2 * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation.
4 * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved.
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
35 * This file contains all of the code that is specific to the
36 * QLogic_IB 6120 PCIe chip.
39 #include <linux/interrupt.h>
40 #include <linux/pci.h>
41 #include <linux/delay.h>
42 #include <rdma/ib_verbs.h>
45 #include "qib_6120_regs.h"
47 static void qib_6120_setup_setextled(struct qib_pportdata
*, u32
);
48 static void sendctrl_6120_mod(struct qib_pportdata
*ppd
, u32 op
);
49 static u8
qib_6120_phys_portstate(u64
);
50 static u32
qib_6120_iblink_state(u64
);
53 * This file contains all the chip-specific register information and
54 * access functions for the QLogic QLogic_IB PCI-Express chip.
58 /* KREG_IDX uses machine-generated #defines */
59 #define KREG_IDX(regname) (QIB_6120_##regname##_OFFS / sizeof(u64))
61 /* Use defines to tie machine-generated names to lower-case names */
62 #define kr_extctrl KREG_IDX(EXTCtrl)
63 #define kr_extstatus KREG_IDX(EXTStatus)
64 #define kr_gpio_clear KREG_IDX(GPIOClear)
65 #define kr_gpio_mask KREG_IDX(GPIOMask)
66 #define kr_gpio_out KREG_IDX(GPIOOut)
67 #define kr_gpio_status KREG_IDX(GPIOStatus)
68 #define kr_rcvctrl KREG_IDX(RcvCtrl)
69 #define kr_sendctrl KREG_IDX(SendCtrl)
70 #define kr_partitionkey KREG_IDX(RcvPartitionKey)
71 #define kr_hwdiagctrl KREG_IDX(HwDiagCtrl)
72 #define kr_ibcstatus KREG_IDX(IBCStatus)
73 #define kr_ibcctrl KREG_IDX(IBCCtrl)
74 #define kr_sendbuffererror KREG_IDX(SendBufErr0)
75 #define kr_rcvbthqp KREG_IDX(RcvBTHQP)
76 #define kr_counterregbase KREG_IDX(CntrRegBase)
77 #define kr_palign KREG_IDX(PageAlign)
78 #define kr_rcvegrbase KREG_IDX(RcvEgrBase)
79 #define kr_rcvegrcnt KREG_IDX(RcvEgrCnt)
80 #define kr_rcvhdrcnt KREG_IDX(RcvHdrCnt)
81 #define kr_rcvhdrentsize KREG_IDX(RcvHdrEntSize)
82 #define kr_rcvhdrsize KREG_IDX(RcvHdrSize)
83 #define kr_rcvtidbase KREG_IDX(RcvTIDBase)
84 #define kr_rcvtidcnt KREG_IDX(RcvTIDCnt)
85 #define kr_scratch KREG_IDX(Scratch)
86 #define kr_sendctrl KREG_IDX(SendCtrl)
87 #define kr_sendpioavailaddr KREG_IDX(SendPIOAvailAddr)
88 #define kr_sendpiobufbase KREG_IDX(SendPIOBufBase)
89 #define kr_sendpiobufcnt KREG_IDX(SendPIOBufCnt)
90 #define kr_sendpiosize KREG_IDX(SendPIOSize)
91 #define kr_sendregbase KREG_IDX(SendRegBase)
92 #define kr_userregbase KREG_IDX(UserRegBase)
93 #define kr_control KREG_IDX(Control)
94 #define kr_intclear KREG_IDX(IntClear)
95 #define kr_intmask KREG_IDX(IntMask)
96 #define kr_intstatus KREG_IDX(IntStatus)
97 #define kr_errclear KREG_IDX(ErrClear)
98 #define kr_errmask KREG_IDX(ErrMask)
99 #define kr_errstatus KREG_IDX(ErrStatus)
100 #define kr_hwerrclear KREG_IDX(HwErrClear)
101 #define kr_hwerrmask KREG_IDX(HwErrMask)
102 #define kr_hwerrstatus KREG_IDX(HwErrStatus)
103 #define kr_revision KREG_IDX(Revision)
104 #define kr_portcnt KREG_IDX(PortCnt)
105 #define kr_serdes_cfg0 KREG_IDX(SerdesCfg0)
106 #define kr_serdes_cfg1 (kr_serdes_cfg0 + 1)
107 #define kr_serdes_stat KREG_IDX(SerdesStat)
108 #define kr_xgxs_cfg KREG_IDX(XGXSCfg)
110 /* These must only be written via qib_write_kreg_ctxt() */
111 #define kr_rcvhdraddr KREG_IDX(RcvHdrAddr0)
112 #define kr_rcvhdrtailaddr KREG_IDX(RcvHdrTailAddr0)
114 #define CREG_IDX(regname) ((QIB_6120_##regname##_OFFS - \
115 QIB_6120_LBIntCnt_OFFS) / sizeof(u64))
117 #define cr_badformat CREG_IDX(RxBadFormatCnt)
118 #define cr_erricrc CREG_IDX(RxICRCErrCnt)
119 #define cr_errlink CREG_IDX(RxLinkProblemCnt)
120 #define cr_errlpcrc CREG_IDX(RxLPCRCErrCnt)
121 #define cr_errpkey CREG_IDX(RxPKeyMismatchCnt)
122 #define cr_rcvflowctrl_err CREG_IDX(RxFlowCtrlErrCnt)
123 #define cr_err_rlen CREG_IDX(RxLenErrCnt)
124 #define cr_errslen CREG_IDX(TxLenErrCnt)
125 #define cr_errtidfull CREG_IDX(RxTIDFullErrCnt)
126 #define cr_errtidvalid CREG_IDX(RxTIDValidErrCnt)
127 #define cr_errvcrc CREG_IDX(RxVCRCErrCnt)
128 #define cr_ibstatuschange CREG_IDX(IBStatusChangeCnt)
129 #define cr_lbint CREG_IDX(LBIntCnt)
130 #define cr_invalidrlen CREG_IDX(RxMaxMinLenErrCnt)
131 #define cr_invalidslen CREG_IDX(TxMaxMinLenErrCnt)
132 #define cr_lbflowstall CREG_IDX(LBFlowStallCnt)
133 #define cr_pktrcv CREG_IDX(RxDataPktCnt)
134 #define cr_pktrcvflowctrl CREG_IDX(RxFlowPktCnt)
135 #define cr_pktsend CREG_IDX(TxDataPktCnt)
136 #define cr_pktsendflow CREG_IDX(TxFlowPktCnt)
137 #define cr_portovfl CREG_IDX(RxP0HdrEgrOvflCnt)
138 #define cr_rcvebp CREG_IDX(RxEBPCnt)
139 #define cr_rcvovfl CREG_IDX(RxBufOvflCnt)
140 #define cr_senddropped CREG_IDX(TxDroppedPktCnt)
141 #define cr_sendstall CREG_IDX(TxFlowStallCnt)
142 #define cr_sendunderrun CREG_IDX(TxUnderrunCnt)
143 #define cr_wordrcv CREG_IDX(RxDwordCnt)
144 #define cr_wordsend CREG_IDX(TxDwordCnt)
145 #define cr_txunsupvl CREG_IDX(TxUnsupVLErrCnt)
146 #define cr_rxdroppkt CREG_IDX(RxDroppedPktCnt)
147 #define cr_iblinkerrrecov CREG_IDX(IBLinkErrRecoveryCnt)
148 #define cr_iblinkdown CREG_IDX(IBLinkDownedCnt)
149 #define cr_ibsymbolerr CREG_IDX(IBSymbolErrCnt)
151 #define SYM_RMASK(regname, fldname) ((u64) \
152 QIB_6120_##regname##_##fldname##_RMASK)
153 #define SYM_MASK(regname, fldname) ((u64) \
154 QIB_6120_##regname##_##fldname##_RMASK << \
155 QIB_6120_##regname##_##fldname##_LSB)
156 #define SYM_LSB(regname, fldname) (QIB_6120_##regname##_##fldname##_LSB)
158 #define SYM_FIELD(value, regname, fldname) ((u64) \
159 (((value) >> SYM_LSB(regname, fldname)) & \
160 SYM_RMASK(regname, fldname)))
161 #define ERR_MASK(fldname) SYM_MASK(ErrMask, fldname##Mask)
162 #define HWE_MASK(fldname) SYM_MASK(HwErrMask, fldname##Mask)
164 /* link training states, from IBC */
165 #define IB_6120_LT_STATE_DISABLED 0x00
166 #define IB_6120_LT_STATE_LINKUP 0x01
167 #define IB_6120_LT_STATE_POLLACTIVE 0x02
168 #define IB_6120_LT_STATE_POLLQUIET 0x03
169 #define IB_6120_LT_STATE_SLEEPDELAY 0x04
170 #define IB_6120_LT_STATE_SLEEPQUIET 0x05
171 #define IB_6120_LT_STATE_CFGDEBOUNCE 0x08
172 #define IB_6120_LT_STATE_CFGRCVFCFG 0x09
173 #define IB_6120_LT_STATE_CFGWAITRMT 0x0a
174 #define IB_6120_LT_STATE_CFGIDLE 0x0b
175 #define IB_6120_LT_STATE_RECOVERRETRAIN 0x0c
176 #define IB_6120_LT_STATE_RECOVERWAITRMT 0x0e
177 #define IB_6120_LT_STATE_RECOVERIDLE 0x0f
179 /* link state machine states from IBC */
180 #define IB_6120_L_STATE_DOWN 0x0
181 #define IB_6120_L_STATE_INIT 0x1
182 #define IB_6120_L_STATE_ARM 0x2
183 #define IB_6120_L_STATE_ACTIVE 0x3
184 #define IB_6120_L_STATE_ACT_DEFER 0x4
186 static const u8 qib_6120_physportstate
[0x20] = {
187 [IB_6120_LT_STATE_DISABLED
] = IB_PHYSPORTSTATE_DISABLED
,
188 [IB_6120_LT_STATE_LINKUP
] = IB_PHYSPORTSTATE_LINKUP
,
189 [IB_6120_LT_STATE_POLLACTIVE
] = IB_PHYSPORTSTATE_POLL
,
190 [IB_6120_LT_STATE_POLLQUIET
] = IB_PHYSPORTSTATE_POLL
,
191 [IB_6120_LT_STATE_SLEEPDELAY
] = IB_PHYSPORTSTATE_SLEEP
,
192 [IB_6120_LT_STATE_SLEEPQUIET
] = IB_PHYSPORTSTATE_SLEEP
,
193 [IB_6120_LT_STATE_CFGDEBOUNCE
] =
194 IB_PHYSPORTSTATE_CFG_TRAIN
,
195 [IB_6120_LT_STATE_CFGRCVFCFG
] =
196 IB_PHYSPORTSTATE_CFG_TRAIN
,
197 [IB_6120_LT_STATE_CFGWAITRMT
] =
198 IB_PHYSPORTSTATE_CFG_TRAIN
,
199 [IB_6120_LT_STATE_CFGIDLE
] = IB_PHYSPORTSTATE_CFG_TRAIN
,
200 [IB_6120_LT_STATE_RECOVERRETRAIN
] =
201 IB_PHYSPORTSTATE_LINK_ERR_RECOVER
,
202 [IB_6120_LT_STATE_RECOVERWAITRMT
] =
203 IB_PHYSPORTSTATE_LINK_ERR_RECOVER
,
204 [IB_6120_LT_STATE_RECOVERIDLE
] =
205 IB_PHYSPORTSTATE_LINK_ERR_RECOVER
,
206 [0x10] = IB_PHYSPORTSTATE_CFG_TRAIN
,
207 [0x11] = IB_PHYSPORTSTATE_CFG_TRAIN
,
208 [0x12] = IB_PHYSPORTSTATE_CFG_TRAIN
,
209 [0x13] = IB_PHYSPORTSTATE_CFG_TRAIN
,
210 [0x14] = IB_PHYSPORTSTATE_CFG_TRAIN
,
211 [0x15] = IB_PHYSPORTSTATE_CFG_TRAIN
,
212 [0x16] = IB_PHYSPORTSTATE_CFG_TRAIN
,
213 [0x17] = IB_PHYSPORTSTATE_CFG_TRAIN
217 struct qib_chip_specific
{
218 u64 __iomem
*cregbase
;
221 void *dummy_hdrq
; /* used after ctxt close */
222 dma_addr_t dummy_hdrq_phys
;
223 spinlock_t kernel_tid_lock
; /* no back to back kernel TID writes */
224 spinlock_t user_tid_lock
; /* no back to back user TID writes */
225 spinlock_t rcvmod_lock
; /* protect rcvctrl shadow changes */
226 spinlock_t gpio_lock
; /* RMW of shadows/regs for ExtCtrl and GPIO */
229 u64 gpio_out
; /* shadow of kr_gpio_out, for rmw ops */
230 u64 gpio_mask
; /* shadow the gpio mask register */
231 u64 extctrl
; /* shadow the gpio output enable, etc... */
233 * these 5 fields are used to establish deltas for IB symbol
234 * errors and linkrecovery errors. They can be reported on
235 * some chips during link negotiation prior to INIT, and with
236 * DDR when faking DDR negotiations with non-IBTA switches.
237 * The chip counters are adjusted at driver unload if there is
245 u64 ibcctrl
; /* shadow for kr_ibcctrl */
246 u32 lastlinkrecov
; /* link recovery issue */
252 /* used with gpio interrupts to implement IB counters */
253 u32 rxfc_unsupvl_errs
;
254 u32 overrun_thresh_errs
;
256 * these count only cases where _successive_ LocalLinkIntegrity
257 * errors were seen in the receive headers of IB standard packets
262 u64 sword
; /* total dwords sent (sample result) */
263 u64 rword
; /* total dwords received (sample result) */
264 u64 spkts
; /* total packets sent (sample result) */
265 u64 rpkts
; /* total packets received (sample result) */
266 u64 xmit_wait
; /* # of ticks no data sent (sample result) */
267 struct timer_list pma_timer
;
270 u8 pma_sample_status
;
274 #define QLOGIC_IB_IBCC_LINKINITCMD_DISABLE 1
275 /* cycle through TS1/TS2 till OK */
276 #define QLOGIC_IB_IBCC_LINKINITCMD_POLL 2
277 /* wait for TS1, then go on */
278 #define QLOGIC_IB_IBCC_LINKINITCMD_SLEEP 3
279 #define QLOGIC_IB_IBCC_LINKINITCMD_SHIFT 16
281 #define QLOGIC_IB_IBCC_LINKCMD_DOWN 1 /* move to 0x11 */
282 #define QLOGIC_IB_IBCC_LINKCMD_ARMED 2 /* move to 0x21 */
283 #define QLOGIC_IB_IBCC_LINKCMD_ACTIVE 3 /* move to 0x31 */
284 #define QLOGIC_IB_IBCC_LINKCMD_SHIFT 18
287 * We could have a single register get/put routine, that takes a group type,
288 * but this is somewhat clearer and cleaner. It also gives us some error
289 * checking. 64 bit register reads should always work, but are inefficient
290 * on opteron (the northbridge always generates 2 separate HT 32 bit reads),
291 * so we use kreg32 wherever possible. User register and counter register
292 * reads are always 32 bit reads, so only one form of those routines.
296 * qib_read_ureg32 - read 32-bit virtualized per-context register
298 * @regno: register number
299 * @ctxt: context number
301 * Return the contents of a register that is virtualized to be per context.
302 * Returns -1 on errors (not distinguishable from valid contents at
303 * runtime; we may add a separate error variable at some point).
305 static inline u32
qib_read_ureg32(const struct qib_devdata
*dd
,
306 enum qib_ureg regno
, int ctxt
)
308 if (!dd
->kregbase
|| !(dd
->flags
& QIB_PRESENT
))
312 return readl(regno
+ (u64 __iomem
*)
313 ((char __iomem
*)dd
->userbase
+
314 dd
->ureg_align
* ctxt
));
316 return readl(regno
+ (u64 __iomem
*)
318 (char __iomem
*)dd
->kregbase
+
319 dd
->ureg_align
* ctxt
));
323 * qib_write_ureg - write 32-bit virtualized per-context register
325 * @regno: register number
329 * Write the contents of a register that is virtualized to be per context.
