| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Ralph Campbell | 18417 | 97.97% | 1 | 3.33% |
| Mitko Haralanov | 126 | 0.67% | 1 | 3.33% |
| Mike Marciniszyn | 109 | 0.58% | 10 | 33.33% |
| Kees Cook | 54 | 0.29% | 2 | 6.67% |
| Michael J. Ruhl | 46 | 0.24% | 2 | 6.67% |
| Kamenee Arumugame | 11 | 0.06% | 1 | 3.33% |
| Ramkrishna Vepa | 8 | 0.04% | 1 | 3.33% |
| Lee Jones | 6 | 0.03% | 1 | 3.33% |
| Tejun Heo | 4 | 0.02% | 1 | 3.33% |
| Paul Gortmaker | 3 | 0.02% | 1 | 3.33% |
| Geliang Tang | 3 | 0.02% | 1 | 3.33% |
| Lucas De Marchi | 3 | 0.02% | 2 | 6.67% |
| Leon Romanovsky | 2 | 0.01% | 1 | 3.33% |
| Julia Lawall | 2 | 0.01% | 1 | 3.33% |
| Gustavo A. R. Silva | 2 | 0.01% | 1 | 3.33% |
| wangjianli | 1 | 0.01% | 1 | 3.33% |
| Qinghua Jin | 1 | 0.01% | 1 | 3.33% |
| Masahiro Yamada | 1 | 0.01% | 1 | 3.33% |
| Total | 18799 | 30 |
/* * Copyright (c) 2011 - 2017 Intel Corporation. All rights reserved. * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation. * All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ /* * This file contains all of the code that is specific to the * QLogic_IB 7220 chip (except that specific to the SerDes) */ #include <linux/interrupt.h> #include <linux/pci.h> #include <linux/delay.h> #include <linux/module.h> #include <linux/io.h> #include <rdma/ib_verbs.h> #include "qib.h" #include "qib_7220.h" static void qib_setup_7220_setextled(struct qib_pportdata *, u32); static void qib_7220_handle_hwerrors(struct qib_devdata *, char *, size_t); static void sendctrl_7220_mod(struct qib_pportdata *ppd, u32 op); static u32 qib_7220_iblink_state(u64); static u8 qib_7220_phys_portstate(u64); static void qib_sdma_update_7220_tail(struct qib_pportdata *, u16); static void qib_set_ib_7220_lstate(struct qib_pportdata *, u16, u16); /* * This file contains almost all the chip-specific register information and * access functions for the QLogic QLogic_IB 7220 PCI-Express chip, with the * exception of SerDes support, which in qib_sd7220.c. */ /* Below uses machine-generated qib_chipnum_regs.h file */ #define KREG_IDX(regname) (QIB_7220_##regname##_OFFS / sizeof(u64)) /* Use defines to tie machine-generated names to lower-case names */ #define kr_control KREG_IDX(Control) #define kr_counterregbase KREG_IDX(CntrRegBase) #define kr_errclear KREG_IDX(ErrClear) #define kr_errmask KREG_IDX(ErrMask) #define kr_errstatus KREG_IDX(ErrStatus) #define kr_extctrl KREG_IDX(EXTCtrl) #define kr_extstatus KREG_IDX(EXTStatus) #define kr_gpio_clear KREG_IDX(GPIOClear) #define kr_gpio_mask KREG_IDX(GPIOMask) #define kr_gpio_out KREG_IDX(GPIOOut) #define kr_gpio_status KREG_IDX(GPIOStatus) #define kr_hrtbt_guid KREG_IDX(HRTBT_GUID) #define kr_hwdiagctrl KREG_IDX(HwDiagCtrl) #define kr_hwerrclear KREG_IDX(HwErrClear) #define kr_hwerrmask KREG_IDX(HwErrMask) #define kr_hwerrstatus KREG_IDX(HwErrStatus) #define kr_ibcctrl KREG_IDX(IBCCtrl) #define kr_ibcddrctrl KREG_IDX(IBCDDRCtrl) #define kr_ibcddrstatus KREG_IDX(IBCDDRStatus) #define kr_ibcstatus KREG_IDX(IBCStatus) #define kr_ibserdesctrl KREG_IDX(IBSerDesCtrl) #define kr_intclear KREG_IDX(IntClear) #define kr_intmask KREG_IDX(IntMask) #define kr_intstatus KREG_IDX(IntStatus) #define kr_ncmodectrl KREG_IDX(IBNCModeCtrl) #define kr_palign KREG_IDX(PageAlign) #define kr_partitionkey KREG_IDX(RcvPartitionKey) #define kr_portcnt KREG_IDX(PortCnt) #define kr_rcvbthqp KREG_IDX(RcvBTHQP) #define kr_rcvctrl KREG_IDX(RcvCtrl) #define kr_rcvegrbase KREG_IDX(RcvEgrBase) #define kr_rcvegrcnt KREG_IDX(RcvEgrCnt) #define kr_rcvhdrcnt KREG_IDX(RcvHdrCnt) #define kr_rcvhdrentsize KREG_IDX(RcvHdrEntSize) #define kr_rcvhdrsize KREG_IDX(RcvHdrSize) #define kr_rcvpktledcnt KREG_IDX(RcvPktLEDCnt) #define kr_rcvtidbase KREG_IDX(RcvTIDBase) #define kr_rcvtidcnt KREG_IDX(RcvTIDCnt) #define kr_revision KREG_IDX(Revision) #define kr_scratch KREG_IDX(Scratch) #define kr_sendbuffererror KREG_IDX(SendBufErr0) #define kr_sendctrl KREG_IDX(SendCtrl) #define kr_senddmabase KREG_IDX(SendDmaBase) #define kr_senddmabufmask0 KREG_IDX(SendDmaBufMask0) #define kr_senddmabufmask1 (KREG_IDX(SendDmaBufMask0) + 1) #define kr_senddmabufmask2 (KREG_IDX(SendDmaBufMask0) + 2) #define kr_senddmahead KREG_IDX(SendDmaHead) #define kr_senddmaheadaddr KREG_IDX(SendDmaHeadAddr) #define kr_senddmalengen KREG_IDX(SendDmaLenGen) #define kr_senddmastatus KREG_IDX(SendDmaStatus) #define kr_senddmatail KREG_IDX(SendDmaTail) #define kr_sendpioavailaddr KREG_IDX(SendBufAvailAddr) #define kr_sendpiobufbase KREG_IDX(SendBufBase) #define kr_sendpiobufcnt KREG_IDX(SendBufCnt) #define kr_sendpiosize KREG_IDX(SendBufSize) #define kr_sendregbase KREG_IDX(SendRegBase) #define kr_userregbase KREG_IDX(UserRegBase) #define kr_xgxs_cfg KREG_IDX(XGXSCfg) /* These must only be written via qib_write_kreg_ctxt() */ #define kr_rcvhdraddr KREG_IDX(RcvHdrAddr0) #define kr_rcvhdrtailaddr KREG_IDX(RcvHdrTailAddr0) #define CREG_IDX(regname) ((QIB_7220_##regname##_OFFS - \ QIB_7220_LBIntCnt_OFFS) / sizeof(u64)) #define cr_badformat CREG_IDX(RxVersionErrCnt) #define cr_erricrc CREG_IDX(RxICRCErrCnt) #define cr_errlink CREG_IDX(RxLinkMalformCnt) #define cr_errlpcrc CREG_IDX(RxLPCRCErrCnt) #define cr_errpkey CREG_IDX(RxPKeyMismatchCnt) #define cr_rcvflowctrl_err CREG_IDX(RxFlowCtrlViolCnt) #define cr_err_rlen CREG_IDX(RxLenErrCnt) #define cr_errslen CREG_IDX(TxLenErrCnt) #define cr_errtidfull CREG_IDX(RxTIDFullErrCnt) #define cr_errtidvalid CREG_IDX(RxTIDValidErrCnt) #define cr_errvcrc CREG_IDX(RxVCRCErrCnt) #define cr_ibstatuschange CREG_IDX(IBStatusChangeCnt) #define cr_lbint CREG_IDX(LBIntCnt) #define cr_invalidrlen CREG_IDX(RxMaxMinLenErrCnt) #define cr_invalidslen CREG_IDX(TxMaxMinLenErrCnt) #define cr_lbflowstall CREG_IDX(LBFlowStallCnt) #define cr_pktrcv CREG_IDX(RxDataPktCnt) #define cr_pktrcvflowctrl CREG_IDX(RxFlowPktCnt) #define cr_pktsend CREG_IDX(TxDataPktCnt) #define cr_pktsendflow CREG_IDX(TxFlowPktCnt) #define cr_portovfl CREG_IDX(RxP0HdrEgrOvflCnt) #define cr_rcvebp CREG_IDX(RxEBPCnt) #define cr_rcvovfl CREG_IDX(RxBufOvflCnt) #define cr_senddropped CREG_IDX(TxDroppedPktCnt) #define cr_sendstall CREG_IDX(TxFlowStallCnt) #define cr_sendunderrun CREG_IDX(TxUnderrunCnt) #define cr_wordrcv CREG_IDX(RxDwordCnt) #define cr_wordsend CREG_IDX(TxDwordCnt) #define cr_txunsupvl CREG_IDX(TxUnsupVLErrCnt) #define cr_rxdroppkt CREG_IDX(RxDroppedPktCnt) #define cr_iblinkerrrecov CREG_IDX(IBLinkErrRecoveryCnt) #define cr_iblinkdown CREG_IDX(IBLinkDownedCnt) #define cr_ibsymbolerr CREG_IDX(IBSymbolErrCnt) #define cr_vl15droppedpkt CREG_IDX(RxVL15DroppedPktCnt) #define cr_rxotherlocalphyerr CREG_IDX(RxOtherLocalPhyErrCnt) #define cr_excessbufferovfl CREG_IDX(ExcessBufferOvflCnt) #define cr_locallinkintegrityerr CREG_IDX(LocalLinkIntegrityErrCnt) #define cr_rxvlerr CREG_IDX(RxVlErrCnt) #define cr_rxdlidfltr CREG_IDX(RxDlidFltrCnt) #define cr_psstat CREG_IDX(PSStat) #define cr_psstart CREG_IDX(PSStart) #define cr_psinterval CREG_IDX(PSInterval) #define cr_psrcvdatacount CREG_IDX(PSRcvDataCount) #define cr_psrcvpktscount CREG_IDX(PSRcvPktsCount) #define cr_psxmitdatacount CREG_IDX(PSXmitDataCount) #define cr_psxmitpktscount CREG_IDX(PSXmitPktsCount) #define cr_psxmitwaitcount CREG_IDX(PSXmitWaitCount) #define cr_txsdmadesc CREG_IDX(TxSDmaDescCnt) #define cr_pcieretrydiag CREG_IDX(PcieRetryBufDiagQwordCnt) #define SYM_RMASK(regname, fldname) ((u64) \ QIB_7220_##regname##_##fldname##_RMASK) #define SYM_MASK(regname, fldname) ((u64) \ QIB_7220_##regname##_##fldname##_RMASK << \ QIB_7220_##regname##_##fldname##_LSB) #define SYM_LSB(regname, fldname) (QIB_7220_##regname##_##fldname##_LSB) #define SYM_FIELD(value, regname, fldname) ((u64) \ (((value) >> SYM_LSB(regname, fldname)) & \ SYM_RMASK(regname, fldname))) #define ERR_MASK(fldname) SYM_MASK(ErrMask, fldname##Mask) #define HWE_MASK(fldname) SYM_MASK(HwErrMask, fldname##Mask) /* ibcctrl bits */ #define QLOGIC_IB_IBCC_LINKINITCMD_DISABLE 1 /* cycle through TS1/TS2 till OK */ #define QLOGIC_IB_IBCC_LINKINITCMD_POLL 2 /* wait for TS1, then go on */ #define QLOGIC_IB_IBCC_LINKINITCMD_SLEEP 3 #define QLOGIC_IB_IBCC_LINKINITCMD_SHIFT 16 #define QLOGIC_IB_IBCC_LINKCMD_DOWN 1 /* move to 0x11 */ #define QLOGIC_IB_IBCC_LINKCMD_ARMED 2 /* move to 0x21 */ #define QLOGIC_IB_IBCC_LINKCMD_ACTIVE 3 /* move to 0x31 */ #define BLOB_7220_IBCHG 0x81 /* * We could have a single register get/put routine, that takes a group type, * but this is somewhat clearer and cleaner. It also gives us some error * checking. 64 bit register reads should always work, but are inefficient * on opteron (the northbridge always generates 2 separate HT 32 bit reads), * so we use kreg32 wherever possible. User register and counter register * reads are always 32 bit reads, so only one form of those routines. */ /** * qib_read_ureg32 - read 32-bit virtualized per-context register * @dd: device * @regno: register number * @ctxt: context number * * Return the contents of a register that is virtualized to be per context. * Returns -1 on errors (not distinguishable from valid contents at * runtime; we may add a separate error variable at some point). */ static inline u32 qib_read_ureg32(const struct qib_devdata *dd, enum qib_ureg regno, int ctxt) { if (!dd->kregbase || !(dd->flags & QIB_PRESENT)) return 0; if (dd->userbase) return readl(regno + (u64 __iomem *) ((char __iomem *)dd->userbase + dd->ureg_align * ctxt)); else return readl(regno + (u64 __iomem *) (dd->uregbase + (char __iomem *)dd->kregbase + dd->ureg_align * ctxt)); } /** * qib_write_ureg - write 32-bit virtualized per-context register * @dd: device * @regno: register number * @value: value * @ctxt: context * * Write the contents of a register that is virtualized to be per context. */ static inline void qib_write_ureg(const struct qib_devdata *dd, enum qib_ureg regno, u64 value, int ctxt) { u64 __iomem *ubase; if (dd->userbase) ubase = (u64 __iomem *) ((char __iomem *) dd->userbase + dd->ureg_align * ctxt); else ubase = (u64 __iomem *) (dd->uregbase + (char __iomem *) dd->kregbase + dd->ureg_align * ctxt); if (dd->kregbase && (dd->flags & QIB_PRESENT)) writeq(value, &ubase[regno]); } /** * qib_write_kreg_ctxt - write a device's per-ctxt 64-bit kernel register * @dd: the qlogic_ib device * @regno: the register number to write * @ctxt: the context containing the register * @value: the value to write */ static inline void qib_write_kreg_ctxt(const struct qib_devdata *dd, const u16 regno, unsigned ctxt, u64 value) { qib_write_kreg(dd, regno + ctxt, value); } static inline void write_7220_creg(const struct qib_devdata *dd, u16 regno, u64 value) { if (dd->cspec->cregbase && (dd->flags & QIB_PRESENT)) writeq(value, &dd->cspec->cregbase[regno]); } static inline u64 read_7220_creg(const struct qib_devdata *dd, u16 regno) { if (!dd->cspec->cregbase || !(dd->flags & QIB_PRESENT)) return 0; return readq(&dd->cspec->cregbase[regno]); } static inline u32 read_7220_creg32(const struct qib_devdata *dd, u16 regno) { if (!dd->cspec->cregbase || !(dd->flags & QIB_PRESENT)) return 0; return readl(&dd->cspec->cregbase[regno]); } /* kr_revision bits */ #define QLOGIC_IB_R_EMULATORREV_MASK ((1ULL << 22) - 1) #define QLOGIC_IB_R_EMULATORREV_SHIFT 40 /* kr_control bits */ #define QLOGIC_IB_C_RESET (1U << 7) /* kr_intstatus, kr_intclear, kr_intmask bits */ #define QLOGIC_IB_I_RCVURG_MASK ((1ULL << 17) - 1) #define QLOGIC_IB_I_RCVURG_SHIFT 32 #define QLOGIC_IB_I_RCVAVAIL_MASK ((1ULL << 17) - 1) #define QLOGIC_IB_I_RCVAVAIL_SHIFT 0 #define QLOGIC_IB_I_SERDESTRIMDONE (1ULL << 27) #define QLOGIC_IB_C_FREEZEMODE 0x00000002 #define QLOGIC_IB_C_LINKENABLE 0x00000004 #define QLOGIC_IB_I_SDMAINT 0x8000000000000000ULL #define QLOGIC_IB_I_SDMADISABLED 0x4000000000000000ULL #define QLOGIC_IB_I_ERROR 0x0000000080000000ULL #define QLOGIC_IB_I_SPIOSENT 0x0000000040000000ULL #define QLOGIC_IB_I_SPIOBUFAVAIL 0x0000000020000000ULL #define QLOGIC_IB_I_GPIO 0x0000000010000000ULL /* variables for sanity checking interrupt and errors */ #define QLOGIC_IB_I_BITSEXTANT \ (QLOGIC_IB_I_SDMAINT | QLOGIC_IB_I_SDMADISABLED | \ (QLOGIC_IB_I_RCVURG_MASK << QLOGIC_IB_I_RCVURG_SHIFT) | \ (QLOGIC_IB_I_RCVAVAIL_MASK << \ QLOGIC_IB_I_RCVAVAIL_SHIFT) | \ QLOGIC_IB_I_ERROR | QLOGIC_IB_I_SPIOSENT | \ QLOGIC_IB_I_SPIOBUFAVAIL | QLOGIC_IB_I_GPIO | \ QLOGIC_IB_I_SERDESTRIMDONE) #define IB_HWE_BITSEXTANT \ (HWE_MASK(RXEMemParityErr) | \ HWE_MASK(TXEMemParityErr) | \ (QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK << \ QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT) | \ QLOGIC_IB_HWE_PCIE1PLLFAILED | \ QLOGIC_IB_HWE_PCIE0PLLFAILED | \ QLOGIC_IB_HWE_PCIEPOISONEDTLP | \ QLOGIC_IB_HWE_PCIECPLTIMEOUT | \ QLOGIC_IB_HWE_PCIEBUSPARITYXTLH | \ QLOGIC_IB_HWE_PCIEBUSPARITYXADM | \ QLOGIC_IB_HWE_PCIEBUSPARITYRADM | \ HWE_MASK(PowerOnBISTFailed) | \ QLOGIC_IB_HWE_COREPLL_FBSLIP | \ QLOGIC_IB_HWE_COREPLL_RFSLIP | \ QLOGIC_IB_HWE_SERDESPLLFAILED | \ HWE_MASK(IBCBusToSPCParityErr) | \ HWE_MASK(IBCBusFromSPCParityErr) | \ QLOGIC_IB_HWE_PCIECPLDATAQUEUEERR | \ QLOGIC_IB_HWE_PCIECPLHDRQUEUEERR | \ QLOGIC_IB_HWE_SDMAMEMREADERR | \ QLOGIC_IB_HWE_CLK_UC_PLLNOTLOCKED | \ QLOGIC_IB_HWE_PCIESERDESQ0PCLKNOTDETECT | \ QLOGIC_IB_HWE_PCIESERDESQ1PCLKNOTDETECT | \ QLOGIC_IB_HWE_PCIESERDESQ2PCLKNOTDETECT | \ QLOGIC_IB_HWE_PCIESERDESQ3PCLKNOTDETECT | \ QLOGIC_IB_HWE_DDSRXEQMEMORYPARITYERR | \ QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR | \ QLOGIC_IB_HWE_PCIE_UC_OCT0MEMORYPARITYERR | \ QLOGIC_IB_HWE_PCIE_UC_OCT1MEMORYPARITYERR) #define IB_E_BITSEXTANT \ (ERR_MASK(RcvFormatErr) | ERR_MASK(RcvVCRCErr) | \ ERR_MASK(RcvICRCErr) | ERR_MASK(RcvMinPktLenErr) | \ ERR_MASK(RcvMaxPktLenErr) | ERR_MASK(RcvLongPktLenErr) | \ ERR_MASK(RcvShortPktLenErr) | ERR_MASK(RcvUnexpectedCharErr) | \ ERR_MASK(RcvUnsupportedVLErr) | ERR_MASK(RcvEBPErr) | \ ERR_MASK(RcvIBFlowErr) | ERR_MASK(RcvBadVersionErr) | \ ERR_MASK(RcvEgrFullErr) | ERR_MASK(RcvHdrFullErr) | \ ERR_MASK(RcvBadTidErr) | ERR_MASK(RcvHdrLenErr) | \ ERR_MASK(RcvHdrErr) | ERR_MASK(RcvIBLostLinkErr) | \ ERR_MASK(SendSpecialTriggerErr) | \ ERR_MASK(SDmaDisabledErr) | ERR_MASK(SendMinPktLenErr) | \ ERR_MASK(SendMaxPktLenErr) | ERR_MASK(SendUnderRunErr) | \ ERR_MASK(SendPktLenErr) | ERR_MASK(SendDroppedSmpPktErr) | \ ERR_MASK(SendDroppedDataPktErr) | \ ERR_MASK(SendPioArmLaunchErr) | \ ERR_MASK(SendUnexpectedPktNumErr) | \ ERR_MASK(SendUnsupportedVLErr) | ERR_MASK(SendBufMisuseErr) | \ ERR_MASK(SDmaGenMismatchErr) | ERR_MASK(SDmaOutOfBoundErr) | \ ERR_MASK(SDmaTailOutOfBoundErr) | ERR_MASK(SDmaBaseErr) | \ ERR_MASK(SDma1stDescErr) | ERR_MASK(SDmaRpyTagErr) | \ ERR_MASK(SDmaDwEnErr) | ERR_MASK(SDmaMissingDwErr) | \ ERR_MASK(SDmaUnexpDataErr) | \ ERR_MASK(IBStatusChanged) | ERR_MASK(InvalidAddrErr) | \ ERR_MASK(ResetNegated) | ERR_MASK(HardwareErr) | \ ERR_MASK(SDmaDescAddrMisalignErr) | \ ERR_MASK(InvalidEEPCmd)) /* kr_hwerrclear, kr_hwerrmask, kr_hwerrstatus, bits */ #define QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK 0x00000000000000ffULL #define QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT 0 #define QLOGIC_IB_HWE_PCIEPOISONEDTLP 0x0000000010000000ULL #define QLOGIC_IB_HWE_PCIECPLTIMEOUT 0x0000000020000000ULL #define QLOGIC_IB_HWE_PCIEBUSPARITYXTLH 0x0000000040000000ULL #define QLOGIC_IB_HWE_PCIEBUSPARITYXADM 0x0000000080000000ULL #define QLOGIC_IB_HWE_PCIEBUSPARITYRADM 0x0000000100000000ULL #define QLOGIC_IB_HWE_COREPLL_FBSLIP 0x0080000000000000ULL #define QLOGIC_IB_HWE_COREPLL_RFSLIP 0x0100000000000000ULL #define QLOGIC_IB_HWE_PCIE1PLLFAILED 0x0400000000000000ULL #define QLOGIC_IB_HWE_PCIE0PLLFAILED 0x0800000000000000ULL #define QLOGIC_IB_HWE_SERDESPLLFAILED 0x1000000000000000ULL /* specific to this chip */ #define QLOGIC_IB_HWE_PCIECPLDATAQUEUEERR 0x0000000000000040ULL #define QLOGIC_IB_HWE_PCIECPLHDRQUEUEERR 0x0000000000000080ULL #define QLOGIC_IB_HWE_SDMAMEMREADERR 0x0000000010000000ULL #define QLOGIC_IB_HWE_CLK_UC_PLLNOTLOCKED 0x2000000000000000ULL #define QLOGIC_IB_HWE_PCIESERDESQ0PCLKNOTDETECT 0x0100000000000000ULL #define QLOGIC_IB_HWE_PCIESERDESQ1PCLKNOTDETECT 0x0200000000000000ULL #define QLOGIC_IB_HWE_PCIESERDESQ2PCLKNOTDETECT 0x0400000000000000ULL #define QLOGIC_IB_HWE_PCIESERDESQ3PCLKNOTDETECT 0x0800000000000000ULL #define QLOGIC_IB_HWE_DDSRXEQMEMORYPARITYERR 0x0000008000000000ULL #define QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR 0x0000004000000000ULL #define QLOGIC_IB_HWE_PCIE_UC_OCT0MEMORYPARITYERR 0x0000001000000000ULL #define QLOGIC_IB_HWE_PCIE_UC_OCT1MEMORYPARITYERR 0x0000002000000000ULL #define IBA7220_IBCC_LINKCMD_SHIFT 19 /* kr_ibcddrctrl bits */ #define IBA7220_IBC_DLIDLMC_MASK 0xFFFFFFFFUL #define IBA7220_IBC_DLIDLMC_SHIFT 32 #define IBA7220_IBC_HRTBT_MASK (SYM_RMASK(IBCDDRCtrl, HRTBT_AUTO) | \ SYM_RMASK(IBCDDRCtrl, HRTBT_ENB)) #define IBA7220_IBC_HRTBT_SHIFT SYM_LSB(IBCDDRCtrl, HRTBT_ENB) #define IBA7220_IBC_LANE_REV_SUPPORTED (1<<8) #define IBA7220_IBC_LREV_MASK 1 #define IBA7220_IBC_LREV_SHIFT 8 #define IBA7220_IBC_RXPOL_MASK 1 #define IBA7220_IBC_RXPOL_SHIFT 7 #define IBA7220_IBC_WIDTH_SHIFT 5 #define IBA7220_IBC_WIDTH_MASK 0x3 #define IBA7220_IBC_WIDTH_1X_ONLY (0 << IBA7220_IBC_WIDTH_SHIFT) #define IBA7220_IBC_WIDTH_4X_ONLY (1 << IBA7220_IBC_WIDTH_SHIFT) #define IBA7220_IBC_WIDTH_AUTONEG (2 << IBA7220_IBC_WIDTH_SHIFT) #define IBA7220_IBC_SPEED_AUTONEG (1 << 1) #define IBA7220_IBC_SPEED_SDR (1 << 2) #define IBA7220_IBC_SPEED_DDR (1 << 3) #define IBA7220_IBC_SPEED_AUTONEG_MASK (0x7 << 1) #define IBA7220_IBC_IBTA_1_2_MASK (1) /* kr_ibcddrstatus */ /* link latency shift is 0, don't bother defining */ #define IBA7220_DDRSTAT_LINKLAT_MASK 0x3ffffff /* kr_extstatus bits */ #define QLOGIC_IB_EXTS_FREQSEL 0x2 #define QLOGIC_IB_EXTS_SERDESSEL 0x4 #define QLOGIC_IB_EXTS_MEMBIST_ENDTEST 0x0000000000004000 #define QLOGIC_IB_EXTS_MEMBIST_DISABLED 0x0000000000008000 /* kr_xgxsconfig bits */ #define QLOGIC_IB_XGXS_RESET 0x5ULL #define QLOGIC_IB_XGXS_FC_SAFE (1ULL << 63) /* kr_rcvpktledcnt */ #define IBA7220_LEDBLINK_ON_SHIFT 32 /* 4ns period on after packet */ #define IBA7220_LEDBLINK_OFF_SHIFT 0 /* 4ns period off before next on */ #define _QIB_GPIO_SDA_NUM 1 #define _QIB_GPIO_SCL_NUM 0 #define QIB_TWSI_EEPROM_DEV 0xA2 /* All Production 7220 cards. */ #define QIB_TWSI_TEMP_DEV 0x98 /* HW counter clock is at 4nsec */ #define QIB_7220_PSXMITWAIT_CHECK_RATE 4000 #define IBA7220_R_INTRAVAIL_SHIFT 17 #define IBA7220_R_PKEY_DIS_SHIFT 34 #define IBA7220_R_TAILUPD_SHIFT 35 #define IBA7220_R_CTXTCFG_SHIFT 36 #define IBA7220_HDRHEAD_PKTINT_SHIFT 32 /* interrupt cnt in upper 32 bits */ /* * the size bits give us 2^N, in KB units. 