 5m 26awg Eq */
6838 { 0x00, 0x21, 0x77 }, "QSN7600-5 ",
6839 { 0, 0, 0, 8 }, { 0, 0, 0, 11 }, { 0, 1, 9, 13 },
6840 },
6841 { /* Gore 7m 26awg Eq */
6842 { 0x00, 0x21, 0x77 }, "QSN7600-7 ",
6843 { 0, 0, 0, 8 }, { 0, 0, 0, 11 }, { 10, 1, 8, 15 },
6844 },
6845 { /* Intersil 12m 24awg Active */
6846 { 0x00, 0x30, 0xB4 }, "QLX4000CQSFP1224",
6847 { 0, 0, 0, 2 }, { 0, 0, 0, 5 }, { 0, 3, 0, 9 },
6848 },
6849 { /* Intersil 10m 28awg Active */
6850 { 0x00, 0x30, 0xB4 }, "QLX4000CQSFP1028",
6851 { 0, 0, 0, 6 }, { 0, 0, 0, 4 }, { 0, 2, 0, 2 },
6852 },
6853 { /* Intersil 7m 30awg Active */
6854 { 0x00, 0x30, 0xB4 }, "QLX4000CQSFP0730",
6855 { 0, 0, 0, 6 }, { 0, 0, 0, 4 }, { 0, 1, 0, 3 },
6856 },
6857 { /* Intersil 5m 32awg Active */
6858 { 0x00, 0x30, 0xB4 }, "QLX4000CQSFP0532",
6859 { 0, 0, 0, 6 }, { 0, 0, 0, 6 }, { 0, 2, 0, 8 },
6860 },
6861 { /* Intersil Default Active */
6862 { 0x00, 0x30, 0xB4 }, NULL,
6863 { 0, 0, 0, 6 }, { 0, 0, 0, 5 }, { 0, 2, 0, 5 },
6864 },
6865 { /* Luxtera 20m Active Optical */
6866 { 0x00, 0x25, 0x63 }, NULL,
6867 { 0, 0, 0, 5 }, { 0, 0, 0, 8 }, { 0, 2, 0, 12 },
6868 },
6869 { /* Molex 1M Cu loopback */
6870 { 0x00, 0x09, 0x3A }, "74763-0025 ",
6871 { 2, 2, 6, 15 }, { 2, 2, 6, 15 }, { 2, 2, 6, 15 },
6872 },
6873 { /* Molex 2m 28awg NoEq */
6874 { 0x00, 0x09, 0x3A }, "74757-2201 ",
6875 { 0, 0, 0, 6 }, { 0, 0, 0, 9 }, { 0, 1, 1, 15 },
6876 },
6877 };
6878
6879 static const struct txdds_ent txdds_sdr[TXDDS_TABLE_SZ] = {
6880 /* amp, pre, main, post */
6881 { 2, 2, 15, 6 }, /* Loopback */
6882 { 0, 0, 0, 1 }, /* 2 dB */
6883 { 0, 0, 0, 2 }, /* 3 dB */
6884 { 0, 0, 0, 3 }, /* 4 dB */
6885 { 0, 0, 0, 4 }, /* 5 dB */
6886 { 0, 0, 0, 5 }, /* 6 dB */
6887 { 0, 0, 0, 6 }, /* 7 dB */
6888 { 0, 0, 0, 7 }, /* 8 dB */
6889 { 0, 0, 0, 8 }, /* 9 dB */
6890 { 0, 0, 0, 9 }, /* 10 dB */
6891 { 0, 0, 0, 10 }, /* 11 dB */
6892 { 0, 0, 0, 11 }, /* 12 dB */
6893 { 0, 0, 0, 12 }, /* 13 dB */
6894 { 0, 0, 0, 13 }, /* 14 dB */
6895 { 0, 0, 0, 14 }, /* 15 dB */
6896 { 0, 0, 0, 15 }, /* 16 dB */
6897 };
6898
6899 static const struct txdds_ent txdds_ddr[TXDDS_TABLE_SZ] = {
6900 /* amp, pre, main, post */
6901 { 2, 2, 15, 6 }, /* Loopback */
6902 { 0, 0, 0, 8 }, /* 2 dB */
6903 { 0, 0, 0, 8 }, /* 3 dB */
6904 { 0, 0, 0, 9 }, /* 4 dB */
6905 { 0, 0, 0, 9 }, /* 5 dB */
6906 { 0, 0, 0, 10 }, /* 6 dB */
6907 { 0, 0, 0, 10 }, /* 7 dB */
6908 { 0, 0, 0, 11 }, /* 8 dB */
6909 { 0, 0, 0, 11 }, /* 9 dB */
6910 { 0, 0, 0, 12 }, /* 10 dB */
6911 { 0, 0, 0, 12 }, /* 11 dB */
6912 { 0, 0, 0, 13 }, /* 12 dB */
6913 { 0, 0, 0, 13 }, /* 13 dB */
6914 { 0, 0, 0, 14 }, /* 14 dB */
6915 { 0, 0, 0, 14 }, /* 15 dB */
6916 { 0, 0, 0, 15 }, /* 16 dB */
6917 };
6918
6919 static const struct txdds_ent txdds_qdr[TXDDS_TABLE_SZ] = {
6920 /* amp, pre, main, post */
6921 { 2, 2, 15, 6 }, /* Loopback */
6922 { 0, 1, 0, 7 }, /* 2 dB (also QMH7342) */
6923 { 0, 1, 0, 9 }, /* 3 dB (also QMH7342) */
6924 { 0, 1, 0, 11 }, /* 4 dB */
6925 { 0, 1, 0, 13 }, /* 5 dB */
6926 { 0, 1, 0, 15 }, /* 6 dB */
6927 { 0, 1, 3, 15 }, /* 7 dB */
6928 { 0, 1, 7, 15 }, /* 8 dB */
6929 { 0, 1, 7, 15 }, /* 9 dB */
6930 { 0, 1, 8, 15 }, /* 10 dB */
6931 { 0, 1, 9, 15 }, /* 11 dB */
6932 { 0, 1, 10, 15 }, /* 12 dB */
6933 { 0, 2, 6, 15 }, /* 13 dB */
6934 { 0, 2, 7, 15 }, /* 14 dB */
6935 { 0, 2, 8, 15 }, /* 15 dB */
6936 { 0, 2, 9, 15 }, /* 16 dB */
6937 };
6938
6939 /*
6940 * extra entries for use with txselect, for indices >= TXDDS_TABLE_SZ.