331 static inline void qib_write_ureg(const struct qib_devdata
*dd
,
332 enum qib_ureg regno
, u64 value
, int ctxt
)
336 ubase
= (u64 __iomem
*)
337 ((char __iomem
*) dd
->userbase
+
338 dd
->ureg_align
* ctxt
);
340 ubase
= (u64 __iomem
*)
342 (char __iomem
*) dd
->kregbase
+
343 dd
->ureg_align
* ctxt
);
345 if (dd
->kregbase
&& (dd
->flags
& QIB_PRESENT
))
346 writeq(value
, &ubase
[regno
]);
349 static inline u32
qib_read_kreg32(const struct qib_devdata
*dd
,
352 if (!dd
->kregbase
|| !(dd
->flags
& QIB_PRESENT
))
354 return readl((u32 __iomem
*)&dd
->kregbase
[regno
]);
357 static inline u64
qib_read_kreg64(const struct qib_devdata
*dd
,
360 if (!dd
->kregbase
|| !(dd
->flags
& QIB_PRESENT
))
363 return readq(&dd
->kregbase
[regno
]);
366 static inline void qib_write_kreg(const struct qib_devdata
*dd
,
367 const u16 regno
, u64 value
)
369 if (dd
->kregbase
&& (dd
->flags
& QIB_PRESENT
))
370 writeq(value
, &dd
->kregbase
[regno
]);
374 * qib_write_kreg_ctxt - write a device's per-ctxt 64-bit kernel register
375 * @dd: the qlogic_ib device
376 * @regno: the register number to write
377 * @ctxt: the context containing the register
378 * @value: the value to write
380 static inline void qib_write_kreg_ctxt(const struct qib_devdata
*dd
,
381 const u16 regno
, unsigned ctxt
,
384 qib_write_kreg(dd
, regno
+ ctxt
, value
);
387 static inline void write_6120_creg(const struct qib_devdata
*dd
,
388 u16 regno
, u64 value
)
390 if (dd
->cspec
->cregbase
&& (dd
->flags
& QIB_PRESENT
))
391 writeq(value
, &dd
->cspec
->cregbase
[regno
]);
394 static inline u64
read_6120_creg(const struct qib_devdata
*dd
, u16 regno
)
396 if (!dd
->cspec
->cregbase
|| !(dd
->flags
& QIB_PRESENT
))
398 return readq(&dd
->cspec
->cregbase
[regno
]);
401 static inline u32
read_6120_creg32(const struct qib_devdata
*dd
, u16 regno
)
403 if (!dd
->cspec
->cregbase
|| !(dd
->flags
& QIB_PRESENT
))
405 return readl(&dd
->cspec
->cregbase
[regno
]);
408 /* kr_control bits */
409 #define QLOGIC_IB_C_RESET 1U
411 /* kr_intstatus, kr_intclear, kr_intmask bits */
412 #define QLOGIC_IB_I_RCVURG_MASK ((1U << 5) - 1)
413 #define QLOGIC_IB_I_RCVURG_SHIFT 0
414 #define QLOGIC_IB_I_RCVAVAIL_MASK ((1U << 5) - 1)
415 #define QLOGIC_IB_I_RCVAVAIL_SHIFT 12
417 #define QLOGIC_IB_C_FREEZEMODE 0x00000002
418 #define QLOGIC_IB_C_LINKENABLE 0x00000004
419 #define QLOGIC_IB_I_ERROR 0x0000000080000000ULL
420 #define QLOGIC_IB_I_SPIOSENT 0x0000000040000000ULL
421 #define QLOGIC_IB_I_SPIOBUFAVAIL 0x0000000020000000ULL
422 #define QLOGIC_IB_I_GPIO 0x0000000010000000ULL
423 #define QLOGIC_IB_I_BITSEXTANT \
424 ((QLOGIC_IB_I_RCVURG_MASK << QLOGIC_IB_I_RCVURG_SHIFT) | \
425 (QLOGIC_IB_I_RCVAVAIL_MASK << \
426 QLOGIC_IB_I_RCVAVAIL_SHIFT) | \
427 QLOGIC_IB_I_ERROR | QLOGIC_IB_I_SPIOSENT | \
428 QLOGIC_IB_I_SPIOBUFAVAIL | QLOGIC_IB_I_GPIO)
430 /* kr_hwerrclear, kr_hwerrmask, kr_hwerrstatus, bits */
431 #define QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK 0x000000000000003fULL
432 #define QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT 0
433 #define QLOGIC_IB_HWE_PCIEPOISONEDTLP 0x0000000010000000ULL
434 #define QLOGIC_IB_HWE_PCIECPLTIMEOUT 0x0000000020000000ULL
435 #define QLOGIC_IB_HWE_PCIEBUSPARITYXTLH 0x0000000040000000ULL
436 #define QLOGIC_IB_HWE_PCIEBUSPARITYXADM 0x0000000080000000ULL
437 #define QLOGIC_IB_HWE_PCIEBUSPARITYRADM 0x0000000100000000ULL
438 #define QLOGIC_IB_HWE_COREPLL_FBSLIP 0x0080000000000000ULL
439 #define QLOGIC_IB_HWE_COREPLL_RFSLIP 0x0100000000000000ULL
440 #define QLOGIC_IB_HWE_PCIE1PLLFAILED 0x0400000000000000ULL
441 #define QLOGIC_IB_HWE_PCIE0PLLFAILED 0x0800000000000000ULL
442 #define QLOGIC_IB_HWE_SERDESPLLFAILED 0x1000000000000000ULL
445 /* kr_extstatus bits */
446 #define QLOGIC_IB_EXTS_FREQSEL 0x2
447 #define QLOGIC_IB_EXTS_SERDESSEL 0x4
448 #define QLOGIC_IB_EXTS_MEMBIST_ENDTEST 0x0000000000004000
449 #define QLOGIC_IB_EXTS_MEMBIST_FOUND 0x0000000000008000
451 /* kr_xgxsconfig bits */
452 #define QLOGIC_IB_XGXS_RESET 0x5ULL
454 #define _QIB_GPIO_SDA_NUM 1
455 #define _QIB_GPIO_SCL_NUM 0
457 /* Bits in GPIO for the added IB link interrupts */
458 #define GPIO_RXUVL_BIT 3
459 #define GPIO_OVRUN_BIT 4
460 #define GPIO_LLI_BIT 5
461 #define GPIO_ERRINTR_MASK 0x38
464 #define QLOGIC_IB_RT_BUFSIZE_MASK 0xe0000000ULL
465 #define QLOGIC_IB_RT_BUFSIZE_SHIFTVAL(tid) \
466 ((((tid) & QLOGIC_IB_RT_BUFSIZE_MASK) >> 29) + 11 - 1)
467 #define QLOGIC_IB_RT_BUFSIZE(tid) (1 << QLOGIC_IB_RT_BUFSIZE_SHIFTVAL(tid))
468 #define QLOGIC_IB_RT_IS_VALID(tid) \
469 (((tid) & QLOGIC_IB_RT_BUFSIZE_MASK) && \
470 ((((tid) & QLOGIC_IB_RT_BUFSIZE_MASK) != QLOGIC_IB_RT_BUFSIZE_MASK)))
471 #define QLOGIC_IB_RT_ADDR_MASK 0x1FFFFFFFULL /* 29 bits valid */
472 #define QLOGIC_IB_RT_ADDR_SHIFT 10
474 #define QLOGIC_IB_R_INTRAVAIL_SHIFT 16
475 #define QLOGIC_IB_R_TAILUPD_SHIFT 31
476 #define IBA6120_R_PKEY_DIS_SHIFT 30
478 #define PBC_6120_VL15_SEND_CTRL (1ULL << 31) /* pbc; VL15; link_buf only */
480 #define IBCBUSFRSPCPARITYERR HWE_MASK(IBCBusFromSPCParityErr)
481 #define IBCBUSTOSPCPARITYERR HWE_MASK(IBCBusToSPCParityErr)
483 #define SYM_MASK_BIT(regname, fldname, bit) ((u64) \
484 ((1ULL << (SYM_LSB(regname, fldname) + (bit)))))
486 #define TXEMEMPARITYERR_PIOBUF \
487 SYM_MASK_BIT(HwErrMask, TXEMemParityErrMask, 0)
488 #define TXEMEMPARITYERR_PIOPBC \
489 SYM_MASK_BIT(HwErrMask, TXEMemParityErrMask, 1)
490 #define TXEMEMPARITYERR_PIOLAUNCHFIFO \
491 SYM_MASK_BIT(HwErrMask, TXEMemParityErrMask, 2)
493 #define RXEMEMPARITYERR_RCVBUF \
494 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 0)
495 #define RXEMEMPARITYERR_LOOKUPQ \
496 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 1)
497 #define RXEMEMPARITYERR_EXPTID \
498 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 2)
499 #define RXEMEMPARITYERR_EAGERTID \
500 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 3)
501 #define RXEMEMPARITYERR_FLAGBUF \
502 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 4)
503 #define RXEMEMPARITYERR_DATAINFO \
504 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 5)
505 #define RXEMEMPARITYERR_HDRINFO \
506 SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 6)
508 /* 6120 specific hardware errors... */
509 static const struct qib_hwerror_msgs qib_6120_hwerror_msgs
[] = {
510 /* generic hardware errors */
511 QLOGIC_IB_HWE_MSG(IBCBUSFRSPCPARITYERR
, "QIB2IB Parity"),
512 QLOGIC_IB_HWE_MSG(IBCBUSTOSPCPARITYERR
, "IB2QIB Parity"),
514 QLOGIC_IB_HWE_MSG(TXEMEMPARITYERR_PIOBUF
,
515 "TXE PIOBUF Memory Parity"),
516 QLOGIC_IB_HWE_MSG(TXEMEMPARITYERR_PIOPBC
,
517 "TXE PIOPBC Memory Parity"),
518 QLOGIC_IB_HWE_MSG(TXEMEMPARITYERR_PIOLAUNCHFIFO
,
519 "TXE PIOLAUNCHFIFO Memory Parity"),
521 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_RCVBUF
,
522 "RXE RCVBUF Memory Parity"),
523 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_LOOKUPQ
,
524 "RXE LOOKUPQ Memory Parity"),
525 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_EAGERTID
,
526 "RXE EAGERTID Memory Parity"),
527 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_EXPTID
,
528 "RXE EXPTID Memory Parity"),
529 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_FLAGBUF
,
530 "RXE FLAGBUF Memory Parity"),
531 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_DATAINFO
,
532 "RXE DATAINFO Memory Parity"),
533 QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_HDRINFO
,
534 "RXE HDRINFO Memory Parity"),
536 /* chip-specific hardware errors */
537 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEPOISONEDTLP
,
538 "PCIe Poisoned TLP"),
539 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIECPLTIMEOUT
,
540 "PCIe completion timeout"),
542 * In practice, it's unlikely wthat we'll see PCIe PLL, or bus
543 * parity or memory parity error failures, because most likely we
544 * won't be able to talk to the core of the chip. Nonetheless, we
545 * might see them, if they are in parts of the PCIe core that aren't
548 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIE1PLLFAILED
,
550 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIE0PLLFAILED
,
552 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEBUSPARITYXTLH
,
553 "PCIe XTLH core parity"),
554 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEBUSPARITYXADM
,
555 "PCIe ADM TX core parity"),
556 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEBUSPARITYRADM
,
557 "PCIe ADM RX core parity"),
558 QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_SERDESPLLFAILED
,
562 #define TXE_PIO_PARITY (TXEMEMPARITYERR_PIOBUF | TXEMEMPARITYERR_PIOPBC)
563 #define _QIB_PLL_FAIL (QLOGIC_IB_HWE_COREPLL_FBSLIP | \
564 QLOGIC_IB_HWE_COREPLL_RFSLIP)
566 /* variables for sanity checking interrupt and errors */
567 #define IB_HWE_BITSEXTANT \
568 (HWE_MASK(RXEMemParityErr) | \
569 HWE_MASK(TXEMemParityErr) | \
570 (QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK << \
571 QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT) | \
572 QLOGIC_IB_HWE_PCIE1PLLFAILED | \
573 QLOGIC_IB_HWE_PCIE0PLLFAILED | \
574 QLOGIC_IB_HWE_PCIEPOISONEDTLP | \
575 QLOGIC_IB_HWE_PCIECPLTIMEOUT | \
576 QLOGIC_IB_HWE_PCIEBUSPARITYXTLH | \
577 QLOGIC_IB_HWE_PCIEBUSPARITYXADM | \
578 QLOGIC_IB_HWE_PCIEBUSPARITYRADM | \
579 HWE_MASK(PowerOnBISTFailed) | \
580 QLOGIC_IB_HWE_COREPLL_FBSLIP | \
581 QLOGIC_IB_HWE_COREPLL_RFSLIP | \
582 QLOGIC_IB_HWE_SERDESPLLFAILED | \
583 HWE_MASK(IBCBusToSPCParityErr) | \
584 HWE_MASK(IBCBusFromSPCParityErr))
586 #define IB_E_BITSEXTANT \
587 (ERR_MASK(RcvFormatErr) | ERR_MASK(RcvVCRCErr) | \
588 ERR_MASK(RcvICRCErr) | ERR_MASK(RcvMinPktLenErr) | \
589 ERR_MASK(RcvMaxPktLenErr) | ERR_MASK(RcvLongPktLenErr) | \
590 ERR_MASK(RcvShortPktLenErr) | ERR_MASK(RcvUnexpectedCharErr) | \
591 ERR_MASK(RcvUnsupportedVLErr) | ERR_MASK(RcvEBPErr) | \
592 ERR_MASK(RcvIBFlowErr) | ERR_MASK(RcvBadVersionErr) | \
593 ERR_MASK(RcvEgrFullErr) | ERR_MASK(RcvHdrFullErr) | \
594 ERR_MASK(RcvBadTidErr) | ERR_MASK(RcvHdrLenErr) | \
595 ERR_MASK(RcvHdrErr) | ERR_MASK(RcvIBLostLinkErr) | \
596 ERR_MASK(SendMinPktLenErr) | ERR_MASK(SendMaxPktLenErr) | \
597 ERR_MASK(SendUnderRunErr) | ERR_MASK(SendPktLenErr) | \
598 ERR_MASK(SendDroppedSmpPktErr) | \
599 ERR_MASK(SendDroppedDataPktErr) | \
600 ERR_MASK(SendPioArmLaunchErr) | \
601 ERR_MASK(SendUnexpectedPktNumErr) | \
602 ERR_MASK(SendUnsupportedVLErr) | ERR_MASK(IBStatusChanged) | \
603 ERR_MASK(InvalidAddrErr) | ERR_MASK(ResetNegated) | \
604 ERR_MASK(HardwareErr))
606 #define QLOGIC_IB_E_PKTERRS ( \
607 ERR_MASK(SendPktLenErr) | \
608 ERR_MASK(SendDroppedDataPktErr) | \
609 ERR_MASK(RcvVCRCErr) | \
610 ERR_MASK(RcvICRCErr) | \
611 ERR_MASK(RcvShortPktLenErr) | \
614 /* These are all rcv-related errors which we want to count for stats */
615 #define E_SUM_PKTERRS \
616 (ERR_MASK(RcvHdrLenErr) | ERR_MASK(RcvBadTidErr) | \
617 ERR_MASK(RcvBadVersionErr) | ERR_MASK(RcvHdrErr) | \
618 ERR_MASK(RcvLongPktLenErr) | ERR_MASK(RcvShortPktLenErr) | \
619 ERR_MASK(RcvMaxPktLenErr) | ERR_MASK(RcvMinPktLenErr) | \
620 ERR_MASK(RcvFormatErr) | ERR_MASK(RcvUnsupportedVLErr) | \
621 ERR_MASK(RcvUnexpectedCharErr) | ERR_MASK(RcvEBPErr))
623 /* These are all send-related errors which we want to count for stats */
625 (ERR_MASK(SendPioArmLaunchErr) | \
626 ERR_MASK(SendUnexpectedPktNumErr) | \
627 ERR_MASK(SendDroppedDataPktErr) | \
628 ERR_MASK(SendDroppedSmpPktErr) | \
629 ERR_MASK(SendMaxPktLenErr) | ERR_MASK(SendUnsupportedVLErr) | \
630 ERR_MASK(SendMinPktLenErr) | ERR_MASK(SendPktLenErr) | \
631 ERR_MASK(InvalidAddrErr))
634 * this is similar to E_SUM_ERRS, but can't ignore armlaunch, don't ignore
635 * errors not related to freeze and cancelling buffers. Can't ignore
636 * armlaunch because could get more while still cleaning up, and need
637 * to cancel those as they happen.
639 #define E_SPKT_ERRS_IGNORE \
640 (ERR_MASK(SendDroppedDataPktErr) | \
641 ERR_MASK(SendDroppedSmpPktErr) | \
642 ERR_MASK(SendMaxPktLenErr) | ERR_MASK(SendMinPktLenErr) | \
643 ERR_MASK(SendPktLenErr))
646 * these are errors that can occur when the link changes state while
647 * a packet is being sent or received. This doesn't cover things
648 * like EBP or VCRC that can be the result of a sending having the
649 * link change state, so we receive a "known bad" packet.
651 #define E_SUM_LINK_PKTERRS \
652 (ERR_MASK(SendDroppedDataPktErr) | \
653 ERR_MASK(SendDroppedSmpPktErr) | \
654 ERR_MASK(SendMinPktLenErr) | ERR_MASK(SendPktLenErr) | \
655 ERR_MASK(RcvShortPktLenErr) | ERR_MASK(RcvMinPktLenErr) | \
656 ERR_MASK(RcvUnexpectedCharErr))
658 static void qib_6120_put_tid_2(struct qib_devdata
*, u64 __iomem
*,
662 * On platforms using this chip, and not having ordered WC stores, we
663 * can get TXE parity errors due to speculative reads to the PIO buffers,
664 * and this, due to a chip issue can result in (many) false parity error
665 * reports. So it's a debug print on those, and an info print on systems
666 * where the speculative reads don't occur.
668 static void qib_6120_txe_recover(struct qib_devdata
*dd
)
670 if (!qib_unordered_wc())
671 qib_devinfo(dd
->pcidev
,
672 "Recovering from TXE PIO parity error\n");
675 /* enable/disable chip from delivering interrupts */
676 static void qib_6120_set_intr_state(struct qib_devdata
*dd
, u32 enable
)
679 if (dd
->flags
& QIB_BADINTR
)
681 qib_write_kreg(dd
, kr_intmask
, ~0ULL);
682 /* force re-interrupt of any pending interrupts. */
683 qib_write_kreg(dd
, kr_intclear
, 0ULL);
685 qib_write_kreg(dd
, kr_intmask
, 0ULL);
689 * Try to cleanup as much as possible for anything that might have gone
690 * wrong while in freeze mode, such as pio buffers being written by user
691 * processes (causing armlaunch), send errors due to going into freeze mode,
692 * etc., and try to avoid causing extra interrupts while doing so.
693 * Forcibly update the in-memory pioavail register copies after cleanup
694 * because the chip won't do it while in freeze mode (the register values
695 * themselves are kept correct).
696 * Make sure that we don't lose any important interrupts by using the chip
697 * feature that says that writing 0 to a bit in *clear that is set in
698 * *status will cause an interrupt to be generated again (if allowed by
700 * This is in chip-specific code because of all of the register accesses,
701 * even though the details are similar on most chips
703 static void qib_6120_clear_freeze(struct qib_devdata
*dd
)
705 /* disable error interrupts, to avoid confusion */
706 qib_write_kreg(dd
, kr_errmask
, 0ULL);
708 /* also disable interrupts; errormask is sometimes overwriten */
709 qib_6120_set_intr_state(dd
, 0);
711 qib_cancel_sends(dd
->pport
);
713 /* clear the freeze, and be sure chip saw it */
714 qib_write_kreg(dd
, kr_control
, dd
->control
);
715 qib_read_kreg32(dd
, kr_scratch
);
717 /* force in-memory update now we are out of freeze */
718 qib_force_pio_avail_update(dd
);
721 * force new interrupt if any hwerr, error or interrupt bits are
722 * still set, and clear "safe" send packet errors related to freeze
723 * and cancelling sends. Re-enable error interrupts before possible
724 * force of re-interrupt on pending interrupts.
726 qib_write_kreg(dd
, kr_hwerrclear
, 0ULL);
727 qib_write_kreg(dd
, kr_errclear
, E_SPKT_ERRS_IGNORE
);
728 qib_write_kreg(dd
, kr_errmask
, dd
->cspec
->errormask
);
729 qib_6120_set_intr_state(dd
, 1);
733 * qib_handle_6120_hwerrors - display hardware errors.
734 * @dd: the qlogic_ib device
735 * @msg: the output buffer
736 * @msgl: the size of the output buffer
738 * Use same msg buffer as regular errors to avoid excessive stack
739 * use. Most hardware errors are catastrophic, but for right now,
740 * we'll print them and continue. Reuse the same message buffer as
741 * handle_6120_errors() to avoid excessive stack usage.
743 static void qib_handle_6120_hwerrors(struct qib_devdata
*dd
, char *msg
,
752 hwerrs
= qib_read_kreg64(dd
, kr_hwerrstatus
);
755 if (hwerrs
== ~0ULL) {
756 qib_dev_err(dd
, "Read of hardware error status failed "
757 "(all bits set); ignoring\n");
760 qib_stats
.sps_hwerrs
++;
762 /* Always clear the error status register, except MEMBISTFAIL,
763 * regardless of whether we continue or stop using the chip.
764 * We want that set so we know it failed, even across driver reload.
765 * We'll still ignore it in the hwerrmask. We do this partly for
766 * diagnostics, but also for support */
767 qib_write_kreg(dd
, kr_hwerrclear
,
768 hwerrs
& ~HWE_MASK(PowerOnBISTFailed
));
770 hwerrs
&= dd
->cspec
->hwerrmask
;
772 /* We log some errors to EEPROM, check if we have any of those. */
773 for (log_idx
= 0; log_idx
< QIB_EEP_LOG_CNT
; ++log_idx
)
774 if (hwerrs
& dd
->eep_st_masks
[log_idx
].hwerrs_to_log
)
775 qib_inc_eeprom_err(dd
, log_idx
, 1);
778 * Make sure we get this much out, unless told to be quiet,
779 * or it's occurred within the last 5 seconds.
781 if (hwerrs
& ~(TXE_PIO_PARITY
| RXEMEMPARITYERR_EAGERTID
))
782 qib_devinfo(dd
->pcidev
, "Hardware error: hwerr=0x%llx "
783 "(cleared)\n", (unsigned long long) hwerrs
);
785 if (hwerrs
& ~IB_HWE_BITSEXTANT
)
786 qib_dev_err(dd
, "hwerror interrupt with unknown errors "
787 "%llx set\n", (unsigned long long)
788 (hwerrs
& ~IB_HWE_BITSEXTANT
));
790 ctrl
= qib_read_kreg32(dd
, kr_control
);
791 if ((ctrl
& QLOGIC_IB_C_FREEZEMODE
) && !dd
->diag_client
) {
793 * Parity errors in send memory are recoverable,
794 * just cancel the send (if indicated in * sendbuffererror),
795 * count the occurrence, unfreeze (if no other handled
796 * hardware error bits are set), and continue. They can
797 * occur if a processor speculative read is done to the PIO
798 * buffer while we are sending a packet, for example.