0 marks as invalid, * and 7 is reserved. We currently use only 2KB and 4KB */ #define IBA7220_TID_SZ_SHIFT 37 /* shift to 3bit size selector */ #define IBA7220_TID_SZ_2K (1UL << IBA7220_TID_SZ_SHIFT) /* 2KB */ #define IBA7220_TID_SZ_4K (2UL << IBA7220_TID_SZ_SHIFT) /* 4KB */ #define IBA7220_TID_PA_SHIFT 11U /* TID addr in chip stored w/o low bits */ #define PBC_7220_VL15_SEND (1ULL << 63) /* pbc; VL15, no credit check */ #define PBC_7220_VL15_SEND_CTRL (1ULL << 31) /* control version of same */ #define AUTONEG_TRIES 5 /* sequential retries to negotiate DDR */ /* packet rate matching delay multiplier */ static u8 rate_to_delay[2][2] = { /* 1x, 4x */ { 8, 2 }, /* SDR */ { 4, 1 } /* DDR */ }; static u8 ib_rate_to_delay[IB_RATE_120_GBPS + 1] = { [IB_RATE_2_5_GBPS] = 8, [IB_RATE_5_GBPS] = 4, [IB_RATE_10_GBPS] = 2, [IB_RATE_20_GBPS] = 1 }; #define IBA7220_LINKSPEED_SHIFT SYM_LSB(IBCStatus, LinkSpeedActive) #define IBA7220_LINKWIDTH_SHIFT SYM_LSB(IBCStatus, LinkWidthActive) /* link training states, from IBC */ #define IB_7220_LT_STATE_DISABLED 0x00 #define IB_7220_LT_STATE_LINKUP 0x01 #define IB_7220_LT_STATE_POLLACTIVE 0x02 #define IB_7220_LT_STATE_POLLQUIET 0x03 #define IB_7220_LT_STATE_SLEEPDELAY 0x04 #define IB_7220_LT_STATE_SLEEPQUIET 0x05 #define IB_7220_LT_STATE_CFGDEBOUNCE 0x08 #define IB_7220_LT_STATE_CFGRCVFCFG 0x09 #define IB_7220_LT_STATE_CFGWAITRMT 0x0a #define IB_7220_LT_STATE_CFGIDLE 0x0b #define IB_7220_LT_STATE_RECOVERRETRAIN 0x0c #define IB_7220_LT_STATE_RECOVERWAITRMT 0x0e #define IB_7220_LT_STATE_RECOVERIDLE 0x0f /* link state machine states from IBC */ #define IB_7220_L_STATE_DOWN 0x0 #define IB_7220_L_STATE_INIT 0x1 #define IB_7220_L_STATE_ARM 0x2 #define IB_7220_L_STATE_ACTIVE 0x3 #define IB_7220_L_STATE_ACT_DEFER 0x4 static const u8 qib_7220_physportstate[0x20] = { [IB_7220_LT_STATE_DISABLED] = IB_PHYSPORTSTATE_DISABLED, [IB_7220_LT_STATE_LINKUP] = IB_PHYSPORTSTATE_LINKUP, [IB_7220_LT_STATE_POLLACTIVE] = IB_PHYSPORTSTATE_POLL, [IB_7220_LT_STATE_POLLQUIET] = IB_PHYSPORTSTATE_POLL, [IB_7220_LT_STATE_SLEEPDELAY] = IB_PHYSPORTSTATE_SLEEP, [IB_7220_LT_STATE_SLEEPQUIET] = IB_PHYSPORTSTATE_SLEEP, [IB_7220_LT_STATE_CFGDEBOUNCE] = IB_PHYSPORTSTATE_CFG_TRAIN, [IB_7220_LT_STATE_CFGRCVFCFG] = IB_PHYSPORTSTATE_CFG_TRAIN, [IB_7220_LT_STATE_CFGWAITRMT] = IB_PHYSPORTSTATE_CFG_TRAIN, [IB_7220_LT_STATE_CFGIDLE] = IB_PHYSPORTSTATE_CFG_TRAIN, [IB_7220_LT_STATE_RECOVERRETRAIN] = IB_PHYSPORTSTATE_LINK_ERR_RECOVER, [IB_7220_LT_STATE_RECOVERWAITRMT] = IB_PHYSPORTSTATE_LINK_ERR_RECOVER, [IB_7220_LT_STATE_RECOVERIDLE] = IB_PHYSPORTSTATE_LINK_ERR_RECOVER, [0x10] = IB_PHYSPORTSTATE_CFG_TRAIN, [0x11] = IB_PHYSPORTSTATE_CFG_TRAIN, [0x12] = IB_PHYSPORTSTATE_CFG_TRAIN, [0x13] = IB_PHYSPORTSTATE_CFG_TRAIN, [0x14] = IB_PHYSPORTSTATE_CFG_TRAIN, [0x15] = IB_PHYSPORTSTATE_CFG_TRAIN, [0x16] = IB_PHYSPORTSTATE_CFG_TRAIN, [0x17] = IB_PHYSPORTSTATE_CFG_TRAIN }; int qib_special_trigger; module_param_named(special_trigger, qib_special_trigger, int, S_IRUGO); MODULE_PARM_DESC(special_trigger, "Enable SpecialTrigger arm/launch"); #define IBCBUSFRSPCPARITYERR HWE_MASK(IBCBusFromSPCParityErr) #define IBCBUSTOSPCPARITYERR HWE_MASK(IBCBusToSPCParityErr) #define SYM_MASK_BIT(regname, fldname, bit) ((u64) \ (1ULL << (SYM_LSB(regname, fldname) + (bit)))) #define TXEMEMPARITYERR_PIOBUF \ SYM_MASK_BIT(HwErrMask, TXEMemParityErrMask, 0) #define TXEMEMPARITYERR_PIOPBC \ SYM_MASK_BIT(HwErrMask, TXEMemParityErrMask, 1) #define TXEMEMPARITYERR_PIOLAUNCHFIFO \ SYM_MASK_BIT(HwErrMask, TXEMemParityErrMask, 2) #define RXEMEMPARITYERR_RCVBUF \ SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 0) #define RXEMEMPARITYERR_LOOKUPQ \ SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 1) #define RXEMEMPARITYERR_EXPTID \ SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 2) #define RXEMEMPARITYERR_EAGERTID \ SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 3) #define RXEMEMPARITYERR_FLAGBUF \ SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 4) #define RXEMEMPARITYERR_DATAINFO \ SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 5) #define RXEMEMPARITYERR_HDRINFO \ SYM_MASK_BIT(HwErrMask, RXEMemParityErrMask, 6) /* 7220 specific hardware errors... */ static const struct qib_hwerror_msgs qib_7220_hwerror_msgs[] = { /* generic hardware errors */ QLOGIC_IB_HWE_MSG(IBCBUSFRSPCPARITYERR, "QIB2IB Parity"), QLOGIC_IB_HWE_MSG(IBCBUSTOSPCPARITYERR, "IB2QIB Parity"), QLOGIC_IB_HWE_MSG(TXEMEMPARITYERR_PIOBUF, "TXE PIOBUF Memory Parity"), QLOGIC_IB_HWE_MSG(TXEMEMPARITYERR_PIOPBC, "TXE PIOPBC Memory Parity"), QLOGIC_IB_HWE_MSG(TXEMEMPARITYERR_PIOLAUNCHFIFO, "TXE PIOLAUNCHFIFO Memory Parity"), QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_RCVBUF, "RXE RCVBUF Memory Parity"), QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_LOOKUPQ, "RXE LOOKUPQ Memory Parity"), QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_EAGERTID, "RXE EAGERTID Memory Parity"), QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_EXPTID, "RXE EXPTID Memory Parity"), QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_FLAGBUF, "RXE FLAGBUF Memory Parity"), QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_DATAINFO, "RXE DATAINFO Memory Parity"), QLOGIC_IB_HWE_MSG(RXEMEMPARITYERR_HDRINFO, "RXE HDRINFO Memory Parity"), /* chip-specific hardware errors */ QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEPOISONEDTLP, "PCIe Poisoned TLP"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIECPLTIMEOUT, "PCIe completion timeout"), /* * In practice, it's unlikely that we'll see PCIe PLL, or bus * parity or memory parity error failures, because most likely we * won't be able to talk to the core of the chip. Nonetheless, we * might see them, if they are in parts of the PCIe core that aren't * essential. */ QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIE1PLLFAILED, "PCIePLL1"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIE0PLLFAILED, "PCIePLL0"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEBUSPARITYXTLH, "PCIe XTLH core parity"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEBUSPARITYXADM, "PCIe ADM TX core parity"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIEBUSPARITYRADM, "PCIe ADM RX core parity"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_SERDESPLLFAILED, "SerDes PLL"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIECPLDATAQUEUEERR, "PCIe cpl header queue"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIECPLHDRQUEUEERR, "PCIe cpl data queue"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_SDMAMEMREADERR, "Send DMA memory read"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_CLK_UC_PLLNOTLOCKED, "uC PLL clock not locked"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIESERDESQ0PCLKNOTDETECT, "PCIe serdes Q0 no clock"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIESERDESQ1PCLKNOTDETECT, "PCIe serdes Q1 no clock"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIESERDESQ2PCLKNOTDETECT, "PCIe serdes Q2 no clock"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIESERDESQ3PCLKNOTDETECT, "PCIe serdes Q3 no clock"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_DDSRXEQMEMORYPARITYERR, "DDS RXEQ memory parity"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR, "IB uC memory parity"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIE_UC_OCT0MEMORYPARITYERR, "PCIe uC oct0 memory parity"), QLOGIC_IB_HWE_MSG(QLOGIC_IB_HWE_PCIE_UC_OCT1MEMORYPARITYERR, "PCIe uC oct1 memory parity"), }; #define RXE_PARITY (RXEMEMPARITYERR_EAGERTID|RXEMEMPARITYERR_EXPTID) #define QLOGIC_IB_E_PKTERRS (\ ERR_MASK(SendPktLenErr) | \ ERR_MASK(SendDroppedDataPktErr) | \ ERR_MASK(RcvVCRCErr) | \ ERR_MASK(RcvICRCErr) | \ ERR_MASK(RcvShortPktLenErr) | \ ERR_MASK(RcvEBPErr)) /* Convenience for decoding Send DMA errors */ #define QLOGIC_IB_E_SDMAERRS ( \ ERR_MASK(SDmaGenMismatchErr) | \ ERR_MASK(SDmaOutOfBoundErr) | \ ERR_MASK(SDmaTailOutOfBoundErr) | ERR_MASK(SDmaBaseErr) | \ ERR_MASK(SDma1stDescErr) | ERR_MASK(SDmaRpyTagErr) | \ ERR_MASK(SDmaDwEnErr) | ERR_MASK(SDmaMissingDwErr) | \ ERR_MASK(SDmaUnexpDataErr) | \ ERR_MASK(SDmaDescAddrMisalignErr) | \ ERR_MASK(SDmaDisabledErr) | \ ERR_MASK(SendBufMisuseErr)) /* These are all rcv-related errors which we want to count for stats */ #define E_SUM_PKTERRS \ (ERR_MASK(RcvHdrLenErr) | ERR_MASK(RcvBadTidErr) | \ ERR_MASK(RcvBadVersionErr) | ERR_MASK(RcvHdrErr) | \ ERR_MASK(RcvLongPktLenErr) | ERR_MASK(RcvShortPktLenErr) | \ ERR_MASK(RcvMaxPktLenErr) | ERR_MASK(RcvMinPktLenErr) | \ ERR_MASK(RcvFormatErr) | ERR_MASK(RcvUnsupportedVLErr) | \ ERR_MASK(RcvUnexpectedCharErr) | ERR_MASK(RcvEBPErr)) /* These are all send-related errors which we want to count for stats */ #define E_SUM_ERRS \ (ERR_MASK(SendPioArmLaunchErr) | ERR_MASK(SendUnexpectedPktNumErr) | \ ERR_MASK(SendDroppedDataPktErr) | ERR_MASK(SendDroppedSmpPktErr) | \ ERR_MASK(SendMaxPktLenErr) | ERR_MASK(SendUnsupportedVLErr) | \ ERR_MASK(SendMinPktLenErr) | ERR_MASK(SendPktLenErr) | \ ERR_MASK(InvalidAddrErr)) /* * this is similar to E_SUM_ERRS, but can't ignore armlaunch, don't ignore * errors not related to freeze and cancelling buffers. Can't ignore * armlaunch because could get more while still cleaning up, and need * to cancel those as they happen. */ #define E_SPKT_ERRS_IGNORE \ (ERR_MASK(SendDroppedDataPktErr) | ERR_MASK(SendDroppedSmpPktErr) | \ ERR_MASK(SendMaxPktLenErr) | ERR_MASK(SendMinPktLenErr) | \ ERR_MASK(SendPktLenErr)) /* * these are errors that can occur when the link changes state while * a packet is being sent or received. This doesn't cover things * like EBP or VCRC that can be the result of a sending having the * link change state, so we receive a "known bad" packet. */ #define E_SUM_LINK_PKTERRS \ (ERR_MASK(SendDroppedDataPktErr) | ERR_MASK(SendDroppedSmpPktErr) | \ ERR_MASK(SendMinPktLenErr) | ERR_MASK(SendPktLenErr) | \ ERR_MASK(RcvShortPktLenErr) | ERR_MASK(RcvMinPktLenErr) | \ ERR_MASK(RcvUnexpectedCharErr)) static void autoneg_7220_work(struct work_struct *); static u32 __iomem *qib_7220_getsendbuf(struct qib_pportdata *, u64, u32 *); /* * Called when we might have an error that is specific to a particular * PIO buffer, and may need to cancel that buffer, so it can be re-used. * because we don't need to force the update of pioavail. */ static void qib_disarm_7220_senderrbufs(struct qib_pportdata *ppd) { unsigned long sbuf[3]; struct qib_devdata *dd = ppd->dd; /* * It's possible that sendbuffererror could have bits set; might * have already done this as a result of hardware error handling. */ /* read these before writing errorclear */ sbuf[0] = qib_read_kreg64(dd, kr_sendbuffererror); sbuf[1] = qib_read_kreg64(dd, kr_sendbuffererror + 1); sbuf[2] = qib_read_kreg64(dd, kr_sendbuffererror + 2); if (sbuf[0] || sbuf[1] || sbuf[2]) qib_disarm_piobufs_set(dd, sbuf, dd->piobcnt2k + dd->piobcnt4k); } static void qib_7220_txe_recover(struct qib_devdata *dd) { qib_devinfo(dd->pcidev, "Recovering from TXE PIO parity error\n"); qib_disarm_7220_senderrbufs(dd->pport); } /* * This is called with interrupts disabled and sdma_lock held. */ static void qib_7220_sdma_sendctrl(struct qib_pportdata *ppd, unsigned op) { struct qib_devdata *dd = ppd->dd; u64 set_sendctrl = 0; u64 clr_sendctrl = 0; if (op & QIB_SDMA_SENDCTRL_OP_ENABLE) set_sendctrl |= SYM_MASK(SendCtrl, SDmaEnable); else clr_sendctrl |= SYM_MASK(SendCtrl, SDmaEnable); if (op & QIB_SDMA_SENDCTRL_OP_INTENABLE) set_sendctrl |= SYM_MASK(SendCtrl, SDmaIntEnable); else clr_sendctrl |= SYM_MASK(SendCtrl, SDmaIntEnable); if (op & QIB_SDMA_SENDCTRL_OP_HALT) set_sendctrl |= SYM_MASK(SendCtrl, SDmaHalt); else clr_sendctrl |= SYM_MASK(SendCtrl, SDmaHalt); spin_lock(&dd->sendctrl_lock); dd->sendctrl |= set_sendctrl; dd->sendctrl &= ~clr_sendctrl; qib_write_kreg(dd, kr_sendctrl, dd->sendctrl); qib_write_kreg(dd, kr_scratch, 0); spin_unlock(&dd->sendctrl_lock); } static void qib_decode_7220_sdma_errs(struct qib_pportdata *ppd, u64 err, char *buf, size_t blen) { static const struct { u64 err; const char *msg; } errs[] = { { ERR_MASK(SDmaGenMismatchErr), "SDmaGenMismatch" }, { ERR_MASK(SDmaOutOfBoundErr), "SDmaOutOfBound" }, { ERR_MASK(SDmaTailOutOfBoundErr), "SDmaTailOutOfBound" }, { ERR_MASK(SDmaBaseErr), "SDmaBase" }, { ERR_MASK(SDma1stDescErr), "SDma1stDesc" }, { ERR_MASK(SDmaRpyTagErr), "SDmaRpyTag" }, { ERR_MASK(SDmaDwEnErr), "SDmaDwEn" }, { ERR_MASK(SDmaMissingDwErr), "SDmaMissingDw" }, { ERR_MASK(SDmaUnexpDataErr), "SDmaUnexpData" }, { ERR_MASK(SDmaDescAddrMisalignErr), "SDmaDescAddrMisalign" }, { ERR_MASK(SendBufMisuseErr), "SendBufMisuse" }, { ERR_MASK(SDmaDisabledErr), "SDmaDisabled" }, }; int i; size_t bidx = 0; for (i = 0; i < ARRAY_SIZE(errs); i++) { if (err & errs[i].err) bidx += scnprintf(buf + bidx, blen - bidx, "%s ", errs[i].msg); } } /* * This is called as part of link down clean up so disarm and flush * all send buffers so that SMP packets can be sent. */ static void qib_7220_sdma_hw_clean_up(struct qib_pportdata *ppd) { /* This will trigger the Abort interrupt */ sendctrl_7220_mod(ppd, QIB_SENDCTRL_DISARM_ALL | QIB_SENDCTRL_FLUSH | QIB_SENDCTRL_AVAIL_BLIP); ppd->dd->upd_pio_shadow = 1; /* update our idea of what's busy */ } static void qib_sdma_7220_setlengen(struct qib_pportdata *ppd) { /* * Set SendDmaLenGen and clear and set * the MSB of the generation count to enable generation checking * and load the internal generation counter. */ qib_write_kreg(ppd->dd, kr_senddmalengen, ppd->sdma_descq_cnt); qib_write_kreg(ppd->dd, kr_senddmalengen, ppd->sdma_descq_cnt | (1ULL << QIB_7220_SendDmaLenGen_Generation_MSB)); } static void qib_7220_sdma_hw_start_up(struct qib_pportdata *ppd) { qib_sdma_7220_setlengen(ppd); qib_sdma_update_7220_tail(ppd, 0); /* Set SendDmaTail */ ppd->sdma_head_dma[0] = 0; } #define DISABLES_SDMA ( \ ERR_MASK(SDmaDisabledErr) | \ ERR_MASK(SDmaBaseErr) | \ ERR_MASK(SDmaTailOutOfBoundErr) | \ ERR_MASK(SDmaOutOfBoundErr) | \ ERR_MASK(SDma1stDescErr) | \ ERR_MASK(SDmaRpyTagErr) | \ ERR_MASK(SDmaGenMismatchErr) | \ ERR_MASK(SDmaDescAddrMisalignErr) | \ ERR_MASK(SDmaMissingDwErr) | \ ERR_MASK(SDmaDwEnErr)) static void sdma_7220_errors(struct qib_pportdata *ppd, u64 errs) { unsigned long flags; struct qib_devdata *dd = ppd->dd; char *msg; errs &= QLOGIC_IB_E_SDMAERRS; msg = dd->cspec->sdmamsgbuf; qib_decode_7220_sdma_errs(ppd, errs, msg, sizeof(dd->cspec->sdmamsgbuf)); spin_lock_irqsave(&ppd->sdma_lock, flags); if (errs & ERR_MASK(SendBufMisuseErr)) { unsigned long sbuf[3]; sbuf[0] = qib_read_kreg64(dd, kr_sendbuffererror); sbuf[1] = qib_read_kreg64(dd, kr_sendbuffererror + 1); sbuf[2] = qib_read_kreg64(dd, kr_sendbuffererror + 2); qib_dev_err(ppd->dd, "IB%u:%u SendBufMisuse: %04lx %016lx %016lx\n", ppd->dd->unit, ppd->port, sbuf[2], sbuf[1], sbuf[0]); } if (errs & ERR_MASK(SDmaUnexpDataErr)) qib_dev_err(dd, "IB%u:%u SDmaUnexpData\n", ppd->dd->unit, ppd->port); switch (ppd->sdma_state.current_state) { case qib_sdma_state_s00_hw_down: /* not expecting any interrupts */ break; case qib_sdma_state_s10_hw_start_up_wait: /* handled in intr path */ break; case qib_sdma_state_s20_idle: /* not expecting any interrupts */ break; case qib_sdma_state_s30_sw_clean_up_wait: /* not expecting any interrupts */ break; case qib_sdma_state_s40_hw_clean_up_wait: if (errs & ERR_MASK(SDmaDisabledErr)) __qib_sdma_process_event(ppd, qib_sdma_event_e50_hw_cleaned); break; case qib_sdma_state_s50_hw_halt_wait: /* handled in intr path */ break; case qib_sdma_state_s99_running: if (errs & DISABLES_SDMA) __qib_sdma_process_event(ppd, qib_sdma_event_e7220_err_halted); break; } spin_unlock_irqrestore(&ppd->sdma_lock, flags); } /* * Decode the error status into strings, deciding whether to always * print * it or not depending on "normal packet errors" vs everything * else. Return 1 if "real" errors, otherwise 0 if only packet * errors, so caller can decide what to print with the string. */ static int qib_decode_7220_err(struct qib_devdata *dd, char *buf, size_t blen, u64 err) { int iserr = 1; *buf = '\0'; if (err & QLOGIC_IB_E_PKTERRS) { if (!