6941 * These are mostly used for mez cards going through connectors
6942 * and backplane traces, but can be used to add other "unusual"
6943 * table values as well.
6944 */
6945 static const struct txdds_ent txdds_extra_sdr[TXDDS_EXTRA_SZ] = {
6946 /* amp, pre, main, post */
6947 { 0, 0, 0, 1 }, /* QMH7342 backplane settings */
6948 { 0, 0, 0, 1 }, /* QMH7342 backplane settings */
6949 { 0, 0, 0, 2 }, /* QMH7342 backplane settings */
6950 { 0, 0, 0, 2 }, /* QMH7342 backplane settings */
6951 { 0, 0, 0, 11 }, /* QME7342 backplane settings */
6952 { 0, 0, 0, 11 }, /* QME7342 backplane settings */
6953 { 0, 0, 0, 11 }, /* QME7342 backplane settings */
6954 { 0, 0, 0, 11 }, /* QME7342 backplane settings */
6955 { 0, 0, 0, 11 }, /* QME7342 backplane settings */
6956 { 0, 0, 0, 11 }, /* QME7342 backplane settings */
6957 { 0, 0, 0, 11 }, /* QME7342 backplane settings */
6958 { 0, 0, 0, 3 }, /* QMH7342 backplane settings */
6959 { 0, 0, 0, 4 }, /* QMH7342 backplane settings */
6960 };
6961
6962 static const struct txdds_ent txdds_extra_ddr[TXDDS_EXTRA_SZ] = {
6963 /* amp, pre, main, post */
6964 { 0, 0, 0, 7 }, /* QMH7342 backplane settings */
6965 { 0, 0, 0, 7 }, /* QMH7342 backplane settings */
6966 { 0, 0, 0, 8 }, /* QMH7342 backplane settings */
6967 { 0, 0, 0, 8 }, /* QMH7342 backplane settings */
6968 { 0, 0, 0, 13 }, /* QME7342 backplane settings */
6969 { 0, 0, 0, 13 }, /* QME7342 backplane settings */
6970 { 0, 0, 0, 13 }, /* QME7342 backplane settings */
6971 { 0, 0, 0, 13 }, /* QME7342 backplane settings */
6972 { 0, 0, 0, 13 }, /* QME7342 backplane settings */
6973 { 0, 0, 0, 13 }, /* QME7342 backplane settings */
6974 { 0, 0, 0, 13 }, /* QME7342 backplane settings */
6975 { 0, 0, 0, 9 }, /* QMH7342 backplane settings */
6976 { 0, 0, 0, 10 }, /* QMH7342 backplane settings */
6977 };
6978
6979 static const struct txdds_ent txdds_extra_qdr[TXDDS_EXTRA_SZ] = {
6980 /* amp, pre, main, post */
6981 { 0, 1, 0, 4 }, /* QMH7342 backplane settings */
6982 { 0, 1, 0, 5 }, /* QMH7342 backplane settings */
6983 { 0, 1, 0, 6 }, /* QMH7342 backplane settings */
6984 { 0, 1, 0, 8 }, /* QMH7342 backplane settings */
6985 { 0, 1, 12, 10 }, /* QME7342 backplane setting */
6986 { 0, 1, 12, 11 }, /* QME7342 backplane setting */
6987 { 0, 1, 12, 12 }, /* QME7342 backplane setting */
6988 { 0, 1, 12, 14 }, /* QME7342 backplane setting */
6989 { 0, 1, 12, 6 }, /* QME7342 backplane setting */
6990 { 0, 1, 12, 7 }, /* QME7342 backplane setting */
6991 { 0, 1, 12, 8 }, /* QME7342 backplane setting */
6992 { 0, 1, 0, 10 }, /* QMH7342 backplane settings */
6993 { 0, 1, 0, 12 }, /* QMH7342 backplane settings */
6994 };
6995
6996 static const struct txdds_ent *get_atten_table(const struct txdds_ent *txdds,
6997 unsigned atten)
6998 {
6999 /*
7000 * The attenuation table starts at 2dB for entry 1,
7001 * with entry 0 being the loopback entry.
7002 */
7003 if (atten <= 2)
7004 atten = 1;
7005 else if (atten > TXDDS_TABLE_SZ)
7006 atten = TXDDS_TABLE_SZ - 1;
7007 else
7008 atten--;
7009 return txdds + atten;
7010 }
7011
7012 /*
7013 * if override is set, the module parameter txselect has a value
7014 * for this specific port, so use it, rather than our normal mechanism.