800 if (hwerrs
& TXE_PIO_PARITY
) {
801 qib_6120_txe_recover(dd
);
802 hwerrs
&= ~TXE_PIO_PARITY
;
806 static u32 freeze_cnt
;
809 qib_6120_clear_freeze(dd
);
816 if (hwerrs
& HWE_MASK(PowerOnBISTFailed
)) {
818 strlcat(msg
, "[Memory BIST test failed, InfiniPath hardware"
820 /* ignore from now on, so disable until driver reloaded */
821 dd
->cspec
->hwerrmask
&= ~HWE_MASK(PowerOnBISTFailed
);
822 qib_write_kreg(dd
, kr_hwerrmask
, dd
->cspec
->hwerrmask
);
825 qib_format_hwerrors(hwerrs
, qib_6120_hwerror_msgs
,
826 ARRAY_SIZE(qib_6120_hwerror_msgs
), msg
, msgl
);
828 bitsmsg
= dd
->cspec
->bitsmsgbuf
;
829 if (hwerrs
& (QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK
<<
830 QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT
)) {
831 bits
= (u32
) ((hwerrs
>>
832 QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT
) &
833 QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK
);
834 snprintf(bitsmsg
, sizeof dd
->cspec
->bitsmsgbuf
,
835 "[PCIe Mem Parity Errs %x] ", bits
);
836 strlcat(msg
, bitsmsg
, msgl
);
839 if (hwerrs
& _QIB_PLL_FAIL
) {
841 snprintf(bitsmsg
, sizeof dd
->cspec
->bitsmsgbuf
,
842 "[PLL failed (%llx), InfiniPath hardware unusable]",
843 (unsigned long long) hwerrs
& _QIB_PLL_FAIL
);
844 strlcat(msg
, bitsmsg
, msgl
);
845 /* ignore from now on, so disable until driver reloaded */
846 dd
->cspec
->hwerrmask
&= ~(hwerrs
& _QIB_PLL_FAIL
);
847 qib_write_kreg(dd
, kr_hwerrmask
, dd
->cspec
->hwerrmask
);
850 if (hwerrs
& QLOGIC_IB_HWE_SERDESPLLFAILED
) {
852 * If it occurs, it is left masked since the external
853 * interface is unused
855 dd
->cspec
->hwerrmask
&= ~QLOGIC_IB_HWE_SERDESPLLFAILED
;
856 qib_write_kreg(dd
, kr_hwerrmask
, dd
->cspec
->hwerrmask
);
861 * if any set that we aren't ignoring; only
862 * make the complaint once, in case it's stuck
863 * or recurring, and we get here multiple
866 qib_dev_err(dd
, "%s hardware error\n", msg
);
868 *msg
= 0; /* recovered from all of them */
870 if (isfatal
&& !dd
->diag_client
) {
871 qib_dev_err(dd
, "Fatal Hardware Error, no longer"
872 " usable, SN %.16s\n", dd
->serial
);
874 * for /sys status file and user programs to print; if no
875 * trailing brace is copied, we'll know it was truncated.
878 snprintf(dd
->freezemsg
, dd
->freezelen
,
880 qib_disable_after_error(dd
);
885 * Decode the error status into strings, deciding whether to always
886 * print * it or not depending on "normal packet errors" vs everything
887 * else. Return 1 if "real" errors, otherwise 0 if only packet
888 * errors, so caller can decide what to print with the string.
890 static int qib_decode_6120_err(struct qib_devdata
*dd
, char *buf
, size_t blen
,
896 if (err
& QLOGIC_IB_E_PKTERRS
) {
897 if (!(err
& ~QLOGIC_IB_E_PKTERRS
))
899 if ((err
& ERR_MASK(RcvICRCErr
)) &&
900 !(err
&(ERR_MASK(RcvVCRCErr
)|ERR_MASK(RcvEBPErr
))))
901 strlcat(buf
, "CRC ", blen
);
905 if (err
& ERR_MASK(RcvHdrLenErr
))
906 strlcat(buf
, "rhdrlen ", blen
);
907 if (err
& ERR_MASK(RcvBadTidErr
))
908 strlcat(buf
, "rbadtid ", blen
);
909 if (err
& ERR_MASK(RcvBadVersionErr
))
910 strlcat(buf
, "rbadversion ", blen
);
911 if (err
& ERR_MASK(RcvHdrErr
))
912 strlcat(buf
, "rhdr ", blen
);
913 if (err
& ERR_MASK(RcvLongPktLenErr
))
914 strlcat(buf
, "rlongpktlen ", blen
);
915 if (err
& ERR_MASK(RcvMaxPktLenErr
))
916 strlcat(buf
, "rmaxpktlen ", blen
);
917 if (err
& ERR_MASK(RcvMinPktLenErr
))
918 strlcat(buf
, "rminpktlen ", blen
);
919 if (err
& ERR_MASK(SendMinPktLenErr
))
920 strlcat(buf
, "sminpktlen ", blen
);
921 if (err
& ERR_MASK(RcvFormatErr
))
922 strlcat(buf
, "rformaterr ", blen
);
923 if (err
& ERR_MASK(RcvUnsupportedVLErr
))
924 strlcat(buf
, "runsupvl ", blen
);
925 if (err
& ERR_MASK(RcvUnexpectedCharErr
))
926 strlcat(buf
, "runexpchar ", blen
);
927 if (err
& ERR_MASK(RcvIBFlowErr
))
928 strlcat(buf
, "ribflow ", blen
);
929 if (err
& ERR_MASK(SendUnderRunErr
))
930 strlcat(buf
, "sunderrun ", blen
);
931 if (err
& ERR_MASK(SendPioArmLaunchErr
))
932 strlcat(buf
, "spioarmlaunch ", blen
);
933 if (err
& ERR_MASK(SendUnexpectedPktNumErr
))
934 strlcat(buf
, "sunexperrpktnum ", blen
);
935 if (err
& ERR_MASK(SendDroppedSmpPktErr
))
936 strlcat(buf
, "sdroppedsmppkt ", blen
);
937 if (err
& ERR_MASK(SendMaxPktLenErr
))
938 strlcat(buf
, "smaxpktlen ", blen
);
939 if (err
& ERR_MASK(SendUnsupportedVLErr
))
940 strlcat(buf
, "sunsupVL ", blen
);
941 if (err
& ERR_MASK(InvalidAddrErr
))
942 strlcat(buf
, "invalidaddr ", blen
);
943 if (err
& ERR_MASK(RcvEgrFullErr
))
944 strlcat(buf
, "rcvegrfull ", blen
);
945 if (err
& ERR_MASK(RcvHdrFullErr
))
946 strlcat(buf
, "rcvhdrfull ", blen
);
947 if (err
& ERR_MASK(IBStatusChanged
))
948 strlcat(buf
, "ibcstatuschg ", blen
);
949 if (err
& ERR_MASK(RcvIBLostLinkErr
))
950 strlcat(buf
, "riblostlink ", blen
);
951 if (err
& ERR_MASK(HardwareErr
))
952 strlcat(buf
, "hardware ", blen
);
953 if (err
& ERR_MASK(ResetNegated
))
954 strlcat(buf
, "reset ", blen
);
960 * Called when we might have an error that is specific to a particular
961 * PIO buffer, and may need to cancel that buffer, so it can be re-used.
963 static void qib_disarm_6120_senderrbufs(struct qib_pportdata
*ppd
)
965 unsigned long sbuf
[2];
966 struct qib_devdata
*dd
= ppd
->dd
;
969 * It's possible that sendbuffererror could have bits set; might
970 * have already done this as a result of hardware error handling.
972 sbuf
[0] = qib_read_kreg64(dd
, kr_sendbuffererror
);
973 sbuf
[1] = qib_read_kreg64(dd
, kr_sendbuffererror
+ 1);
975 if (sbuf
[0] || sbuf
[1])
976 qib_disarm_piobufs_set(dd
, sbuf
,
977 dd
->piobcnt2k
+ dd
->piobcnt4k
);
980 static int chk_6120_linkrecovery(struct qib_devdata
*dd
, u64 ibcs
)
983 u32 ibstate
= qib_6120_iblink_state(ibcs
);
984 u32 linkrecov
= read_6120_creg32(dd
, cr_iblinkerrrecov
);
986 if (linkrecov
!= dd
->cspec
->lastlinkrecov
) {
987 /* and no more until active again */
988 dd
->cspec
->lastlinkrecov
= 0;
989 qib_set_linkstate(dd
->pport
, QIB_IB_LINKDOWN
);
992 if (ibstate
== IB_PORT_ACTIVE
)
993 dd
->cspec
->lastlinkrecov
=
994 read_6120_creg32(dd
, cr_iblinkerrrecov
);
998 static void handle_6120_errors(struct qib_devdata
*dd
, u64 errs
)
1001 u64 ignore_this_time
= 0;
1004 struct qib_pportdata
*ppd
= dd
->pport
;
1007 /* don't report errors that are masked */
1008 errs
&= dd
->cspec
->errormask
;
1009 msg
= dd
->cspec
->emsgbuf
;
1011 /* do these first, they are most important */
1012 if (errs
& ERR_MASK(HardwareErr
))
1013 qib_handle_6120_hwerrors(dd
, msg
, sizeof dd
->cspec
->emsgbuf
);
1015 for (log_idx
= 0; log_idx
< QIB_EEP_LOG_CNT
; ++log_idx
)
1016 if (errs
& dd
->eep_st_masks
[log_idx
].errs_to_log
)
1017 qib_inc_eeprom_err(dd
, log_idx
, 1);
1019 if (errs
& ~IB_E_BITSEXTANT
)
1020 qib_dev_err(dd
, "error interrupt with unknown errors "
1022 (unsigned long long) (errs
& ~IB_E_BITSEXTANT
));
1024 if (errs
& E_SUM_ERRS
) {
1025 qib_disarm_6120_senderrbufs(ppd
);
1026 if ((errs
& E_SUM_LINK_PKTERRS
) &&
1027 !(ppd
->lflags
& QIBL_LINKACTIVE
)) {
1029 * This can happen when trying to bring the link
1030 * up, but the IB link changes state at the "wrong"
1031 * time. The IB logic then complains that the packet
1032 * isn't valid. We don't want to confuse people, so
1033 * we just don't print them, except at debug
1035 ignore_this_time
= errs
& E_SUM_LINK_PKTERRS
;
1037 } else if ((errs
& E_SUM_LINK_PKTERRS
) &&
1038 !(ppd
->lflags
& QIBL_LINKACTIVE
)) {
1040 * This can happen when SMA is trying to bring the link
1041 * up, but the IB link changes state at the "wrong" time.
1042 * The IB logic then complains that the packet isn't
1043 * valid. We don't want to confuse people, so we just
1044 * don't print them, except at debug
1046 ignore_this_time
= errs
& E_SUM_LINK_PKTERRS
;
1049 qib_write_kreg(dd
, kr_errclear
, errs
);
1051 errs
&= ~ignore_this_time
;
1056 * The ones we mask off are handled specially below
1059 mask
= ERR_MASK(IBStatusChanged
) | ERR_MASK(RcvEgrFullErr
) |
1060 ERR_MASK(RcvHdrFullErr
) | ERR_MASK(HardwareErr
);
1061 qib_decode_6120_err(dd
, msg
, sizeof dd
->cspec
->emsgbuf
, errs
& ~mask
);
1063 if (errs
& E_SUM_PKTERRS
)
1064 qib_stats
.sps_rcverrs
++;
1065 if (errs
& E_SUM_ERRS
)
1066 qib_stats
.sps_txerrs
++;
1068 iserr
= errs
& ~(E_SUM_PKTERRS
| QLOGIC_IB_E_PKTERRS
);
1070 if (errs
& ERR_MASK(IBStatusChanged
)) {
1071 u64 ibcs
= qib_read_kreg64(dd
, kr_ibcstatus
);
1072 u32 ibstate
= qib_6120_iblink_state(ibcs
);
1075 if (ibstate
!= IB_PORT_INIT
&& dd
->cspec
->lastlinkrecov
)
1076 handle
= chk_6120_linkrecovery(dd
, ibcs
);
1078 * Since going into a recovery state causes the link state
1079 * to go down and since recovery is transitory, it is better
1080 * if we "miss" ever seeing the link training state go into
1081 * recovery (i.e., ignore this transition for link state
1082 * special handling purposes) without updating lastibcstat.
1084 if (handle
&& qib_6120_phys_portstate(ibcs
) ==
1085 IB_PHYSPORTSTATE_LINK_ERR_RECOVER
)
1088 qib_handle_e_ibstatuschanged(ppd
, ibcs
);
1091 if (errs
& ERR_MASK(ResetNegated
)) {
1092 qib_dev_err(dd
, "Got reset, requires re-init "
1093 "(unload and reload driver)\n");
1094 dd
->flags
&= ~QIB_INITTED
; /* needs re-init */
1095 /* mark as having had error */
1096 *dd
->devstatusp
|= QIB_STATUS_HWERROR
;
1097 *dd
->pport
->statusp
&= ~QIB_STATUS_IB_CONF
;
1101 qib_dev_porterr(dd
, ppd
->port
, "%s error\n", msg
);
1103 if (ppd
->state_wanted
& ppd
->lflags
)
1104 wake_up_interruptible(&ppd
->state_wait
);
1107 * If there were hdrq or egrfull errors, wake up any processes
1108 * waiting in poll. We used to try to check which contexts had
1109 * the overflow, but given the cost of that and the chip reads
1110 * to support it, it's better to just wake everybody up if we
1111 * get an overflow; waiters can poll again if it's not them.
1113 if (errs
& (ERR_MASK(RcvEgrFullErr
) | ERR_MASK(RcvHdrFullErr
))) {
1114 qib_handle_urcv(dd
, ~0U);
1115 if (errs
& ERR_MASK(RcvEgrFullErr
))
1116 qib_stats
.sps_buffull
++;
1118 qib_stats
.sps_hdrfull
++;
1125 * qib_6120_init_hwerrors - enable hardware errors
1126 * @dd: the qlogic_ib device
1128 * now that we have finished initializing everything that might reasonably
1129 * cause a hardware error, and cleared those errors bits as they occur,
1130 * we can enable hardware errors in the mask (potentially enabling
1131 * freeze mode), and enable hardware errors as errors (along with
1132 * everything else) in errormask
1134 static void qib_6120_init_hwerrors(struct qib_devdata
*dd
)
1139 extsval
= qib_read_kreg64(dd
, kr_extstatus
);
1141 if (!(extsval
& QLOGIC_IB_EXTS_MEMBIST_ENDTEST
))
1142 qib_dev_err(dd
, "MemBIST did not complete!\n");
1144 /* init so all hwerrors interrupt, and enter freeze, ajdust below */
1146 if (dd
->minrev
< 2) {
1148 * Avoid problem with internal interface bus parity
1149 * checking. Fixed in Rev2.
1151 val
&= ~QLOGIC_IB_HWE_PCIEBUSPARITYRADM
;
1153 /* avoid some intel cpu's speculative read freeze mode issue */
1154 val
&= ~TXEMEMPARITYERR_PIOBUF
;
1156 dd
->cspec
->hwerrmask
= val
;
1158 qib_write_kreg(dd
, kr_hwerrclear
, ~HWE_MASK(PowerOnBISTFailed
));
1159 qib_write_kreg(dd
, kr_hwerrmask
, dd
->cspec
->hwerrmask
);
1162 qib_write_kreg(dd
, kr_errclear
, ~0ULL);
1163 /* enable errors that are masked, at least this first time. */
1164 qib_write_kreg(dd
, kr_errmask
, ~0ULL);
1165 dd
->cspec
->errormask
= qib_read_kreg64(dd
, kr_errmask
);
1166 /* clear any interrupts up to this point (ints still not enabled) */
1167 qib_write_kreg(dd
, kr_intclear
, ~0ULL);
1169 qib_write_kreg(dd
, kr_rcvbthqp
,
1170 dd
->qpn_mask
<< (QIB_6120_RcvBTHQP_BTHQP_Mask_LSB
- 1) |
1175 * Disable and enable the armlaunch error. Used for PIO bandwidth testing
1176 * on chips that are count-based, rather than trigger-based. There is no
1177 * reference counting, but that's also fine, given the intended use.
1178 * Only chip-specific because it's all register accesses
1180 static void qib_set_6120_armlaunch(struct qib_devdata
*dd
, u32 enable
)
1183 qib_write_kreg(dd
, kr_errclear
,
1184 ERR_MASK(SendPioArmLaunchErr
));
1185 dd
->cspec
->errormask
|= ERR_MASK(SendPioArmLaunchErr
);
1187 dd
->cspec
->errormask
&= ~ERR_MASK(SendPioArmLaunchErr
);
1188 qib_write_kreg(dd
, kr_errmask
, dd
->cspec
->errormask
);
1192 * Formerly took parameter <which> in pre-shifted,
1193 * pre-merged form with LinkCmd and LinkInitCmd
1194 * together, and assuming the zero was NOP.
1196 static void qib_set_ib_6120_lstate(struct qib_pportdata
*ppd
, u16 linkcmd
,
1200 struct qib_devdata
*dd
= ppd
->dd
;
1201 unsigned long flags
;
1203 if (linitcmd
== QLOGIC_IB_IBCC_LINKINITCMD_DISABLE
) {
1205 * If we are told to disable, note that so link-recovery
1206 * code does not attempt to bring us back up.
1208 spin_lock_irqsave(&ppd
->lflags_lock
, flags
);
1209 ppd
->lflags
|= QIBL_IB_LINK_DISABLED
;
1210 spin_unlock_irqrestore(&ppd
->lflags_lock
, flags
);
1211 } else if (linitcmd
|| linkcmd
== QLOGIC_IB_IBCC_LINKCMD_DOWN
) {
1213 * Any other linkinitcmd will lead to LINKDOWN and then
1214 * to INIT (if all is well), so clear flag to let
1215 * link-recovery code attempt to bring us back up.
1217 spin_lock_irqsave(&ppd
->lflags_lock
, flags
);
1218 ppd
->lflags
&= ~QIBL_IB_LINK_DISABLED
;
1219 spin_unlock_irqrestore(&ppd
->lflags_lock
, flags
);
1222 mod_wd
= (linkcmd
<< QLOGIC_IB_IBCC_LINKCMD_SHIFT
) |
1223 (linitcmd
<< QLOGIC_IB_IBCC_LINKINITCMD_SHIFT
);
1225 qib_write_kreg(dd
, kr_ibcctrl
, dd
->cspec
->ibcctrl
| mod_wd
);
1226 /* write to chip to prevent back-to-back writes of control reg */
1227 qib_write_kreg(dd
, kr_scratch
, 0);
1231 * qib_6120_bringup_serdes - bring up the serdes
1232 * @dd: the qlogic_ib device
1234 static int qib_6120_bringup_serdes(struct qib_pportdata
*ppd
)
1236 struct qib_devdata
*dd
= ppd
->dd
;
1237 u64 val
, config1
, prev_val
, hwstat
, ibc
;
1239 /* Put IBC in reset, sends disabled */
1240 dd
->control
&= ~QLOGIC_IB_C_LINKENABLE
;
1241 qib_write_kreg(dd
, kr_control
, 0ULL);
1243 dd
->cspec
->ibdeltainprog
= 1;
1244 dd
->cspec
->ibsymsnap
= read_6120_creg32(dd
, cr_ibsymbolerr
);
1245 dd
->cspec
->iblnkerrsnap
= read_6120_creg32(dd
, cr_iblinkerrrecov
);
1247 /* flowcontrolwatermark is in units of KBytes */
1248 ibc
= 0x5ULL
<< SYM_LSB(IBCCtrl
, FlowCtrlWaterMark
);
1250 * How often flowctrl sent. More or less in usecs; balance against
1251 * watermark value, so that in theory senders always get a flow
1252 * control update in time to not let the IB link go idle.