(err & ~QLOGIC_IB_E_PKTERRS)) iserr = 0; if ((err & ERR_MASK(RcvICRCErr)) && !(err & (ERR_MASK(RcvVCRCErr) | ERR_MASK(RcvEBPErr)))) strlcat(buf, "CRC ", blen); if (!iserr) goto done; } if (err & ERR_MASK(RcvHdrLenErr)) strlcat(buf, "rhdrlen ", blen); if (err & ERR_MASK(RcvBadTidErr)) strlcat(buf, "rbadtid ", blen); if (err & ERR_MASK(RcvBadVersionErr)) strlcat(buf, "rbadversion ", blen); if (err & ERR_MASK(RcvHdrErr)) strlcat(buf, "rhdr ", blen); if (err & ERR_MASK(SendSpecialTriggerErr)) strlcat(buf, "sendspecialtrigger ", blen); if (err & ERR_MASK(RcvLongPktLenErr)) strlcat(buf, "rlongpktlen ", blen); if (err & ERR_MASK(RcvMaxPktLenErr)) strlcat(buf, "rmaxpktlen ", blen); if (err & ERR_MASK(RcvMinPktLenErr)) strlcat(buf, "rminpktlen ", blen); if (err & ERR_MASK(SendMinPktLenErr)) strlcat(buf, "sminpktlen ", blen); if (err & ERR_MASK(RcvFormatErr)) strlcat(buf, "rformaterr ", blen); if (err & ERR_MASK(RcvUnsupportedVLErr)) strlcat(buf, "runsupvl ", blen); if (err & ERR_MASK(RcvUnexpectedCharErr)) strlcat(buf, "runexpchar ", blen); if (err & ERR_MASK(RcvIBFlowErr)) strlcat(buf, "ribflow ", blen); if (err & ERR_MASK(SendUnderRunErr)) strlcat(buf, "sunderrun ", blen); if (err & ERR_MASK(SendPioArmLaunchErr)) strlcat(buf, "spioarmlaunch ", blen); if (err & ERR_MASK(SendUnexpectedPktNumErr)) strlcat(buf, "sunexperrpktnum ", blen); if (err & ERR_MASK(SendDroppedSmpPktErr)) strlcat(buf, "sdroppedsmppkt ", blen); if (err & ERR_MASK(SendMaxPktLenErr)) strlcat(buf, "smaxpktlen ", blen); if (err & ERR_MASK(SendUnsupportedVLErr)) strlcat(buf, "sunsupVL ", blen); if (err & ERR_MASK(InvalidAddrErr)) strlcat(buf, "invalidaddr ", blen); if (err & ERR_MASK(RcvEgrFullErr)) strlcat(buf, "rcvegrfull ", blen); if (err & ERR_MASK(RcvHdrFullErr)) strlcat(buf, "rcvhdrfull ", blen); if (err & ERR_MASK(IBStatusChanged)) strlcat(buf, "ibcstatuschg ", blen); if (err & ERR_MASK(RcvIBLostLinkErr)) strlcat(buf, "riblostlink ", blen); if (err & ERR_MASK(HardwareErr)) strlcat(buf, "hardware ", blen); if (err & ERR_MASK(ResetNegated)) strlcat(buf, "reset ", blen); if (err & QLOGIC_IB_E_SDMAERRS) qib_decode_7220_sdma_errs(dd->pport, err, buf, blen); if (err & ERR_MASK(InvalidEEPCmd)) strlcat(buf, "invalideepromcmd ", blen); done: return iserr; } static void reenable_7220_chase(struct timer_list *t) { struct qib_chippport_specific *cpspec = from_timer(cpspec, t, chase_timer); struct qib_pportdata *ppd = &cpspec->pportdata; ppd->cpspec->chase_timer.expires = 0; qib_set_ib_7220_lstate(ppd, QLOGIC_IB_IBCC_LINKCMD_DOWN, QLOGIC_IB_IBCC_LINKINITCMD_POLL); } static void handle_7220_chase(struct qib_pportdata *ppd, u64 ibcst) { u8 ibclt; unsigned long tnow; ibclt = (u8)SYM_FIELD(ibcst, IBCStatus, LinkTrainingState); /* * Detect and handle the state chase issue, where we can * get stuck if we are unlucky on timing on both sides of * the link. If we are, we disable, set a timer, and * then re-enable. */ switch (ibclt) { case IB_7220_LT_STATE_CFGRCVFCFG: case IB_7220_LT_STATE_CFGWAITRMT: case IB_7220_LT_STATE_TXREVLANES: case IB_7220_LT_STATE_CFGENH: tnow = jiffies; if (ppd->cpspec->chase_end && time_after(tnow, ppd->cpspec->chase_end)) { ppd->cpspec->chase_end = 0; qib_set_ib_7220_lstate(ppd, QLOGIC_IB_IBCC_LINKCMD_DOWN, QLOGIC_IB_IBCC_LINKINITCMD_DISABLE); ppd->cpspec->chase_timer.expires = jiffies + QIB_CHASE_DIS_TIME; add_timer(&ppd->cpspec->chase_timer); } else if (!ppd->cpspec->chase_end) ppd->cpspec->chase_end = tnow + QIB_CHASE_TIME; break; default: ppd->cpspec->chase_end = 0; break; } } static void handle_7220_errors(struct qib_devdata *dd, u64 errs) { char *msg; u64 ignore_this_time = 0; u64 iserr = 0; struct qib_pportdata *ppd = dd->pport; u64 mask; /* don't report errors that are masked */ errs &= dd->cspec->errormask; msg = dd->cspec->emsgbuf; /* do these first, they are most important */ if (errs & ERR_MASK(HardwareErr)) qib_7220_handle_hwerrors(dd, msg, sizeof(dd->cspec->emsgbuf)); if (errs & QLOGIC_IB_E_SDMAERRS) sdma_7220_errors(ppd, errs); if (errs & ~IB_E_BITSEXTANT) qib_dev_err(dd, "error interrupt with unknown errors %llx set\n", (unsigned long long) (errs & ~IB_E_BITSEXTANT)); if (errs & E_SUM_ERRS) { qib_disarm_7220_senderrbufs(ppd); if ((errs & E_SUM_LINK_PKTERRS) && !(ppd->lflags & QIBL_LINKACTIVE)) { /* * This can happen when trying to bring the link * up, but the IB link changes state at the "wrong" * time. The IB logic then complains that the packet * isn't valid. We don't want to confuse people, so * we just don't print them, except at debug */ ignore_this_time = errs & E_SUM_LINK_PKTERRS; } } else if ((errs & E_SUM_LINK_PKTERRS) && !(ppd->lflags & QIBL_LINKACTIVE)) { /* * This can happen when SMA is trying to bring the link * up, but the IB link changes state at the "wrong" time. * The IB logic then complains that the packet isn't * valid. We don't want to confuse people, so we just * don't print them, except at debug */ ignore_this_time = errs & E_SUM_LINK_PKTERRS; } qib_write_kreg(dd, kr_errclear, errs); errs &= ~ignore_this_time; if (!errs) goto done; /* * The ones we mask off are handled specially below * or above. Also mask SDMADISABLED by default as it * is too chatty. */ mask = ERR_MASK(IBStatusChanged) | ERR_MASK(RcvEgrFullErr) | ERR_MASK(RcvHdrFullErr) | ERR_MASK(HardwareErr) | ERR_MASK(SDmaDisabledErr); qib_decode_7220_err(dd, msg, sizeof(dd->cspec->emsgbuf), errs & ~mask); if (errs & E_SUM_PKTERRS) qib_stats.sps_rcverrs++; if (errs & E_SUM_ERRS) qib_stats.sps_txerrs++; iserr = errs & ~(E_SUM_PKTERRS | QLOGIC_IB_E_PKTERRS | ERR_MASK(SDmaDisabledErr)); if (errs & ERR_MASK(IBStatusChanged)) { u64 ibcs; ibcs = qib_read_kreg64(dd, kr_ibcstatus); if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) handle_7220_chase(ppd, ibcs); /* Update our picture of width and speed from chip */ ppd->link_width_active = ((ibcs >> IBA7220_LINKWIDTH_SHIFT) & 1) ? IB_WIDTH_4X : IB_WIDTH_1X; ppd->link_speed_active = ((ibcs >> IBA7220_LINKSPEED_SHIFT) & 1) ? QIB_IB_DDR : QIB_IB_SDR; /* * Since going into a recovery state causes the link state * to go down and since recovery is transitory, it is better * if we "miss" ever seeing the link training state go into * recovery (i.e., ignore this transition for link state * special handling purposes) without updating lastibcstat. */ if (qib_7220_phys_portstate(ibcs) != IB_PHYSPORTSTATE_LINK_ERR_RECOVER) qib_handle_e_ibstatuschanged(ppd, ibcs); } if (errs & ERR_MASK(ResetNegated)) { qib_dev_err(dd, "Got reset, requires re-init (unload and reload driver)\n"); dd->flags &= ~QIB_INITTED; /* needs re-init */ /* mark as having had error */ *dd->devstatusp |= QIB_STATUS_HWERROR; *dd->pport->statusp &= ~QIB_STATUS_IB_CONF; } if (*msg && iserr) qib_dev_porterr(dd, ppd->port, "%s error\n", msg); if (ppd->state_wanted & ppd->lflags) wake_up_interruptible(&ppd->state_wait); /* * If there were hdrq or egrfull errors, wake up any processes * waiting in poll. We used to try to check which contexts had * the overflow, but given the cost of that and the chip reads * to support it, it's better to just wake everybody up if we * get an overflow; waiters can poll again if it's not them. */ if (errs & (ERR_MASK(RcvEgrFullErr) | ERR_MASK(RcvHdrFullErr))) { qib_handle_urcv(dd, ~0U); if (errs & ERR_MASK(RcvEgrFullErr)) qib_stats.sps_buffull++; else qib_stats.sps_hdrfull++; } done: return; } /* enable/disable chip from delivering interrupts */ static void qib_7220_set_intr_state(struct qib_devdata *dd, u32 enable) { if (enable) { if (dd->flags & QIB_BADINTR) return; qib_write_kreg(dd, kr_intmask, ~0ULL); /* force re-interrupt of any pending interrupts. */ qib_write_kreg(dd, kr_intclear, 0ULL); } else qib_write_kreg(dd, kr_intmask, 0ULL); } /* * Try to cleanup as much as possible for anything that might have gone * wrong while in freeze mode, such as pio buffers being written by user * processes (causing armlaunch), send errors due to going into freeze mode, * etc., and try to avoid causing extra interrupts while doing so. * Forcibly update the in-memory pioavail register copies after cleanup * because the chip won't do it while in freeze mode (the register values * themselves are kept correct). * Make sure that we don't lose any important interrupts by using the chip * feature that says that writing 0 to a bit in *clear that is set in * *status will cause an interrupt to be generated again (if allowed by * the *mask value). * This is in chip-specific code because of all of the register accesses, * even though the details are similar on most chips. */ static void qib_7220_clear_freeze(struct qib_devdata *dd) { /* disable error interrupts, to avoid confusion */ qib_write_kreg(dd, kr_errmask, 0ULL); /* also disable interrupts; errormask is sometimes overwritten */ qib_7220_set_intr_state(dd, 0); qib_cancel_sends(dd->pport); /* clear the freeze, and be sure chip saw it */ qib_write_kreg(dd, kr_control, dd->control); qib_read_kreg32(dd, kr_scratch); /* force in-memory update now we are out of freeze */ qib_force_pio_avail_update(dd); /* * force new interrupt if any hwerr, error or interrupt bits are * still set, and clear "safe" send packet errors related to freeze * and cancelling sends. Re-enable error interrupts before possible * force of re-interrupt on pending interrupts. */ qib_write_kreg(dd, kr_hwerrclear, 0ULL); qib_write_kreg(dd, kr_errclear, E_SPKT_ERRS_IGNORE); qib_write_kreg(dd, kr_errmask, dd->cspec->errormask); qib_7220_set_intr_state(dd, 1); } /** * qib_7220_handle_hwerrors - display hardware errors. * @dd: the qlogic_ib device * @msg: the output buffer * @msgl: the size of the output buffer * * Use same msg buffer as regular errors to avoid excessive stack * use. Most hardware errors are catastrophic, but for right now, * we'll print them and continue. We reuse the same message buffer as * handle_7220_errors() to avoid excessive stack usage. */ static void qib_7220_handle_hwerrors(struct qib_devdata *dd, char *msg, size_t msgl) { u64 hwerrs; u32 bits, ctrl; int isfatal = 0; char *bitsmsg; hwerrs = qib_read_kreg64(dd, kr_hwerrstatus); if (!hwerrs) goto bail; if (hwerrs == ~0ULL) { qib_dev_err(dd, "Read of hardware error status failed (all bits set); ignoring\n"); goto bail; } qib_stats.sps_hwerrs++; /* * Always clear the error status register, except MEMBISTFAIL, * regardless of whether we continue or stop using the chip. * We want that set so we know it failed, even across driver reload. * We'll still ignore it in the hwerrmask. We do this partly for * diagnostics, but also for support. */ qib_write_kreg(dd, kr_hwerrclear, hwerrs & ~HWE_MASK(PowerOnBISTFailed)); hwerrs &= dd->cspec->hwerrmask; if (hwerrs & ~(TXEMEMPARITYERR_PIOBUF | TXEMEMPARITYERR_PIOPBC | RXE_PARITY)) qib_devinfo(dd->pcidev, "Hardware error: hwerr=0x%llx (cleared)\n", (unsigned long long) hwerrs); if (hwerrs & ~IB_HWE_BITSEXTANT) qib_dev_err(dd, "hwerror interrupt with unknown errors %llx set\n", (unsigned long long) (hwerrs & ~IB_HWE_BITSEXTANT)); if (hwerrs & QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR) qib_sd7220_clr_ibpar(dd); ctrl = qib_read_kreg32(dd, kr_control); if ((ctrl & QLOGIC_IB_C_FREEZEMODE) && !dd->diag_client) { /* * Parity errors in send memory are recoverable by h/w * just do housekeeping, exit freeze mode and continue. */ if (hwerrs & (TXEMEMPARITYERR_PIOBUF | TXEMEMPARITYERR_PIOPBC)) { qib_7220_txe_recover(dd); hwerrs &= ~(TXEMEMPARITYERR_PIOBUF | TXEMEMPARITYERR_PIOPBC); } if (hwerrs) isfatal = 1; else qib_7220_clear_freeze(dd); } *msg = '\0'; if (hwerrs & HWE_MASK(PowerOnBISTFailed)) { isfatal = 1; strlcat(msg, "[Memory BIST test failed, InfiniPath hardware unusable]", msgl); /* ignore from now on, so disable until driver reloaded */ dd->cspec->hwerrmask &= ~HWE_MASK(PowerOnBISTFailed); qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask); } qib_format_hwerrors(hwerrs, qib_7220_hwerror_msgs, ARRAY_SIZE(qib_7220_hwerror_msgs), msg, msgl); bitsmsg = dd->cspec->bitsmsgbuf; if (hwerrs & (QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK << QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT)) { bits = (u32) ((hwerrs >> QLOGIC_IB_HWE_PCIEMEMPARITYERR_SHIFT) & QLOGIC_IB_HWE_PCIEMEMPARITYERR_MASK); snprintf(bitsmsg, sizeof(dd->cspec->bitsmsgbuf), "[PCIe Mem Parity Errs %x] ", bits); strlcat(msg, bitsmsg, msgl); } #define _QIB_PLL_FAIL (QLOGIC_IB_HWE_COREPLL_FBSLIP | \ QLOGIC_IB_HWE_COREPLL_RFSLIP) if (hwerrs & _QIB_PLL_FAIL) { isfatal = 1; snprintf(bitsmsg, sizeof(dd->cspec->bitsmsgbuf), "[PLL failed (%llx), InfiniPath hardware unusable]", (unsigned long long) hwerrs & _QIB_PLL_FAIL); strlcat(msg, bitsmsg, msgl); /* ignore from now on, so disable until driver reloaded */ dd->cspec->hwerrmask &= ~(hwerrs & _QIB_PLL_FAIL); qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask); } if (hwerrs & QLOGIC_IB_HWE_SERDESPLLFAILED) { /* * If it occurs, it is left masked since the eternal * interface is unused. */ dd->cspec->hwerrmask &= ~QLOGIC_IB_HWE_SERDESPLLFAILED; qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask); } qib_dev_err(dd, "%s hardware error\n", msg); if (isfatal && !dd->diag_client) { qib_dev_err(dd, "Fatal Hardware Error, no longer usable, SN %.16s\n", dd->serial); /* * For /sys status file and user programs to print; if no * trailing brace is copied, we'll know it was truncated. */ if (dd->freezemsg) snprintf(dd->freezemsg, dd->freezelen, "{%s}", msg); qib_disable_after_error(dd); } bail:; } /** * qib_7220_init_hwerrors - enable hardware errors * @dd: the qlogic_ib device * * now that we have finished initializing everything that might reasonably * cause a hardware error, and cleared those errors bits as they occur, * we can enable hardware errors in the mask (potentially enabling * freeze mode), and enable hardware errors as errors (along with * everything else) in errormask */ static void qib_7220_init_hwerrors(struct qib_devdata *dd) { u64 val; u64 extsval; extsval = qib_read_kreg64(dd, kr_extstatus); if (!(extsval & (QLOGIC_IB_EXTS_MEMBIST_ENDTEST | QLOGIC_IB_EXTS_MEMBIST_DISABLED))) qib_dev_err(dd, "MemBIST did not complete!\n"); if (extsval & QLOGIC_IB_EXTS_MEMBIST_DISABLED) qib_devinfo(dd->pcidev, "MemBIST is disabled.\n"); val = ~0ULL; /* default to all hwerrors become interrupts, */ val &= ~QLOGIC_IB_HWE_IB_UC_MEMORYPARITYERR; dd->cspec->hwerrmask = val; qib_write_kreg(dd, kr_hwerrclear, ~HWE_MASK(PowerOnBISTFailed)); qib_write_kreg(dd, kr_hwerrmask, dd->cspec->hwerrmask); /* clear all */ qib_write_kreg(dd, kr_errclear, ~0ULL); /* enable errors that are masked, at least this first time. */ qib_write_kreg(dd, kr_errmask, ~0ULL); dd->cspec->errormask = qib_read_kreg64(dd, kr_errmask); /* clear any interrupts up to this point (ints still not enabled) */ qib_write_kreg(dd, kr_intclear, ~0ULL); } /* * Disable and enable the armlaunch error. Used for PIO bandwidth testing * on chips that are count-based, rather than trigger-based. There is no * reference counting, but that's also fine, given the intended use. * Only chip-specific because it's all register accesses */ static void qib_set_7220_armlaunch(struct qib_devdata *dd, u32 enable) { if (enable) { qib_write_kreg(dd, kr_errclear, ERR_MASK(SendPioArmLaunchErr)); dd->cspec->errormask |= ERR_MASK(SendPioArmLaunchErr); } else dd->cspec->errormask &= ~ERR_MASK(SendPioArmLaunchErr); qib_write_kreg(dd, kr_errmask, dd->cspec->errormask); } /* * Formerly took parameter <which> in pre-shifted, * pre-merged form with LinkCmd and LinkInitCmd * together, and assuming the zero was NOP. */ static void qib_set_ib_7220_lstate(struct qib_pportdata *ppd, u16 linkcmd, u16 linitcmd) { u64 mod_wd; struct qib_devdata *dd = ppd->dd; unsigned long flags; if (linitcmd == QLOGIC_IB_IBCC_LINKINITCMD_DISABLE) { /* * If we are told to disable, note that so link-recovery * code does not attempt to bring us back up. */ spin_lock_irqsave(&ppd->lflags_lock, flags); ppd->lflags |= QIBL_IB_LINK_DISABLED; spin_unlock_irqrestore(&ppd->lflags_lock, flags); } else if (linitcmd || linkcmd == QLOGIC_IB_IBCC_LINKCMD_DOWN) { /* * Any other linkinitcmd will lead to LINKDOWN and then * to INIT (if all is well), so clear flag to let * link-recovery code attempt to bring us back up. */ spin_lock_irqsave(&ppd->lflags_lock, flags); ppd->lflags &= ~QIBL_IB_LINK_DISABLED; spin_unlock_irqrestore(&ppd->lflags_lock, flags); } mod_wd = (linkcmd << IBA7220_IBCC_LINKCMD_SHIFT) | (linitcmd << QLOGIC_IB_IBCC_LINKINITCMD_SHIFT); qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl | mod_wd); /* write to chip to prevent back-to-back writes of ibc reg */ qib_write_kreg(dd, kr_scratch, 0); } /* * All detailed interaction with the SerDes has been moved to qib_sd7220.c * * The portion of IBA7220-specific bringup_serdes() that actually deals with * registers and memory within the SerDes itself is qib_sd7220_init(). */ /** * qib_7220_bringup_serdes - bring up the serdes * @ppd: physical