7015 */
7016 static void find_best_ent(struct qib_pportdata *ppd,
7017 const struct txdds_ent **sdr_dds,
7018 const struct txdds_ent **ddr_dds,
7019 const struct txdds_ent **qdr_dds, int override)
7020 {
7021 struct qib_qsfp_cache *qd = &ppd->cpspec->qsfp_data.cache;
7022 int idx;
7023
7024 /* Search table of known cables */
7025 for (idx = 0; !override && idx < ARRAY_SIZE(vendor_txdds); ++idx) {
7026 const struct vendor_txdds_ent *v = vendor_txdds + idx;
7027
7028 if (!memcmp(v->oui, qd->oui, QSFP_VOUI_LEN) &&
7029 (!v->partnum ||
7030 !memcmp(v->partnum, qd->partnum, QSFP_PN_LEN))) {
7031 *sdr_dds = &v->sdr;
7032 *ddr_dds = &v->ddr;
7033 *qdr_dds = &v->qdr;
7034 return;
7035 }
7036 }
7037
7038 /* Lookup serdes setting by cable type and attenuation */
7039 if (!override && QSFP_IS_ACTIVE(qd->tech)) {
7040 *sdr_dds = txdds_sdr + ppd->dd->board_atten;
7041 *ddr_dds = txdds_ddr + ppd->dd->board_atten;
7042 *qdr_dds = txdds_qdr + ppd->dd->board_atten;
7043 return;
7044 }
7045
7046 if (!override && QSFP_HAS_ATTEN(qd->tech) && (qd->atten[0] ||
7047 qd->atten[1])) {
7048 *sdr_dds = get_atten_table(txdds_sdr, qd->atten[0]);
7049 *ddr_dds = get_atten_table(txdds_ddr, qd->atten[0]);
7050 *qdr_dds = get_atten_table(txdds_qdr, qd->atten[1]);
7051 return;
7052 } else if (ppd->cpspec->no_eep < TXDDS_TABLE_SZ) {
7053 /*
7054 * If we have no (or incomplete) data from the cable
7055 * EEPROM, or no QSFP, or override is set, use the
7056 * module parameter value to index into the attentuation
7057 * table.
7058 */
7059 idx = ppd->cpspec->no_eep;
7060 *sdr_dds = &txdds_sdr[idx];
7061 *ddr_dds = &txdds_ddr[idx];
7062 *qdr_dds = &txdds_qdr[idx];
7063 } else if (ppd->cpspec->no_eep < (TXDDS_TABLE_SZ + TXDDS_EXTRA_SZ)) {
7064 /* similar to above, but index into the "extra" table. */
7065 idx = ppd->cpspec->no_eep - TXDDS_TABLE_SZ;
7066 *sdr_dds = &txdds_extra_sdr[idx];
7067 *ddr_dds = &txdds_extra_ddr[idx];
7068 *qdr_dds = &txdds_extra_qdr[idx];
7069 } else {
7070 /* this shouldn't happen, it's range checked */
7071 *sdr_dds = txdds_sdr + qib_long_atten;
7072 *ddr_dds = txdds_ddr + qib_long_atten;
7073 *qdr_dds = txdds_qdr + qib_long_atten;
7074 }
7075 }
7076
7077 static void init_txdds_table(struct qib_pportdata *ppd, int override)
7078 {
7079 const struct txdds_ent *sdr_dds, *ddr_dds, *qdr_dds;
7080 struct txdds_ent *dds;
7081 int idx;
7082 int single_ent = 0;
7083
7084 find_best_ent(ppd, &sdr_dds, &ddr_dds, &qdr_dds, override);
7085
7086 /* for mez cards or override, use the selected value for all entries */
7087 if (!(ppd->dd->flags & QIB_HAS_QSFP) || override)
7088 single_ent = 1;
7089
7090 /* Fill in the first entry with the best entry found. */
7091 set_txdds(ppd, 0, sdr_dds);
7092 set_txdds(ppd, TXDDS_TABLE_SZ, ddr_dds);
7093 set_txdds(ppd, 2 * TXDDS_TABLE_SZ, qdr_dds);
7094 if (ppd->lflags & (QIBL_LINKINIT | QIBL_LINKARMED |
7095 QIBL_LINKACTIVE)) {
7096 dds = (struct txdds_ent *)(ppd->link_speed_active ==
7097 QIB_IB_QDR ? qdr_dds :
7098 (ppd->link_speed_active ==
7099 QIB_IB_DDR ? ddr_dds : sdr_dds));
7100 write_tx_serdes_param(ppd, dds);
7101 }
7102
7103 /* Fill in the remaining entries with the default table values. */
7104 for (idx = 1; idx < ARRAY_SIZE(txdds_sdr); ++idx) {
7105 set_txdds(ppd, idx, single_ent ? sdr_dds : txdds_sdr + idx);
7106 set_txdds(ppd, idx + TXDDS_TABLE_SZ,
7107 single_ent ? ddr_dds : txdds_ddr + idx);
7108 set_txdds(ppd, idx + 2 * TXDDS_TABLE_SZ,
7109 single_ent ? qdr_dds : txdds_qdr + idx);
7110 }
7111 }
7112
7113 #define KR_AHB_ACC KREG_IDX(ahb_access_ctrl)
7114 #define KR_AHB_TRANS KREG_IDX(ahb_transaction_reg)
7115 #define AHB_TRANS_RDY SYM_MASK(ahb_transaction_reg, ahb_rdy)
7116 #define AHB_ADDR_LSB SYM_LSB(ahb_transaction_reg, ahb_address)
7117 #define AHB_DATA_LSB SYM_LSB(ahb_transaction_reg, ahb_data)
7118 #define AHB_WR SYM_MASK(ahb_transaction_reg, write_not_read)
7119 #define AHB_TRANS_TRIES 10
7120
7121 /*
7122 * The chan argument is 0=chan0, 1=chan1, 2=pll, 3=chan2, 4=chan4,
7123 * 5=subsystem which is why most calls have "chan + chan >> 1"
7124 * for the channel argument.