1254 ibc
|= 0x3ULL
<< SYM_LSB(IBCCtrl
, FlowCtrlPeriod
);
1255 /* max error tolerance */
1256 dd
->cspec
->lli_thresh
= 0xf;
1257 ibc
|= (u64
) dd
->cspec
->lli_thresh
<< SYM_LSB(IBCCtrl
, PhyerrThreshold
);
1258 /* use "real" buffer space for */
1259 ibc
|= 4ULL << SYM_LSB(IBCCtrl
, CreditScale
);
1260 /* IB credit flow control. */
1261 ibc
|= 0xfULL
<< SYM_LSB(IBCCtrl
, OverrunThreshold
);
1263 * set initial max size pkt IBC will send, including ICRC; it's the
1264 * PIO buffer size in dwords, less 1; also see qib_set_mtu()
1266 ibc
|= ((u64
)(ppd
->ibmaxlen
>> 2) + 1) << SYM_LSB(IBCCtrl
, MaxPktLen
);
1267 dd
->cspec
->ibcctrl
= ibc
; /* without linkcmd or linkinitcmd! */
1269 /* initially come up waiting for TS1, without sending anything. */
1270 val
= dd
->cspec
->ibcctrl
| (QLOGIC_IB_IBCC_LINKINITCMD_DISABLE
<<
1271 QLOGIC_IB_IBCC_LINKINITCMD_SHIFT
);
1272 qib_write_kreg(dd
, kr_ibcctrl
, val
);
1274 val
= qib_read_kreg64(dd
, kr_serdes_cfg0
);
1275 config1
= qib_read_kreg64(dd
, kr_serdes_cfg1
);
1278 * Force reset on, also set rxdetect enable. Must do before reading
1279 * serdesstatus at least for simulation, or some of the bits in
1280 * serdes status will come back as undefined and cause simulation
1283 val
|= SYM_MASK(SerdesCfg0
, ResetPLL
) |
1284 SYM_MASK(SerdesCfg0
, RxDetEnX
) |
1285 (SYM_MASK(SerdesCfg0
, L1PwrDnA
) |
1286 SYM_MASK(SerdesCfg0
, L1PwrDnB
) |
1287 SYM_MASK(SerdesCfg0
, L1PwrDnC
) |
1288 SYM_MASK(SerdesCfg0
, L1PwrDnD
));
1289 qib_write_kreg(dd
, kr_serdes_cfg0
, val
);
1290 /* be sure chip saw it */
1291 qib_read_kreg64(dd
, kr_scratch
);
1292 udelay(5); /* need pll reset set at least for a bit */
1294 * after PLL is reset, set the per-lane Resets and TxIdle and
1295 * clear the PLL reset and rxdetect (to get falling edge).
1296 * Leave L1PWR bits set (permanently)
1298 val
&= ~(SYM_MASK(SerdesCfg0
, RxDetEnX
) |
1299 SYM_MASK(SerdesCfg0
, ResetPLL
) |
1300 (SYM_MASK(SerdesCfg0
, L1PwrDnA
) |
1301 SYM_MASK(SerdesCfg0
, L1PwrDnB
) |
1302 SYM_MASK(SerdesCfg0
, L1PwrDnC
) |
1303 SYM_MASK(SerdesCfg0
, L1PwrDnD
)));
1304 val
|= (SYM_MASK(SerdesCfg0
, ResetA
) |
1305 SYM_MASK(SerdesCfg0
, ResetB
) |
1306 SYM_MASK(SerdesCfg0
, ResetC
) |
1307 SYM_MASK(SerdesCfg0
, ResetD
)) |
1308 SYM_MASK(SerdesCfg0
, TxIdeEnX
);
1309 qib_write_kreg(dd
, kr_serdes_cfg0
, val
);
1310 /* be sure chip saw it */
1311 (void) qib_read_kreg64(dd
, kr_scratch
);
1312 /* need PLL reset clear for at least 11 usec before lane
1313 * resets cleared; give it a few more to be sure */
1315 val
&= ~((SYM_MASK(SerdesCfg0
, ResetA
) |
1316 SYM_MASK(SerdesCfg0
, ResetB
) |
1317 SYM_MASK(SerdesCfg0
, ResetC
) |
1318 SYM_MASK(SerdesCfg0
, ResetD
)) |
1319 SYM_MASK(SerdesCfg0
, TxIdeEnX
));
1321 qib_write_kreg(dd
, kr_serdes_cfg0
, val
);
1322 /* be sure chip saw it */
1323 (void) qib_read_kreg64(dd
, kr_scratch
);
1325 val
= qib_read_kreg64(dd
, kr_xgxs_cfg
);
1327 if (val
& QLOGIC_IB_XGXS_RESET
)
1328 val
&= ~QLOGIC_IB_XGXS_RESET
;
1329 if (SYM_FIELD(val
, XGXSCfg
, polarity_inv
) != ppd
->rx_pol_inv
) {
1330 /* need to compensate for Tx inversion in partner */
1331 val
&= ~SYM_MASK(XGXSCfg
, polarity_inv
);
1332 val
|= (u64
)ppd
->rx_pol_inv
<< SYM_LSB(XGXSCfg
, polarity_inv
);
1334 if (val
!= prev_val
)
1335 qib_write_kreg(dd
, kr_xgxs_cfg
, val
);
1337 val
= qib_read_kreg64(dd
, kr_serdes_cfg0
);
1339 /* clear current and de-emphasis bits */
1340 config1
&= ~0x0ffffffff00ULL
;
1341 /* set current to 20ma */
1342 config1
|= 0x00000000000ULL
;
1343 /* set de-emphasis to -5.68dB */
1344 config1
|= 0x0cccc000000ULL
;
1345 qib_write_kreg(dd
, kr_serdes_cfg1
, config1
);
1347 /* base and port guid same for single port */
1348 ppd
->guid
= dd
->base_guid
;
1351 * the process of setting and un-resetting the serdes normally
1352 * causes a serdes PLL error, so check for that and clear it
1353 * here. Also clearr hwerr bit in errstatus, but not others.
1355 hwstat
= qib_read_kreg64(dd
, kr_hwerrstatus
);
1357 /* should just have PLL, clear all set, in an case */
1358 qib_write_kreg(dd
, kr_hwerrclear
, hwstat
);
1359 qib_write_kreg(dd
, kr_errclear
, ERR_MASK(HardwareErr
));
1362 dd
->control
|= QLOGIC_IB_C_LINKENABLE
;
1363 dd
->control
&= ~QLOGIC_IB_C_FREEZEMODE
;
1364 qib_write_kreg(dd
, kr_control
, dd
->control
);
1370 * qib_6120_quiet_serdes - set serdes to txidle
1371 * @ppd: physical port of the qlogic_ib device
1372 * Called when driver is being unloaded
1374 static void qib_6120_quiet_serdes(struct qib_pportdata
*ppd
)
1376 struct qib_devdata
*dd
= ppd
->dd
;
1379 qib_set_ib_6120_lstate(ppd
, 0, QLOGIC_IB_IBCC_LINKINITCMD_DISABLE
);
1382 dd
->control
&= ~QLOGIC_IB_C_LINKENABLE
;
1383 qib_write_kreg(dd
, kr_control
,
1384 dd
->control
| QLOGIC_IB_C_FREEZEMODE
);
1386 if (dd
->cspec
->ibsymdelta
|| dd
->cspec
->iblnkerrdelta
||
1387 dd
->cspec
->ibdeltainprog
) {
1390 /* enable counter writes */
1391 diagc
= qib_read_kreg64(dd
, kr_hwdiagctrl
);
1392 qib_write_kreg(dd
, kr_hwdiagctrl
,
1393 diagc
| SYM_MASK(HwDiagCtrl
, CounterWrEnable
));
1395 if (dd
->cspec
->ibsymdelta
|| dd
->cspec
->ibdeltainprog
) {
1396 val
= read_6120_creg32(dd
, cr_ibsymbolerr
);
1397 if (dd
->cspec
->ibdeltainprog
)
1398 val
-= val
- dd
->cspec
->ibsymsnap
;
1399 val
-= dd
->cspec
->ibsymdelta
;
1400 write_6120_creg(dd
, cr_ibsymbolerr
, val
);
1402 if (dd
->cspec
->iblnkerrdelta
|| dd
->cspec
->ibdeltainprog
) {
1403 val
= read_6120_creg32(dd
, cr_iblinkerrrecov
);
1404 if (dd
->cspec
->ibdeltainprog
)
1405 val
-= val
- dd
->cspec
->iblnkerrsnap
;
1406 val
-= dd
->cspec
->iblnkerrdelta
;
1407 write_6120_creg(dd
, cr_iblinkerrrecov
, val
);
1410 /* and disable counter writes */
1411 qib_write_kreg(dd
, kr_hwdiagctrl
, diagc
);
1414 val
= qib_read_kreg64(dd
, kr_serdes_cfg0
);
1415 val
|= SYM_MASK(SerdesCfg0
, TxIdeEnX
);
1416 qib_write_kreg(dd
, kr_serdes_cfg0
, val
);
1420 * qib_6120_setup_setextled - set the state of the two external LEDs
1421 * @dd: the qlogic_ib device
1422 * @on: whether the link is up or not
1424 * The exact combo of LEDs if on is true is determined by looking
1427 * These LEDs indicate the physical and logical state of IB link.
1428 * For this chip (at least with recommended board pinouts), LED1
1429 * is Yellow (logical state) and LED2 is Green (physical state),
1431 * Note: We try to match the Mellanox HCA LED behavior as best
1432 * we can. Green indicates physical link state is OK (something is
1433 * plugged in, and we can train).
1434 * Amber indicates the link is logically up (ACTIVE).
1435 * Mellanox further blinks the amber LED to indicate data packet
1436 * activity, but we have no hardware support for that, so it would
1437 * require waking up every 10-20 msecs and checking the counters
1438 * on the chip, and then turning the LED off if appropriate. That's
1439 * visible overhead, so not something we will do.
1442 static void qib_6120_setup_setextled(struct qib_pportdata
*ppd
, u32 on
)
1444 u64 extctl
, val
, lst
, ltst
;
1445 unsigned long flags
;
1446 struct qib_devdata
*dd
= ppd
->dd
;
1449 * The diags use the LED to indicate diag info, so we leave
1450 * the external LED alone when the diags are running.
1452 if (dd
->diag_client
)
1455 /* Allow override of LED display for, e.g. Locating system in rack */
1456 if (ppd
->led_override
) {
1457 ltst
= (ppd
->led_override
& QIB_LED_PHYS
) ?
1458 IB_PHYSPORTSTATE_LINKUP
: IB_PHYSPORTSTATE_DISABLED
,
1459 lst
= (ppd
->led_override
& QIB_LED_LOG
) ?
1460 IB_PORT_ACTIVE
: IB_PORT_DOWN
;
1462 val
= qib_read_kreg64(dd
, kr_ibcstatus
);
1463 ltst
= qib_6120_phys_portstate(val
);
1464 lst
= qib_6120_iblink_state(val
);
1470 spin_lock_irqsave(&dd
->cspec
->gpio_lock
, flags
);
1471 extctl
= dd
->cspec
->extctrl
& ~(SYM_MASK(EXTCtrl
, LEDPriPortGreenOn
) |
1472 SYM_MASK(EXTCtrl
, LEDPriPortYellowOn
));
1474 if (ltst
== IB_PHYSPORTSTATE_LINKUP
)
1475 extctl
|= SYM_MASK(EXTCtrl
, LEDPriPortYellowOn
);
1476 if (lst
== IB_PORT_ACTIVE
)
1477 extctl
|= SYM_MASK(EXTCtrl
, LEDPriPortGreenOn
);
1478 dd
->cspec
->extctrl
= extctl
;
1479 qib_write_kreg(dd
, kr_extctrl
, extctl
);
1480 spin_unlock_irqrestore(&dd
->cspec
->gpio_lock
, flags
);
1483 static void qib_6120_free_irq(struct qib_devdata
*dd
)
1485 if (dd
->cspec
->irq
) {
1486 free_irq(dd
->cspec
->irq
, dd
);
1493 * qib_6120_setup_cleanup - clean up any per-chip chip-specific stuff
1494 * @dd: the qlogic_ib device
1496 * This is called during driver unload.
1498 static void qib_6120_setup_cleanup(struct qib_devdata
*dd
)
1500 qib_6120_free_irq(dd
);
1501 kfree(dd
->cspec
->cntrs
);
1502 kfree(dd
->cspec
->portcntrs
);
1503 if (dd
->cspec
->dummy_hdrq
) {
1504 dma_free_coherent(&dd
->pcidev
->dev
,
1505 ALIGN(dd
->rcvhdrcnt
*
1507 sizeof(u32
), PAGE_SIZE
),
1508 dd
->cspec
->dummy_hdrq
,
1509 dd
->cspec
->dummy_hdrq_phys
);
1510 dd
->cspec
->dummy_hdrq
= NULL
;
1514 static void qib_wantpiobuf_6120_intr(struct qib_devdata
*dd
, u32 needint
)
1516 unsigned long flags
;
1518 spin_lock_irqsave(&dd
->sendctrl_lock
, flags
);
1520 dd
->sendctrl
|= SYM_MASK(SendCtrl
, PIOIntBufAvail
);
1522 dd
->sendctrl
&= ~SYM_MASK(SendCtrl
, PIOIntBufAvail
);
1523 qib_write_kreg(dd
, kr_sendctrl
, dd
->sendctrl
);
1524 qib_write_kreg(dd
, kr_scratch
, 0ULL);
1525 spin_unlock_irqrestore(&dd
->sendctrl_lock
, flags
);
1529 * handle errors and unusual events first, separate function
1530 * to improve cache hits for fast path interrupt handling
1532 static noinline
void unlikely_6120_intr(struct qib_devdata
*dd
, u64 istat
)
1534 if (unlikely(istat
& ~QLOGIC_IB_I_BITSEXTANT
))
1535 qib_dev_err(dd
, "interrupt with unknown interrupts %Lx set\n",
1536 istat
& ~QLOGIC_IB_I_BITSEXTANT
);
1538 if (istat
& QLOGIC_IB_I_ERROR
) {
1541 qib_stats
.sps_errints
++;
1542 estat
= qib_read_kreg64(dd
, kr_errstatus
);
1544 qib_devinfo(dd
->pcidev
, "error interrupt (%Lx), "
1545 "but no error bits set!\n", istat
);
1546 handle_6120_errors(dd
, estat
);
1549 if (istat
& QLOGIC_IB_I_GPIO
) {
1554 * GPIO_3..5 on IBA6120 Rev2 chips indicate
1555 * errors that we need to count.
1557 gpiostatus
= qib_read_kreg32(dd
, kr_gpio_status
);
1558 /* First the error-counter case. */
1559 if (gpiostatus
& GPIO_ERRINTR_MASK
) {
1560 /* want to clear the bits we see asserted. */
1561 to_clear
|= (gpiostatus
& GPIO_ERRINTR_MASK
);
1564 * Count appropriately, clear bits out of our copy,
1565 * as they have been "handled".
1567 if (gpiostatus
& (1 << GPIO_RXUVL_BIT
))
1568 dd
->cspec
->rxfc_unsupvl_errs
++;
1569 if (gpiostatus
& (1 << GPIO_OVRUN_BIT
))
1570 dd
->cspec
->overrun_thresh_errs
++;
1571 if (gpiostatus
& (1 << GPIO_LLI_BIT
))
1572 dd
->cspec
->lli_errs
++;
1573 gpiostatus
&= ~GPIO_ERRINTR_MASK
;
1577 * Some unexpected bits remain. If they could have
1578 * caused the interrupt, complain and clear.
1579 * To avoid repetition of this condition, also clear
1580 * the mask. It is almost certainly due to error.
1582 const u32 mask
= qib_read_kreg32(dd
, kr_gpio_mask
);
1585 * Also check that the chip reflects our shadow,
1586 * and report issues, If they caused the interrupt.
1587 * we will suppress by refreshing from the shadow.
1589 if (mask
& gpiostatus
) {
1590 to_clear
|= (gpiostatus
& mask
);
1591 dd
->cspec
->gpio_mask
&= ~(gpiostatus
& mask
);
1592 qib_write_kreg(dd
, kr_gpio_mask
,
1593 dd
->cspec
->gpio_mask
);
1597 qib_write_kreg(dd
, kr_gpio_clear
, (u64
) to_clear
);
1601 static irqreturn_t
qib_6120intr(int irq
, void *data
)
1603 struct qib_devdata
*dd
= data
;
1605 u32 istat
, ctxtrbits
, rmask
, crcs
= 0;
1608 if ((dd
->flags
& (QIB_PRESENT
| QIB_BADINTR
)) != QIB_PRESENT
) {
1610 * This return value is not great, but we do not want the
1611 * interrupt core code to remove our interrupt handler
1612 * because we don't appear to be handling an interrupt
1613 * during a chip reset.
1619 istat
= qib_read_kreg32(dd
, kr_intstatus
);
1621 if (unlikely(!istat
)) {
1622 ret
= IRQ_NONE
; /* not our interrupt, or already handled */
1625 if (unlikely(istat
== -1)) {
1626 qib_bad_intrstatus(dd
);
1627 /* don't know if it was our interrupt or not */
1632 qib_stats
.sps_ints
++;
1633 if (dd
->int_counter
!= (u32
) -1)
1636 if (unlikely(istat
& (~QLOGIC_IB_I_BITSEXTANT
|
1637 QLOGIC_IB_I_GPIO
| QLOGIC_IB_I_ERROR
)))
1638 unlikely_6120_intr(dd
, istat
);
1641 * Clear the interrupt bits we found set, relatively early, so we
1642 * "know" know the chip will have seen this by the time we process
1643 * the queue, and will re-interrupt if necessary. The processor
1644 * itself won't take the interrupt again until we return.
1646 qib_write_kreg(dd
, kr_intclear
, istat
);
1649 * Handle kernel receive queues before checking for pio buffers
1650 * available since receives can overflow; piobuf waiters can afford
1651 * a few extra cycles, since they were waiting anyway.
1654 ((QLOGIC_IB_I_RCVAVAIL_MASK
<< QLOGIC_IB_I_RCVAVAIL_SHIFT
) |
1655 (QLOGIC_IB_I_RCVURG_MASK
<< QLOGIC_IB_I_RCVURG_SHIFT
));
1657 rmask
= (1U << QLOGIC_IB_I_RCVAVAIL_SHIFT
) |
1658 (1U << QLOGIC_IB_I_RCVURG_SHIFT
);
1659 for (i
= 0; i
< dd
->first_user_ctxt
; i
++) {
1660 if (ctxtrbits
& rmask
) {
1661 ctxtrbits
&= ~rmask
;
1662 crcs
+= qib_kreceive(dd
->rcd
[i
],
1663 &dd
->cspec
->lli_counter
,
1669 u32 cntr
= dd
->cspec
->lli_counter
;
1672 if (cntr
> dd
->cspec
->lli_thresh
) {
1673 dd
->cspec
->lli_counter
= 0;
1674 dd
->cspec
->lli_errs
++;
1676 dd
->cspec
->lli_counter
+= cntr
;
1683 (ctxtrbits
>> QLOGIC_IB_I_RCVAVAIL_SHIFT
) |
1684 (ctxtrbits
>> QLOGIC_IB_I_RCVURG_SHIFT
);
1685 qib_handle_urcv(dd
, ctxtrbits
);
1689 if ((istat
& QLOGIC_IB_I_SPIOBUFAVAIL
) && (dd
->flags
& QIB_INITTED
))
1690 qib_ib_piobufavail(dd
);
1698 * Set up our chip-specific interrupt handler
1699 * The interrupt type has already been setup, so
1700 * we just need to do the registration and error checking.