port on the qlogic_ib device */ static int qib_7220_bringup_serdes(struct qib_pportdata *ppd) { struct qib_devdata *dd = ppd->dd; u64 val, prev_val, guid, ibc; int ret = 0; /* Put IBC in reset, sends disabled */ dd->control &= ~QLOGIC_IB_C_LINKENABLE; qib_write_kreg(dd, kr_control, 0ULL); if (qib_compat_ddr_negotiate) { ppd->cpspec->ibdeltainprog = 1; ppd->cpspec->ibsymsnap = read_7220_creg32(dd, cr_ibsymbolerr); ppd->cpspec->iblnkerrsnap = read_7220_creg32(dd, cr_iblinkerrrecov); } /* flowcontrolwatermark is in units of KBytes */ ibc = 0x5ULL << SYM_LSB(IBCCtrl, FlowCtrlWaterMark); /* * How often flowctrl sent. More or less in usecs; balance against * watermark value, so that in theory senders always get a flow * control update in time to not let the IB link go idle. */ ibc |= 0x3ULL << SYM_LSB(IBCCtrl, FlowCtrlPeriod); /* max error tolerance */ ibc |= 0xfULL << SYM_LSB(IBCCtrl, PhyerrThreshold); /* use "real" buffer space for */ ibc |= 4ULL << SYM_LSB(IBCCtrl, CreditScale); /* IB credit flow control. */ ibc |= 0xfULL << SYM_LSB(IBCCtrl, OverrunThreshold); /* * set initial max size pkt IBC will send, including ICRC; it's the * PIO buffer size in dwords, less 1; also see qib_set_mtu() */ ibc |= ((u64)(ppd->ibmaxlen >> 2) + 1) << SYM_LSB(IBCCtrl, MaxPktLen); ppd->cpspec->ibcctrl = ibc; /* without linkcmd or linkinitcmd! */ /* initially come up waiting for TS1, without sending anything. */ val = ppd->cpspec->ibcctrl | (QLOGIC_IB_IBCC_LINKINITCMD_DISABLE << QLOGIC_IB_IBCC_LINKINITCMD_SHIFT); qib_write_kreg(dd, kr_ibcctrl, val); if (!ppd->cpspec->ibcddrctrl) { /* not on re-init after reset */ ppd->cpspec->ibcddrctrl = qib_read_kreg64(dd, kr_ibcddrctrl); if (ppd->link_speed_enabled == (QIB_IB_SDR | QIB_IB_DDR)) ppd->cpspec->ibcddrctrl |= IBA7220_IBC_SPEED_AUTONEG_MASK | IBA7220_IBC_IBTA_1_2_MASK; else ppd->cpspec->ibcddrctrl |= ppd->link_speed_enabled == QIB_IB_DDR ? IBA7220_IBC_SPEED_DDR : IBA7220_IBC_SPEED_SDR; if ((ppd->link_width_enabled & (IB_WIDTH_1X | IB_WIDTH_4X)) == (IB_WIDTH_1X | IB_WIDTH_4X)) ppd->cpspec->ibcddrctrl |= IBA7220_IBC_WIDTH_AUTONEG; else ppd->cpspec->ibcddrctrl |= ppd->link_width_enabled == IB_WIDTH_4X ? IBA7220_IBC_WIDTH_4X_ONLY : IBA7220_IBC_WIDTH_1X_ONLY; /* always enable these on driver reload, not sticky */ ppd->cpspec->ibcddrctrl |= IBA7220_IBC_RXPOL_MASK << IBA7220_IBC_RXPOL_SHIFT; ppd->cpspec->ibcddrctrl |= IBA7220_IBC_HRTBT_MASK << IBA7220_IBC_HRTBT_SHIFT; /* enable automatic lane reversal detection for receive */ ppd->cpspec->ibcddrctrl |= IBA7220_IBC_LANE_REV_SUPPORTED; } else /* write to chip to prevent back-to-back writes of ibc reg */ qib_write_kreg(dd, kr_scratch, 0); qib_write_kreg(dd, kr_ibcddrctrl, ppd->cpspec->ibcddrctrl); qib_write_kreg(dd, kr_scratch, 0); qib_write_kreg(dd, kr_ncmodectrl, 0Ull); qib_write_kreg(dd, kr_scratch, 0); ret = qib_sd7220_init(dd); val = qib_read_kreg64(dd, kr_xgxs_cfg); prev_val = val; val |= QLOGIC_IB_XGXS_FC_SAFE; if (val != prev_val) { qib_write_kreg(dd, kr_xgxs_cfg, val); qib_read_kreg32(dd, kr_scratch); } if (val & QLOGIC_IB_XGXS_RESET) val &= ~QLOGIC_IB_XGXS_RESET; if (val != prev_val) qib_write_kreg(dd, kr_xgxs_cfg, val); /* first time through, set port guid */ if (!ppd->guid) ppd->guid = dd->base_guid; guid = be64_to_cpu(ppd->guid); qib_write_kreg(dd, kr_hrtbt_guid, guid); if (!ret) { dd->control |= QLOGIC_IB_C_LINKENABLE; qib_write_kreg(dd, kr_control, dd->control); } else /* write to chip to prevent back-to-back writes of ibc reg */ qib_write_kreg(dd, kr_scratch, 0); return ret; } /** * qib_7220_quiet_serdes - set serdes to txidle * @ppd: physical port of the qlogic_ib device * Called when driver is being unloaded */ static void qib_7220_quiet_serdes(struct qib_pportdata *ppd) { u64 val; struct qib_devdata *dd = ppd->dd; unsigned long flags; /* disable IBC */ dd->control &= ~QLOGIC_IB_C_LINKENABLE; qib_write_kreg(dd, kr_control, dd->control | QLOGIC_IB_C_FREEZEMODE); ppd->cpspec->chase_end = 0; if (ppd->cpspec->chase_timer.function) /* if initted */ del_timer_sync(&ppd->cpspec->chase_timer); if (ppd->cpspec->ibsymdelta || ppd->cpspec->iblnkerrdelta || ppd->cpspec->ibdeltainprog) { u64 diagc; /* enable counter writes */ diagc = qib_read_kreg64(dd, kr_hwdiagctrl); qib_write_kreg(dd, kr_hwdiagctrl, diagc | SYM_MASK(HwDiagCtrl, CounterWrEnable)); if (ppd->cpspec->ibsymdelta || ppd->cpspec->ibdeltainprog) { val = read_7220_creg32(dd, cr_ibsymbolerr); if (ppd->cpspec->ibdeltainprog) val -= val - ppd->cpspec->ibsymsnap; val -= ppd->cpspec->ibsymdelta; write_7220_creg(dd, cr_ibsymbolerr, val); } if (ppd->cpspec->iblnkerrdelta || ppd->cpspec->ibdeltainprog) { val = read_7220_creg32(dd, cr_iblinkerrrecov); if (ppd->cpspec->ibdeltainprog) val -= val - ppd->cpspec->iblnkerrsnap; val -= ppd->cpspec->iblnkerrdelta; write_7220_creg(dd, cr_iblinkerrrecov, val); } /* and disable counter writes */ qib_write_kreg(dd, kr_hwdiagctrl, diagc); } qib_set_ib_7220_lstate(ppd, 0, QLOGIC_IB_IBCC_LINKINITCMD_DISABLE); spin_lock_irqsave(&ppd->lflags_lock, flags); ppd->lflags &= ~QIBL_IB_AUTONEG_INPROG; spin_unlock_irqrestore(&ppd->lflags_lock, flags); wake_up(&ppd->cpspec->autoneg_wait); cancel_delayed_work_sync(&ppd->cpspec->autoneg_work); shutdown_7220_relock_poll(ppd->dd); val = qib_read_kreg64(ppd->dd, kr_xgxs_cfg); val |= QLOGIC_IB_XGXS_RESET; qib_write_kreg(ppd->dd, kr_xgxs_cfg, val); } /** * qib_setup_7220_setextled - set the state of the two external LEDs * @ppd: the qlogic_ib device * @on: whether the link is up or not * * The exact combo of LEDs if on is true is determined by looking * at the ibcstatus. * * These LEDs indicate the physical and logical state of IB link. * For this chip (at least with recommended board pinouts), LED1 * is Yellow (logical state) and LED2 is Green (physical state), * * Note: We try to match the Mellanox HCA LED behavior as best * we can. Green indicates physical link state is OK (something is * plugged in, and we can train). * Amber indicates the link is logically up (ACTIVE). * Mellanox further blinks the amber LED to indicate data packet * activity, but we have no hardware support for that, so it would * require waking up every 10-20 msecs and checking the counters * on the chip, and then turning the LED off if appropriate. That's * visible overhead, so not something we will do. * */ static void qib_setup_7220_setextled(struct qib_pportdata *ppd, u32 on) { struct qib_devdata *dd = ppd->dd; u64 extctl, ledblink = 0, val, lst, ltst; unsigned long flags; /* * The diags use the LED to indicate diag info, so we leave * the external LED alone when the diags are running. */ if (dd->diag_client) return; if (ppd->led_override) { ltst = (ppd->led_override & QIB_LED_PHYS) ? IB_PHYSPORTSTATE_LINKUP : IB_PHYSPORTSTATE_DISABLED, lst = (ppd->led_override & QIB_LED_LOG) ? IB_PORT_ACTIVE : IB_PORT_DOWN; } else if (on) { val = qib_read_kreg64(dd, kr_ibcstatus); ltst = qib_7220_phys_portstate(val); lst = qib_7220_iblink_state(val); } else { ltst = 0; lst = 0; } spin_lock_irqsave(&dd->cspec->gpio_lock, flags); extctl = dd->cspec->extctrl & ~(SYM_MASK(EXTCtrl, LEDPriPortGreenOn) | SYM_MASK(EXTCtrl, LEDPriPortYellowOn)); if (ltst == IB_PHYSPORTSTATE_LINKUP) { extctl |= SYM_MASK(EXTCtrl, LEDPriPortGreenOn); /* * counts are in chip clock (4ns) periods. * This is 1/16 sec (66.6ms) on, * 3/16 sec (187.5 ms) off, with packets rcvd */ ledblink = ((66600 * 1000UL / 4) << IBA7220_LEDBLINK_ON_SHIFT) | ((187500 * 1000UL / 4) << IBA7220_LEDBLINK_OFF_SHIFT); } if (lst == IB_PORT_ACTIVE) extctl |= SYM_MASK(EXTCtrl, LEDPriPortYellowOn); dd->cspec->extctrl = extctl; qib_write_kreg(dd, kr_extctrl, extctl); spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags); if (ledblink) /* blink the LED on packet receive */ qib_write_kreg(dd, kr_rcvpktledcnt, ledblink); } /* * qib_setup_7220_cleanup - clean up any per-chip chip-specific stuff * @dd: the qlogic_ib device * * This is called during driver unload. * */ static void qib_setup_7220_cleanup(struct qib_devdata *dd) { qib_free_irq(dd); kfree(dd->cspec->cntrs); kfree(dd->cspec->portcntrs); } /* * This is only called for SDmaInt. * SDmaDisabled is handled on the error path. */ static void sdma_7220_intr(struct qib_pportdata *ppd, u64 istat) { unsigned long flags; spin_lock_irqsave(&ppd->sdma_lock, flags); switch (ppd->sdma_state.current_state) { case qib_sdma_state_s00_hw_down: break; case qib_sdma_state_s10_hw_start_up_wait: __qib_sdma_process_event(ppd, qib_sdma_event_e20_hw_started); break; case qib_sdma_state_s20_idle: break; case qib_sdma_state_s30_sw_clean_up_wait: break; case qib_sdma_state_s40_hw_clean_up_wait: break; case qib_sdma_state_s50_hw_halt_wait: __qib_sdma_process_event(ppd, qib_sdma_event_e60_hw_halted); break; case qib_sdma_state_s99_running: /* too chatty to print here */ __qib_sdma_intr(ppd); break; } spin_unlock_irqrestore(&ppd->sdma_lock, flags); } static void qib_wantpiobuf_7220_intr(struct qib_devdata *dd, u32 needint) { unsigned long flags; spin_lock_irqsave(&dd->sendctrl_lock, flags); if (needint) { if (!(dd->sendctrl & SYM_MASK(SendCtrl, SendBufAvailUpd))) goto done; /* * blip the availupd off, next write will be on, so * we ensure an avail update, regardless of threshold or * buffers becoming free, whenever we want an interrupt */ qib_write_kreg(dd, kr_sendctrl, dd->sendctrl & ~SYM_MASK(SendCtrl, SendBufAvailUpd)); qib_write_kreg(dd, kr_scratch, 0ULL); dd->sendctrl |= SYM_MASK(SendCtrl, SendIntBufAvail); } else dd->sendctrl &= ~SYM_MASK(SendCtrl, SendIntBufAvail); qib_write_kreg(dd, kr_sendctrl, dd->sendctrl); qib_write_kreg(dd, kr_scratch, 0ULL); done: spin_unlock_irqrestore(&dd->sendctrl_lock, flags); } /* * Handle errors and unusual events first, separate function * to improve cache hits for fast path interrupt handling. */ static noinline void unlikely_7220_intr(struct qib_devdata *dd, u64 istat) { if (unlikely(istat & ~QLOGIC_IB_I_BITSEXTANT)) qib_dev_err(dd, "interrupt with unknown interrupts %Lx set\n", istat & ~QLOGIC_IB_I_BITSEXTANT); if (istat & QLOGIC_IB_I_GPIO) { u32 gpiostatus; /* * Boards for this chip currently don't use GPIO interrupts, * so clear by writing GPIOstatus to GPIOclear, and complain * to alert developer. To avoid endless repeats, clear * the bits in the mask, since there is some kind of * programming error or chip problem. */ gpiostatus = qib_read_kreg32(dd, kr_gpio_status); /* * In theory, writing GPIOstatus to GPIOclear could * have a bad side-effect on some diagnostic that wanted * to poll for a status-change, but the various shadows * make that problematic at best. Diags will just suppress * all GPIO interrupts during such tests. */ qib_write_kreg(dd, kr_gpio_clear, gpiostatus); if (gpiostatus) { const u32 mask = qib_read_kreg32(dd, kr_gpio_mask); u32 gpio_irq = mask & gpiostatus; /* * A bit set in status and (chip) Mask register * would cause an interrupt. Since we are not * expecting any, report it. Also check that the * chip reflects our shadow, report issues, * and refresh from the shadow. */ /* * Clear any troublemakers, and update chip * from shadow */ dd->cspec->gpio_mask &= ~gpio_irq; qib_write_kreg(dd, kr_gpio_mask, dd->cspec->gpio_mask); } } if (istat & QLOGIC_IB_I_ERROR) { u64 estat; qib_stats.sps_errints++; estat = qib_read_kreg64(dd, kr_errstatus); if (!estat) qib_devinfo(dd->pcidev, "error interrupt (%Lx), but no error bits set!\n", istat); else handle_7220_errors(dd, estat); } } static irqreturn_t qib_7220intr(int irq, void *data) { struct qib_devdata *dd = data; irqreturn_t ret; u64 istat; u64 ctxtrbits; u64 rmask; unsigned i; if ((dd->flags & (QIB_PRESENT | QIB_BADINTR)) != QIB_PRESENT) { /* * This return value is not great, but we do not want the * interrupt core code to remove our interrupt handler * because we don't appear to be handling an interrupt * during a chip reset. */ ret = IRQ_HANDLED; goto bail; } istat = qib_read_kreg64(dd, kr_intstatus); if (unlikely(!istat)) { ret = IRQ_NONE; /* not our interrupt, or already handled */ goto bail; } if (unlikely(istat == -1)) { qib_bad_intrstatus(dd); /* don't know if it was our interrupt or not */ ret = IRQ_NONE; goto bail; } this_cpu_inc(*dd->int_counter); if (unlikely(istat & (~QLOGIC_IB_I_BITSEXTANT | QLOGIC_IB_I_GPIO | QLOGIC_IB_I_ERROR))) unlikely_7220_intr(dd, istat); /* * Clear the interrupt bits we found set, relatively early, so we * "know" know the chip will have seen this by the time we process * the queue, and will re-interrupt if necessary. The processor * itself won't take the interrupt again until we return. */ qib_write_kreg(dd, kr_intclear, istat); /* * Handle kernel receive queues before checking for pio buffers * available since receives can overflow; piobuf waiters can afford * a few extra cycles, since they were waiting anyway. */ ctxtrbits = istat & ((QLOGIC_IB_I_RCVAVAIL_MASK << QLOGIC_IB_I_RCVAVAIL_SHIFT) | (QLOGIC_IB_I_RCVURG_MASK << QLOGIC_IB_I_RCVURG_SHIFT)); if (ctxtrbits) { rmask = (1ULL << QLOGIC_IB_I_RCVAVAIL_SHIFT) | (1ULL << QLOGIC_IB_I_RCVURG_SHIFT); for (i = 0; i < dd->first_user_ctxt; i++) { if (ctxtrbits & rmask) { ctxtrbits &= ~rmask; qib_kreceive(dd->rcd[i], NULL, NULL); } rmask <<= 1; } if (ctxtrbits) { ctxtrbits = (ctxtrbits >> QLOGIC_IB_I_RCVAVAIL_SHIFT) | (ctxtrbits >> QLOGIC_IB_I_RCVURG_SHIFT); qib_handle_urcv(dd, ctxtrbits); } } /* only call for SDmaInt */ if (istat & QLOGIC_IB_I_SDMAINT) sdma_7220_intr(dd->pport, istat); if ((istat & QLOGIC_IB_I_SPIOBUFAVAIL) && (dd->flags & QIB_INITTED)) qib_ib_piobufavail(dd); ret = IRQ_HANDLED; bail: return ret; } /* * Set up our chip-specific interrupt handler. * The interrupt type has already been setup, so * we just need to do the registration and error checking. * If we are using MSI interrupts, we may fall back to * INTx later, if the interrupt handler doesn't get called * within 1/2 second (see verify_interrupt()). */ static void qib_setup_7220_interrupt(struct qib_devdata *dd) { int ret; ret = pci_request_irq(dd->pcidev, 0, qib_7220intr, NULL, dd, QIB_DRV_NAME); if (ret) qib_dev_err(dd, "Couldn't setup %s interrupt (irq=%d): %d\n", dd->pcidev->msi_enabled ? "MSI" : "INTx", pci_irq_vector(dd->pcidev, 0), ret); } /** * qib_7220_boardname - fill in the board name * @dd: the qlogic_ib device * * info is based on the board revision register */ static void qib_7220_boardname(struct qib_devdata *dd) { u32 boardid; boardid = SYM_FIELD(dd->revision, Revision, BoardID); switch (boardid) { case 1: dd->boardname = "InfiniPath_QLE7240"; break; case 2: dd->boardname = "InfiniPath_QLE7280"; break; default: qib_dev_err(dd, "Unknown 7220 board with ID %u\n", boardid); dd->boardname = "Unknown_InfiniPath_7220"; break; } if (dd->majrev != 5 || !dd->minrev || dd->minrev > 2) qib_dev_err(dd, "Unsupported InfiniPath hardware revision %u.%u!\n", dd->majrev, dd->minrev); snprintf(dd->boardversion, sizeof(dd->boardversion), "ChipABI %u.%u, %s, InfiniPath%u %u.%u, SW Compat %u\n", QIB_CHIP_VERS_MAJ, QIB_CHIP_VERS_MIN, dd->boardname, (unsigned int)SYM_FIELD(dd->revision, Revision_R, Arch), dd->majrev, dd->minrev, (unsigned int)SYM_FIELD(dd->revision, Revision_R, SW)); } /* * This routine sleeps, so it can only be called from user context, not * from interrupt context. */ static int qib_setup_7220_reset(struct qib_devdata *dd) { u64 val; int i; int ret; u16 cmdval; u8 int_line, clinesz; unsigned long flags; qib_pcie_getcmd(dd, &cmdval, &int_line, &clinesz); /* Use dev_err so it shows up in logs, etc. */ qib_dev_err(dd, "Resetting InfiniPath unit %u\n", dd->unit); /* no interrupts till re-initted */ qib_7220_set_intr_state(dd, 0); dd->pport->cpspec->ibdeltainprog = 0; dd->pport->cpspec->ibsymdelta = 0; dd->pport->cpspec->iblnkerrdelta = 0; /* * Keep chip from being accessed until we are ready. Use * writeq() directly, to allow the write even though QIB_PRESENT * isn't set. */ dd->flags &= ~(QIB_INITTED | QIB_PRESENT); /* so we check interrupts work again */ dd->z_int_counter = qib_int_counter(dd); val = dd->control | QLOGIC_IB_C_RESET; writeq(val, &dd->kregbase[kr_control]); mb(); /* prevent compiler reordering around actual reset */ for (i = 1; i <= 5; i++) { /* * Allow MBIST, etc. to complete; longer on each retry. * We sometimes get machine checks from bus timeout if no * response, so for now, make it *really* long. */ msleep(1000 + (1 + i) * 2000); qib_pcie_reenable(dd, cmdval, int_line, clinesz); /* * Use readq directly, so we don't need to mark it as PRESENT * until we get a successful indication that all is well. */ val = readq(&dd->kregbase[kr_revision]); if (val == dd->revision) { dd->flags |= QIB_PRESENT; /* it's back */ ret = qib_reinit_intr(dd); goto bail; } } ret = 0; /* failed */ bail: if (ret) { if (qib_pcie_params(dd, dd->lbus_width, NULL)) qib_dev_err(dd, "Reset failed to setup PCIe or interrupts; continuing anyway\n"); /* hold IBC in reset, no sends, etc till later */ qib_write_kreg(dd, kr_control, 0ULL); /* clear the reset error, init error/hwerror mask */ qib_7220_init_hwerrors(dd); /* do setup similar to speed or link-width changes */ if (dd->pport->cpspec->ibcddrctrl & IBA7220_IBC_IBTA_1_2_MASK) dd->cspec->presets_needed = 1; spin_lock_irqsave(&dd->pport->lflags_lock, flags); dd->pport->lflags |= QIBL_IB_FORCE_NOTIFY; dd->pport->lflags &= ~QIBL_IB_AUTONEG_FAILED; spin_unlock_irqrestore(&dd->pport->lflags_lock, flags); } return ret; } /** * qib_7220_put_tid - write a TID to the chip * @dd: the qlogic_ib device * @tidptr: pointer to the expected TID (in chip) to update * @type: 0 for eager, 1 for expected * @pa: physical address of in memory buffer; tidinvalid if freeing */ static void qib_7220_put_tid(struct qib_devdata *dd, u64 __iomem *tidptr, u32 type, unsigned long pa) { if (pa != dd->tidinvalid) { u64 chippa = pa >> IBA7220_TID_PA_SHIFT; /* paranoia checks */ if (pa != (chippa << IBA7220_TID_PA_SHIFT)) { qib_dev_err(dd, "Physaddr %lx not 2KB aligned!