7125 */
7126 static u32 ahb_mod(struct qib_devdata *dd, int quad, int chan, int addr,
7127 u32 data, u32 mask)
7128 {
7129 u32 rd_data, wr_data, sz_mask;
7130 u64 trans, acc, prev_acc;
7131 u32 ret = 0xBAD0BAD;
7132 int tries;
7133
7134 prev_acc = qib_read_kreg64(dd, KR_AHB_ACC);
7135 /* From this point on, make sure we return access */
7136 acc = (quad << 1) | 1;
7137 qib_write_kreg(dd, KR_AHB_ACC, acc);
7138
7139 for (tries = 1; tries < AHB_TRANS_TRIES; ++tries) {
7140 trans = qib_read_kreg64(dd, KR_AHB_TRANS);
7141 if (trans & AHB_TRANS_RDY)
7142 break;
7143 }
7144 if (tries >= AHB_TRANS_TRIES) {
7145 qib_dev_err(dd, "No ahb_rdy in %d tries\n", AHB_TRANS_TRIES);
7146 goto bail;
7147 }
7148
7149 /* If mask is not all 1s, we need to read, but different SerDes
7150 * entities have different sizes
7151 */
7152 sz_mask = (1UL << ((quad == 1) ? 32 : 16)) - 1;
7153 wr_data = data & mask & sz_mask;
7154 if ((~mask & sz_mask) != 0) {
7155 trans = ((chan << 6) | addr) << (AHB_ADDR_LSB + 1);
7156 qib_write_kreg(dd, KR_AHB_TRANS, trans);
7157
7158 for (tries = 1; tries < AHB_TRANS_TRIES; ++tries) {
7159 trans = qib_read_kreg64(dd, KR_AHB_TRANS);
7160 if (trans & AHB_TRANS_RDY)
7161 break;
7162 }
7163 if (tries >= AHB_TRANS_TRIES) {
7164 qib_dev_err(dd, "No Rd ahb_rdy in %d tries\n",
7165 AHB_TRANS_TRIES);
7166 goto bail;
7167 }
7168 /* Re-read in case host split reads and read data first */
7169 trans = qib_read_kreg64(dd, KR_AHB_TRANS);
7170 rd_data = (uint32_t)(trans >> AHB_DATA_LSB);
7171 wr_data |= (rd_data & ~mask & sz_mask);
7172 }
7173
7174 /* If mask is not zero, we need to write. */
7175 if (mask & sz_mask) {
7176 trans = ((chan << 6) | addr) << (AHB_ADDR_LSB + 1);
7177 trans |= ((uint64_t)wr_data << AHB_DATA_LSB);
7178 trans |= AHB_WR;
7179 qib_write_kreg(dd, KR_AHB_TRANS, trans);
7180
7181 for (tries = 1; tries < AHB_TRANS_TRIES; ++tries) {
7182 trans = qib_read_kreg64(dd, KR_AHB_TRANS);
7183 if (trans & AHB_TRANS_RDY)
7184 break;
7185 }
7186 if (tries >= AHB_TRANS_TRIES) {
7187 qib_dev_err(dd, "No Wr ahb_rdy in %d tries\n",
7188 AHB_TRANS_TRIES);
7189 goto bail;
7190 }
7191 }
7192 ret = wr_data;
7193 bail:
7194 qib_write_kreg(dd, KR_AHB_ACC, prev_acc);
7195 return ret;
7196 }
7197
7198 static void ibsd_wr_allchans(struct qib_pportdata *ppd, int addr, unsigned data,
7199 unsigned mask)
7200 {
7201 struct qib_devdata *dd = ppd->dd;
7202 int chan;
7203 u32 rbc;
7204
7205 for (chan = 0; chan < SERDES_CHANS; ++chan) {
7206 ahb_mod(dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)), addr,
7207 data, mask);
7208 rbc = ahb_mod(dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
7209 addr, 0, 0);
7210 }
7211 }
7212
7213 static int serdes_7322_init(struct qib_pportdata *ppd)
7214 {
7215 u64 data;
7216 u32 le_val;
7217
7218 /*
7219 * Initialize the Tx DDS tables. Also done every QSFP event,
7220 * for adapters with QSFP
7221 */
7222 init_txdds_table(ppd, 0);
7223
7224 /* ensure no tx overrides from earlier driver loads */
7225 qib_write_kreg_port(ppd, krp_tx_deemph_override,
7226 SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
7227 reset_tx_deemphasis_override));
7228
7229 /* Patch some SerDes defaults to "Better for IB" */
7230 /* Timing Loop Bandwidth: cdr_timing[11:9] = 0 */
7231 ibsd_wr_allchans(ppd, 2, 0, BMASK(11, 9));
7232
7233 /* Termination: rxtermctrl_r2d addr 11 bits [12:11] = 1 */
7234 ibsd_wr_allchans(ppd, 11, (1 << 11), BMASK(12, 11));
7235 /* Enable LE2: rxle2en_r2a addr 13 bit [6] = 1 */
7236 ibsd_wr_allchans(ppd, 13, (1 << 6), (1 << 6));
7237
7238 /* May be overridden in qsfp_7322_event */
7239 le_val = IS_QME(ppd->dd) ? LE2_QME : LE2_DEFAULT;
7240 ibsd_wr_allchans(ppd, 13, (le_val << 7), BMASK(9, 7));
7241
7242 /* enable LE1 adaptation for all but QME, which is disabled */
7243 le_val = IS_QME(ppd->dd) ? 0 : 1;
7244 ibsd_wr_allchans(ppd, 13, (le_val << 5), (1 << 5));
7245
7246 /* Clear cmode-override, may be set from older driver */
7247 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 10, 0 << 14, 1 << 14);
7248
