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linux/drivers/infiniband/hw/ipath/ipath_iba7220.c

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/*
* Copyright (c) 2006, 2007, 2008 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
* InfiniPath 7220 chip (except that specific to the SerDes)
*/
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <rdma/ib_verbs.h>
#include "ipath_kernel.h"
#include "ipath_registers.h"
#include "ipath_7220.h"
static void ipath_setup_7220_setextled(struct ipath_devdata *, u64, u64);
static unsigned ipath_compat_ddr_negotiate = 1;
module_param_named(compat_ddr_negotiate, ipath_compat_ddr_negotiate, uint,
S_IWUSR | S_IRUGO);
MODULE_PARM_DESC(compat_ddr_negotiate,
"Attempt pre-IBTA 1.2 DDR speed negotiation");
static unsigned ipath_sdma_fetch_arb = 1;
module_param_named(fetch_arb, ipath_sdma_fetch_arb, uint, S_IRUGO);
MODULE_PARM_DESC(fetch_arb, "IBA7220: change SDMA descriptor arbitration");
/*
* This file contains almost all the chip-specific register information and
* access functions for the QLogic InfiniPath 7220 PCI-Express chip, with the
* exception of SerDes support, which in in ipath_sd7220.c.
*
* This lists the InfiniPath registers, in the actual chip layout.
* This structure should never be directly accessed.
*/
struct _infinipath_do_not_use_kernel_regs {
unsigned long long Revision;
unsigned long long Control;
unsigned long long PageAlign;
unsigned long long PortCnt;
unsigned long long DebugPortSelect;
unsigned long long DebugSigsIntSel; /* was Reserved0;*/
unsigned long long SendRegBase;
unsigned long long UserRegBase;
unsigned long long CounterRegBase;
unsigned long long Scratch;
unsigned long long EEPROMAddrCmd; /* was Reserved1; */
unsigned long long EEPROMData; /* was Reserved2; */
unsigned long long IntBlocked;
unsigned long long IntMask;
unsigned long long IntStatus;
unsigned long long IntClear;
unsigned long long ErrorMask;
unsigned long long ErrorStatus;
unsigned long long ErrorClear;
unsigned long long HwErrMask;
unsigned long long HwErrStatus;
unsigned long long HwErrClear;
unsigned long long HwDiagCtrl;
unsigned long long MDIO;
unsigned long long IBCStatus;
unsigned long long IBCCtrl;
unsigned long long ExtStatus;
unsigned long long ExtCtrl;
unsigned long long GPIOOut;
unsigned long long GPIOMask;
unsigned long long GPIOStatus;
unsigned long long GPIOClear;
unsigned long long RcvCtrl;
unsigned long long RcvBTHQP;
unsigned long long RcvHdrSize;
unsigned long long RcvHdrCnt;
unsigned long long RcvHdrEntSize;
unsigned long long RcvTIDBase;
unsigned long long RcvTIDCnt;
unsigned long long RcvEgrBase;
unsigned long long RcvEgrCnt;
unsigned long long RcvBufBase;
unsigned long long RcvBufSize;
unsigned long long RxIntMemBase;
unsigned long long RxIntMemSize;
unsigned long long RcvPartitionKey;
unsigned long long RcvQPMulticastPort;
unsigned long long RcvPktLEDCnt;
unsigned long long IBCDDRCtrl;
unsigned long long HRTBT_GUID;
unsigned long long IB_SDTEST_IF_TX;
unsigned long long IB_SDTEST_IF_RX;
unsigned long long IBCDDRCtrl2;
unsigned long long IBCDDRStatus;
unsigned long long JIntReload;
unsigned long long IBNCModeCtrl;
unsigned long long SendCtrl;
unsigned long long SendBufBase;
unsigned long long SendBufSize;