\n", pa); return; } if (chippa >= (1UL << IBA7220_TID_SZ_SHIFT)) { qib_dev_err(dd, "Physical page address 0x%lx larger than supported\n", pa); return; } if (type == RCVHQ_RCV_TYPE_EAGER) chippa |= dd->tidtemplate; else /* for now, always full 4KB page */ chippa |= IBA7220_TID_SZ_4K; pa = chippa; } writeq(pa, tidptr); } /** * qib_7220_clear_tids - clear all TID entries for a ctxt, expected and eager * @dd: the qlogic_ib device * @rcd: the ctxt * * clear all TID entries for a ctxt, expected and eager. * Used from qib_close(). On this chip, TIDs are only 32 bits, * not 64, but they are still on 64 bit boundaries, so tidbase * is declared as u64 * for the pointer math, even though we write 32 bits */ static void qib_7220_clear_tids(struct qib_devdata *dd, struct qib_ctxtdata *rcd) { u64 __iomem *tidbase; unsigned long tidinv; u32 ctxt; int i; if (!dd->kregbase || !rcd) return; ctxt = rcd->ctxt; tidinv = dd->tidinvalid; tidbase = (u64 __iomem *) ((char __iomem *)(dd->kregbase) + dd->rcvtidbase + ctxt * dd->rcvtidcnt * sizeof(*tidbase)); for (i = 0; i < dd->rcvtidcnt; i++) qib_7220_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EXPECTED, tidinv); tidbase = (u64 __iomem *) ((char __iomem *)(dd->kregbase) + dd->rcvegrbase + rcd->rcvegr_tid_base * sizeof(*tidbase)); for (i = 0; i < rcd->rcvegrcnt; i++) qib_7220_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EAGER, tidinv); } /** * qib_7220_tidtemplate - setup constants for TID updates * @dd: the qlogic_ib device * * We setup stuff that we use a lot, to avoid calculating each time */ static void qib_7220_tidtemplate(struct qib_devdata *dd) { if (dd->rcvegrbufsize == 2048) dd->tidtemplate = IBA7220_TID_SZ_2K; else if (dd->rcvegrbufsize == 4096) dd->tidtemplate = IBA7220_TID_SZ_4K; dd->tidinvalid = 0; } /** * qib_7220_get_base_info - set chip-specific flags for user code * @rcd: the qlogic_ib ctxt * @kinfo: qib_base_info pointer * * We set the PCIE flag because the lower bandwidth on PCIe vs * HyperTransport can affect some user packet algorithims. */ static int qib_7220_get_base_info(struct qib_ctxtdata *rcd, struct qib_base_info *kinfo) { kinfo->spi_runtime_flags |= QIB_RUNTIME_PCIE | QIB_RUNTIME_NODMA_RTAIL | QIB_RUNTIME_SDMA; if (rcd->dd->flags & QIB_USE_SPCL_TRIG) kinfo->spi_runtime_flags |= QIB_RUNTIME_SPECIAL_TRIGGER; return 0; } static struct qib_message_header * qib_7220_get_msgheader(struct qib_devdata *dd, __le32 *rhf_addr) { u32 offset = qib_hdrget_offset(rhf_addr); return (struct qib_message_header *) (rhf_addr - dd->rhf_offset + offset); } static void qib_7220_config_ctxts(struct qib_devdata *dd) { unsigned long flags; u32 nchipctxts; nchipctxts = qib_read_kreg32(dd, kr_portcnt); dd->cspec->numctxts = nchipctxts; if (qib_n_krcv_queues > 1) { dd->qpn_mask = 0x3e; dd->first_user_ctxt = qib_n_krcv_queues * dd->num_pports; if (dd->first_user_ctxt > nchipctxts) dd->first_user_ctxt = nchipctxts; } else dd->first_user_ctxt = dd->num_pports; dd->n_krcv_queues = dd->first_user_ctxt; if (!qib_cfgctxts) { int nctxts = dd->first_user_ctxt + num_online_cpus(); if (nctxts <= 5) dd->ctxtcnt = 5; else if (nctxts <= 9) dd->ctxtcnt = 9; else if (nctxts <= nchipctxts) dd->ctxtcnt = nchipctxts; } else if (qib_cfgctxts <= nchipctxts) dd->ctxtcnt = qib_cfgctxts; if (!dd->ctxtcnt) /* none of the above, set to max */ dd->ctxtcnt = nchipctxts; /* * Chip can be configured for 5, 9, or 17 ctxts, and choice * affects number of eager TIDs per ctxt (1K, 2K, 4K). * Lock to be paranoid about later motion, etc. */ spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags); if (dd->ctxtcnt > 9) dd->rcvctrl |= 2ULL << IBA7220_R_CTXTCFG_SHIFT; else if (dd->ctxtcnt > 5) dd->rcvctrl |= 1ULL << IBA7220_R_CTXTCFG_SHIFT; /* else configure for default 5 receive ctxts */ if (dd->qpn_mask) dd->rcvctrl |= 1ULL << QIB_7220_RcvCtrl_RcvQPMapEnable_LSB; qib_write_kreg(dd, kr_rcvctrl, dd->rcvctrl); spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags); /* kr_rcvegrcnt changes based on the number of contexts enabled */ dd->cspec->rcvegrcnt = qib_read_kreg32(dd, kr_rcvegrcnt); dd->rcvhdrcnt = max(dd->cspec->rcvegrcnt, IBA7220_KRCVEGRCNT); } static int qib_7220_get_ib_cfg(struct qib_pportdata *ppd, int which) { int lsb, ret = 0; u64 maskr; /* right-justified mask */ switch (which) { case QIB_IB_CFG_LWID_ENB: /* Get allowed Link-width */ ret = ppd->link_width_enabled; goto done; case QIB_IB_CFG_LWID: /* Get currently active Link-width */ ret = ppd->link_width_active; goto done; case QIB_IB_CFG_SPD_ENB: /* Get allowed Link speeds */ ret = ppd->link_speed_enabled; goto done; case QIB_IB_CFG_SPD: /* Get current Link spd */ ret = ppd->link_speed_active; goto done; case QIB_IB_CFG_RXPOL_ENB: /* Get Auto-RX-polarity enable */ lsb = IBA7220_IBC_RXPOL_SHIFT; maskr = IBA7220_IBC_RXPOL_MASK; break; case QIB_IB_CFG_LREV_ENB: /* Get Auto-Lane-reversal enable */ lsb = IBA7220_IBC_LREV_SHIFT; maskr = IBA7220_IBC_LREV_MASK; break; case QIB_IB_CFG_LINKLATENCY: ret = qib_read_kreg64(ppd->dd, kr_ibcddrstatus) & IBA7220_DDRSTAT_LINKLAT_MASK; goto done; case QIB_IB_CFG_OP_VLS: ret = ppd->vls_operational; goto done; case QIB_IB_CFG_VL_HIGH_CAP: ret = 0; goto done; case QIB_IB_CFG_VL_LOW_CAP: ret = 0; goto done; case QIB_IB_CFG_OVERRUN_THRESH: /* IB overrun threshold */ ret = SYM_FIELD(ppd->cpspec->ibcctrl, IBCCtrl, OverrunThreshold); goto done; case QIB_IB_CFG_PHYERR_THRESH: /* IB PHY error threshold */ ret = SYM_FIELD(ppd->cpspec->ibcctrl, IBCCtrl, PhyerrThreshold); goto done; case QIB_IB_CFG_LINKDEFAULT: /* IB link default (sleep/poll) */ /* will only take effect when the link state changes */ ret = (ppd->cpspec->ibcctrl & SYM_MASK(IBCCtrl, LinkDownDefaultState)) ? IB_LINKINITCMD_SLEEP : IB_LINKINITCMD_POLL; goto done; case QIB_IB_CFG_HRTBT: /* Get Heartbeat off/enable/auto */ lsb = IBA7220_IBC_HRTBT_SHIFT; maskr = IBA7220_IBC_HRTBT_MASK; break; case QIB_IB_CFG_PMA_TICKS: /* * 0x00 = 10x link transfer rate or 4 nsec. for 2.5Gbs * Since the clock is always 250MHz, the value is 1 or 0. */ ret = (ppd->link_speed_active == QIB_IB_DDR); goto done; default: ret = -EINVAL; goto done; } ret = (int)((ppd->cpspec->ibcddrctrl >> lsb) & maskr); done: return ret; } static int qib_7220_set_ib_cfg(struct qib_pportdata *ppd, int which, u32 val) { struct qib_devdata *dd = ppd->dd; u64 maskr; /* right-justified mask */ int lsb, ret = 0, setforce = 0; u16 lcmd, licmd; unsigned long flags; u32 tmp = 0; switch (which) { case QIB_IB_CFG_LIDLMC: /* * Set LID and LMC. Combined to avoid possible hazard * caller puts LMC in 16MSbits, DLID in 16LSbits of val */ lsb = IBA7220_IBC_DLIDLMC_SHIFT; maskr = IBA7220_IBC_DLIDLMC_MASK; break; case QIB_IB_CFG_LWID_ENB: /* set allowed Link-width */ /* * As with speed, only write the actual register if * the link is currently down, otherwise takes effect * on next link change. */ ppd->link_width_enabled = val; if (!(ppd->lflags & QIBL_LINKDOWN)) goto bail; /* * We set the QIBL_IB_FORCE_NOTIFY bit so updown * will get called because we want update * link_width_active, and the change may not take * effect for some time (if we are in POLL), so this * flag will force the updown routine to be called * on the next ibstatuschange down interrupt, even * if it's not an down->up transition. */ val--; /* convert from IB to chip */ maskr = IBA7220_IBC_WIDTH_MASK; lsb = IBA7220_IBC_WIDTH_SHIFT; setforce = 1; break; case QIB_IB_CFG_SPD_ENB: /* set allowed Link speeds */ /* * If we turn off IB1.2, need to preset SerDes defaults, * but not right now. Set a flag for the next time * we command the link down. As with width, only write the * actual register if the link is currently down, otherwise * takes effect on next link change. Since setting is being * explicitly requested (via MAD or sysfs), clear autoneg * failure status if speed autoneg is enabled. */ ppd->link_speed_enabled = val; if ((ppd->cpspec->ibcddrctrl & IBA7220_IBC_IBTA_1_2_MASK) && !(val & (val - 1))) dd->cspec->presets_needed = 1; if (!(ppd->lflags & QIBL_LINKDOWN)) goto bail; /* * We set the QIBL_IB_FORCE_NOTIFY bit so updown * will get called because we want update * link_speed_active, and the change may not take * effect for some time (if we are in POLL), so this * flag will force the updown routine to be called * on the next ibstatuschange down interrupt, even * if it's not an down->up transition. */ if (val == (QIB_IB_SDR | QIB_IB_DDR)) { val = IBA7220_IBC_SPEED_AUTONEG_MASK | IBA7220_IBC_IBTA_1_2_MASK; spin_lock_irqsave(&ppd->lflags_lock, flags); ppd->lflags &= ~QIBL_IB_AUTONEG_FAILED; spin_unlock_irqrestore(&ppd->lflags_lock, flags); } else val = val == QIB_IB_DDR ? IBA7220_IBC_SPEED_DDR : IBA7220_IBC_SPEED_SDR; maskr = IBA7220_IBC_SPEED_AUTONEG_MASK | IBA7220_IBC_IBTA_1_2_MASK; /* IBTA 1.2 mode + speed bits are contiguous */ lsb = SYM_LSB(IBCDDRCtrl, IB_ENHANCED_MODE); setforce = 1; break; case QIB_IB_CFG_RXPOL_ENB: /* set Auto-RX-polarity enable */ lsb = IBA7220_IBC_RXPOL_SHIFT; maskr = IBA7220_IBC_RXPOL_MASK; break; case QIB_IB_CFG_LREV_ENB: /* set Auto-Lane-reversal enable */ lsb = IBA7220_IBC_LREV_SHIFT; maskr = IBA7220_IBC_LREV_MASK; break; case QIB_IB_CFG_OVERRUN_THRESH: /* IB overrun threshold */ maskr = SYM_FIELD(ppd->cpspec->ibcctrl, IBCCtrl, OverrunThreshold); if (maskr != val) { ppd->cpspec->ibcctrl &= ~SYM_MASK(IBCCtrl, OverrunThreshold); ppd->cpspec->ibcctrl |= (u64) val << SYM_LSB(IBCCtrl, OverrunThreshold); qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl); qib_write_kreg(dd, kr_scratch, 0); } goto bail; case QIB_IB_CFG_PHYERR_THRESH: /* IB PHY error threshold */ maskr = SYM_FIELD(ppd->cpspec->ibcctrl, IBCCtrl, PhyerrThreshold); if (maskr != val) { ppd->cpspec->ibcctrl &= ~SYM_MASK(IBCCtrl, PhyerrThreshold); ppd->cpspec->ibcctrl |= (u64) val << SYM_LSB(IBCCtrl, PhyerrThreshold); qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl); qib_write_kreg(dd, kr_scratch, 0); } goto bail; case QIB_IB_CFG_PKEYS: /* update pkeys */ maskr = (u64) ppd->pkeys[0] | ((u64) ppd->pkeys[1] << 16) | ((u64) ppd->pkeys[2] << 32) | ((u64) ppd->pkeys[3] << 48); qib_write_kreg(dd, kr_partitionkey, maskr); goto bail; case QIB_IB_CFG_LINKDEFAULT: /* IB link default (sleep/poll) */ /* will only take effect when the link state changes */ if (val == IB_LINKINITCMD_POLL) ppd->cpspec->ibcctrl &= ~SYM_MASK(IBCCtrl, LinkDownDefaultState); else /* SLEEP */ ppd->cpspec->ibcctrl |= SYM_MASK(IBCCtrl, LinkDownDefaultState); qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl); qib_write_kreg(dd, kr_scratch, 0); goto bail; case QIB_IB_CFG_MTU: /* update the MTU in IBC */ /* * Update our housekeeping variables, and set IBC max * size, same as init code; max IBC is max we allow in * buffer, less the qword pbc, plus 1 for ICRC, in dwords * Set even if it's unchanged, print debug message only * on changes. */ val = (ppd->ibmaxlen >> 2) + 1; ppd->cpspec->ibcctrl &= ~SYM_MASK(IBCCtrl, MaxPktLen); ppd->cpspec->ibcctrl |= (u64)val << SYM_LSB(IBCCtrl, MaxPktLen); qib_write_kreg(dd, kr_ibcctrl, ppd->cpspec->ibcctrl); qib_write_kreg(dd, kr_scratch, 0); goto bail; case QIB_IB_CFG_LSTATE: /* set the IB link state */ switch (val & 0xffff0000) { case IB_LINKCMD_DOWN: lcmd = QLOGIC_IB_IBCC_LINKCMD_DOWN; if (!ppd->cpspec->ibdeltainprog && qib_compat_ddr_negotiate) { ppd->cpspec->ibdeltainprog = 1; ppd->cpspec->ibsymsnap = read_7220_creg32(dd, cr_ibsymbolerr); ppd->cpspec->iblnkerrsnap = read_7220_creg32(dd, cr_iblinkerrrecov); } break; case IB_LINKCMD_ARMED: lcmd = QLOGIC_IB_IBCC_LINKCMD_ARMED; break; case IB_LINKCMD_ACTIVE: lcmd = QLOGIC_IB_IBCC_LINKCMD_ACTIVE; break; default: ret = -EINVAL; qib_dev_err(dd, "bad linkcmd req 0x%x\n", val >> 16); goto bail; } switch (val & 0xffff) { case IB_LINKINITCMD_NOP: licmd = 0; break; case IB_LINKINITCMD_POLL: licmd = QLOGIC_IB_IBCC_LINKINITCMD_POLL; break; case IB_LINKINITCMD_SLEEP: licmd = QLOGIC_IB_IBCC_LINKINITCMD_SLEEP; break; case IB_LINKINITCMD_DISABLE: licmd = QLOGIC_IB_IBCC_LINKINITCMD_DISABLE; ppd->cpspec->chase_end = 0; /* * stop state chase counter and timer, if running. * wait forpending timer, but don't clear .data (ppd)! */ if (ppd->cpspec->chase_timer.expires) { del_timer_sync(&ppd->cpspec->chase_timer); ppd->cpspec->chase_timer.expires = 0; } break; default: ret = -EINVAL; qib_dev_err(dd, "bad linkinitcmd req 0x%x\n", val & 0xffff); goto bail; } qib_set_ib_7220_lstate(ppd, lcmd, licmd); maskr = IBA7220_IBC_WIDTH_MASK; lsb = IBA7220_IBC_WIDTH_SHIFT; tmp = (ppd->cpspec->ibcddrctrl >> lsb) & maskr; /* If the width active on the chip does not match the * width in the shadow register, write the new active * width to the chip. * We don't have to worry about speed as the speed is taken * care of by set_7220_ibspeed_fast called by ib_updown. */ if (ppd->link_width_enabled-1 != tmp) { ppd->cpspec->ibcddrctrl &= ~(maskr << lsb); ppd->cpspec->ibcddrctrl |= (((u64)(ppd->link_width_enabled-1) & maskr) << lsb); qib_write_kreg(dd, kr_ibcddrctrl, ppd->cpspec->ibcddrctrl); qib_write_kreg(dd, kr_scratch, 0); spin_lock_irqsave(&ppd->lflags_lock, flags); ppd->lflags |= QIBL_IB_FORCE_NOTIFY; spin_unlock_irqrestore(&ppd->lflags_lock, flags); } goto bail; case QIB_IB_CFG_HRTBT: /* set Heartbeat off/enable/auto */ if (val > IBA7220_IBC_HRTBT_MASK) { ret = -EINVAL; goto bail; } lsb = IBA7220_IBC_HRTBT_SHIFT; maskr = IBA7220_IBC_HRTBT_MASK; break; default: ret = -EINVAL; goto bail; } ppd->cpspec->ibcddrctrl &= ~(maskr << lsb); ppd->cpspec->ibcddrctrl |= (((u64) val & maskr) << lsb); qib_write_kreg(dd, kr_ibcddrctrl, ppd->cpspec->ibcddrctrl); qib_write_kreg(dd, kr_scratch, 0); if (setforce) { spin_lock_irqsave(&ppd->lflags_lock, flags); ppd->lflags |= QIBL_IB_FORCE_NOTIFY; spin_unlock_irqrestore(&ppd->lflags_lock, flags); } bail: return ret; } static int qib_7220_set_loopback(struct qib_pportdata *ppd, const char *what) { int ret = 0; u64 val, ddr; if (!strncmp(what, "ibc", 3)) { ppd->cpspec->ibcctrl |= SYM_MASK(IBCCtrl, Loopback); val = 0; /* disable heart beat, so link will come up */ qib_devinfo(ppd->dd->pcidev, "Enabling IB%u:%u IBC loopback\n", ppd->dd->unit, ppd->port); } else if (!strncmp(what, "off", 3)) { ppd->cpspec->ibcctrl &= ~SYM_MASK(IBCCtrl, Loopback); /* enable heart beat again */ val = IBA7220_IBC_HRTBT_MASK << IBA7220_IBC_HRTBT_SHIFT; qib_devinfo(ppd->dd->pcidev, "Disabling IB%u:%u IBC loopback (normal)\n", ppd->dd->unit, ppd->port); } else ret = -EINVAL; if (!ret) { qib_write_kreg(ppd->dd, kr_ibcctrl, ppd->cpspec->ibcctrl); ddr = ppd->cpspec->ibcddrctrl & ~(IBA7220_IBC_HRTBT_MASK << IBA7220_IBC_HRTBT_SHIFT); ppd->cpspec->ibcddrctrl = ddr | val; qib_write_kreg(ppd->dd, kr_ibcddrctrl, ppd->cpspec->ibcddrctrl); qib_write_kreg(ppd->dd, kr_scratch, 0); } return ret; } static void qib_update_7220_usrhead(struct qib_ctxtdata *rcd, u64 hd, u32 updegr, u32 egrhd, u32 npkts) { if (updegr) qib_write_ureg(rcd->dd, ur_rcvegrindexhead, egrhd, rcd->ctxt); qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt); } static u32 qib_7220_hdrqempty(struct qib_ctxtdata *rcd) { u32 head, tail; head = qib_read_ureg32(rcd->dd, ur_rcvhdrhead, rcd->ctxt); if (rcd->rcvhdrtail_kvaddr) tail = qib_get_rcvhdrtail(rcd); else tail = qib_read_ureg32(rcd->dd, ur_rcvhdrtail, rcd->ctxt); return head == tail; } /* * Modify the RCVCTRL register in chip-specific way. This * is a function because bit positions and (future) register * location is chip-specifc, but the needed operations are * generic. <op> is a bit-mask because we often want to * do multiple modifications. */ static void rcvctrl_7220_mod(struct qib_pportdata *ppd, unsigned int op, int ctxt) { struct qib_devdata *dd = ppd->dd; u64 mask, val; unsigned long flags; spin_lock_irqsave(&dd->cspec->rcvmod_lock, flags); if (op & QIB_RCVCTRL_TAILUPD_ENB) dd->rcvctrl |= (1ULL << IBA7220_R_TAILUPD_SHIFT); if (op & QIB_RCVCTRL_TAILUPD_DIS) dd->rcvctrl &= ~(1ULL << IBA7220_R_TAILUPD_SHIFT); if (op & QIB_RCVCTRL_PKEY_ENB) dd->rcvctrl &= ~(1ULL << IBA7220_R_PKEY_DIS_SHIFT); if (op & QIB_RCVCTRL_PKEY_DIS) dd->rcvctrl |= (1ULL << IBA7220_R_PKEY_DIS_SHIFT); if (ctxt < 0) mask = (1ULL << dd->ctxtcnt) - 1; else mask = (1ULL << ctxt); if (op & QIB_RCVCTRL_CTXT_ENB) { /* always done for specific ctxt */ dd->rcvctrl |= (mask << SYM_LSB(RcvCtrl, PortEnable)); if (!