1702 static void qib_setup_6120_interrupt(struct qib_devdata
*dd
)
1705 * If the chip supports added error indication via GPIO pins,
1706 * enable interrupts on those bits so the interrupt routine
1707 * can count the events. Also set flag so interrupt routine
1708 * can know they are expected.
1710 if (SYM_FIELD(dd
->revision
, Revision_R
,
1711 ChipRevMinor
) > 1) {
1712 /* Rev2+ reports extra errors via internal GPIO pins */
1713 dd
->cspec
->gpio_mask
|= GPIO_ERRINTR_MASK
;
1714 qib_write_kreg(dd
, kr_gpio_mask
, dd
->cspec
->gpio_mask
);
1717 if (!dd
->cspec
->irq
)
1718 qib_dev_err(dd
, "irq is 0, BIOS error? Interrupts won't "
1722 ret
= request_irq(dd
->cspec
->irq
, qib_6120intr
, 0,
1725 qib_dev_err(dd
, "Couldn't setup interrupt "
1726 "(irq=%d): %d\n", dd
->cspec
->irq
,
1732 * pe_boardname - fill in the board name
1733 * @dd: the qlogic_ib device
1735 * info is based on the board revision register
1737 static void pe_boardname(struct qib_devdata
*dd
)
1740 u32 boardid
, namelen
;
1742 boardid
= SYM_FIELD(dd
->revision
, Revision
,
1747 n
= "InfiniPath_QLE7140";
1750 qib_dev_err(dd
, "Unknown 6120 board with ID %u\n", boardid
);
1751 n
= "Unknown_InfiniPath_6120";
1754 namelen
= strlen(n
) + 1;
1755 dd
->boardname
= kmalloc(namelen
, GFP_KERNEL
);
1757 qib_dev_err(dd
, "Failed allocation for board name: %s\n", n
);
1759 snprintf(dd
->boardname
, namelen
, "%s", n
);
1761 if (dd
->majrev
!= 4 || !dd
->minrev
|| dd
->minrev
> 2)
1762 qib_dev_err(dd
, "Unsupported InfiniPath hardware revision "
1763 "%u.%u!\n", dd
->majrev
, dd
->minrev
);
1765 snprintf(dd
->boardversion
, sizeof(dd
->boardversion
),
1766 "ChipABI %u.%u, %s, InfiniPath%u %u.%u, SW Compat %u\n",
1767 QIB_CHIP_VERS_MAJ
, QIB_CHIP_VERS_MIN
, dd
->boardname
,
1768 (unsigned)SYM_FIELD(dd
->revision
, Revision_R
, Arch
),
1769 dd
->majrev
, dd
->minrev
,
1770 (unsigned)SYM_FIELD(dd
->revision
, Revision_R
, SW
));
1775 * This routine sleeps, so it can only be called from user context, not
1776 * from interrupt context. If we need interrupt context, we can split
1777 * it into two routines.
1779 static int qib_6120_setup_reset(struct qib_devdata
*dd
)
1785 u8 int_line
, clinesz
;
1787 qib_pcie_getcmd(dd
, &cmdval
, &int_line
, &clinesz
);
1789 /* Use ERROR so it shows up in logs, etc. */
1790 qib_dev_err(dd
, "Resetting InfiniPath unit %u\n", dd
->unit
);
1792 /* no interrupts till re-initted */
1793 qib_6120_set_intr_state(dd
, 0);
1795 dd
->cspec
->ibdeltainprog
= 0;
1796 dd
->cspec
->ibsymdelta
= 0;
1797 dd
->cspec
->iblnkerrdelta
= 0;
1800 * Keep chip from being accessed until we are ready. Use
1801 * writeq() directly, to allow the write even though QIB_PRESENT
1804 dd
->flags
&= ~(QIB_INITTED
| QIB_PRESENT
);
1805 dd
->int_counter
= 0; /* so we check interrupts work again */
1806 val
= dd
->control
| QLOGIC_IB_C_RESET
;
1807 writeq(val
, &dd
->kregbase
[kr_control
]);
1808 mb(); /* prevent compiler re-ordering around actual reset */
1810 for (i
= 1; i
<= 5; i
++) {
1812 * Allow MBIST, etc. to complete; longer on each retry.
1813 * We sometimes get machine checks from bus timeout if no
1814 * response, so for now, make it *really* long.
1816 msleep(1000 + (1 + i
) * 2000);
1818 qib_pcie_reenable(dd
, cmdval
, int_line
, clinesz
);
1821 * Use readq directly, so we don't need to mark it as PRESENT
1822 * until we get a successful indication that all is well.
1824 val
= readq(&dd
->kregbase
[kr_revision
]);
1825 if (val
== dd
->revision
) {
1826 dd
->flags
|= QIB_PRESENT
; /* it's back */
1827 ret
= qib_reinit_intr(dd
);
1831 ret
= 0; /* failed */
1835 if (qib_pcie_params(dd
, dd
->lbus_width
, NULL
, NULL
))
1836 qib_dev_err(dd
, "Reset failed to setup PCIe or "
1837 "interrupts; continuing anyway\n");
1838 /* clear the reset error, init error/hwerror mask */
1839 qib_6120_init_hwerrors(dd
);
1840 /* for Rev2 error interrupts; nop for rev 1 */
1841 qib_write_kreg(dd
, kr_gpio_mask
, dd
->cspec
->gpio_mask
);
1842 /* clear the reset error, init error/hwerror mask */
1843 qib_6120_init_hwerrors(dd
);
1849 * qib_6120_put_tid - write a TID in chip
1850 * @dd: the qlogic_ib device
1851 * @tidptr: pointer to the expected TID (in chip) to update
1852 * @tidtype: RCVHQ_RCV_TYPE_EAGER (1) for eager, RCVHQ_RCV_TYPE_EXPECTED (0)
1854 * @pa: physical address of in memory buffer; tidinvalid if freeing
1856 * This exists as a separate routine to allow for special locking etc.
1857 * It's used for both the full cleanup on exit, as well as the normal
1858 * setup and teardown.
1860 static void qib_6120_put_tid(struct qib_devdata
*dd
, u64 __iomem
*tidptr
,
1861 u32 type
, unsigned long pa
)
1863 u32 __iomem
*tidp32
= (u32 __iomem
*)tidptr
;
1864 unsigned long flags
;
1866 spinlock_t
*tidlockp
; /* select appropriate spinlock */
1871 if (pa
!= dd
->tidinvalid
) {
1872 if (pa
& ((1U << 11) - 1)) {
1873 qib_dev_err(dd
, "Physaddr %lx not 2KB aligned!\n",
1878 if (pa
& ~QLOGIC_IB_RT_ADDR_MASK
) {
1879 qib_dev_err(dd
, "Physical page address 0x%lx "
1880 "larger than supported\n", pa
);
1884 if (type
== RCVHQ_RCV_TYPE_EAGER
)
1885 pa
|= dd
->tidtemplate
;
1886 else /* for now, always full 4KB page */
1891 * Avoid chip issue by writing the scratch register
1892 * before and after the TID, and with an io write barrier.
1893 * We use a spinlock around the writes, so they can't intermix
1894 * with other TID (eager or expected) writes (the chip problem
1895 * is triggered by back to back TID writes). Unfortunately, this
1896 * call can be done from interrupt level for the ctxt 0 eager TIDs,
1897 * so we have to use irqsave locks.
1900 * Assumes tidptr always > egrtidbase
1901 * if type == RCVHQ_RCV_TYPE_EAGER.
1903 tidx
= tidptr
- dd
->egrtidbase
;
1905 tidlockp
= (type
== RCVHQ_RCV_TYPE_EAGER
&& tidx
< dd
->rcvhdrcnt
)
1906 ? &dd
->cspec
->kernel_tid_lock
: &dd
->cspec
->user_tid_lock
;
1907 spin_lock_irqsave(tidlockp
, flags
);
1908 qib_write_kreg(dd
, kr_scratch
, 0xfeeddeaf);
1910 qib_write_kreg(dd
, kr_scratch
, 0xdeadbeef);
1912 spin_unlock_irqrestore(tidlockp
, flags
);
1916 * qib_6120_put_tid_2 - write a TID in chip, Revision 2 or higher
1917 * @dd: the qlogic_ib device
1918 * @tidptr: pointer to the expected TID (in chip) to update
1919 * @tidtype: RCVHQ_RCV_TYPE_EAGER (1) for eager, RCVHQ_RCV_TYPE_EXPECTED (0)
1921 * @pa: physical address of in memory buffer; tidinvalid if freeing
1923 * This exists as a separate routine to allow for selection of the
1924 * appropriate "flavor". The static calls in cleanup just use the
1925 * revision-agnostic form, as they are not performance critical.
1927 static void qib_6120_put_tid_2(struct qib_devdata
*dd
, u64 __iomem
*tidptr
,
1928 u32 type
, unsigned long pa
)
1930 u32 __iomem
*tidp32
= (u32 __iomem
*)tidptr
;
1936 if (pa
!= dd
->tidinvalid
) {
1937 if (pa
& ((1U << 11) - 1)) {
1938 qib_dev_err(dd
, "Physaddr %lx not 2KB aligned!\n",
1943 if (pa
& ~QLOGIC_IB_RT_ADDR_MASK
) {
1944 qib_dev_err(dd
, "Physical page address 0x%lx "
1945 "larger than supported\n", pa
);
1949 if (type
== RCVHQ_RCV_TYPE_EAGER
)
1950 pa
|= dd
->tidtemplate
;
1951 else /* for now, always full 4KB page */
1954 tidx
= tidptr
- dd
->egrtidbase
;
1961 * qib_6120_clear_tids - clear all TID entries for a context, expected and eager
1962 * @dd: the qlogic_ib device
1963 * @ctxt: the context
1965 * clear all TID entries for a context, expected and eager.
1966 * Used from qib_close(). On this chip, TIDs are only 32 bits,
1967 * not 64, but they are still on 64 bit boundaries, so tidbase
1968 * is declared as u64 * for the pointer math, even though we write 32 bits
1970 static void qib_6120_clear_tids(struct qib_devdata
*dd
,
1971 struct qib_ctxtdata
*rcd
)
1973 u64 __iomem
*tidbase
;
1974 unsigned long tidinv
;
1978 if (!dd
->kregbase
|| !rcd
)
1983 tidinv
= dd
->tidinvalid
;
1984 tidbase
= (u64 __iomem
*)
1985 ((char __iomem
*)(dd
->kregbase
) +
1987 ctxt
* dd
->rcvtidcnt
* sizeof(*tidbase
));
1989 for (i
= 0; i
< dd
->rcvtidcnt
; i
++)
1990 /* use func pointer because could be one of two funcs */
1991 dd
->f_put_tid(dd
, &tidbase
[i
], RCVHQ_RCV_TYPE_EXPECTED
,
1994 tidbase
= (u64 __iomem
*)
1995 ((char __iomem
*)(dd
->kregbase
) +
1997 rcd
->rcvegr_tid_base
* sizeof(*tidbase
));
1999 for (i
= 0; i
< rcd
->rcvegrcnt
; i
++)
2000 /* use func pointer because could be one of two funcs */
2001 dd
->f_put_tid(dd
, &tidbase
[i
], RCVHQ_RCV_TYPE_EAGER
,
2006 * qib_6120_tidtemplate - setup constants for TID updates
2007 * @dd: the qlogic_ib device
2009 * We setup stuff that we use a lot, to avoid calculating each time
2011 static void qib_6120_tidtemplate(struct qib_devdata
*dd
)
2013 u32 egrsize
= dd
->rcvegrbufsize
;
2016 * For now, we always allocate 4KB buffers (at init) so we can
2017 * receive max size packets. We may want a module parameter to
2018 * specify 2KB or 4KB and/or make be per ctxt instead of per device
2019 * for those who want to reduce memory footprint. Note that the
2020 * rcvhdrentsize size must be large enough to hold the largest
2021 * IB header (currently 96 bytes) that we expect to handle (plus of
2022 * course the 2 dwords of RHF).
2024 if (egrsize
== 2048)
2025 dd
->tidtemplate
= 1U << 29;
2026 else if (egrsize
== 4096)
2027 dd
->tidtemplate
= 2U << 29;
2031 int __attribute__((weak
)) qib_unordered_wc(void)
2037 * qib_6120_get_base_info - set chip-specific flags for user code
2038 * @rcd: the qlogic_ib ctxt
2039 * @kbase: qib_base_info pointer
2041 * We set the PCIE flag because the lower bandwidth on PCIe vs
2042 * HyperTransport can affect some user packet algorithms.
2044 static int qib_6120_get_base_info(struct qib_ctxtdata
*rcd
,
2045 struct qib_base_info
*kinfo
)
2047 if (qib_unordered_wc())
2048 kinfo
->spi_runtime_flags
|= QIB_RUNTIME_FORCE_WC_ORDER
;
2050 kinfo
->spi_runtime_flags
|= QIB_RUNTIME_PCIE
|
2051 QIB_RUNTIME_FORCE_PIOAVAIL
| QIB_RUNTIME_PIO_REGSWAPPED
;
2056 static struct qib_message_header
*
2057 qib_6120_get_msgheader(struct qib_devdata
*dd
, __le32
*rhf_addr
)
2059 return (struct qib_message_header
*)
2060 &rhf_addr
[sizeof(u64
) / sizeof(u32
)];
2063 static void qib_6120_config_ctxts(struct qib_devdata
*dd
)
2065 dd
->ctxtcnt
= qib_read_kreg32(dd
, kr_portcnt
);
2066 if (qib_n_krcv_queues
> 1) {
2067 dd
->first_user_ctxt
= qib_n_krcv_queues
* dd
->num_pports
;
2068 if (dd
->first_user_ctxt
> dd
->ctxtcnt
)
2069 dd
->first_user_ctxt
= dd
->ctxtcnt
;
2070 dd
->qpn_mask
= dd
->first_user_ctxt
<= 2 ? 2 : 6;
2072 dd
->first_user_ctxt
= dd
->num_pports
;
2073 dd
->n_krcv_queues
= dd
->first_user_ctxt
;
2076 static void qib_update_6120_usrhead(struct qib_ctxtdata
*rcd
, u64 hd
,
2077 u32 updegr
, u32 egrhd
)
2079 qib_write_ureg(rcd
->dd
, ur_rcvhdrhead
, hd
, rcd
->ctxt
);
2081 qib_write_ureg(rcd
->dd
, ur_rcvegrindexhead
, egrhd
, rcd
->ctxt
);
2084 static u32
qib_6120_hdrqempty(struct qib_ctxtdata
*rcd
)
2088 head
= qib_read_ureg32(rcd
->dd
, ur_rcvhdrhead
, rcd
->ctxt
);
2089 if (rcd
->rcvhdrtail_kvaddr
)
2090 tail
= qib_get_rcvhdrtail(rcd
);
2092 tail
= qib_read_ureg32(rcd
->dd
, ur_rcvhdrtail
, rcd
->ctxt
);
2093 return head
== tail
;
2097 * Used when we close any ctxt, for DMA already in flight
2098 * at close. Can't be done until we know hdrq size, so not
2099 * early in chip init.
2101 static void alloc_dummy_hdrq(struct qib_devdata
*dd
)
2103 dd
->cspec
->dummy_hdrq
= dma_alloc_coherent(&dd
->pcidev
->dev
,
2104 dd
->rcd
[0]->rcvhdrq_size
,
2105 &dd
->cspec
->dummy_hdrq_phys
,
2106 GFP_KERNEL
| __GFP_COMP
);
2107 if (!dd
->cspec
->dummy_hdrq
) {
2108 qib_devinfo(dd
->pcidev
, "Couldn't allocate dummy hdrq\n");
2109 /* fallback to just 0'ing */
2110 dd
->cspec
->dummy_hdrq_phys
= 0UL;
2115 * Modify the RCVCTRL register in chip-specific way. This
2116 * is a function because bit positions and (future) register
2117 * location is chip-specific, but the needed operations are
2118 * generic. <op> is a bit-mask because we often want to
2119 * do multiple modifications.
2121 static void rcvctrl_6120_mod(struct qib_pportdata
*ppd
, unsigned int op
,
2124 struct qib_devdata
*dd
= ppd
->dd
;
2126 unsigned long flags
;
2128 spin_lock_irqsave(&dd
->cspec
->rcvmod_lock
, flags
);
2130 if (op
& QIB_RCVCTRL_TAILUPD_ENB
)
2131 dd
->rcvctrl
|= (1ULL << QLOGIC_IB_R_TAILUPD_SHIFT
);
2132 if (op
& QIB_RCVCTRL_TAILUPD_DIS
)
2133 dd
->rcvctrl
&= ~(1ULL << QLOGIC_IB_R_TAILUPD_SHIFT
);
2134 if (op
& QIB_RCVCTRL_PKEY_ENB
)
2135 dd
->rcvctrl
&= ~(1ULL << IBA6120_R_PKEY_DIS_SHIFT
);
2136 if (op
& QIB_RCVCTRL_PKEY_DIS
)
2137 dd
->rcvctrl
|= (1ULL << IBA6120_R_PKEY_DIS_SHIFT
);
2139 mask
= (1ULL << dd
->ctxtcnt
) - 1;
2141 mask
= (1ULL << ctxt
);
2142 if (op
& QIB_RCVCTRL_CTXT_ENB
) {
2143 /* always done for specific ctxt */
2144 dd
->rcvctrl
|= (mask
<< SYM_LSB(RcvCtrl
, PortEnable
));
2145 if (!(dd
->flags
& QIB_NODMA_RTAIL
))
2146 dd
->rcvctrl
|= 1ULL << QLOGIC_IB_R_TAILUPD_SHIFT
;
2147 /* Write these registers before the context is enabled. */
2148 qib_write_kreg_ctxt(dd
, kr_rcvhdrtailaddr
, ctxt
,
2149 dd
->rcd
[ctxt
]->rcvhdrqtailaddr_phys
);
2150 qib_write_kreg_ctxt(dd
, kr_rcvhdraddr
, ctxt
,
2151 dd
->rcd
[ctxt
]->rcvhdrq_phys
);
2153 if (ctxt
== 0 && !dd
->cspec
->dummy_hdrq
)
2154 alloc_dummy_hdrq(dd
);
2156 if (op
& QIB_RCVCTRL_CTXT_DIS
)
2157 dd
->rcvctrl
&= ~(mask
<< SYM_LSB(RcvCtrl
, PortEnable
));
2158 if (op
& QIB_RCVCTRL_INTRAVAIL_ENB
)
2159 dd
->rcvctrl
|= (mask
<< QLOGIC_IB_R_INTRAVAIL_SHIFT
);
2160 if (op
& QIB_RCVCTRL_INTRAVAIL_DIS
)
2161 dd
->rcvctrl
&= ~(mask
<< QLOGIC_IB_R_INTRAVAIL_SHIFT
);
2162 qib_write_kreg(dd
, kr_rcvctrl
, dd
->rcvctrl
);
2163 if ((op
& QIB_RCVCTRL_INTRAVAIL_ENB
) && dd
->rhdrhead_intr_off
) {
2164 /* arm rcv interrupt */
2165 val
= qib_read_ureg32(dd
, ur_rcvhdrhead
, ctxt
) |
2166 dd
->rhdrhead_intr_off
;
2167 qib_write_ureg(dd
, ur_rcvhdrhead
, val
, ctxt
);
2169 if (op
& QIB_RCVCTRL_CTXT_ENB
) {
2171 * Init the context registers also; if we were
2172 * disabled, tail and head should both be zero
2173 * already from the enable, but since we don't
2174 * know, we have to do it explictly.