7249 /* Timing Recovery: rxtapsel addr 5 bits [9:8] = 0 */
7250 ibsd_wr_allchans(ppd, 5, (0 << 8), BMASK(9, 8));
7251
7252 /* setup LoS params; these are subsystem, so chan == 5 */
7253 /* LoS filter threshold_count on, ch 0-3, set to 8 */
7254 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 5, 8 << 11, BMASK(14, 11));
7255 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 7, 8 << 4, BMASK(7, 4));
7256 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 8, 8 << 11, BMASK(14, 11));
7257 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 10, 8 << 4, BMASK(7, 4));
7258
7259 /* LoS filter threshold_count off, ch 0-3, set to 4 */
7260 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 6, 4 << 0, BMASK(3, 0));
7261 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 7, 4 << 8, BMASK(11, 8));
7262 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 9, 4 << 0, BMASK(3, 0));
7263 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 10, 4 << 8, BMASK(11, 8));
7264
7265 /* LoS filter select enabled */
7266 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), 5, 9, 1 << 15, 1 << 15);
7267
7268 /* LoS target data: SDR=4, DDR=2, QDR=1 */
7269 ibsd_wr_allchans(ppd, 14, (1 << 3), BMASK(5, 3)); /* QDR */
7270 ibsd_wr_allchans(ppd, 20, (2 << 10), BMASK(12, 10)); /* DDR */
7271 ibsd_wr_allchans(ppd, 20, (4 << 13), BMASK(15, 13)); /* SDR */
7272
7273 data = qib_read_kreg_port(ppd, krp_serdesctrl);
7274 /* Turn off IB latency mode */
7275 data &= ~SYM_MASK(IBSerdesCtrl_0, IB_LAT_MODE);
7276 qib_write_kreg_port(ppd, krp_serdesctrl, data |
7277 SYM_MASK(IBSerdesCtrl_0, RXLOSEN));
7278
7279 /* rxbistena; set 0 to avoid effects of it switch later */
7280 ibsd_wr_allchans(ppd, 9, 0 << 15, 1 << 15);
7281
7282 /* Configure 4 DFE taps, and only they adapt */
7283 ibsd_wr_allchans(ppd, 16, 0 << 0, BMASK(1, 0));
7284
7285 /* gain hi stop 32 (22) (6:1) lo stop 7 (10:7) target 22 (13) (15:11) */
7286 le_val = (ppd->dd->cspec->r1 || IS_QME(ppd->dd)) ? 0xb6c0 : 0x6bac;
7287 ibsd_wr_allchans(ppd, 21, le_val, 0xfffe);
7288
7289 /*
7290 * Set receive adaptation mode. SDR and DDR adaptation are
7291 * always on, and QDR is initially enabled; later disabled.
7292 */
7293 qib_write_kreg_port(ppd, krp_static_adapt_dis(0), 0ULL);
7294 qib_write_kreg_port(ppd, krp_static_adapt_dis(1), 0ULL);
7295 qib_write_kreg_port(ppd, krp_static_adapt_dis(2),
7296 ppd->dd->cspec->r1 ?
7297 QDR_STATIC_ADAPT_DOWN_R1 : QDR_STATIC_ADAPT_DOWN);
7298 ppd->cpspec->qdr_dfe_on = 1;
7299
7300 /* FLoop LOS gate: PPM filter enabled */
7301 ibsd_wr_allchans(ppd, 38, 0 << 10, 1 << 10);
7302
7303 /* rx offset center enabled */
7304 ibsd_wr_allchans(ppd, 12, 1 << 4, 1 << 4);
7305
7306 if (!ppd->dd->cspec->r1) {
7307 ibsd_wr_allchans(ppd, 12, 1 << 12, 1 << 12);
7308 ibsd_wr_allchans(ppd, 12, 2 << 8, 0x0f << 8);
7309 }
7310
7311 /* Set the frequency loop bandwidth to 15 */
7312 ibsd_wr_allchans(ppd, 2, 15 << 5, BMASK(8, 5));
7313
7314 return 0;
7315 }
7316
7317 /* start adjust QMH serdes parameters */
7318
7319 static void set_man_code(struct qib_pportdata *ppd, int chan, int code)
7320 {
7321 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
7322 9, code << 9, 0x3f << 9);
7323 }
7324
7325 static void set_man_mode_h1(struct qib_pportdata *ppd, int chan,
7326 int enable, u32 tapenable)
7327 {
7328 if (enable)
7329 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
7330 1, 3 << 10, 0x1f << 10);
7331 else
7332 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
7333 1, 0, 0x1f << 10);
7334 }
7335
7336 /* Set clock to 1, 0, 1, 0 */
7337 static void clock_man(struct qib_pportdata *ppd, int chan)
7338 {
7339 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
7340 4, 0x4000, 0x4000);
7341 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
7342 4, 0, 0x4000);
7343 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
7344 4, 0x4000, 0x4000);
7345 ahb_mod(ppd->dd, IBSD(ppd->hw_pidx), (chan + (chan >> 1)),
7346 4, 0, 0x4000);
7347 }
7348
7349 /*
7350 * write the current Tx serdes pre,post,main,amp settings into the serdes.