(dd->flags & QIB_NODMA_RTAIL)) dd->rcvctrl |= 1ULL << IBA7220_R_TAILUPD_SHIFT; /* Write these registers before the context is enabled. */ qib_write_kreg_ctxt(dd, kr_rcvhdrtailaddr, ctxt, dd->rcd[ctxt]->rcvhdrqtailaddr_phys); qib_write_kreg_ctxt(dd, kr_rcvhdraddr, ctxt, dd->rcd[ctxt]->rcvhdrq_phys); dd->rcd[ctxt]->seq_cnt = 1; } if (op & QIB_RCVCTRL_CTXT_DIS) dd->rcvctrl &= ~(mask << SYM_LSB(RcvCtrl, PortEnable)); if (op & QIB_RCVCTRL_INTRAVAIL_ENB) dd->rcvctrl |= (mask << IBA7220_R_INTRAVAIL_SHIFT); if (op & QIB_RCVCTRL_INTRAVAIL_DIS) dd->rcvctrl &= ~(mask << IBA7220_R_INTRAVAIL_SHIFT); qib_write_kreg(dd, kr_rcvctrl, dd->rcvctrl); if ((op & QIB_RCVCTRL_INTRAVAIL_ENB) && dd->rhdrhead_intr_off) { /* arm rcv interrupt */ val = qib_read_ureg32(dd, ur_rcvhdrhead, ctxt) | dd->rhdrhead_intr_off; qib_write_ureg(dd, ur_rcvhdrhead, val, ctxt); } if (op & QIB_RCVCTRL_CTXT_ENB) { /* * Init the context registers also; if we were * disabled, tail and head should both be zero * already from the enable, but since we don't * know, we have to do it explicitly. */ val = qib_read_ureg32(dd, ur_rcvegrindextail, ctxt); qib_write_ureg(dd, ur_rcvegrindexhead, val, ctxt); val = qib_read_ureg32(dd, ur_rcvhdrtail, ctxt); dd->rcd[ctxt]->head = val; /* If kctxt, interrupt on next receive. */ if (ctxt < dd->first_user_ctxt) val |= dd->rhdrhead_intr_off; qib_write_ureg(dd, ur_rcvhdrhead, val, ctxt); } if (op & QIB_RCVCTRL_CTXT_DIS) { if (ctxt >= 0) { qib_write_kreg_ctxt(dd, kr_rcvhdrtailaddr, ctxt, 0); qib_write_kreg_ctxt(dd, kr_rcvhdraddr, ctxt, 0); } else { unsigned i; for (i = 0; i < dd->cfgctxts; i++) { qib_write_kreg_ctxt(dd, kr_rcvhdrtailaddr, i, 0); qib_write_kreg_ctxt(dd, kr_rcvhdraddr, i, 0); } } } spin_unlock_irqrestore(&dd->cspec->rcvmod_lock, flags); } /* * Modify the SENDCTRL register in chip-specific way. This * is a function there may be multiple such registers with * slightly different layouts. To start, we assume the * "canonical" register layout of the first chips. * Chip requires no back-back sendctrl writes, so write * scratch register after writing sendctrl */ static void sendctrl_7220_mod(struct qib_pportdata *ppd, u32 op) { struct qib_devdata *dd = ppd->dd; u64 tmp_dd_sendctrl; unsigned long flags; spin_lock_irqsave(&dd->sendctrl_lock, flags); /* First the ones that are "sticky", saved in shadow */ if (op & QIB_SENDCTRL_CLEAR) dd->sendctrl = 0; if (op & QIB_SENDCTRL_SEND_DIS) dd->sendctrl &= ~SYM_MASK(SendCtrl, SPioEnable); else if (op & QIB_SENDCTRL_SEND_ENB) { dd->sendctrl |= SYM_MASK(SendCtrl, SPioEnable); if (dd->flags & QIB_USE_SPCL_TRIG) dd->sendctrl |= SYM_MASK(SendCtrl, SSpecialTriggerEn); } if (op & QIB_SENDCTRL_AVAIL_DIS) dd->sendctrl &= ~SYM_MASK(SendCtrl, SendBufAvailUpd); else if (op & QIB_SENDCTRL_AVAIL_ENB) dd->sendctrl |= SYM_MASK(SendCtrl, SendBufAvailUpd); if (op & QIB_SENDCTRL_DISARM_ALL) { u32 i, last; tmp_dd_sendctrl = dd->sendctrl; /* * disarm any that are not yet launched, disabling sends * and updates until done. */ last = dd->piobcnt2k + dd->piobcnt4k; tmp_dd_sendctrl &= ~(SYM_MASK(SendCtrl, SPioEnable) | SYM_MASK(SendCtrl, SendBufAvailUpd)); for (i = 0; i < last; i++) { qib_write_kreg(dd, kr_sendctrl, tmp_dd_sendctrl | SYM_MASK(SendCtrl, Disarm) | i); qib_write_kreg(dd, kr_scratch, 0); } } tmp_dd_sendctrl = dd->sendctrl; if (op & QIB_SENDCTRL_FLUSH) tmp_dd_sendctrl |= SYM_MASK(SendCtrl, Abort); if (op & QIB_SENDCTRL_DISARM) tmp_dd_sendctrl |= SYM_MASK(SendCtrl, Disarm) | ((op & QIB_7220_SendCtrl_DisarmPIOBuf_RMASK) << SYM_LSB(SendCtrl, DisarmPIOBuf)); if ((op & QIB_SENDCTRL_AVAIL_BLIP) && (dd->sendctrl & SYM_MASK(SendCtrl, SendBufAvailUpd))) tmp_dd_sendctrl &= ~SYM_MASK(SendCtrl, SendBufAvailUpd); qib_write_kreg(dd, kr_sendctrl, tmp_dd_sendctrl); qib_write_kreg(dd, kr_scratch, 0); if (op & QIB_SENDCTRL_AVAIL_BLIP) { qib_write_kreg(dd, kr_sendctrl, dd->sendctrl); qib_write_kreg(dd, kr_scratch, 0); } spin_unlock_irqrestore(&dd->sendctrl_lock, flags); if (op & QIB_SENDCTRL_FLUSH) { u32 v; /* * ensure writes have hit chip, then do a few * more reads, to allow DMA of pioavail registers * to occur, so in-memory copy is in sync with * the chip. Not always safe to sleep. */ v = qib_read_kreg32(dd, kr_scratch); qib_write_kreg(dd, kr_scratch, v); v = qib_read_kreg32(dd, kr_scratch); qib_write_kreg(dd, kr_scratch, v); qib_read_kreg32(dd, kr_scratch); } } /** * qib_portcntr_7220 - read a per-port counter * @ppd: the qlogic_ib device * @reg: the counter to snapshot */ static u64 qib_portcntr_7220(struct qib_pportdata *ppd, u32 reg) { u64 ret = 0ULL; struct qib_devdata *dd = ppd->dd; u16 creg; /* 0xffff for unimplemented or synthesized counters */ static const u16 xlator[] = { [QIBPORTCNTR_PKTSEND] = cr_pktsend, [QIBPORTCNTR_WORDSEND] = cr_wordsend, [QIBPORTCNTR_PSXMITDATA] = cr_psxmitdatacount, [QIBPORTCNTR_PSXMITPKTS] = cr_psxmitpktscount, [QIBPORTCNTR_PSXMITWAIT] = cr_psxmitwaitcount, [QIBPORTCNTR_SENDSTALL] = cr_sendstall, [QIBPORTCNTR_PKTRCV] = cr_pktrcv, [QIBPORTCNTR_PSRCVDATA] = cr_psrcvdatacount, [QIBPORTCNTR_PSRCVPKTS] = cr_psrcvpktscount, [QIBPORTCNTR_RCVEBP] = cr_rcvebp, [QIBPORTCNTR_RCVOVFL] = cr_rcvovfl, [QIBPORTCNTR_WORDRCV] = cr_wordrcv, [QIBPORTCNTR_RXDROPPKT] = cr_rxdroppkt, [QIBPORTCNTR_RXLOCALPHYERR] = cr_rxotherlocalphyerr, [QIBPORTCNTR_RXVLERR] = cr_rxvlerr, [QIBPORTCNTR_ERRICRC] = cr_erricrc, [QIBPORTCNTR_ERRVCRC] = cr_errvcrc, [QIBPORTCNTR_ERRLPCRC] = cr_errlpcrc, [QIBPORTCNTR_BADFORMAT] = cr_badformat, [QIBPORTCNTR_ERR_RLEN] = cr_err_rlen, [QIBPORTCNTR_IBSYMBOLERR] = cr_ibsymbolerr, [QIBPORTCNTR_INVALIDRLEN] = cr_invalidrlen, [QIBPORTCNTR_UNSUPVL] = cr_txunsupvl, [QIBPORTCNTR_EXCESSBUFOVFL] = cr_excessbufferovfl, [QIBPORTCNTR_ERRLINK] = cr_errlink, [QIBPORTCNTR_IBLINKDOWN] = cr_iblinkdown, [QIBPORTCNTR_IBLINKERRRECOV] = cr_iblinkerrrecov, [QIBPORTCNTR_LLI] = cr_locallinkintegrityerr, [QIBPORTCNTR_PSINTERVAL] = cr_psinterval, [QIBPORTCNTR_PSSTART] = cr_psstart, [QIBPORTCNTR_PSSTAT] = cr_psstat, [QIBPORTCNTR_VL15PKTDROP] = cr_vl15droppedpkt, [QIBPORTCNTR_ERRPKEY] = cr_errpkey, [QIBPORTCNTR_KHDROVFL] = 0xffff, }; if (reg >= ARRAY_SIZE(xlator)) { qib_devinfo(ppd->dd->pcidev, "Unimplemented portcounter %u\n", reg); goto done; } creg = xlator[reg]; if (reg == QIBPORTCNTR_KHDROVFL) { int i; /* sum over all kernel contexts */ for (i = 0; i < dd->first_user_ctxt; i++) ret += read_7220_creg32(dd, cr_portovfl + i); } if (creg == 0xffff) goto done; /* * only fast incrementing counters are 64bit; use 32 bit reads to * avoid two independent reads when on opteron */ if ((creg == cr_wordsend || creg == cr_wordrcv || creg == cr_pktsend || creg == cr_pktrcv)) ret = read_7220_creg(dd, creg); else ret = read_7220_creg32(dd, creg); if (creg == cr_ibsymbolerr) { if (dd->pport->cpspec->ibdeltainprog) ret -= ret - ppd->cpspec->ibsymsnap; ret -= dd->pport->cpspec->ibsymdelta; } else if (creg == cr_iblinkerrrecov) { if (dd->pport->cpspec->ibdeltainprog) ret -= ret - ppd->cpspec->iblnkerrsnap; ret -= dd->pport->cpspec->iblnkerrdelta; } done: return ret; } /* * Device counter names (not port-specific), one line per stat, * single string. Used by utilities like ipathstats to print the stats * in a way which works for different versions of drivers, without changing * the utility. Names need to be 12 chars or less (w/o newline), for proper * display by utility. * Non-error counters are first. * Start of "error" counters is indicated by a leading "E " on the first * "error" counter, and doesn't count in label length. * The EgrOvfl list needs to be last so we truncate them at the configured * context count for the device. * cntr7220indices contains the corresponding register indices. */ static const char cntr7220names[] = "Interrupts\n" "HostBusStall\n" "E RxTIDFull\n" "RxTIDInvalid\n" "Ctxt0EgrOvfl\n" "Ctxt1EgrOvfl\n" "Ctxt2EgrOvfl\n" "Ctxt3EgrOvfl\n" "Ctxt4EgrOvfl\n" "Ctxt5EgrOvfl\n" "Ctxt6EgrOvfl\n" "Ctxt7EgrOvfl\n" "Ctxt8EgrOvfl\n" "Ctxt9EgrOvfl\n" "Ctx10EgrOvfl\n" "Ctx11EgrOvfl\n" "Ctx12EgrOvfl\n" "Ctx13EgrOvfl\n" "Ctx14EgrOvfl\n" "Ctx15EgrOvfl\n" "Ctx16EgrOvfl\n"; static const size_t cntr7220indices[] = { cr_lbint, cr_lbflowstall, cr_errtidfull, cr_errtidvalid, cr_portovfl + 0, cr_portovfl + 1, cr_portovfl + 2, cr_portovfl + 3, cr_portovfl + 4, cr_portovfl + 5, cr_portovfl + 6, cr_portovfl + 7, cr_portovfl + 8, cr_portovfl + 9, cr_portovfl + 10, cr_portovfl + 11, cr_portovfl + 12, cr_portovfl + 13, cr_portovfl + 14, cr_portovfl + 15, cr_portovfl + 16, }; /* * same as cntr7220names and cntr7220indices, but for port-specific counters. * portcntr7220indices is somewhat complicated by some registers needing * adjustments of various kinds, and those are ORed with _PORT_VIRT_FLAG */ static const char portcntr7220names[] = "TxPkt\n" "TxFlowPkt\n" "TxWords\n" "RxPkt\n" "RxFlowPkt\n" "RxWords\n" "TxFlowStall\n" "TxDmaDesc\n" /* 7220 and 7322-only */ "E RxDlidFltr\n" /* 7220 and 7322-only */ "IBStatusChng\n" "IBLinkDown\n" "IBLnkRecov\n" "IBRxLinkErr\n" "IBSymbolErr\n" "RxLLIErr\n" "RxBadFormat\n" "RxBadLen\n" "RxBufOvrfl\n" "RxEBP\n" "RxFlowCtlErr\n" "RxICRCerr\n" "RxLPCRCerr\n" "RxVCRCerr\n" "RxInvalLen\n" "RxInvalPKey\n" "RxPktDropped\n" "TxBadLength\n" "TxDropped\n" "TxInvalLen\n" "TxUnderrun\n" "TxUnsupVL\n" "RxLclPhyErr\n" /* 7220 and 7322-only */ "RxVL15Drop\n" /* 7220 and 7322-only */ "RxVlErr\n" /* 7220 and 7322-only */ "XcessBufOvfl\n" /* 7220 and 7322-only */ ; #define _PORT_VIRT_FLAG 0x8000 /* "virtual", need adjustments */ static const size_t portcntr7220indices[] = { QIBPORTCNTR_PKTSEND | _PORT_VIRT_FLAG, cr_pktsendflow, QIBPORTCNTR_WORDSEND | _PORT_VIRT_FLAG, QIBPORTCNTR_PKTRCV | _PORT_VIRT_FLAG, cr_pktrcvflowctrl, QIBPORTCNTR_WORDRCV | _PORT_VIRT_FLAG, QIBPORTCNTR_SENDSTALL | _PORT_VIRT_FLAG, cr_txsdmadesc, cr_rxdlidfltr, cr_ibstatuschange, QIBPORTCNTR_IBLINKDOWN | _PORT_VIRT_FLAG, QIBPORTCNTR_IBLINKERRRECOV | _PORT_VIRT_FLAG, QIBPORTCNTR_ERRLINK | _PORT_VIRT_FLAG, QIBPORTCNTR_IBSYMBOLERR | _PORT_VIRT_FLAG, QIBPORTCNTR_LLI | _PORT_VIRT_FLAG, QIBPORTCNTR_BADFORMAT | _PORT_VIRT_FLAG, QIBPORTCNTR_ERR_RLEN | _PORT_VIRT_FLAG, QIBPORTCNTR_RCVOVFL | _PORT_VIRT_FLAG, QIBPORTCNTR_RCVEBP | _PORT_VIRT_FLAG, cr_rcvflowctrl_err, QIBPORTCNTR_ERRICRC | _PORT_VIRT_FLAG, QIBPORTCNTR_ERRLPCRC | _PORT_VIRT_FLAG, QIBPORTCNTR_ERRVCRC | _PORT_VIRT_FLAG, QIBPORTCNTR_INVALIDRLEN | _PORT_VIRT_FLAG, QIBPORTCNTR_ERRPKEY | _PORT_VIRT_FLAG, QIBPORTCNTR_RXDROPPKT | _PORT_VIRT_FLAG, cr_invalidslen, cr_senddropped, cr_errslen, cr_sendunderrun, cr_txunsupvl, QIBPORTCNTR_RXLOCALPHYERR | _PORT_VIRT_FLAG, QIBPORTCNTR_VL15PKTDROP | _PORT_VIRT_FLAG, QIBPORTCNTR_RXVLERR | _PORT_VIRT_FLAG, QIBPORTCNTR_EXCESSBUFOVFL | _PORT_VIRT_FLAG, }; /* do all the setup to make the counter reads efficient later */ static void init_7220_cntrnames(struct qib_devdata *dd) { int i, j = 0; char *s; for (i = 0, s = (char *)cntr7220names; s && j <= dd->cfgctxts; i++) { /* we always have at least one counter before the egrovfl */ if (!j && !strncmp("Ctxt0EgrOvfl", s + 1, 12)) j = 1; s = strchr(s + 1, '\n'); if (s && j) j++; } dd->cspec->ncntrs = i; if (!s) /* full list; size is without terminating null */ dd->cspec->cntrnamelen = sizeof(cntr7220names) - 1; else dd->cspec->cntrnamelen = 1 + s - cntr7220names; dd->cspec->cntrs = kmalloc_array(dd->cspec->ncntrs, sizeof(u64), GFP_KERNEL); for (i = 0, s = (char *)portcntr7220names; s; i++) s = strchr(s + 1, '\n'); dd->cspec->nportcntrs = i - 1; dd->cspec->portcntrnamelen = sizeof(portcntr7220names) - 1; dd->cspec->portcntrs = kmalloc_array(dd->cspec->nportcntrs, sizeof(u64), GFP_KERNEL); } static u32 qib_read_7220cntrs(struct qib_devdata *dd, loff_t pos, char **namep, u64 **cntrp) { u32 ret; if (!dd->cspec->cntrs) { ret = 0; goto done; } if (namep) { *namep = (char *)cntr7220names; ret = dd->cspec->cntrnamelen; if (pos >= ret) ret = 0; /* final read after getting everything */ } else { u64 *cntr = dd->cspec->cntrs; int i; ret = dd->cspec->ncntrs * sizeof(u64); if (!cntr || pos >= ret) { /* everything read, or couldn't get memory */ ret = 0; goto done; } *cntrp = cntr; for (i = 0; i < dd->cspec->ncntrs; i++) *cntr++ = read_7220_creg32(dd, cntr7220indices[i]); } done: return ret; } static u32 qib_read_7220portcntrs(struct qib_devdata *dd, loff_t pos, u32 port, char **namep, u64 **cntrp) { u32 ret; if (!dd->cspec->portcntrs) { ret = 0; goto done; } if (namep) { *namep = (char *)portcntr7220names; ret = dd->cspec->portcntrnamelen; if (pos >= ret) ret = 0; /* final read after getting everything */ } else { u64 *cntr = dd->cspec->portcntrs; struct qib_pportdata *ppd = &dd->pport[port]; int i; ret = dd->cspec->nportcntrs * sizeof(u64); if (!cntr || pos >= ret) { /* everything read, or couldn't get memory */ ret = 0; goto done; } *cntrp = cntr; for (i = 0; i < dd->cspec->nportcntrs; i++) { if (portcntr7220indices[i] & _PORT_VIRT_FLAG) *cntr++ = qib_portcntr_7220(ppd, portcntr7220indices[i] & ~_PORT_VIRT_FLAG); else *cntr++ = read_7220_creg32(dd, portcntr7220indices[i]); } } done: return ret; } /** * qib_get_7220_faststats - get word counters from chip before they overflow * @t: contains a pointer to the qlogic_ib device qib_devdata * * This needs more work; in particular, decision on whether we really * need traffic_wds done the way it is * called from add_timer */ static void qib_get_7220_faststats(struct timer_list *t) { struct qib_devdata *dd = from_timer(dd, t, stats_timer); struct qib_pportdata *ppd = dd->pport; unsigned long flags; u64 traffic_wds; /* * don't access the chip while running diags, or memory diags can * fail */ if (!(dd->flags & QIB_INITTED) || dd->diag_client) /* but re-arm the timer, for diags case; won't hurt other */ goto done; /* * We now try to maintain an activity timer, based on traffic * exceeding a threshold, so we need to check the word-counts * even if they are 64-bit. */ traffic_wds = qib_portcntr_7220(ppd, cr_wordsend) + qib_portcntr_7220(ppd, cr_wordrcv); spin_lock_irqsave(&dd->eep_st_lock, flags); traffic_wds -= dd->traffic_wds; dd->traffic_wds += traffic_wds; spin_unlock_irqrestore(&dd->eep_st_lock, flags); done: mod_timer(&dd->stats_timer, jiffies + HZ * ACTIVITY_TIMER); } /* * If we are using MSI, try to fallback to INTx. */ static int qib_7220_intr_fallback(struct qib_devdata *dd) { if (!dd->msi_lo) return 0; qib_devinfo(dd->pcidev, "MSI interrupt not detected, trying INTx interrupts\n"); qib_free_irq(dd); dd->msi_lo = 0; if (pci_alloc_irq_vectors(dd->pcidev, 1, 1, PCI_IRQ_LEGACY) < 0) qib_dev_err(dd, "Failed to enable INTx\n"); qib_setup_7220_interrupt(dd); return 1; } /* * Reset the XGXS (between serdes and IBC). Slightly less intrusive * than resetting the IBC or external link state, and useful in some * cases to cause some retraining. To do this right, we reset IBC * as well. */ static void qib_7220_xgxs_reset(struct qib_pportdata *ppd) { u64 val, prev_val; struct qib_devdata *dd = ppd->dd; prev_val = qib_read_kreg64(dd, kr_xgxs_cfg); val = prev_val | QLOGIC_IB_XGXS_RESET; prev_val &= ~QLOGIC_IB_XGXS_RESET; /* be sure */ qib_write_kreg(dd, kr_control, dd->control & ~QLOGIC_IB_C_LINKENABLE); qib_write_kreg(dd, kr_xgxs_cfg, val); qib_read_kreg32(dd, kr_scratch); qib_write_kreg(dd, kr_xgxs_cfg, prev_val); qib_write_kreg(dd, kr_control, dd->control); } /* * For this chip, we want to use the same buffer every time * when we are trying to bring the link up (they are always VL15 * packets). At that link state the packet should always go out immediately * (or at least be discarded at the tx interface if the link is down). * If it doesn't, and the buffer isn't available, that means some other * sender has gotten ahead of us, and is preventing our packet from going * out. In that case, we flush all packets, and try again. If that still * fails, we fail the request, and hope things work the next time around. * * We don't need very complicated heuristics on whether the packet had * time to go out or not, since even at SDR 1X, it goes out in very short * time periods, covered by the chip reads done here and as part of the * flush. */ static u32 __iomem *get_7220_link_buf(struct qib_pportdata *ppd, u32 *bnum) { u32 __iomem *buf; u32 lbuf = ppd->dd->cspec->lastbuf_for_pio; int do_cleanup; unsigned long flags; /* * always blip to get avail list updated, since it's almost * always needed, and is fairly cheap. */ sendctrl_7220_mod(ppd->dd->pport, QIB_SENDCTRL_AVAIL_BLIP); qib_read_kreg64(ppd->dd, kr_scratch); /* extra chip flush */ buf = qib_getsendbuf_range(ppd->dd, bnum, lbuf, lbuf); if (buf) goto done; spin_lock_irqsave(&ppd->sdma_lock, flags); if (ppd->sdma_state.current_state == qib_sdma_state_s20_idle && ppd->sdma_state.current_state != qib_sdma_state_s00_hw_down) { __qib_sdma_process_event(ppd, qib_sdma_event_e00_go_hw_down); do_cleanup = 0; } else { do_cleanup = 1; qib_7220_sdma_hw_clean_up(ppd); } spin_unlock_irqrestore(&ppd->sdma_lock, flags); if (do_cleanup) { qib_read_kreg64(ppd->dd, kr_scratch); /* extra chip flush */ buf = qib_getsendbuf_range(ppd->dd, bnum, lbuf, lbuf); } done: return buf; } /* * This code for non-IBTA-compliant IB speed negotiation is only known to * work for the SDR to DDR transition, and only between an HCA and a switch * with recent firmware. It is based on observed heuristics, rather than * actual knowledge of the non-compliant speed negotiation. * It has a number of hard-coded fields, since the hope is to rewrite this * when a spec is available on how the negoation is intended to work. */ static void autoneg_7220_sendpkt(struct qib_pportdata *ppd, u32 *hdr, u32 dcnt, u32 *data) { int i; u64 pbc; u32 __iomem *piobuf; u32 pnum; struct qib_devdata *dd = ppd->dd; i = 0; pbc = 7 + dcnt + 1; /* 7 dword header, dword data, icrc */ pbc |= PBC_7220_VL15_SEND; while (!