2176 val
= qib_read_ureg32(dd
, ur_rcvegrindextail
, ctxt
);
2177 qib_write_ureg(dd
, ur_rcvegrindexhead
, val
, ctxt
);
2179 val
= qib_read_ureg32(dd
, ur_rcvhdrtail
, ctxt
);
2180 dd
->rcd
[ctxt
]->head
= val
;
2181 /* If kctxt, interrupt on next receive. */
2182 if (ctxt
< dd
->first_user_ctxt
)
2183 val
|= dd
->rhdrhead_intr_off
;
2184 qib_write_ureg(dd
, ur_rcvhdrhead
, val
, ctxt
);
2186 if (op
& QIB_RCVCTRL_CTXT_DIS
) {
2188 * Be paranoid, and never write 0's to these, just use an
2189 * unused page. Of course,
2190 * rcvhdraddr points to a large chunk of memory, so this
2191 * could still trash things, but at least it won't trash
2192 * page 0, and by disabling the ctxt, it should stop "soon",
2193 * even if a packet or two is in already in flight after we
2194 * disabled the ctxt. Only 6120 has this issue.
2197 qib_write_kreg_ctxt(dd
, kr_rcvhdrtailaddr
, ctxt
,
2198 dd
->cspec
->dummy_hdrq_phys
);
2199 qib_write_kreg_ctxt(dd
, kr_rcvhdraddr
, ctxt
,
2200 dd
->cspec
->dummy_hdrq_phys
);
2204 for (i
= 0; i
< dd
->cfgctxts
; i
++) {
2205 qib_write_kreg_ctxt(dd
, kr_rcvhdrtailaddr
,
2206 i
, dd
->cspec
->dummy_hdrq_phys
);
2207 qib_write_kreg_ctxt(dd
, kr_rcvhdraddr
,
2208 i
, dd
->cspec
->dummy_hdrq_phys
);
2212 spin_unlock_irqrestore(&dd
->cspec
->rcvmod_lock
, flags
);
2216 * Modify the SENDCTRL register in chip-specific way. This
2217 * is a function there may be multiple such registers with
2218 * slightly different layouts. Only operations actually used
2219 * are implemented yet.
2220 * Chip requires no back-back sendctrl writes, so write
2221 * scratch register after writing sendctrl
2223 static void sendctrl_6120_mod(struct qib_pportdata
*ppd
, u32 op
)
2225 struct qib_devdata
*dd
= ppd
->dd
;
2226 u64 tmp_dd_sendctrl
;
2227 unsigned long flags
;
2229 spin_lock_irqsave(&dd
->sendctrl_lock
, flags
);
2231 /* First the ones that are "sticky", saved in shadow */
2232 if (op
& QIB_SENDCTRL_CLEAR
)
2234 if (op
& QIB_SENDCTRL_SEND_DIS
)
2235 dd
->sendctrl
&= ~SYM_MASK(SendCtrl
, PIOEnable
);
2236 else if (op
& QIB_SENDCTRL_SEND_ENB
)
2237 dd
->sendctrl
|= SYM_MASK(SendCtrl
, PIOEnable
);
2238 if (op
& QIB_SENDCTRL_AVAIL_DIS
)
2239 dd
->sendctrl
&= ~SYM_MASK(SendCtrl
, PIOBufAvailUpd
);
2240 else if (op
& QIB_SENDCTRL_AVAIL_ENB
)
2241 dd
->sendctrl
|= SYM_MASK(SendCtrl
, PIOBufAvailUpd
);
2243 if (op
& QIB_SENDCTRL_DISARM_ALL
) {
2246 tmp_dd_sendctrl
= dd
->sendctrl
;
2248 * disarm any that are not yet launched, disabling sends
2249 * and updates until done.
2251 last
= dd
->piobcnt2k
+ dd
->piobcnt4k
;
2253 ~(SYM_MASK(SendCtrl
, PIOEnable
) |
2254 SYM_MASK(SendCtrl
, PIOBufAvailUpd
));
2255 for (i
= 0; i
< last
; i
++) {
2256 qib_write_kreg(dd
, kr_sendctrl
, tmp_dd_sendctrl
|
2257 SYM_MASK(SendCtrl
, Disarm
) | i
);
2258 qib_write_kreg(dd
, kr_scratch
, 0);
2262 tmp_dd_sendctrl
= dd
->sendctrl
;
2264 if (op
& QIB_SENDCTRL_FLUSH
)
2265 tmp_dd_sendctrl
|= SYM_MASK(SendCtrl
, Abort
);
2266 if (op
& QIB_SENDCTRL_DISARM
)
2267 tmp_dd_sendctrl
|= SYM_MASK(SendCtrl
, Disarm
) |
2268 ((op
& QIB_6120_SendCtrl_DisarmPIOBuf_RMASK
) <<
2269 SYM_LSB(SendCtrl
, DisarmPIOBuf
));
2270 if (op
& QIB_SENDCTRL_AVAIL_BLIP
)
2271 tmp_dd_sendctrl
&= ~SYM_MASK(SendCtrl
, PIOBufAvailUpd
);
2273 qib_write_kreg(dd
, kr_sendctrl
, tmp_dd_sendctrl
);
2274 qib_write_kreg(dd
, kr_scratch
, 0);
2276 if (op
& QIB_SENDCTRL_AVAIL_BLIP
) {
2277 qib_write_kreg(dd
, kr_sendctrl
, dd
->sendctrl
);
2278 qib_write_kreg(dd
, kr_scratch
, 0);
2281 spin_unlock_irqrestore(&dd
->sendctrl_lock
, flags
);
2283 if (op
& QIB_SENDCTRL_FLUSH
) {
2286 * ensure writes have hit chip, then do a few
2287 * more reads, to allow DMA of pioavail registers
2288 * to occur, so in-memory copy is in sync with
2289 * the chip. Not always safe to sleep.
2291 v
= qib_read_kreg32(dd
, kr_scratch
);
2292 qib_write_kreg(dd
, kr_scratch
, v
);
2293 v
= qib_read_kreg32(dd
, kr_scratch
);
2294 qib_write_kreg(dd
, kr_scratch
, v
);
2295 qib_read_kreg32(dd
, kr_scratch
);
2300 * qib_portcntr_6120 - read a per-port counter
2301 * @dd: the qlogic_ib device
2302 * @creg: the counter to snapshot
2304 static u64
qib_portcntr_6120(struct qib_pportdata
*ppd
, u32 reg
)
2307 struct qib_devdata
*dd
= ppd
->dd
;
2309 /* 0xffff for unimplemented or synthesized counters */
2310 static const u16 xlator
[] = {
2311 [QIBPORTCNTR_PKTSEND
] = cr_pktsend
,
2312 [QIBPORTCNTR_WORDSEND
] = cr_wordsend
,
2313 [QIBPORTCNTR_PSXMITDATA
] = 0xffff,
2314 [QIBPORTCNTR_PSXMITPKTS
] = 0xffff,
2315 [QIBPORTCNTR_PSXMITWAIT
] = 0xffff,
2316 [QIBPORTCNTR_SENDSTALL
] = cr_sendstall
,
2317 [QIBPORTCNTR_PKTRCV
] = cr_pktrcv
,
2318 [QIBPORTCNTR_PSRCVDATA
] = 0xffff,
2319 [QIBPORTCNTR_PSRCVPKTS
] = 0xffff,
2320 [QIBPORTCNTR_RCVEBP
] = cr_rcvebp
,
2321 [QIBPORTCNTR_RCVOVFL
] = cr_rcvovfl
,
2322 [QIBPORTCNTR_WORDRCV
] = cr_wordrcv
,
2323 [QIBPORTCNTR_RXDROPPKT
] = cr_rxdroppkt
,
2324 [QIBPORTCNTR_RXLOCALPHYERR
] = 0xffff,
2325 [QIBPORTCNTR_RXVLERR
] = 0xffff,
2326 [QIBPORTCNTR_ERRICRC
] = cr_erricrc
,
2327 [QIBPORTCNTR_ERRVCRC
] = cr_errvcrc
,
2328 [QIBPORTCNTR_ERRLPCRC
] = cr_errlpcrc
,
2329 [QIBPORTCNTR_BADFORMAT
] = cr_badformat
,
2330 [QIBPORTCNTR_ERR_RLEN
] = cr_err_rlen
,
2331 [QIBPORTCNTR_IBSYMBOLERR
] = cr_ibsymbolerr
,
2332 [QIBPORTCNTR_INVALIDRLEN
] = cr_invalidrlen
,
2333 [QIBPORTCNTR_UNSUPVL
] = cr_txunsupvl
,
2334 [QIBPORTCNTR_EXCESSBUFOVFL
] = 0xffff,
2335 [QIBPORTCNTR_ERRLINK
] = cr_errlink
,
2336 [QIBPORTCNTR_IBLINKDOWN
] = cr_iblinkdown
,
2337 [QIBPORTCNTR_IBLINKERRRECOV
] = cr_iblinkerrrecov
,
2338 [QIBPORTCNTR_LLI
] = 0xffff,
2339 [QIBPORTCNTR_PSINTERVAL
] = 0xffff,
2340 [QIBPORTCNTR_PSSTART
] = 0xffff,
2341 [QIBPORTCNTR_PSSTAT
] = 0xffff,
2342 [QIBPORTCNTR_VL15PKTDROP
] = 0xffff,
2343 [QIBPORTCNTR_ERRPKEY
] = cr_errpkey
,
2344 [QIBPORTCNTR_KHDROVFL
] = 0xffff,
2347 if (reg
>= ARRAY_SIZE(xlator
)) {
2348 qib_devinfo(ppd
->dd
->pcidev
,
2349 "Unimplemented portcounter %u\n", reg
);
2354 /* handle counters requests not implemented as chip counters */
2355 if (reg
== QIBPORTCNTR_LLI
)
2356 ret
= dd
->cspec
->lli_errs
;
2357 else if (reg
== QIBPORTCNTR_EXCESSBUFOVFL
)
2358 ret
= dd
->cspec
->overrun_thresh_errs
;
2359 else if (reg
== QIBPORTCNTR_KHDROVFL
) {
2362 /* sum over all kernel contexts */
2363 for (i
= 0; i
< dd
->first_user_ctxt
; i
++)
2364 ret
+= read_6120_creg32(dd
, cr_portovfl
+ i
);
2365 } else if (reg
== QIBPORTCNTR_PSSTAT
)
2366 ret
= dd
->cspec
->pma_sample_status
;
2371 * only fast incrementing counters are 64bit; use 32 bit reads to
2372 * avoid two independent reads when on opteron
2374 if (creg
== cr_wordsend
|| creg
== cr_wordrcv
||
2375 creg
== cr_pktsend
|| creg
== cr_pktrcv
)
2376 ret
= read_6120_creg(dd
, creg
);
2378 ret
= read_6120_creg32(dd
, creg
);
2379 if (creg
== cr_ibsymbolerr
) {
2380 if (dd
->cspec
->ibdeltainprog
)
2381 ret
-= ret
- dd
->cspec
->ibsymsnap
;
2382 ret
-= dd
->cspec
->ibsymdelta
;
2383 } else if (creg
== cr_iblinkerrrecov
) {
2384 if (dd
->cspec
->ibdeltainprog
)
2385 ret
-= ret
- dd
->cspec
->iblnkerrsnap
;
2386 ret
-= dd
->cspec
->iblnkerrdelta
;
2388 if (reg
== QIBPORTCNTR_RXDROPPKT
) /* add special cased count */
2389 ret
+= dd
->cspec
->rxfc_unsupvl_errs
;
2396 * Device counter names (not port-specific), one line per stat,
2397 * single string. Used by utilities like ipathstats to print the stats
2398 * in a way which works for different versions of drivers, without changing
2399 * the utility. Names need to be 12 chars or less (w/o newline), for proper
2400 * display by utility.
2401 * Non-error counters are first.
2402 * Start of "error" conters is indicated by a leading "E " on the first
2403 * "error" counter, and doesn't count in label length.
2404 * The EgrOvfl list needs to be last so we truncate them at the configured
2405 * context count for the device.
2406 * cntr6120indices contains the corresponding register indices.
2408 static const char cntr6120names
[] =
2419 static const size_t cntr6120indices
[] = {
2432 * same as cntr6120names and cntr6120indices, but for port-specific counters.
2433 * portcntr6120indices is somewhat complicated by some registers needing
2434 * adjustments of various kinds, and those are ORed with _PORT_VIRT_FLAG
2436 static const char portcntr6120names
[] =
2468 #define _PORT_VIRT_FLAG 0x8000 /* "virtual", need adjustments */
2469 static const size_t portcntr6120indices
[] = {
2470 QIBPORTCNTR_PKTSEND
| _PORT_VIRT_FLAG
,
2472 QIBPORTCNTR_WORDSEND
| _PORT_VIRT_FLAG
,
2473 QIBPORTCNTR_PKTRCV
| _PORT_VIRT_FLAG
,
2475 QIBPORTCNTR_WORDRCV
| _PORT_VIRT_FLAG
,
2476 QIBPORTCNTR_SENDSTALL
| _PORT_VIRT_FLAG
,
2478 QIBPORTCNTR_IBLINKDOWN
| _PORT_VIRT_FLAG
,
2479 QIBPORTCNTR_IBLINKERRRECOV
| _PORT_VIRT_FLAG
,
2480 QIBPORTCNTR_ERRLINK
| _PORT_VIRT_FLAG
,
2481 QIBPORTCNTR_IBSYMBOLERR
| _PORT_VIRT_FLAG
,
2482 QIBPORTCNTR_LLI
| _PORT_VIRT_FLAG
,
2483 QIBPORTCNTR_BADFORMAT
| _PORT_VIRT_FLAG
,
2484 QIBPORTCNTR_ERR_RLEN
| _PORT_VIRT_FLAG
,
2485 QIBPORTCNTR_RCVOVFL
| _PORT_VIRT_FLAG
,
2486 QIBPORTCNTR_RCVEBP
| _PORT_VIRT_FLAG
,
2488 QIBPORTCNTR_ERRICRC
| _PORT_VIRT_FLAG
,
2489 QIBPORTCNTR_ERRLPCRC
| _PORT_VIRT_FLAG
,
2490 QIBPORTCNTR_ERRVCRC
| _PORT_VIRT_FLAG
,
2491 QIBPORTCNTR_INVALIDRLEN
| _PORT_VIRT_FLAG
,
2492 QIBPORTCNTR_ERRPKEY
| _PORT_VIRT_FLAG
,
2493 QIBPORTCNTR_RXDROPPKT
| _PORT_VIRT_FLAG
,
2501 /* do all the setup to make the counter reads efficient later */
2502 static void init_6120_cntrnames(struct qib_devdata
*dd
)
2507 for (i
= 0, s
= (char *)cntr6120names
; s
&& j
<= dd
->cfgctxts
;
2509 /* we always have at least one counter before the egrovfl */
2510 if (!j
&& !strncmp("Ctxt0EgrOvfl", s
+ 1, 12))
2512 s
= strchr(s
+ 1, '\n');
2516 dd
->cspec
->ncntrs
= i
;
2518 /* full list; size is without terminating null */
2519 dd
->cspec
->cntrnamelen
= sizeof(cntr6120names
) - 1;
2521 dd
->cspec
->cntrnamelen
= 1 + s
- cntr6120names
;
2522 dd
->cspec
->cntrs
= kmalloc(dd
->cspec
->ncntrs
2523 * sizeof(u64
), GFP_KERNEL
);
2524 if (!dd
->cspec
->cntrs
)
2525 qib_dev_err(dd
, "Failed allocation for counters\n");
2527 for (i
= 0, s
= (char *)portcntr6120names
; s
; i
++)
2528 s
= strchr(s
+ 1, '\n');
2529 dd
->cspec
->nportcntrs
= i
- 1;
2530 dd
->cspec
->portcntrnamelen
= sizeof(portcntr6120names
) - 1;
2531 dd
->cspec
->portcntrs
= kmalloc(dd
->cspec
->nportcntrs
2532 * sizeof(u64
), GFP_KERNEL
);
2533 if (!dd
->cspec
->portcntrs
)
2534 qib_dev_err(dd
, "Failed allocation for portcounters\n");
2537 static u32
qib_read_6120cntrs(struct qib_devdata
*dd
, loff_t pos
, char **namep
,
2543 ret
= dd
->cspec
->cntrnamelen
;
2545 ret
= 0; /* final read after getting everything */
2547 *namep
= (char *)cntr6120names
;
2549 u64
*cntr
= dd
->cspec
->cntrs
;
2552 ret
= dd
->cspec
->ncntrs
* sizeof(u64
);
2553 if (!cntr
|| pos
>= ret
) {
2554 /* everything read, or couldn't get memory */
2559 ret
= 0; /* final read after getting everything */
2563 for (i
= 0; i
< dd
->cspec
->ncntrs
; i
++)
2564 *cntr
++ = read_6120_creg32(dd
, cntr6120indices
[i
]);
2570 static u32
qib_read_6120portcntrs(struct qib_devdata
*dd
, loff_t pos
, u32 port
,
2571 char **namep
, u64
**cntrp
)
2576 ret
= dd
->cspec
->portcntrnamelen
;
2578 ret
= 0; /* final read after getting everything */
2580 *namep
= (char *)portcntr6120names
;
2582 u64
*cntr
= dd
->cspec
->portcntrs
;
2583 struct qib_pportdata
*ppd
= &dd
->pport
[port
];
2586 ret
= dd
->cspec
->nportcntrs
* sizeof(u64
);
2587 if (!cntr
|| pos
>= ret
) {
2588 /* everything read, or couldn't get memory */
2593 for (i
= 0; i
< dd
->cspec
->nportcntrs
; i
++) {
2594 if (portcntr6120indices
[i
] & _PORT_VIRT_FLAG
)
2595 *cntr
++ = qib_portcntr_6120(ppd
,
2596 portcntr6120indices
[i
] &
2599 *cntr
++ = read_6120_creg32(dd
,
2600 portcntr6120indices
[i
]);
2607 static void qib_chk_6120_errormask(struct qib_devdata
*dd
)
2611 unsigned long errormask
;
2612 unsigned long hwerrs
;
2614 if (!dd
->cspec
->errormask
|| !(dd
->flags
& QIB_INITTED
))
2617 errormask
= qib_read_kreg64(dd
, kr_errmask
);
2619 if (errormask
== dd
->cspec
->errormask
)
2623 hwerrs
= qib_read_kreg64(dd
, kr_hwerrstatus
);
2624 ctrl
= qib_read_kreg32(dd
, kr_control
);
2626 qib_write_kreg(dd
, kr_errmask
,
2627 dd
->cspec
->errormask
);
2629 if ((hwerrs
& dd
->cspec
->hwerrmask
) ||
2630 (ctrl
& QLOGIC_IB_C_FREEZEMODE
)) {
2631 qib_write_kreg(dd
, kr_hwerrclear
, 0ULL);
2632 qib_write_kreg(dd
, kr_errclear
, 0ULL);
2633 /* force re-interrupt of pending events, just in case */
2634 qib_write_kreg(dd
, kr_intclear
, 0ULL);
2635 qib_devinfo(dd
->pcidev
,
2636 "errormask fixed(%u) %lx->%lx, ctrl %x hwerr %lx\n",
2637 fixed
, errormask
, (unsigned long)dd
->cspec
->errormask
,
2643 * qib_get_faststats - get word counters from chip before they overflow
2644 * @opaque - contains a pointer to the qlogic_ib device qib_devdata
2646 * This needs more work; in particular, decision on whether we really
2647 * need traffic_wds done the way it is
2648 * called from add_timer
2650 static void qib_get_6120_faststats(unsigned long opaque
)
2652 struct qib_devdata
*dd
= (struct qib_devdata
*) opaque
;
2653 struct qib_pportdata
*ppd
= dd
->pport
;
2654 unsigned long flags
;
2658 * don't access the chip while running diags, or memory diags can
2661 if (!(dd
->flags
& QIB_INITTED
) || dd
->diag_client
)
2662 /* but re-arm the timer, for diags case; won't hurt other */
2666 * We now try to maintain an activity timer, based on traffic
2667 * exceeding a threshold, so we need to check the word-counts
2668 * even if they are 64-bit.