7351 * The caller must pass the settings appropriate for the current speed,
7352 * or not care if they are correct for the current speed.
7353 */
7354 static void write_tx_serdes_param(struct qib_pportdata *ppd,
7355 struct txdds_ent *txdds)
7356 {
7357 u64 deemph;
7358
7359 deemph = qib_read_kreg_port(ppd, krp_tx_deemph_override);
7360 /* field names for amp, main, post, pre, respectively */
7361 deemph &= ~(SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0, txampcntl_d2a) |
7362 SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0, txc0_ena) |
7363 SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0, txcp1_ena) |
7364 SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0, txcn1_ena));
7365
7366 deemph |= SYM_MASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
7367 tx_override_deemphasis_select);
7368 deemph |= (txdds->amp & SYM_RMASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
7369 txampcntl_d2a)) << SYM_LSB(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
7370 txampcntl_d2a);
7371 deemph |= (txdds->main & SYM_RMASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
7372 txc0_ena)) << SYM_LSB(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
7373 txc0_ena);
7374 deemph |= (txdds->post & SYM_RMASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
7375 txcp1_ena)) << SYM_LSB(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
7376 txcp1_ena);
7377 deemph |= (txdds->pre & SYM_RMASK(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
7378 txcn1_ena)) << SYM_LSB(IBSD_TX_DEEMPHASIS_OVERRIDE_0,
7379 txcn1_ena);
7380 qib_write_kreg_port(ppd, krp_tx_deemph_override, deemph);
7381 }
7382
7383 /*
7384 * Set the parameters for mez cards on link bounce, so they are
7385 * always exactly what was requested. Similar logic to init_txdds
7386 * but does just the serdes.
7387 */
7388 static void adj_tx_serdes(struct qib_pportdata *ppd)
7389 {
7390 const struct txdds_ent *sdr_dds, *ddr_dds, *qdr_dds;
7391 struct txdds_ent *dds;
7392
7393 find_best_ent(ppd, &sdr_dds, &ddr_dds, &qdr_dds, 1);
7394 dds = (struct txdds_ent *)(ppd->link_speed_active == QIB_IB_QDR ?
7395 qdr_dds : (ppd->link_speed_active == QIB_IB_DDR ?
7396 ddr_dds : sdr_dds));
7397 write_tx_serdes_param(ppd, dds);
7398 }
7399
7400 /* set QDR forced value for H1, if needed */
7401 static void force_h1(struct qib_pportdata *ppd)
7402 {
7403 int chan;
7404
7405 ppd->cpspec->qdr_reforce = 0;
7406 if (!ppd->dd->cspec->r1)
7407 return;
7408
7409 for (chan = 0; chan < SERDES_CHANS; chan++) {
7410 set_man_mode_h1(ppd, chan, 1, 0);
7411 set_man_code(ppd, chan, ppd->cpspec->h1_val);
7412 clock_man(ppd, chan);
7413 set_man_mode_h1(ppd, chan, 0, 0);
7414 }
7415 }
7416
7417 #define SJA_EN SYM_MASK(SPC_JTAG_ACCESS_REG, SPC_JTAG_ACCESS_EN)
7418 #define BISTEN_LSB SYM_LSB(SPC_JTAG_ACCESS_REG, bist_en)
7419
7420 #define R_OPCODE_LSB 3
7421 #define R_OP_NOP 0
7422 #define R_OP_SHIFT 2
7423 #define R_OP_UPDATE 3
7424 #define R_TDI_LSB 2
7425 #define R_TDO_LSB 1
7426 #define R_RDY 1
7427
7428 static int qib_r_grab(struct qib_devdata *dd)
7429 {
7430 u64 val;
7431 val = SJA_EN;
7432 qib_write_kreg(dd, kr_r_access, val);
7433 qib_read_kreg32(dd, kr_scratch);
7434 return 0;
7435 }
7436
7437 /* qib_r_wait_for_rdy() not only waits for the ready bit, it
7438 * returns the current state of R_TDO
7439 */
7440 static int qib_r_wait_for_rdy(struct qib_devdata *dd)
7441 {
7442 u64 val;
7443 int timeout;
7444 for (timeout = 0; timeout < 100 ; ++timeout) {
7445 val = qib_read_kreg32(dd, kr_r_access);
7446 if (val & R_RDY)
7447 return (val >> R_TDO_LSB) & 1;
7448 }
7449 return -1;
7450 }
7451
7452 static int qib_r_shift(struct qib_devdata *dd, int bisten,
7453 int len, u8 *inp, u8 *outp)
7454 {
7455 u64 valbase, val;
7456 int ret, pos;
7457
7458 valbase = SJA_EN | (bisten << BISTEN_LSB) |
7459 (R_OP_SHIFT << R_OPCODE_LSB);
7460 ret = qib_r_wait_for_rdy(dd);
7461 if (ret < 0)
7462 goto bail;
7463 for (pos = 0; pos < len; ++pos) {
7464 val = valbase;
7465 if (outp) {
7466 outp[pos >> 3] &= ~(1 << (pos & 7));
7467 outp[pos >> 3] |= (ret << (pos & 7));
7468 }
7469 if (inp) {
7470 int tdi = inp[pos >> 3] >> (pos & 7);
7471 val |= ((tdi & 1) << R_TDI_LSB);
7472 }
7473 qib_write_kreg(dd, kr_r_access, val);
7474 qib_read_kreg32(dd, kr_scratch);
7475 ret = qib_r_wait_for_rdy(dd);
7476 if (ret < 0)
7477 break;
7478 }
7479 /* Restore to NOP between operations. */
7480 val = SJA_EN | (bisten << BISTEN_LSB);
7481 qib_write_kreg(dd, kr_r_access, val);
7482 qib_read_kreg32(dd, kr_scratch);
7483 ret = qib_r_wait_for_rdy(dd);
7484
7485 if (ret >= 0)
7486 ret = pos;
7487 bail:
7488 return ret;
7489 }
7490
7491 static int qib_r_update(struct qib_devdata *dd, int bisten)
7492 {
7493 u64 val;
7494 int ret;
7495
7496 val = SJA_EN | (bisten << BISTEN_LSB) | (R_OP_UPDATE << R_OPCODE_LSB);
7497 ret = qib_r_wait_for_rdy(dd);
7498 if (ret >= 0) {