(piobuf = get_7220_link_buf(ppd, &pnum))) { if (i++ > 5) return; udelay(2); } sendctrl_7220_mod(dd->pport, QIB_SENDCTRL_DISARM_BUF(pnum)); writeq(pbc, piobuf); qib_flush_wc(); qib_pio_copy(piobuf + 2, hdr, 7); qib_pio_copy(piobuf + 9, data, dcnt); if (dd->flags & QIB_USE_SPCL_TRIG) { u32 spcl_off = (pnum >= dd->piobcnt2k) ? 2047 : 1023; qib_flush_wc(); __raw_writel(0xaebecede, piobuf + spcl_off); } qib_flush_wc(); qib_sendbuf_done(dd, pnum); } /* * _start packet gets sent twice at start, _done gets sent twice at end */ static void autoneg_7220_send(struct qib_pportdata *ppd, int which) { struct qib_devdata *dd = ppd->dd; static u32 swapped; u32 dw, i, hcnt, dcnt, *data; static u32 hdr[7] = { 0xf002ffff, 0x48ffff, 0x6400abba }; static u32 madpayload_start[0x40] = { 0x1810103, 0x1, 0x0, 0x0, 0x2c90000, 0x2c9, 0x0, 0x0, 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1388, 0x15e, 0x1, /* rest 0's */ }; static u32 madpayload_done[0x40] = { 0x1810103, 0x1, 0x0, 0x0, 0x2c90000, 0x2c9, 0x0, 0x0, 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x40000001, 0x1388, 0x15e, /* rest 0's */ }; dcnt = ARRAY_SIZE(madpayload_start); hcnt = ARRAY_SIZE(hdr); if (!swapped) { /* for maintainability, do it at runtime */ for (i = 0; i < hcnt; i++) { dw = (__force u32) cpu_to_be32(hdr[i]); hdr[i] = dw; } for (i = 0; i < dcnt; i++) { dw = (__force u32) cpu_to_be32(madpayload_start[i]); madpayload_start[i] = dw; dw = (__force u32) cpu_to_be32(madpayload_done[i]); madpayload_done[i] = dw; } swapped = 1; } data = which ? madpayload_done : madpayload_start; autoneg_7220_sendpkt(ppd, hdr, dcnt, data); qib_read_kreg64(dd, kr_scratch); udelay(2); autoneg_7220_sendpkt(ppd, hdr, dcnt, data); qib_read_kreg64(dd, kr_scratch); udelay(2); } /* * Do the absolute minimum to cause an IB speed change, and make it * ready, but don't actually trigger the change. The caller will * do that when ready (if link is in Polling training state, it will * happen immediately, otherwise when link next goes down) * * This routine should only be used as part of the DDR autonegotation * code for devices that are not compliant with IB 1.2 (or code that * fixes things up for same). * * When link has gone down, and autoneg enabled, or autoneg has * failed and we give up until next time we set both speeds, and * then we want IBTA enabled as well as "use max enabled speed. */ static void set_7220_ibspeed_fast(struct qib_pportdata *ppd, u32 speed) { ppd->cpspec->ibcddrctrl &= ~(IBA7220_IBC_SPEED_AUTONEG_MASK | IBA7220_IBC_IBTA_1_2_MASK); if (speed == (QIB_IB_SDR | QIB_IB_DDR)) ppd->cpspec->ibcddrctrl |= IBA7220_IBC_SPEED_AUTONEG_MASK | IBA7220_IBC_IBTA_1_2_MASK; else ppd->cpspec->ibcddrctrl |= speed == QIB_IB_DDR ? IBA7220_IBC_SPEED_DDR : IBA7220_IBC_SPEED_SDR; qib_write_kreg(ppd->dd, kr_ibcddrctrl, ppd->cpspec->ibcddrctrl); qib_write_kreg(ppd->dd, kr_scratch, 0); } /* * This routine is only used when we are not talking to another * IB 1.2-compliant device that we think can do DDR. * (This includes all existing switch chips as of Oct 2007.) * 1.2-compliant devices go directly to DDR prior to reaching INIT */ static void try_7220_autoneg(struct qib_pportdata *ppd) { unsigned long flags; /* * Required for older non-IB1.2 DDR switches. Newer * non-IB-compliant switches don't need it, but so far, * aren't bothered by it either. "Magic constant" */ qib_write_kreg(ppd->dd, kr_ncmodectrl, 0x3b9dc07); spin_lock_irqsave(&ppd->lflags_lock, flags); ppd->lflags |= QIBL_IB_AUTONEG_INPROG; spin_unlock_irqrestore(&ppd->lflags_lock, flags); autoneg_7220_send(ppd, 0); set_7220_ibspeed_fast(ppd, QIB_IB_DDR); toggle_7220_rclkrls(ppd->dd); /* 2 msec is minimum length of a poll cycle */ queue_delayed_work(ib_wq, &ppd->cpspec->autoneg_work, msecs_to_jiffies(2)); } /* * Handle the empirically determined mechanism for auto-negotiation * of DDR speed with switches. */ static void autoneg_7220_work(struct work_struct *work) { struct qib_pportdata *ppd; struct qib_devdata *dd; u32 i; unsigned long flags; ppd = &container_of(work, struct qib_chippport_specific, autoneg_work.work)->pportdata; dd = ppd->dd; /* * Busy wait for this first part, it should be at most a * few hundred usec, since we scheduled ourselves for 2msec. */ for (i = 0; i < 25; i++) { if (SYM_FIELD(ppd->lastibcstat, IBCStatus, LinkTrainingState) == IB_7220_LT_STATE_POLLQUIET) { qib_set_linkstate(ppd, QIB_IB_LINKDOWN_DISABLE); break; } udelay(100); } if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) goto done; /* we got there early or told to stop */ /* we expect this to timeout */ if (wait_event_timeout(ppd->cpspec->autoneg_wait, !(ppd->lflags & QIBL_IB_AUTONEG_INPROG), msecs_to_jiffies(90))) goto done; toggle_7220_rclkrls(dd); /* we expect this to timeout */ if (wait_event_timeout(ppd->cpspec->autoneg_wait, !(ppd->lflags & QIBL_IB_AUTONEG_INPROG), msecs_to_jiffies(1700))) goto done; set_7220_ibspeed_fast(ppd, QIB_IB_SDR); toggle_7220_rclkrls(dd); /* * Wait up to 250 msec for link to train and get to INIT at DDR; * this should terminate early. */ wait_event_timeout(ppd->cpspec->autoneg_wait, !(ppd->lflags & QIBL_IB_AUTONEG_INPROG), msecs_to_jiffies(250)); done: if (ppd->lflags & QIBL_IB_AUTONEG_INPROG) { spin_lock_irqsave(&ppd->lflags_lock, flags); ppd->lflags &= ~QIBL_IB_AUTONEG_INPROG; if (dd->cspec->autoneg_tries == AUTONEG_TRIES) { ppd->lflags |= QIBL_IB_AUTONEG_FAILED; dd->cspec->autoneg_tries = 0; } spin_unlock_irqrestore(&ppd->lflags_lock, flags); set_7220_ibspeed_fast(ppd, ppd->link_speed_enabled); } } static u32 qib_7220_iblink_state(u64 ibcs) { u32 state = (u32)SYM_FIELD(ibcs, IBCStatus, LinkState); switch (state) { case IB_7220_L_STATE_INIT: state = IB_PORT_INIT; break; case IB_7220_L_STATE_ARM: state = IB_PORT_ARMED; break; case IB_7220_L_STATE_ACTIVE: case IB_7220_L_STATE_ACT_DEFER: state = IB_PORT_ACTIVE; break; default: fallthrough; case IB_7220_L_STATE_DOWN: state = IB_PORT_DOWN; break; } return state; } /* returns the IBTA port state, rather than the IBC link training state */ static u8 qib_7220_phys_portstate(u64 ibcs) { u8 state = (u8)SYM_FIELD(ibcs, IBCStatus, LinkTrainingState); return qib_7220_physportstate[state]; } static int qib_7220_ib_updown(struct qib_pportdata *ppd, int ibup, u64 ibcs) { int ret = 0, symadj = 0; struct qib_devdata *dd = ppd->dd; unsigned long flags; spin_lock_irqsave(&ppd->lflags_lock, flags); ppd->lflags &= ~QIBL_IB_FORCE_NOTIFY; spin_unlock_irqrestore(&ppd->lflags_lock, flags); if (!ibup) { /* * When the link goes down we don't want AEQ running, so it * won't interfere with IBC training, etc., and we need * to go back to the static SerDes preset values. */ if (!(ppd->lflags & (QIBL_IB_AUTONEG_FAILED | QIBL_IB_AUTONEG_INPROG))) set_7220_ibspeed_fast(ppd, ppd->link_speed_enabled); if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) { qib_sd7220_presets(dd); qib_cancel_sends(ppd); /* initial disarm, etc. */ spin_lock_irqsave(&ppd->sdma_lock, flags); if (__qib_sdma_running(ppd)) __qib_sdma_process_event(ppd, qib_sdma_event_e70_go_idle); spin_unlock_irqrestore(&ppd->sdma_lock, flags); } /* this might better in qib_sd7220_presets() */ set_7220_relock_poll(dd, ibup); } else { if (qib_compat_ddr_negotiate && !(ppd->lflags & (QIBL_IB_AUTONEG_FAILED | QIBL_IB_AUTONEG_INPROG)) && ppd->link_speed_active == QIB_IB_SDR && (ppd->link_speed_enabled & (QIB_IB_DDR | QIB_IB_SDR)) == (QIB_IB_DDR | QIB_IB_SDR) && dd->cspec->autoneg_tries < AUTONEG_TRIES) { /* we are SDR, and DDR auto-negotiation enabled */ ++dd->cspec->autoneg_tries; if (!ppd->cpspec->ibdeltainprog) { ppd->cpspec->ibdeltainprog = 1; ppd->cpspec->ibsymsnap = read_7220_creg32(dd, cr_ibsymbolerr); ppd->cpspec->iblnkerrsnap = read_7220_creg32(dd, cr_iblinkerrrecov); } try_7220_autoneg(ppd); ret = 1; /* no other IB status change processing */ } else if ((ppd->lflags & QIBL_IB_AUTONEG_INPROG) && ppd->link_speed_active == QIB_IB_SDR) { autoneg_7220_send(ppd, 1); set_7220_ibspeed_fast(ppd, QIB_IB_DDR); udelay(2); toggle_7220_rclkrls(dd); ret = 1; /* no other IB status change processing */ } else { if ((ppd->lflags & QIBL_IB_AUTONEG_INPROG) && (ppd->link_speed_active & QIB_IB_DDR)) { spin_lock_irqsave(&ppd->lflags_lock, flags); ppd->lflags &= ~(QIBL_IB_AUTONEG_INPROG | QIBL_IB_AUTONEG_FAILED); spin_unlock_irqrestore(&ppd->lflags_lock, flags); dd->cspec->autoneg_tries = 0; /* re-enable SDR, for next link down */ set_7220_ibspeed_fast(ppd, ppd->link_speed_enabled); wake_up(&ppd->cpspec->autoneg_wait); symadj = 1; } else if (ppd->lflags & QIBL_IB_AUTONEG_FAILED) { /* * Clear autoneg failure flag, and do setup * so we'll try next time link goes down and * back to INIT (possibly connected to a * different device). */ spin_lock_irqsave(&ppd->lflags_lock, flags); ppd->lflags &= ~QIBL_IB_AUTONEG_FAILED; spin_unlock_irqrestore(&ppd->lflags_lock, flags); ppd->cpspec->ibcddrctrl |= IBA7220_IBC_IBTA_1_2_MASK; qib_write_kreg(dd, kr_ncmodectrl, 0); symadj = 1; } } if (!(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) symadj = 1; if (!ret) { ppd->delay_mult = rate_to_delay [(ibcs >> IBA7220_LINKSPEED_SHIFT) & 1] [(ibcs >> IBA7220_LINKWIDTH_SHIFT) & 1]; set_7220_relock_poll(dd, ibup); spin_lock_irqsave(&ppd->sdma_lock, flags); /* * Unlike 7322, the 7220 needs this, due to lack of * interrupt in some cases when we have sdma active * when the link goes down. */ if (ppd->sdma_state.current_state != qib_sdma_state_s20_idle) __qib_sdma_process_event(ppd, qib_sdma_event_e00_go_hw_down); spin_unlock_irqrestore(&ppd->sdma_lock, flags); } } if (symadj) { if (ppd->cpspec->ibdeltainprog) { ppd->cpspec->ibdeltainprog = 0; ppd->cpspec->ibsymdelta += read_7220_creg32(ppd->dd, cr_ibsymbolerr) - ppd->cpspec->ibsymsnap; ppd->cpspec->iblnkerrdelta += read_7220_creg32(ppd->dd, cr_iblinkerrrecov) - ppd->cpspec->iblnkerrsnap; } } else if (!ibup && qib_compat_ddr_negotiate && !ppd->cpspec->ibdeltainprog && !(ppd->lflags & QIBL_IB_AUTONEG_INPROG)) { ppd->cpspec->ibdeltainprog = 1; ppd->cpspec->ibsymsnap = read_7220_creg32(ppd->dd, cr_ibsymbolerr); ppd->cpspec->iblnkerrsnap = read_7220_creg32(ppd->dd, cr_iblinkerrrecov); } if (!ret) qib_setup_7220_setextled(ppd, ibup); return ret; } /* * Does read/modify/write to appropriate registers to * set output and direction bits selected by mask. * these are in their canonical positions (e.g. lsb of * dir will end up in D48 of extctrl on existing chips). * returns contents of GP Inputs. */ static int gpio_7220_mod(struct qib_devdata *dd, u32 out, u32 dir, u32 mask) { u64 read_val, new_out; unsigned long flags; if (mask) { /* some bits being written, lock access to GPIO */ dir &= mask; out &= mask; spin_lock_irqsave(&dd->cspec->gpio_lock, flags); dd->cspec->extctrl &= ~((u64)mask << SYM_LSB(EXTCtrl, GPIOOe)); dd->cspec->extctrl |= ((u64) dir << SYM_LSB(EXTCtrl, GPIOOe)); new_out = (dd->cspec->gpio_out & ~mask) | out; qib_write_kreg(dd, kr_extctrl, dd->cspec->extctrl); qib_write_kreg(dd, kr_gpio_out, new_out); dd->cspec->gpio_out = new_out; spin_unlock_irqrestore(&dd->cspec->gpio_lock, flags); } /* * It is unlikely that a read at this time would get valid * data on a pin whose direction line was set in the same * call to this function. We include the read here because * that allows us to potentially combine a change on one pin with * a read on another, and because the old code did something like * this. */ read_val = qib_read_kreg64(dd, kr_extstatus); return SYM_FIELD(read_val, EXTStatus, GPIOIn); } /* * Read fundamental info we need to use the chip. These are * the registers that describe chip capabilities, and are * saved in shadow registers. */ static void get_7220_chip_params(struct qib_devdata *dd) { u64 val; u32 piobufs; int mtu; dd->uregbase = qib_read_kreg32(dd, kr_userregbase); dd->rcvtidcnt = qib_read_kreg32(dd, kr_rcvtidcnt); dd->rcvtidbase = qib_read_kreg32(dd, kr_rcvtidbase); dd->rcvegrbase = qib_read_kreg32(dd, kr_rcvegrbase); dd->palign = qib_read_kreg32(dd, kr_palign); dd->piobufbase = qib_read_kreg64(dd, kr_sendpiobufbase); dd->pio2k_bufbase = dd->piobufbase & 0xffffffff; val = qib_read_kreg64(dd, kr_sendpiosize); dd->piosize2k = val & ~0U; dd->piosize4k = val >> 32; mtu = ib_mtu_enum_to_int(qib_ibmtu); if (mtu == -1) mtu = QIB_DEFAULT_MTU; dd->pport->ibmtu = (u32)mtu; val = qib_read_kreg64(dd, kr_sendpiobufcnt); dd->piobcnt2k = val & ~0U; dd->piobcnt4k = val >> 32; /* these may be adjusted in init_chip_wc_pat() */ dd->pio2kbase = (u32 __iomem *) ((char __iomem *) dd->kregbase + dd->pio2k_bufbase); if (dd->piobcnt4k) { dd->pio4kbase = (u32 __iomem *) ((char __iomem *) dd->kregbase + (dd->piobufbase >> 32)); /* * 4K buffers take 2 pages; we use roundup just to be * paranoid; we calculate it once here, rather than on * ever buf allocate */ dd->align4k = ALIGN(dd->piosize4k, dd->palign); } piobufs = dd->piobcnt4k + dd->piobcnt2k; dd->pioavregs = ALIGN(piobufs, sizeof(u64) * BITS_PER_BYTE / 2) / (sizeof(u64) * BITS_PER_BYTE / 2); } /* * The chip base addresses in cspec and cpspec have to be set * after possible init_chip_wc_pat(), rather than in * qib_get_7220_chip_params(), so split out as separate function */ static void set_7220_baseaddrs(struct qib_devdata *dd) { u32 cregbase; /* init after possible re-map in init_chip_wc_pat() */ cregbase = qib_read_kreg32(dd, kr_counterregbase); dd->cspec->cregbase = (u64 __iomem *) ((char __iomem *) dd->kregbase + cregbase); dd->egrtidbase = (u64 __iomem *) ((char __iomem *) dd->kregbase + dd->rcvegrbase); } #define SENDCTRL_SHADOWED (SYM_MASK(SendCtrl, SendIntBufAvail) | \ SYM_MASK(SendCtrl, SPioEnable) | \ SYM_MASK(SendCtrl, SSpecialTriggerEn) | \ SYM_MASK(SendCtrl, SendBufAvailUpd) | \ SYM_MASK(SendCtrl, AvailUpdThld) | \ SYM_MASK(SendCtrl, SDmaEnable) | \ SYM_MASK(SendCtrl, SDmaIntEnable) | \ SYM_MASK(SendCtrl, SDmaHalt) | \ SYM_MASK(SendCtrl, SDmaSingleDescriptor)) static int sendctrl_hook(struct qib_devdata *dd, const struct diag_observer *op, u32 offs, u64 *data, u64 mask, int only_32) { unsigned long flags; unsigned idx = offs / sizeof(u64); u64 local_data, all_bits; if (idx != kr_sendctrl) { qib_dev_err(dd, "SendCtrl Hook called with offs %X, %s-bit\n", offs, only_32 ? "32" : "64"); return 0; } all_bits = ~0ULL; if (only_32) all_bits >>= 32; spin_lock_irqsave(&dd->sendctrl_lock, flags); if ((mask & all_bits) != all_bits) { /* * At least some mask bits are zero, so we need * to read. The judgement call is whether from * reg or shadow. First-cut: read reg, and complain * if any bits which should be shadowed are different * from their shadowed value. */ if (only_32) local_data = (u64)qib_read_kreg32(dd, idx); else local_data = qib_read_kreg64(dd, idx); qib_dev_err(dd, "Sendctrl -> %X, Shad -> %X\n", (u32)local_data, (u32)dd->sendctrl); if ((local_data & SENDCTRL_SHADOWED) != (dd->sendctrl & SENDCTRL_SHADOWED)) qib_dev_err(dd, "Sendctrl read: %X shadow is %X\n", (u32)local_data, (u32) dd->sendctrl); *data = (local_data & ~mask) | (*data & mask); } if (mask) { /* * At least some mask bits are one, so we need * to write, but only shadow some bits. */ u64 sval, tval; /* Shadowed, transient */ /* * New shadow val is bits we don't want to touch, * ORed with bits we do, that are intended for shadow. */ sval = (dd->sendctrl & ~mask); sval |= *data & SENDCTRL_SHADOWED & mask; dd->sendctrl = sval; tval = sval | (*data & ~SENDCTRL_SHADOWED & mask); qib_dev_err(dd, "Sendctrl <- %X, Shad <- %X\n", (u32)tval, (u32)sval); qib_write_kreg(dd, kr_sendctrl, tval); qib_write_kreg(dd, kr_scratch, 0Ull); } spin_unlock_irqrestore(&dd->sendctrl_lock, flags); return only_32 ? 