2670 traffic_wds
= qib_portcntr_6120(ppd
, cr_wordsend
) +
2671 qib_portcntr_6120(ppd
, cr_wordrcv
);
2672 spin_lock_irqsave(&dd
->eep_st_lock
, flags
);
2673 traffic_wds
-= dd
->traffic_wds
;
2674 dd
->traffic_wds
+= traffic_wds
;
2675 if (traffic_wds
>= QIB_TRAFFIC_ACTIVE_THRESHOLD
)
2676 atomic_add(5, &dd
->active_time
); /* S/B #define */
2677 spin_unlock_irqrestore(&dd
->eep_st_lock
, flags
);
2679 qib_chk_6120_errormask(dd
);
2681 mod_timer(&dd
->stats_timer
, jiffies
+ HZ
* ACTIVITY_TIMER
);
2684 /* no interrupt fallback for these chips */
2685 static int qib_6120_nointr_fallback(struct qib_devdata
*dd
)
2691 * reset the XGXS (between serdes and IBC). Slightly less intrusive
2692 * than resetting the IBC or external link state, and useful in some
2693 * cases to cause some retraining. To do this right, we reset IBC
2696 static void qib_6120_xgxs_reset(struct qib_pportdata
*ppd
)
2699 struct qib_devdata
*dd
= ppd
->dd
;
2701 prev_val
= qib_read_kreg64(dd
, kr_xgxs_cfg
);
2702 val
= prev_val
| QLOGIC_IB_XGXS_RESET
;
2703 prev_val
&= ~QLOGIC_IB_XGXS_RESET
; /* be sure */
2704 qib_write_kreg(dd
, kr_control
,
2705 dd
->control
& ~QLOGIC_IB_C_LINKENABLE
);
2706 qib_write_kreg(dd
, kr_xgxs_cfg
, val
);
2707 qib_read_kreg32(dd
, kr_scratch
);
2708 qib_write_kreg(dd
, kr_xgxs_cfg
, prev_val
);
2709 qib_write_kreg(dd
, kr_control
, dd
->control
);
2712 static int qib_6120_get_ib_cfg(struct qib_pportdata
*ppd
, int which
)
2717 case QIB_IB_CFG_LWID
:
2718 ret
= ppd
->link_width_active
;
2721 case QIB_IB_CFG_SPD
:
2722 ret
= ppd
->link_speed_active
;
2725 case QIB_IB_CFG_LWID_ENB
:
2726 ret
= ppd
->link_width_enabled
;
2729 case QIB_IB_CFG_SPD_ENB
:
2730 ret
= ppd
->link_speed_enabled
;
2733 case QIB_IB_CFG_OP_VLS
:
2734 ret
= ppd
->vls_operational
;
2737 case QIB_IB_CFG_VL_HIGH_CAP
:
2741 case QIB_IB_CFG_VL_LOW_CAP
:
2745 case QIB_IB_CFG_OVERRUN_THRESH
: /* IB overrun threshold */
2746 ret
= SYM_FIELD(ppd
->dd
->cspec
->ibcctrl
, IBCCtrl
,
2750 case QIB_IB_CFG_PHYERR_THRESH
: /* IB PHY error threshold */
2751 ret
= SYM_FIELD(ppd
->dd
->cspec
->ibcctrl
, IBCCtrl
,
2755 case QIB_IB_CFG_LINKDEFAULT
: /* IB link default (sleep/poll) */
2756 /* will only take effect when the link state changes */
2757 ret
= (ppd
->dd
->cspec
->ibcctrl
&
2758 SYM_MASK(IBCCtrl
, LinkDownDefaultState
)) ?
2759 IB_LINKINITCMD_SLEEP
: IB_LINKINITCMD_POLL
;
2762 case QIB_IB_CFG_HRTBT
: /* Get Heartbeat off/enable/auto */
2763 ret
= 0; /* no heartbeat on this chip */
2766 case QIB_IB_CFG_PMA_TICKS
:
2767 ret
= 250; /* 1 usec. */
2778 * We assume range checking is already done, if needed.
2780 static int qib_6120_set_ib_cfg(struct qib_pportdata
*ppd
, int which
, u32 val
)
2782 struct qib_devdata
*dd
= ppd
->dd
;
2788 case QIB_IB_CFG_LWID_ENB
:
2789 ppd
->link_width_enabled
= val
;
2792 case QIB_IB_CFG_SPD_ENB
:
2793 ppd
->link_speed_enabled
= val
;
2796 case QIB_IB_CFG_OVERRUN_THRESH
: /* IB overrun threshold */
2797 val64
= SYM_FIELD(dd
->cspec
->ibcctrl
, IBCCtrl
,
2800 dd
->cspec
->ibcctrl
&=
2801 ~SYM_MASK(IBCCtrl
, OverrunThreshold
);
2802 dd
->cspec
->ibcctrl
|= (u64
) val
<<
2803 SYM_LSB(IBCCtrl
, OverrunThreshold
);
2804 qib_write_kreg(dd
, kr_ibcctrl
, dd
->cspec
->ibcctrl
);
2805 qib_write_kreg(dd
, kr_scratch
, 0);
2809 case QIB_IB_CFG_PHYERR_THRESH
: /* IB PHY error threshold */
2810 val64
= SYM_FIELD(dd
->cspec
->ibcctrl
, IBCCtrl
,
2813 dd
->cspec
->ibcctrl
&=
2814 ~SYM_MASK(IBCCtrl
, PhyerrThreshold
);
2815 dd
->cspec
->ibcctrl
|= (u64
) val
<<
2816 SYM_LSB(IBCCtrl
, PhyerrThreshold
);
2817 qib_write_kreg(dd
, kr_ibcctrl
, dd
->cspec
->ibcctrl
);
2818 qib_write_kreg(dd
, kr_scratch
, 0);
2822 case QIB_IB_CFG_PKEYS
: /* update pkeys */
2823 val64
= (u64
) ppd
->pkeys
[0] | ((u64
) ppd
->pkeys
[1] << 16) |
2824 ((u64
) ppd
->pkeys
[2] << 32) |
2825 ((u64
) ppd
->pkeys
[3] << 48);
2826 qib_write_kreg(dd
, kr_partitionkey
, val64
);
2829 case QIB_IB_CFG_LINKDEFAULT
: /* IB link default (sleep/poll) */
2830 /* will only take effect when the link state changes */
2831 if (val
== IB_LINKINITCMD_POLL
)
2832 dd
->cspec
->ibcctrl
&=
2833 ~SYM_MASK(IBCCtrl
, LinkDownDefaultState
);
2835 dd
->cspec
->ibcctrl
|=
2836 SYM_MASK(IBCCtrl
, LinkDownDefaultState
);
2837 qib_write_kreg(dd
, kr_ibcctrl
, dd
->cspec
->ibcctrl
);
2838 qib_write_kreg(dd
, kr_scratch
, 0);
2841 case QIB_IB_CFG_MTU
: /* update the MTU in IBC */
2843 * Update our housekeeping variables, and set IBC max
2844 * size, same as init code; max IBC is max we allow in
2845 * buffer, less the qword pbc, plus 1 for ICRC, in dwords
2846 * Set even if it's unchanged, print debug message only
2849 val
= (ppd
->ibmaxlen
>> 2) + 1;
2850 dd
->cspec
->ibcctrl
&= ~SYM_MASK(IBCCtrl
, MaxPktLen
);
2851 dd
->cspec
->ibcctrl
|= (u64
)val
<<
2852 SYM_LSB(IBCCtrl
, MaxPktLen
);
2853 qib_write_kreg(dd
, kr_ibcctrl
, dd
->cspec
->ibcctrl
);
2854 qib_write_kreg(dd
, kr_scratch
, 0);
2857 case QIB_IB_CFG_LSTATE
: /* set the IB link state */
2858 switch (val
& 0xffff0000) {
2859 case IB_LINKCMD_DOWN
:
2860 lcmd
= QLOGIC_IB_IBCC_LINKCMD_DOWN
;
2861 if (!dd
->cspec
->ibdeltainprog
) {
2862 dd
->cspec
->ibdeltainprog
= 1;
2863 dd
->cspec
->ibsymsnap
=
2864 read_6120_creg32(dd
, cr_ibsymbolerr
);
2865 dd
->cspec
->iblnkerrsnap
=
2866 read_6120_creg32(dd
, cr_iblinkerrrecov
);
2870 case IB_LINKCMD_ARMED
:
2871 lcmd
= QLOGIC_IB_IBCC_LINKCMD_ARMED
;
2874 case IB_LINKCMD_ACTIVE
:
2875 lcmd
= QLOGIC_IB_IBCC_LINKCMD_ACTIVE
;
2880 qib_dev_err(dd
, "bad linkcmd req 0x%x\n", val
>> 16);
2883 switch (val
& 0xffff) {
2884 case IB_LINKINITCMD_NOP
:
2888 case IB_LINKINITCMD_POLL
:
2889 licmd
= QLOGIC_IB_IBCC_LINKINITCMD_POLL
;
2892 case IB_LINKINITCMD_SLEEP
:
2893 licmd
= QLOGIC_IB_IBCC_LINKINITCMD_SLEEP
;
2896 case IB_LINKINITCMD_DISABLE
:
2897 licmd
= QLOGIC_IB_IBCC_LINKINITCMD_DISABLE
;
2902 qib_dev_err(dd
, "bad linkinitcmd req 0x%x\n",
2906 qib_set_ib_6120_lstate(ppd
, lcmd
, licmd
);
2909 case QIB_IB_CFG_HRTBT
:
2920 static int qib_6120_set_loopback(struct qib_pportdata
*ppd
, const char *what
)
2923 if (!strncmp(what
, "ibc", 3)) {
2924 ppd
->dd
->cspec
->ibcctrl
|= SYM_MASK(IBCCtrl
, Loopback
);
2925 qib_devinfo(ppd
->dd
->pcidev
, "Enabling IB%u:%u IBC loopback\n",
2926 ppd
->dd
->unit
, ppd
->port
);
2927 } else if (!strncmp(what
, "off", 3)) {
2928 ppd
->dd
->cspec
->ibcctrl
&= ~SYM_MASK(IBCCtrl
, Loopback
);
2929 qib_devinfo(ppd
->dd
->pcidev
, "Disabling IB%u:%u IBC loopback "
2930 "(normal)\n", ppd
->dd
->unit
, ppd
->port
);
2934 qib_write_kreg(ppd
->dd
, kr_ibcctrl
, ppd
->dd
->cspec
->ibcctrl
);
2935 qib_write_kreg(ppd
->dd
, kr_scratch
, 0);
2940 static void pma_6120_timer(unsigned long data
)
2942 struct qib_pportdata
*ppd
= (struct qib_pportdata
*)data
;
2943 struct qib_chip_specific
*cs
= ppd
->dd
->cspec
;
2944 struct qib_ibport
*ibp
= &ppd
->ibport_data
;
2945 unsigned long flags
;
2947 spin_lock_irqsave(&ibp
->lock
, flags
);
2948 if (cs
->pma_sample_status
== IB_PMA_SAMPLE_STATUS_STARTED
) {
2949 cs
->pma_sample_status
= IB_PMA_SAMPLE_STATUS_RUNNING
;
2950 qib_snapshot_counters(ppd
, &cs
->sword
, &cs
->rword
,
2951 &cs
->spkts
, &cs
->rpkts
, &cs
->xmit_wait
);
2952 mod_timer(&cs
->pma_timer
,
2953 jiffies
+ usecs_to_jiffies(ibp
->pma_sample_interval
));
2954 } else if (cs
->pma_sample_status
== IB_PMA_SAMPLE_STATUS_RUNNING
) {
2955 u64 ta
, tb
, tc
, td
, te
;
2957 cs
->pma_sample_status
= IB_PMA_SAMPLE_STATUS_DONE
;
2958 qib_snapshot_counters(ppd
, &ta
, &tb
, &tc
, &td
, &te
);
2960 cs
->sword
= ta
- cs
->sword
;
2961 cs
->rword
= tb
- cs
->rword
;
2962 cs
->spkts
= tc
- cs
->spkts
;
2963 cs
->rpkts
= td
- cs
->rpkts
;
2964 cs
->xmit_wait
= te
- cs
->xmit_wait
;
2966 spin_unlock_irqrestore(&ibp
->lock
, flags
);
2970 * Note that the caller has the ibp->lock held.
2972 static void qib_set_cntr_6120_sample(struct qib_pportdata
*ppd
, u32 intv
,
2975 struct qib_chip_specific
*cs
= ppd
->dd
->cspec
;
2977 if (start
&& intv
) {
2978 cs
->pma_sample_status
= IB_PMA_SAMPLE_STATUS_STARTED
;
2979 mod_timer(&cs
->pma_timer
, jiffies
+ usecs_to_jiffies(start
));
2981 cs
->pma_sample_status
= IB_PMA_SAMPLE_STATUS_RUNNING
;
2982 qib_snapshot_counters(ppd
, &cs
->sword
, &cs
->rword
,
2983 &cs
->spkts
, &cs
->rpkts
, &cs
->xmit_wait
);
2984 mod_timer(&cs
->pma_timer
, jiffies
+ usecs_to_jiffies(intv
));
2986 cs
->pma_sample_status
= IB_PMA_SAMPLE_STATUS_DONE
;
2995 static u32
qib_6120_iblink_state(u64 ibcs
)
2997 u32 state
= (u32
)SYM_FIELD(ibcs
, IBCStatus
, LinkState
);
3000 case IB_6120_L_STATE_INIT
:
3001 state
= IB_PORT_INIT
;
3003 case IB_6120_L_STATE_ARM
:
3004 state
= IB_PORT_ARMED
;
3006 case IB_6120_L_STATE_ACTIVE
:
3008 case IB_6120_L_STATE_ACT_DEFER
:
3009 state
= IB_PORT_ACTIVE
;
3011 default: /* fall through */
3012 case IB_6120_L_STATE_DOWN
:
3013 state
= IB_PORT_DOWN
;
3019 /* returns the IBTA port state, rather than the IBC link training state */
3020 static u8
qib_6120_phys_portstate(u64 ibcs
)
3022 u8 state
= (u8
)SYM_FIELD(ibcs
, IBCStatus
, LinkTrainingState
);
3023 return qib_6120_physportstate
[state
];
3026 static int qib_6120_ib_updown(struct qib_pportdata
*ppd
, int ibup
, u64 ibcs
)
3028 unsigned long flags
;
3030 spin_lock_irqsave(&ppd
->lflags_lock
, flags
);
3031 ppd
->lflags
&= ~QIBL_IB_FORCE_NOTIFY
;
3032 spin_unlock_irqrestore(&ppd
->lflags_lock
, flags
);
3035 if (ppd
->dd
->cspec
->ibdeltainprog
) {
3036 ppd
->dd
->cspec
->ibdeltainprog
= 0;
3037 ppd
->dd
->cspec
->ibsymdelta
+=
3038 read_6120_creg32(ppd
->dd
, cr_ibsymbolerr
) -
3039 ppd
->dd
->cspec
->ibsymsnap
;
3040 ppd
->dd
->cspec
->iblnkerrdelta
+=
3041 read_6120_creg32(ppd
->dd
, cr_iblinkerrrecov
) -
3042 ppd
->dd
->cspec
->iblnkerrsnap
;
3046 ppd
->dd
->cspec
->lli_counter
= 0;
3047 if (!ppd
->dd
->cspec
->ibdeltainprog
) {
3048 ppd
->dd
->cspec
->ibdeltainprog
= 1;
3049 ppd
->dd
->cspec
->ibsymsnap
=
3050 read_6120_creg32(ppd
->dd
, cr_ibsymbolerr
);
3051 ppd
->dd
->cspec
->iblnkerrsnap
=
3052 read_6120_creg32(ppd
->dd
, cr_iblinkerrrecov
);
3057 qib_6120_setup_setextled(ppd
, ibup
);
3062 /* Does read/modify/write to appropriate registers to
3063 * set output and direction bits selected by mask.
3064 * these are in their canonical postions (e.g. lsb of
3065 * dir will end up in D48 of extctrl on existing chips).
3066 * returns contents of GP Inputs.
3068 static int gpio_6120_mod(struct qib_devdata
*dd
, u32 out
, u32 dir
, u32 mask
)
3070 u64 read_val
, new_out
;
3071 unsigned long flags
;
3074 /* some bits being written, lock access to GPIO */
3077 spin_lock_irqsave(&dd
->cspec
->gpio_lock
, flags
);
3078 dd
->cspec
->extctrl
&= ~((u64
)mask
<< SYM_LSB(EXTCtrl
, GPIOOe
));
3079 dd
->cspec
->extctrl
|= ((u64
) dir
<< SYM_LSB(EXTCtrl
, GPIOOe
));
3080 new_out
= (dd
->cspec
->gpio_out
& ~mask
) | out
;
3082 qib_write_kreg(dd
, kr_extctrl
, dd
->cspec
->extctrl
);
3083 qib_write_kreg(dd
, kr_gpio_out
, new_out
);
3084 dd
->cspec
->gpio_out
= new_out
;
3085 spin_unlock_irqrestore(&dd
->cspec
->gpio_lock
, flags
);
3088 * It is unlikely that a read at this time would get valid
3089 * data on a pin whose direction line was set in the same
3090 * call to this function. We include the read here because
3091 * that allows us to potentially combine a change on one pin with
3092 * a read on another, and because the old code did something like
3095 read_val
= qib_read_kreg64(dd
, kr_extstatus
);
3096 return SYM_FIELD(read_val
, EXTStatus
, GPIOIn
);
3100 * Read fundamental info we need to use the chip. These are
3101 * the registers that describe chip capabilities, and are
3102 * saved in shadow registers.