7499 qib_write_kreg(dd, kr_r_access, val);
7500 qib_read_kreg32(dd, kr_scratch);
7501 }
7502 return ret;
7503 }
7504
7505 #define BISTEN_PORT_SEL 15
7506 #define LEN_PORT_SEL 625
7507 #define BISTEN_AT 17
7508 #define LEN_AT 156
7509 #define BISTEN_ETM 16
7510 #define LEN_ETM 632
7511
7512 #define BIT2BYTE(x) (((x) + BITS_PER_BYTE - 1) / BITS_PER_BYTE)
7513
7514 /* these are common for all IB port use cases. */
7515 static u8 reset_at[BIT2BYTE(LEN_AT)] = {
7516 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
7517 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00,
7518 };
7519 static u8 reset_atetm[BIT2BYTE(LEN_ETM)] = {
7520 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
7521 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
7522 0x00, 0x00, 0x00, 0x80, 0xe3, 0x81, 0x73, 0x3c, 0x70, 0x8e,
7523 0x07, 0xce, 0xf1, 0xc0, 0x39, 0x1e, 0x38, 0xc7, 0x03, 0xe7,
7524 0x78, 0xe0, 0x1c, 0x0f, 0x9c, 0x7f, 0x80, 0x73, 0x0f, 0x70,
7525 0xde, 0x01, 0xce, 0x39, 0xc0, 0xf9, 0x06, 0x38, 0xd7, 0x00,
7526 0xe7, 0x19, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
7527 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,
7528 };
7529 static u8 at[BIT2BYTE(LEN_AT)] = {
7530 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00,
7531 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00,
7532 };
7533
7534 /* used for IB1 or IB2, only one in use */
7535 static u8 atetm_1port[BIT2BYTE(LEN_ETM)] = {
7536 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
7537 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
7538 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
7539 0x00, 0x10, 0xf2, 0x80, 0x83, 0x1e, 0x38, 0x00, 0x00, 0x00,
7540 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
7541 0x00, 0x00, 0x50, 0xf4, 0x41, 0x00, 0x18, 0x78, 0xc8, 0x03,
7542 0x07, 0x7b, 0xa0, 0x3e, 0x00, 0x02, 0x00, 0x00, 0x18, 0x00,
7543 0x18, 0x00, 0x00, 0x00, 0x00, 0x4b, 0x00, 0x00, 0x00,
7544 };
7545
7546 /* used when both IB1 and IB2 are in use */
7547 static u8 atetm_2port[BIT2BYTE(LEN_ETM)] = {
7548 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
7549 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x79,
7550 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
7551 0x00, 0x00, 0xf8, 0x80, 0x83, 0x1e, 0x38, 0xe0, 0x03, 0x05,
7552 0x7b, 0xa0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80,
7553 0xa2, 0x0f, 0x50, 0xf4, 0x41, 0x00, 0x18, 0x78, 0xd1, 0x07,
7554 0x02, 0x7c, 0x80, 0x3e, 0x00, 0x02, 0x00, 0x00, 0x3e, 0x00,
7555 0x02, 0x00, 0x00, 0x00, 0x00, 0x64, 0x00, 0x00, 0x00,
7556 };
7557
7558 /* used when only IB1 is in use */
7559 static u8 portsel_port1[BIT2BYTE(LEN_PORT_SEL)] = {
7560 0x32, 0x65, 0xa4, 0x7b, 0x10, 0x98, 0xdc, 0xfe, 0x13, 0x13,
7561 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x73, 0x0c, 0x0c, 0x0c,
7562 0x0c, 0x0c, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
7563 0x13, 0x78, 0x78, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
7564 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x74, 0x32,
7565 0x32, 0x32, 0x32, 0x32, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14,
7566 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14,
7567 0x14, 0x14, 0x9f, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
7568 };
7569
7570 /* used when only IB2 is in use */
7571 static u8 portsel_port2[BIT2BYTE(LEN_PORT_SEL)] = {
7572 0x32, 0x65, 0xa4, 0x7b, 0x10, 0x98, 0xdc, 0xfe, 0x39, 0x39,
7573 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x73, 0x32, 0x32, 0x32,
7574 0x32, 0x32, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39,
7575 0x39, 0x78, 0x78, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39,
7576 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x74, 0x32,
7577 0x32, 0x32, 0x32, 0x32, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a,
7578 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a, 0x3a,
7579 0x3a, 0x3a, 0x9f, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01,
7580 };
7581
7582 /* used when both IB1 and IB2 are in use */
7583 static u8 portsel_2port[BIT2BYTE(LEN_PORT_SEL)] = {
7584 0x32, 0xba, 0x54, 0x76, 0x10, 0x98, 0xdc, 0xfe, 0x13, 0x13,
7585 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x73, 0x0c, 0x0c, 0x0c,
7586 0x0c, 0x0c, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
7587 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13, 0x13,
7588 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x74, 0x32,
7589 0x32, 0x32, 0x32, 0x32, 0x14, 0x14, 0x14, 0x14, 0x14, 0x3a,
7590 0x3a, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14,
7591 0x14, 0x14, 0x9f, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
7592 };
7593
7594 /*
7595 * Do setup to properly handle IB link recovery; if port is zero, we
7596 * are initializing to cover both ports; otherwise we are initializing
7597 * to cover a single port card, or the port has reached INIT and we may
7598 * need to switch coverage types.