4 : 8; } static const struct diag_observer sendctrl_observer = { sendctrl_hook, kr_sendctrl * sizeof(u64), kr_sendctrl * sizeof(u64) }; /* * write the final few registers that depend on some of the * init setup. Done late in init, just before bringing up * the serdes. */ static int qib_late_7220_initreg(struct qib_devdata *dd) { int ret = 0; u64 val; qib_write_kreg(dd, kr_rcvhdrentsize, dd->rcvhdrentsize); qib_write_kreg(dd, kr_rcvhdrsize, dd->rcvhdrsize); qib_write_kreg(dd, kr_rcvhdrcnt, dd->rcvhdrcnt); qib_write_kreg(dd, kr_sendpioavailaddr, dd->pioavailregs_phys); val = qib_read_kreg64(dd, kr_sendpioavailaddr); if (val != dd->pioavailregs_phys) { qib_dev_err(dd, "Catastrophic software error, SendPIOAvailAddr written as %lx, read back as %llx\n", (unsigned long) dd->pioavailregs_phys, (unsigned long long) val); ret = -EINVAL; } qib_register_observer(dd, &sendctrl_observer); return ret; } static int qib_init_7220_variables(struct qib_devdata *dd) { struct qib_chippport_specific *cpspec; struct qib_pportdata *ppd; int ret = 0; u32 sbufs, updthresh; cpspec = (struct qib_chippport_specific *)(dd + 1); ppd = &cpspec->pportdata; dd->pport = ppd; dd->num_pports = 1; dd->cspec = (struct qib_chip_specific *)(cpspec + dd->num_pports); dd->cspec->dd = dd; ppd->cpspec = cpspec; spin_lock_init(&dd->cspec->sdepb_lock); spin_lock_init(&dd->cspec->rcvmod_lock); spin_lock_init(&dd->cspec->gpio_lock); /* we haven't yet set QIB_PRESENT, so use read directly */ dd->revision = readq(&dd->kregbase[kr_revision]); if ((dd->revision & 0xffffffffU) == 0xffffffffU) { qib_dev_err(dd, "Revision register read failure, giving up initialization\n"); ret = -ENODEV; goto bail; } dd->flags |= QIB_PRESENT; /* now register routines work */ dd->majrev = (u8) SYM_FIELD(dd->revision, Revision_R, ChipRevMajor); dd->minrev = (u8) SYM_FIELD(dd->revision, Revision_R, ChipRevMinor); get_7220_chip_params(dd); qib_7220_boardname(dd); /* * GPIO bits for TWSI data and clock, * used for serial EEPROM. */ dd->gpio_sda_num = _QIB_GPIO_SDA_NUM; dd->gpio_scl_num = _QIB_GPIO_SCL_NUM; dd->twsi_eeprom_dev = QIB_TWSI_EEPROM_DEV; dd->flags |= QIB_HAS_INTX | QIB_HAS_LINK_LATENCY | QIB_NODMA_RTAIL | QIB_HAS_THRESH_UPDATE; dd->flags |= qib_special_trigger ? QIB_USE_SPCL_TRIG : QIB_HAS_SEND_DMA; init_waitqueue_head(&cpspec->autoneg_wait); INIT_DELAYED_WORK(&cpspec->autoneg_work, autoneg_7220_work); ret = qib_init_pportdata(ppd, dd, 0, 1); if (ret) goto bail; ppd->link_width_supported = IB_WIDTH_1X | IB_WIDTH_4X; ppd->link_speed_supported = QIB_IB_SDR | QIB_IB_DDR; ppd->link_width_enabled = ppd->link_width_supported; ppd->link_speed_enabled = ppd->link_speed_supported; /* * Set the initial values to reasonable default, will be set * for real when link is up. */ ppd->link_width_active = IB_WIDTH_4X; ppd->link_speed_active = QIB_IB_SDR; ppd->delay_mult = rate_to_delay[0][1]; ppd->vls_supported = IB_VL_VL0; ppd->vls_operational = ppd->vls_supported; if (!qib_mini_init) qib_write_kreg(dd, kr_rcvbthqp, QIB_KD_QP); timer_setup(&ppd->cpspec->chase_timer, reenable_7220_chase, 0); qib_num_cfg_vls = 1; /* if any 7220's, only one VL */ dd->rcvhdrentsize = QIB_RCVHDR_ENTSIZE; dd->rcvhdrsize = QIB_DFLT_RCVHDRSIZE; dd->rhf_offset = dd->rcvhdrentsize - sizeof(u64) / sizeof(u32); /* we always allocate at least 2048 bytes for eager buffers */ ret = ib_mtu_enum_to_int(qib_ibmtu); dd->rcvegrbufsize = ret != -1 ? max(ret, 2048) : QIB_DEFAULT_MTU; dd->rcvegrbufsize_shift = ilog2(dd->rcvegrbufsize); qib_7220_tidtemplate(dd); /* * We can request a receive interrupt for 1 or * more packets from current offset. For now, we set this * up for a single packet. */ dd->rhdrhead_intr_off = 1ULL << 32; /* setup the stats timer; the add_timer is done at end of init */ timer_setup(&dd->stats_timer, qib_get_7220_faststats, 0); dd->stats_timer.expires = jiffies + ACTIVITY_TIMER * HZ; /* * Control[4] has been added to change the arbitration within * the SDMA engine between favoring data fetches over descriptor * fetches. qib_sdma_fetch_arb==0 gives data fetches priority. */ if (qib_sdma_fetch_arb) dd->control |= 1 << 4; dd->ureg_align = 0x10000; /* 64KB alignment */ dd->piosize2kmax_dwords = (dd->piosize2k >> 2)-1; qib_7220_config_ctxts(dd); qib_set_ctxtcnt(dd); /* needed for PAT setup */ ret = init_chip_wc_pat(dd, 0); if (ret) goto bail; set_7220_baseaddrs(dd); /* set chip access pointers now */ ret = 0; if (qib_mini_init) goto bail; ret = qib_create_ctxts(dd); init_7220_cntrnames(dd); /* use all of 4KB buffers for the kernel SDMA, zero if !SDMA. * reserve the update threshold amount for other kernel use, such * as sending SMI, MAD, and ACKs, or 3, whichever is greater, * unless we aren't enabling SDMA, in which case we want to use * all the 4k bufs for the kernel. * if this was less than the update threshold, we could wait * a long time for an update. Coded this way because we * sometimes change the update threshold for various reasons, * and we want this to remain robust. */ updthresh = 8U; /* update threshold */ if (dd->flags & QIB_HAS_SEND_DMA) { dd->cspec->sdmabufcnt = dd->piobcnt4k; sbufs = updthresh > 3 ? updthresh : 3; } else { dd->cspec->sdmabufcnt = 0; sbufs = dd->piobcnt4k; } dd->cspec->lastbuf_for_pio = dd->piobcnt2k + dd->piobcnt4k - dd->cspec->sdmabufcnt; dd->lastctxt_piobuf = dd->cspec->lastbuf_for_pio - sbufs; dd->cspec->lastbuf_for_pio--; /* range is <= , not < */ dd->last_pio = dd->cspec->lastbuf_for_pio; dd->pbufsctxt = dd->lastctxt_piobuf / (dd->cfgctxts - dd->first_user_ctxt); /* * if we are at 16 user contexts, we will have one 7 sbufs * per context, so drop the update threshold to match. We * want to update before we actually run out, at low pbufs/ctxt * so give ourselves some margin */ if ((dd->pbufsctxt - 2) < updthresh) updthresh = dd->pbufsctxt - 2; dd->cspec->updthresh_dflt = updthresh; dd->cspec->updthresh = updthresh; /* before full enable, no interrupts, no locking needed */ dd->sendctrl |= (updthresh & SYM_RMASK(SendCtrl, AvailUpdThld)) << SYM_LSB(SendCtrl, AvailUpdThld); dd->psxmitwait_supported = 1; dd->psxmitwait_check_rate = QIB_7220_PSXMITWAIT_CHECK_RATE; bail: return ret; } static u32 __iomem *qib_7220_getsendbuf(struct qib_pportdata *ppd, u64 pbc, u32 *pbufnum) { u32 first, last, plen = pbc & QIB_PBC_LENGTH_MASK; struct qib_devdata *dd = ppd->dd; u32 __iomem *buf; if (((pbc >> 32) & PBC_7220_VL15_SEND_CTRL) && !(ppd->lflags & (QIBL_IB_AUTONEG_INPROG | QIBL_LINKACTIVE))) buf = get_7220_link_buf(ppd, pbufnum); else { if ((plen + 1) > dd->piosize2kmax_dwords) first = dd->piobcnt2k; else first = 0; /* try 4k if all 2k busy, so same last for both sizes */ last = dd->cspec->lastbuf_for_pio; buf = qib_getsendbuf_range(dd, pbufnum, first, last); } return buf; } /* these 2 "counters" are really control registers, and are always RW */ static void qib_set_cntr_7220_sample(struct qib_pportdata *ppd, u32 intv, u32 start) { write_7220_creg(ppd->dd, cr_psinterval, intv); write_7220_creg(ppd->dd, cr_psstart, start); } /* * NOTE: no real attempt is made to generalize the SDMA stuff. * At some point "soon" we will have a new more generalized * set of sdma interface, and then we'll clean this up. */ /* Must be called with sdma_lock held, or before init finished */ static void qib_sdma_update_7220_tail(struct qib_pportdata *ppd, u16 tail) { /* Commit writes to memory and advance the tail on the chip */ wmb(); ppd->sdma_descq_tail = tail; qib_write_kreg(ppd->dd, kr_senddmatail, tail); } static void qib_sdma_set_7220_desc_cnt(struct qib_pportdata *ppd, unsigned cnt) { } static struct sdma_set_state_action sdma_7220_action_table[] = { [qib_sdma_state_s00_hw_down] = { .op_enable = 0, .op_intenable = 0, .op_halt = 0, .go_s99_running_tofalse = 1, }, [qib_sdma_state_s10_hw_start_up_wait] = { .op_enable = 1, .op_intenable = 1, .op_halt = 1, }, [qib_sdma_state_s20_idle] = { .op_enable = 1, .op_intenable = 1, .op_halt = 1, }, [qib_sdma_state_s30_sw_clean_up_wait] = { .op_enable = 0, .op_intenable = 1, .op_halt = 0, }, [qib_sdma_state_s40_hw_clean_up_wait] = { .op_enable = 1, .op_intenable = 1, .op_halt = 1, }, [qib_sdma_state_s50_hw_halt_wait] = { .op_enable = 1, .op_intenable = 1, .op_halt = 1, }, [qib_sdma_state_s99_running] = { .op_enable = 1, .op_intenable = 1, .op_halt = 0, .go_s99_running_totrue = 1, }, }; static void qib_7220_sdma_init_early(struct qib_pportdata *ppd) { ppd->sdma_state.set_state_action = sdma_7220_action_table; } static int init_sdma_7220_regs(struct qib_pportdata *ppd) { struct qib_devdata *dd = ppd->dd; unsigned i, n; u64 senddmabufmask[3] = { 0 }; /* Set SendDmaBase */ qib_write_kreg(dd, kr_senddmabase, ppd->sdma_descq_phys); qib_sdma_7220_setlengen(ppd); qib_sdma_update_7220_tail(ppd, 0); /* Set SendDmaTail */ /* Set SendDmaHeadAddr */ qib_write_kreg(dd, kr_senddmaheadaddr, ppd->sdma_head_phys); /* * Reserve all the former "kernel" piobufs, using high number range * so we get as many 4K buffers as possible */ n = dd->piobcnt2k + dd->piobcnt4k; i = n - dd->cspec->sdmabufcnt; for (; i < n; ++i) { unsigned word = i / 64; unsigned bit = i & 63; senddmabufmask[word] |= 1ULL << bit; } qib_write_kreg(dd, kr_senddmabufmask0, senddmabufmask[0]); qib_write_kreg(dd, kr_senddmabufmask1, senddmabufmask[1]); qib_write_kreg(dd, kr_senddmabufmask2, senddmabufmask[2]); ppd->sdma_state.first_sendbuf = i; ppd->sdma_state.last_sendbuf = n; return 0; } /* sdma_lock must be held */ static u16 qib_sdma_7220_gethead(struct qib_pportdata *ppd) { struct qib_devdata *dd = ppd->dd; int sane; int use_dmahead; u16 swhead; u16 swtail; u16 cnt; u16 hwhead; use_dmahead = __qib_sdma_running(ppd) && (dd->flags & QIB_HAS_SDMA_TIMEOUT); retry: hwhead = use_dmahead ? (u16)le64_to_cpu(*ppd->sdma_head_dma) : (u16)qib_read_kreg32(dd, kr_senddmahead); swhead = ppd->sdma_descq_head; swtail = ppd->sdma_descq_tail; cnt = ppd->sdma_descq_cnt; if (swhead < swtail) { /* not wrapped */ sane = (hwhead >= swhead) & (hwhead <= swtail); } else if (swhead > swtail) { /* wrapped around */ sane = ((hwhead >= swhead) && (hwhead < cnt)) || (hwhead <= swtail); } else { /* empty */ sane = (hwhead == swhead); } if (unlikely(!sane)) { if (use_dmahead) { /* try one more time, directly from the register */ use_dmahead = 0; goto retry; } /* assume no progress */ hwhead = swhead; } return hwhead; } static int qib_sdma_7220_busy(struct qib_pportdata *ppd) { u64 hwstatus = qib_read_kreg64(ppd->dd, kr_senddmastatus); return (hwstatus & SYM_MASK(SendDmaStatus, ScoreBoardDrainInProg)) || (hwstatus & SYM_MASK(SendDmaStatus, AbortInProg)) || (hwstatus & SYM_MASK(SendDmaStatus, InternalSDmaEnable)) || !(hwstatus & SYM_MASK(SendDmaStatus, ScbEmpty)); } /* * Compute the amount of delay before sending the next packet if the * port's send rate differs from the static rate set for the QP. * Since the delay affects this packet but the amount of the delay is * based on the length of the previous packet, use the last delay computed * and save the delay count for this packet to be used next time * we get here. */ static u32 qib_7220_setpbc_control(struct qib_pportdata *ppd, u32 plen, u8 srate, u8 vl) { u8 snd_mult = ppd->delay_mult; u8 rcv_mult = ib_rate_to_delay[srate]; u32 ret = ppd->cpspec->last_delay_mult; ppd->cpspec->last_delay_mult = (rcv_mult > snd_mult) ? (plen * (rcv_mult - snd_mult) + 1) >> 1 : 0; /* Indicate VL15, if necessary */ if (vl == 15) ret |= PBC_7220_VL15_SEND_CTRL; return ret; } static void qib_7220_initvl15_bufs(struct qib_devdata *dd) { } static void qib_7220_init_ctxt(struct qib_ctxtdata *rcd) { if (!rcd->ctxt) { rcd->rcvegrcnt = IBA7220_KRCVEGRCNT; rcd->rcvegr_tid_base = 0; } else { rcd->rcvegrcnt = rcd->dd->cspec->rcvegrcnt; rcd->rcvegr_tid_base = IBA7220_KRCVEGRCNT + (rcd->ctxt - 1) * rcd->rcvegrcnt; } } static void qib_7220_txchk_change(struct qib_devdata *dd, u32 start, u32 len, u32 which, struct qib_ctxtdata *rcd) { int i; unsigned long flags; switch (which) { case TXCHK_CHG_TYPE_KERN: /* see if we need to raise avail update threshold */ spin_lock_irqsave(&dd->uctxt_lock, flags); for (i = dd->first_user_ctxt; dd->cspec->updthresh != dd->cspec->updthresh_dflt && i < dd->cfgctxts; i++) if (dd->rcd[i] && dd->rcd[i]->subctxt_cnt && ((dd->rcd[i]->piocnt / dd->rcd[i]->subctxt_cnt) - 1) < dd->cspec->updthresh_dflt) break; spin_unlock_irqrestore(&dd->uctxt_lock, flags); if (i == dd->cfgctxts) { spin_lock_irqsave(&dd->sendctrl_lock, flags); dd->cspec->updthresh = dd->cspec->updthresh_dflt; dd->sendctrl &= ~SYM_MASK(SendCtrl, AvailUpdThld); dd->sendctrl |= (dd->cspec->updthresh & SYM_RMASK(SendCtrl, AvailUpdThld)) << SYM_LSB(SendCtrl, AvailUpdThld); spin_unlock_irqrestore(&dd->sendctrl_lock, flags); sendctrl_7220_mod(dd->pport, QIB_SENDCTRL_AVAIL_BLIP); } break; case TXCHK_CHG_TYPE_USER: spin_lock_irqsave(&dd->sendctrl_lock, flags); if (rcd && rcd->subctxt_cnt && ((rcd->piocnt / rcd->subctxt_cnt) - 1) < dd->cspec->updthresh) { dd->cspec->updthresh = (rcd->piocnt / rcd->subctxt_cnt) - 1; dd->sendctrl &= ~SYM_MASK(SendCtrl, AvailUpdThld); dd->sendctrl |= (dd->cspec->updthresh & SYM_RMASK(SendCtrl, AvailUpdThld)) << SYM_LSB(SendCtrl, AvailUpdThld); spin_unlock_irqrestore(&dd->sendctrl_lock, flags); sendctrl_7220_mod(dd->pport, QIB_SENDCTRL_AVAIL_BLIP); } else spin_unlock_irqrestore(&dd->sendctrl_lock, flags); break; } } static void writescratch(struct qib_devdata *dd, u32 val) { qib_write_kreg(dd, kr_scratch, val); } #define VALID_TS_RD_REG_MASK 0xBF /** * qib_7220_tempsense_rd - read register of temp sensor via TWSI * @dd: the qlogic_ib device * @regnum: register to read from * * returns reg contents (0..255) or < 0 for error */ static int qib_7220_tempsense_rd(struct qib_devdata *dd, int regnum) { int ret; u8 rdata; if (regnum > 7) { ret = -EINVAL; goto bail; } /* return a bogus value for (the one) register we do not have */ if (!((1 << regnum) & VALID_TS_RD_REG_MASK)) { ret = 0; goto bail; } ret = mutex_lock_interruptible(&dd->eep_lock); if (ret) goto bail; ret = qib_twsi_blk_rd(dd, QIB_TWSI_TEMP_DEV, regnum, &rdata, 1); if (!ret) ret = rdata; mutex_unlock(&dd->eep_lock); /* * There are three possibilities here: * ret is actual value (0..255) * ret is -ENXIO or -EINVAL from twsi code or this file * ret is -EINTR from mutex_lock_interruptible. */ bail: return ret; } #ifdef CONFIG_INFINIBAND_QIB_DCA static int qib_7220_notify_dca(struct qib_devdata *dd, unsigned long event) { return 0; } #endif /* Dummy function, as 7220 boards never disable EEPROM Write */ static int qib_7220_eeprom_wen(struct qib_devdata *dd, int wen) { return 1; } /** * qib_init_iba7220_funcs - set up the chip-specific function pointers * @pdev: the pci_dev for qlogic_ib device * @ent: pci_device_id struct for this dev * * This is global, and is called directly at init to set up the * chip-specific function pointers for later use. */ struct qib_devdata *qib_init_iba7220_funcs(struct pci_dev *pdev, const struct pci_device_id *ent) { struct qib_devdata *dd; int ret; u32 boardid, minwidth; dd = qib_alloc_devdata(pdev, sizeof(struct qib_chip_specific) + sizeof(struct qib_chippport_specific)); if (IS_ERR(dd)) goto bail; dd->f_bringup_serdes = qib_7220_bringup_serdes; dd->f_cleanup = qib_setup_7220_cleanup; dd->f_clear_tids = qib_7220_clear_tids; dd->f_free_irq = qib_free_irq; dd->f_get_base_info = qib_7220_get_base_info; dd->f_get_msgheader = qib_7220_get_msgheader; dd->f_getsendbuf = qib_7220_getsendbuf; dd->f_gpio_mod = gpio_7220_mod; dd->f_eeprom_wen = qib_7220_eeprom_wen; dd->f_hdrqempty = qib_7220_hdrqempty; dd->f_ib_updown = qib_7220_ib_updown; dd->f_init_ctxt = qib_7220_init_ctxt; dd->f_initvl15_bufs = qib_7220_initvl15_bufs; dd->f_intr_fallback = qib_7220_intr_fallback; dd->f_late_initreg = qib_late_7220_initreg; dd->f_setpbc_control = qib_7220_setpbc_control; dd->f_portcntr = qib_portcntr_7220; dd->f_put_tid = qib_7220_put_tid; dd->f_quiet_serdes = qib_7220_quiet_serdes; dd->f_rcvctrl = rcvctrl_7220_mod; dd->f_read_cntrs = qib_read_7220cntrs; dd->f_read_portcntrs = qib_read_7220portcntrs; dd->f_reset = qib_setup_7220_reset; dd->f_init_sdma_regs = init_sdma_7220_regs; dd->f_sdma_busy = qib_sdma_7220_busy; dd->f_sdma_gethead = qib_sdma_7220_gethead; dd->f_sdma_sendctrl = qib_7220_sdma_sendctrl; dd->f_sdma_set_desc_cnt = qib_sdma_set_7220_desc_cnt; dd->f_sdma_update_tail = qib_sdma_update_7220_tail; dd->f_sdma_hw_clean_up = qib_7220_sdma_hw_clean_up; dd->f_sdma_hw_start_up = qib_7220_sdma_hw_start_up; dd->f_sdma_init_early = qib_7220_sdma_init_early; dd->f_sendctrl = sendctrl_7220_mod; dd->f_set_armlaunch = qib_set_7220_armlaunch; dd->f_set_cntr_sample = qib_set_cntr_7220_sample; dd->f_iblink_state = qib_7220_iblink_state; dd->f_ibphys_portstate = qib_7220_phys_portstate; dd->f_get_ib_cfg = qib_7220_get_ib_cfg; dd->f_set_ib_cfg = qib_7220_set_ib_cfg; dd->f_set_ib_loopback = qib_7220_set_loopback; dd->f_set_intr_state = qib_7220_set_intr_state; dd->f_setextled = qib_setup_7220_setextled; dd->f_txchk_change = qib_7220_txchk_change; dd->f_update_usrhead = qib_update_7220_usrhead; dd->f_wantpiobuf_intr = qib_wantpiobuf_7220_intr; dd->f_xgxs_reset = qib_7220_xgxs_reset; dd->f_writescratch = writescratch; dd->f_tempsense_rd = qib_7220_tempsense_rd; #ifdef CONFIG_INFINIBAND_QIB_DCA dd->f_notify_dca = qib_7220_notify_dca; #endif /* * Do remaining pcie setup and save pcie values in dd. * Any error printing is already done by the init code. * On return, we have the chip mapped, but chip registers * are not set up until start of qib_init_7220_variables. */ ret = qib_pcie_ddinit(dd, pdev, ent); if (ret < 0) goto bail_free; /* initialize chip-specific variables */ ret = qib_init_7220_variables(dd); if (ret) goto bail_cleanup; if (qib_mini_init) goto bail; boardid = SYM_FIELD(dd->revision, Revision, BoardID); switch (boardid) { case 0: case 2: case 10: case 12: minwidth = 16; /* x16 capable boards */ break; default: minwidth = 8; /* x8 capable boards */ break; } if (qib_pcie_params(dd, minwidth, NULL)) qib_dev_err(dd, "Failed to setup PCIe or interrupts; continuing anyway\n"); if (qib_read_kreg64(dd, kr_hwerrstatus) & QLOGIC_IB_HWE_SERDESPLLFAILED) qib_write_kreg(dd, kr_hwerrclear, QLOGIC_IB_HWE_SERDESPLLFAILED); /* setup interrupt handler (interrupt type handled above) */ qib_setup_7220_interrupt(dd); qib_7220_init_hwerrors(dd); /* clear diagctrl register, in case diags were running and crashed */ qib_write_kreg(dd, kr_hwdiagctrl, 0); goto bail; bail_cleanup: qib_pcie_ddcleanup(dd); bail_free: qib_free_devdata(dd); dd = ERR_PTR(ret); bail: return dd; }
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