3104 static void get_6120_chip_params(struct qib_devdata
*dd
)
3110 dd
->uregbase
= qib_read_kreg32(dd
, kr_userregbase
);
3112 dd
->rcvtidcnt
= qib_read_kreg32(dd
, kr_rcvtidcnt
);
3113 dd
->rcvtidbase
= qib_read_kreg32(dd
, kr_rcvtidbase
);
3114 dd
->rcvegrbase
= qib_read_kreg32(dd
, kr_rcvegrbase
);
3115 dd
->palign
= qib_read_kreg32(dd
, kr_palign
);
3116 dd
->piobufbase
= qib_read_kreg64(dd
, kr_sendpiobufbase
);
3117 dd
->pio2k_bufbase
= dd
->piobufbase
& 0xffffffff;
3119 dd
->rcvhdrcnt
= qib_read_kreg32(dd
, kr_rcvegrcnt
);
3121 val
= qib_read_kreg64(dd
, kr_sendpiosize
);
3122 dd
->piosize2k
= val
& ~0U;
3123 dd
->piosize4k
= val
>> 32;
3125 mtu
= ib_mtu_enum_to_int(qib_ibmtu
);
3127 mtu
= QIB_DEFAULT_MTU
;
3128 dd
->pport
->ibmtu
= (u32
)mtu
;
3130 val
= qib_read_kreg64(dd
, kr_sendpiobufcnt
);
3131 dd
->piobcnt2k
= val
& ~0U;
3132 dd
->piobcnt4k
= val
>> 32;
3133 /* these may be adjusted in init_chip_wc_pat() */
3134 dd
->pio2kbase
= (u32 __iomem
*)
3135 (((char __iomem
*)dd
->kregbase
) + dd
->pio2k_bufbase
);
3136 if (dd
->piobcnt4k
) {
3137 dd
->pio4kbase
= (u32 __iomem
*)
3138 (((char __iomem
*) dd
->kregbase
) +
3139 (dd
->piobufbase
>> 32));
3141 * 4K buffers take 2 pages; we use roundup just to be
3142 * paranoid; we calculate it once here, rather than on
3145 dd
->align4k
= ALIGN(dd
->piosize4k
, dd
->palign
);
3148 piobufs
= dd
->piobcnt4k
+ dd
->piobcnt2k
;
3150 dd
->pioavregs
= ALIGN(piobufs
, sizeof(u64
) * BITS_PER_BYTE
/ 2) /
3151 (sizeof(u64
) * BITS_PER_BYTE
/ 2);
3155 * The chip base addresses in cspec and cpspec have to be set
3156 * after possible init_chip_wc_pat(), rather than in
3157 * get_6120_chip_params(), so split out as separate function
3159 static void set_6120_baseaddrs(struct qib_devdata
*dd
)
3162 cregbase
= qib_read_kreg32(dd
, kr_counterregbase
);
3163 dd
->cspec
->cregbase
= (u64 __iomem
*)
3164 ((char __iomem
*) dd
->kregbase
+ cregbase
);
3166 dd
->egrtidbase
= (u64 __iomem
*)
3167 ((char __iomem
*) dd
->kregbase
+ dd
->rcvegrbase
);
3171 * Write the final few registers that depend on some of the
3172 * init setup. Done late in init, just before bringing up
3175 static int qib_late_6120_initreg(struct qib_devdata
*dd
)
3180 qib_write_kreg(dd
, kr_rcvhdrentsize
, dd
->rcvhdrentsize
);
3181 qib_write_kreg(dd
, kr_rcvhdrsize
, dd
->rcvhdrsize
);
3182 qib_write_kreg(dd
, kr_rcvhdrcnt
, dd
->rcvhdrcnt
);
3183 qib_write_kreg(dd
, kr_sendpioavailaddr
, dd
->pioavailregs_phys
);
3184 val
= qib_read_kreg64(dd
, kr_sendpioavailaddr
);
3185 if (val
!= dd
->pioavailregs_phys
) {
3186 qib_dev_err(dd
, "Catastrophic software error, "
3187 "SendPIOAvailAddr written as %lx, "
3188 "read back as %llx\n",
3189 (unsigned long) dd
->pioavailregs_phys
,
3190 (unsigned long long) val
);
3196 static int init_6120_variables(struct qib_devdata
*dd
)
3199 struct qib_pportdata
*ppd
;
3202 ppd
= (struct qib_pportdata
*)(dd
+ 1);
3206 dd
->cspec
= (struct qib_chip_specific
*)(ppd
+ dd
->num_pports
);
3207 ppd
->cpspec
= NULL
; /* not used in this chip */
3209 spin_lock_init(&dd
->cspec
->kernel_tid_lock
);
3210 spin_lock_init(&dd
->cspec
->user_tid_lock
);
3211 spin_lock_init(&dd
->cspec
->rcvmod_lock
);
3212 spin_lock_init(&dd
->cspec
->gpio_lock
);
3214 /* we haven't yet set QIB_PRESENT, so use read directly */
3215 dd
->revision
= readq(&dd
->kregbase
[kr_revision
]);
3217 if ((dd
->revision
& 0xffffffffU
) == 0xffffffffU
) {
3218 qib_dev_err(dd
, "Revision register read failure, "
3219 "giving up initialization\n");
3223 dd
->flags
|= QIB_PRESENT
; /* now register routines work */
3225 dd
->majrev
= (u8
) SYM_FIELD(dd
->revision
, Revision_R
,
3227 dd
->minrev
= (u8
) SYM_FIELD(dd
->revision
, Revision_R
,
3230 get_6120_chip_params(dd
);
3231 pe_boardname(dd
); /* fill in boardname */
3234 * GPIO bits for TWSI data and clock,
3235 * used for serial EEPROM.
3237 dd
->gpio_sda_num
= _QIB_GPIO_SDA_NUM
;
3238 dd
->gpio_scl_num
= _QIB_GPIO_SCL_NUM
;
3239 dd
->twsi_eeprom_dev
= QIB_TWSI_NO_DEV
;
3241 if (qib_unordered_wc())
3242 dd
->flags
|= QIB_PIO_FLUSH_WC
;
3245 * EEPROM error log 0 is TXE Parity errors. 1 is RXE Parity.
3246 * 2 is Some Misc, 3 is reserved for future.
3248 dd
->eep_st_masks
[0].hwerrs_to_log
= HWE_MASK(TXEMemParityErr
);
3250 /* Ignore errors in PIO/PBC on systems with unordered write-combining */
3251 if (qib_unordered_wc())
3252 dd
->eep_st_masks
[0].hwerrs_to_log
&= ~TXE_PIO_PARITY
;
3254 dd
->eep_st_masks
[1].hwerrs_to_log
= HWE_MASK(RXEMemParityErr
);
3256 dd
->eep_st_masks
[2].errs_to_log
= ERR_MASK(ResetNegated
);
3258 qib_init_pportdata(ppd
, dd
, 0, 1);
3259 ppd
->link_width_supported
= IB_WIDTH_1X
| IB_WIDTH_4X
;
3260 ppd
->link_speed_supported
= QIB_IB_SDR
;
3261 ppd
->link_width_enabled
= IB_WIDTH_4X
;
3262 ppd
->link_speed_enabled
= ppd
->link_speed_supported
;
3263 /* these can't change for this chip, so set once */
3264 ppd
->link_width_active
= ppd
->link_width_enabled
;
3265 ppd
->link_speed_active
= ppd
->link_speed_enabled
;
3266 ppd
->vls_supported
= IB_VL_VL0
;
3267 ppd
->vls_operational
= ppd
->vls_supported
;
3269 dd
->rcvhdrentsize
= QIB_RCVHDR_ENTSIZE
;
3270 dd
->rcvhdrsize
= QIB_DFLT_RCVHDRSIZE
;
3273 /* we always allocate at least 2048 bytes for eager buffers */
3274 ret
= ib_mtu_enum_to_int(qib_ibmtu
);
3275 dd
->rcvegrbufsize
= ret
!= -1 ? max(ret
, 2048) : QIB_DEFAULT_MTU
;
3277 qib_6120_tidtemplate(dd
);
3280 * We can request a receive interrupt for 1 or
3281 * more packets from current offset. For now, we set this
3282 * up for a single packet.
3284 dd
->rhdrhead_intr_off
= 1ULL << 32;
3286 /* setup the stats timer; the add_timer is done at end of init */
3287 init_timer(&dd
->stats_timer
);
3288 dd
->stats_timer
.function
= qib_get_6120_faststats
;
3289 dd
->stats_timer
.data
= (unsigned long) dd
;
3291 init_timer(&dd
->cspec
->pma_timer
);
3292 dd
->cspec
->pma_timer
.function
= pma_6120_timer
;
3293 dd
->cspec
->pma_timer
.data
= (unsigned long) ppd
;
3295 dd
->ureg_align
= qib_read_kreg32(dd
, kr_palign
);
3297 dd
->piosize2kmax_dwords
= dd
->piosize2k
>> 2;
3298 qib_6120_config_ctxts(dd
);
3299 qib_set_ctxtcnt(dd
);
3302 ret
= init_chip_wc_pat(dd
, 0);
3306 set_6120_baseaddrs(dd
); /* set chip access pointers now */
3312 qib_num_cfg_vls
= 1; /* if any 6120's, only one VL */
3314 ret
= qib_create_ctxts(dd
);
3315 init_6120_cntrnames(dd
);
3317 /* use all of 4KB buffers for the kernel, otherwise 16 */
3318 sbufs
= dd
->piobcnt4k
? dd
->piobcnt4k
: 16;
3320 dd
->lastctxt_piobuf
= dd
->piobcnt2k
+ dd
->piobcnt4k
- sbufs
;
3321 dd
->pbufsctxt
= dd
->lastctxt_piobuf
/
3322 (dd
->cfgctxts
- dd
->first_user_ctxt
);
3331 * For this chip, we want to use the same buffer every time
3332 * when we are trying to bring the link up (they are always VL15
3333 * packets). At that link state the packet should always go out immediately
3334 * (or at least be discarded at the tx interface if the link is down).
3335 * If it doesn't, and the buffer isn't available, that means some other
3336 * sender has gotten ahead of us, and is preventing our packet from going
3337 * out. In that case, we flush all packets, and try again. If that still
3338 * fails, we fail the request, and hope things work the next time around.
3340 * We don't need very complicated heuristics on whether the packet had
3341 * time to go out or not, since even at SDR 1X, it goes out in very short
3342 * time periods, covered by the chip reads done here and as part of the
3345 static u32 __iomem
*get_6120_link_buf(struct qib_pportdata
*ppd
, u32
*bnum
)
3348 u32 lbuf
= ppd
->dd
->piobcnt2k
+ ppd
->dd
->piobcnt4k
- 1;
3351 * always blip to get avail list updated, since it's almost
3352 * always needed, and is fairly cheap.
3354 sendctrl_6120_mod(ppd
->dd
->pport
, QIB_SENDCTRL_AVAIL_BLIP
);
3355 qib_read_kreg64(ppd
->dd
, kr_scratch
); /* extra chip flush */
3356 buf
= qib_getsendbuf_range(ppd
->dd
, bnum
, lbuf
, lbuf
);
3360 sendctrl_6120_mod(ppd
, QIB_SENDCTRL_DISARM_ALL
| QIB_SENDCTRL_FLUSH
|
3361 QIB_SENDCTRL_AVAIL_BLIP
);
3362 ppd
->dd
->upd_pio_shadow
= 1; /* update our idea of what's busy */
3363 qib_read_kreg64(ppd
->dd
, kr_scratch
); /* extra chip flush */
3364 buf
= qib_getsendbuf_range(ppd
->dd
, bnum
, lbuf
, lbuf
);
3369 static u32 __iomem
*qib_6120_getsendbuf(struct qib_pportdata
*ppd
, u64 pbc
,
3372 u32 first
, last
, plen
= pbc
& QIB_PBC_LENGTH_MASK
;
3373 struct qib_devdata
*dd
= ppd
->dd
;
3376 if (((pbc
>> 32) & PBC_6120_VL15_SEND_CTRL
) &&
3377 !(ppd
->lflags
& (QIBL_IB_AUTONEG_INPROG
| QIBL_LINKACTIVE
)))
3378 buf
= get_6120_link_buf(ppd
, pbufnum
);
3381 if ((plen
+ 1) > dd
->piosize2kmax_dwords
)
3382 first
= dd
->piobcnt2k
;
3385 /* try 4k if all 2k busy, so same last for both sizes */
3386 last
= dd
->piobcnt2k
+ dd
->piobcnt4k
- 1;
3387 buf
= qib_getsendbuf_range(dd
, pbufnum
, first
, last
);
3392 static int init_sdma_6120_regs(struct qib_pportdata
*ppd
)
3397 static u16
qib_sdma_6120_gethead(struct qib_pportdata
*ppd
)
3402 static int qib_sdma_6120_busy(struct qib_pportdata
*ppd
)
3407 static void qib_sdma_update_6120_tail(struct qib_pportdata
*ppd
, u16 tail
)
3411 static void qib_6120_sdma_sendctrl(struct qib_pportdata
*ppd
, unsigned op
)
3415 static void qib_sdma_set_6120_desc_cnt(struct qib_pportdata
*ppd
, unsigned cnt
)
3420 * the pbc doesn't need a VL15 indicator, but we need it for link_buf.
3421 * The chip ignores the bit if set.
3423 static u32
qib_6120_setpbc_control(struct qib_pportdata
*ppd
, u32 plen
,
3426 return vl
== 15 ? PBC_6120_VL15_SEND_CTRL
: 0;
3429 static void qib_6120_initvl15_bufs(struct qib_devdata
*dd
)
3433 static void qib_6120_init_ctxt(struct qib_ctxtdata
*rcd
)
3435 rcd
->rcvegrcnt
= rcd
->dd
->rcvhdrcnt
;
3436 rcd
->rcvegr_tid_base
= rcd
->ctxt
* rcd
->rcvegrcnt
;
3439 static void qib_6120_txchk_change(struct qib_devdata
*dd
, u32 start
,
3440 u32 len
, u32 avail
, struct qib_ctxtdata
*rcd
)
3444 static void writescratch(struct qib_devdata
*dd
, u32 val
)
3446 (void) qib_write_kreg(dd
, kr_scratch
, val
);
3449 static int qib_6120_tempsense_rd(struct qib_devdata
*dd
, int regnum
)
3454 /* Dummy function, as 6120 boards never disable EEPROM Write */
3455 static int qib_6120_eeprom_wen(struct qib_devdata
*dd
, int wen
)
3461 * qib_init_iba6120_funcs - set up the chip-specific function pointers
3462 * @pdev: pci_dev of the qlogic_ib device
3463 * @ent: pci_device_id matching this chip
3465 * This is global, and is called directly at init to set up the
3466 * chip-specific function pointers for later use.
3468 * It also allocates/partially-inits the qib_devdata struct for
3471 struct qib_devdata
*qib_init_iba6120_funcs(struct pci_dev
*pdev
,
3472 const struct pci_device_id
*ent
)
3474 struct qib_devdata
*dd
;
3477 dd
= qib_alloc_devdata(pdev
, sizeof(struct qib_pportdata
) +
3478 sizeof(struct qib_chip_specific
));
3482 dd
->f_bringup_serdes
= qib_6120_bringup_serdes
;
3483 dd
->f_cleanup
= qib_6120_setup_cleanup
;
3484 dd
->f_clear_tids
= qib_6120_clear_tids
;
3485 dd
->f_free_irq
= qib_6120_free_irq
;
3486 dd
->f_get_base_info
= qib_6120_get_base_info
;
3487 dd
->f_get_msgheader
= qib_6120_get_msgheader
;
3488 dd
->f_getsendbuf
= qib_6120_getsendbuf
;
3489 dd
->f_gpio_mod
= gpio_6120_mod
;
3490 dd
->f_eeprom_wen
= qib_6120_eeprom_wen
;
3491 dd
->f_hdrqempty
= qib_6120_hdrqempty
;
3492 dd
->f_ib_updown
= qib_6120_ib_updown
;
3493 dd
->f_init_ctxt
= qib_6120_init_ctxt
;
3494 dd
->f_initvl15_bufs
= qib_6120_initvl15_bufs
;
3495 dd
->f_intr_fallback
= qib_6120_nointr_fallback
;
3496 dd
->f_late_initreg
= qib_late_6120_initreg
;
3497 dd
->f_setpbc_control
= qib_6120_setpbc_control
;
3498 dd
->f_portcntr
= qib_portcntr_6120
;
3499 dd
->f_put_tid
= (dd
->minrev
>= 2) ?
3500 qib_6120_put_tid_2
:
3502 dd
->f_quiet_serdes
= qib_6120_quiet_serdes
;
3503 dd
->f_rcvctrl
= rcvctrl_6120_mod
;
3504 dd
->f_read_cntrs
= qib_read_6120cntrs
;
3505 dd
->f_read_portcntrs
= qib_read_6120portcntrs
;
3506 dd
->f_reset
= qib_6120_setup_reset
;
3507 dd
->f_init_sdma_regs
= init_sdma_6120_regs
;
3508 dd
->f_sdma_busy
= qib_sdma_6120_busy
;
3509 dd
->f_sdma_gethead
= qib_sdma_6120_gethead
;
3510 dd
->f_sdma_sendctrl
= qib_6120_sdma_sendctrl
;
3511 dd
->f_sdma_set_desc_cnt
= qib_sdma_set_6120_desc_cnt
;
3512 dd
->f_sdma_update_tail
= qib_sdma_update_6120_tail
;
3513 dd
->f_sendctrl
= sendctrl_6120_mod
;
3514 dd
->f_set_armlaunch
= qib_set_6120_armlaunch
;
3515 dd
->f_set_cntr_sample
= qib_set_cntr_6120_sample
;
3516 dd
->f_iblink_state
= qib_6120_iblink_state
;
3517 dd
->f_ibphys_portstate
= qib_6120_phys_portstate
;
3518 dd
->f_get_ib_cfg
= qib_6120_get_ib_cfg
;
3519 dd
->f_set_ib_cfg
= qib_6120_set_ib_cfg
;
3520 dd
->f_set_ib_loopback
= qib_6120_set_loopback
;
3521 dd
->f_set_intr_state
= qib_6120_set_intr_state
;
3522 dd
->f_setextled
= qib_6120_setup_setextled
;
3523 dd
->f_txchk_change
= qib_6120_txchk_change
;
3524 dd
->f_update_usrhead
= qib_update_6120_usrhead
;
3525 dd
->f_wantpiobuf_intr
= qib_wantpiobuf_6120_intr
;
3526 dd
->f_xgxs_reset
= qib_6120_xgxs_reset
;
3527 dd
->f_writescratch
= writescratch
;
3528 dd
->f_tempsense_rd
= qib_6120_tempsense_rd
;
3530 * Do remaining pcie setup and save pcie values in dd.
3531 * Any error printing is already done by the init code.
3532 * On return, we have the chip mapped and accessible,
3533 * but chip registers are not set up until start of
3534 * init_6120_variables.
3536 ret
= qib_pcie_ddinit(dd
, pdev
, ent
);
3540 /* initialize chip-specific variables */
3541 ret
= init_6120_variables(dd
);
3548 if (qib_pcie_params(dd
, 8, NULL
, NULL
))
3549 qib_dev_err(dd
, "Failed to setup PCIe or interrupts; "
3550 "continuing anyway\n");
3551 dd
->cspec
->irq
= pdev
->irq
; /* save IRQ */
3553 /* clear diagctrl register, in case diags were running and crashed */
3554 qib_write_kreg(dd
, kr_hwdiagctrl
, 0);
3556 if (qib_read_kreg64(dd
, kr_hwerrstatus
) &
3557 QLOGIC_IB_HWE_SERDESPLLFAILED
)
3558 qib_write_kreg(dd
, kr_hwerrclear
,
3559 QLOGIC_IB_HWE_SERDESPLLFAILED
);
3561 /* setup interrupt handler (interrupt type handled above) */
3562 qib_setup_6120_interrupt(dd
);
3563 /* Note that qpn_mask is set by qib_6120_config_ctxts() first */
3564 qib_6120_init_hwerrors(dd
);
3569 qib_pcie_ddcleanup(dd
);
3571 qib_free_devdata(dd
);