7599 */
7600 static void setup_7322_link_recovery(struct qib_pportdata *ppd, u32 both)
7601 {
7602 u8 *portsel, *etm;
7603 struct qib_devdata *dd = ppd->dd;
7604
7605 if (!ppd->dd->cspec->r1)
7606 return;
7607 if (!both) {
7608 dd->cspec->recovery_ports_initted++;
7609 ppd->cpspec->recovery_init = 1;
7610 }
7611 if (!both && dd->cspec->recovery_ports_initted == 1) {
7612 portsel = ppd->port == 1 ? portsel_port1 : portsel_port2;
7613 etm = atetm_1port;
7614 } else {
7615 portsel = portsel_2port;
7616 etm = atetm_2port;
7617 }
7618
7619 if (qib_r_grab(dd) < 0 ||
7620 qib_r_shift(dd, BISTEN_ETM, LEN_ETM, reset_atetm, NULL) < 0 ||
7621 qib_r_update(dd, BISTEN_ETM) < 0 ||
7622 qib_r_shift(dd, BISTEN_AT, LEN_AT, reset_at, NULL) < 0 ||
7623 qib_r_update(dd, BISTEN_AT) < 0 ||
7624 qib_r_shift(dd, BISTEN_PORT_SEL, LEN_PORT_SEL,
7625 portsel, NULL) < 0 ||
7626 qib_r_update(dd, BISTEN_PORT_SEL) < 0 ||
7627 qib_r_shift(dd, BISTEN_AT, LEN_AT, at, NULL) < 0 ||
7628 qib_r_update(dd, BISTEN_AT) < 0 ||
7629 qib_r_shift(dd, BISTEN_ETM, LEN_ETM, etm, NULL) < 0 ||
7630 qib_r_update(dd, BISTEN_ETM) < 0)
7631 qib_dev_err(dd, "Failed IB link recovery setup\n");
7632 }
7633
7634 static void check_7322_rxe_status(struct qib_pportdata *ppd)
7635 {
7636 struct qib_devdata *dd = ppd->dd;
7637 u64 fmask;
7638
7639 if (dd->cspec->recovery_ports_initted != 1)
7640 return; /* rest doesn't apply to dualport */
7641 qib_write_kreg(dd, kr_control, dd->control |
7642 SYM_MASK(Control, FreezeMode));
7643 (void)qib_read_kreg64(dd, kr_scratch);
7644 udelay(3); /* ibcreset asserted 400ns, be sure that's over */
7645 fmask = qib_read_kreg64(dd, kr_act_fmask);
7646 if (!fmask) {
7647 /*
7648 * require a powercycle before we'll work again, and make
7649 * sure we get no more interrupts, and don't turn off
7650 * freeze.
7651 */
7652 ppd->dd->cspec->stay_in_freeze = 1;
7653 qib_7322_set_intr_state(ppd->dd, 0);
7654 qib_write_kreg(dd, kr_fmask, 0ULL);
7655 qib_dev_err(dd, "HCA unusable until powercycled\n");
7656 return; /* eventually reset */
7657 }
7658
7659 qib_write_kreg(ppd->dd, kr_hwerrclear,
7660 SYM_MASK(HwErrClear, IBSerdesPClkNotDetectClear_1));
7661
7662 /* don't do the full clear_freeze(), not needed for this */
7663 qib_write_kreg(dd, kr_control, dd->control);
7664 qib_read_kreg32(dd, kr_scratch);
7665 /* take IBC out of reset */
7666 if (ppd->link_speed_supported) {
7667 ppd->cpspec->ibcctrl_a &=
7668 ~SYM_MASK(IBCCtrlA_0, IBStatIntReductionEn);
7669 qib_write_kreg_port(ppd, krp_ibcctrl_a,
7670 ppd->cpspec->ibcctrl_a);
7671 qib_read_kreg32(dd, kr_scratch);
7672 if (ppd->lflags & QIBL_IB_LINK_DISABLED)
7673 qib_set_ib_7322_lstate(ppd, 0,
7674 QLOGIC_IB_IBCC_LINKINITCMD_DISABLE);
7675 }
7676 }