unsigned long long SendBufCnt;
unsigned long long SendAvailAddr;
unsigned long long TxIntMemBase;
unsigned long long TxIntMemSize;
unsigned long long SendDmaBase;
unsigned long long SendDmaLenGen;
unsigned long long SendDmaTail;
unsigned long long SendDmaHead;
unsigned long long SendDmaHeadAddr;
unsigned long long SendDmaBufMask0;
unsigned long long SendDmaBufMask1;
unsigned long long SendDmaBufMask2;
unsigned long long SendDmaStatus;
unsigned long long SendBufferError;
unsigned long long SendBufferErrorCONT1;
unsigned long long SendBufErr2; /* was Reserved6SBE[0/6] */
unsigned long long Reserved6L[2];
unsigned long long AvailUpdCount;
unsigned long long RcvHdrAddr0;
unsigned long long RcvHdrAddrs[16]; /* Why enumerate? */
unsigned long long Reserved7hdtl; /* Align next to 300 */
unsigned long long RcvHdrTailAddr0; /* 300, like others */
unsigned long long RcvHdrTailAddrs[16];
unsigned long long Reserved9SW[7]; /* was [8]; we have 17 ports */
unsigned long long IbsdEpbAccCtl; /* IB Serdes EPB access control */
unsigned long long IbsdEpbTransReg; /* IB Serdes EPB Transaction */
unsigned long long Reserved10sds; /* was SerdesStatus on */
unsigned long long XGXSConfig;
unsigned long long IBSerDesCtrl; /* Was IBPLLCfg on Monty */
unsigned long long EEPCtlStat; /* for "boot" EEPROM/FLASH */
unsigned long long EEPAddrCmd;
unsigned long long EEPData;
unsigned long long PcieEpbAccCtl;
unsigned long long PcieEpbTransCtl;
unsigned long long EfuseCtl; /* E-Fuse control */
unsigned long long EfuseData[4];
unsigned long long ProcMon;
/* this chip moves following two from previous 200, 208 */
unsigned long long PCIeRBufTestReg0;
unsigned long long PCIeRBufTestReg1;
/* added for this chip */
unsigned long long PCIeRBufTestReg2;
unsigned long long PCIeRBufTestReg3;
/* added for this chip, debug only */
unsigned long long SPC_JTAG_ACCESS_REG;
unsigned long long LAControlReg;
unsigned long long GPIODebugSelReg;
unsigned long long DebugPortValueReg;
/* added for this chip, DMA */
unsigned long long SendDmaBufUsed[3];
unsigned long long SendDmaReqTagUsed;
/*
* added for this chip, EFUSE: note that these program 64-bit
* words 2 and 3 */
unsigned long long efuse_pgm_data[2];
unsigned long long Reserved11LAalign[10]; /* Skip 4B0..4F8 */
/* we have 30 regs for DDS and RXEQ in IB SERDES */
unsigned long long SerDesDDSRXEQ[30];
unsigned long long Reserved12LAalign[2]; /* Skip 5F0, 5F8 */
/* added for LA debug support */
unsigned long long LAMemory[32];
};
struct _infinipath_do_not_use_counters {
__u64 LBIntCnt;
__u64 LBFlowStallCnt;
__u64 TxSDmaDescCnt; /* was Reserved1 */
__u64 TxUnsupVLErrCnt;
__u64 TxDataPktCnt;
__u64 TxFlowPktCnt;
__u64 TxDwordCnt;
__u64 TxLenErrCnt;
__u64 TxMaxMinLenErrCnt;
__u64 TxUnderrunCnt;
__u64 TxFlowStallCnt;
__u64 TxDroppedPktCnt;
__u64 RxDroppedPktCnt;
__u64 RxDataPktCnt;
__u64 RxFlowPktCnt;
__u64 RxDwordCnt;
__u64 RxLenErrCnt;
__u64 RxMaxMinLenErrCnt;
__u64 RxICRCErrCnt;
__u64 RxVCRCErrCnt;
__u64 RxFlowCtrlErrCnt;
__u64 RxBadFormatCnt;
__u64 RxLinkProblemCnt;
__u64 RxEBPCnt;
__u64 RxLPCRCErrCnt;
__u64 RxBufOvflCnt;
__u64 RxTIDFullErrCnt;
__u64 RxTIDValidErrCnt;
__u64 RxPKeyMismatchCnt;
__u64 RxP0HdrEgrOvflCnt;
__u64 RxP1HdrEgrOvflCnt;
__u64 RxP2HdrEgrOvflCnt;
__u64 RxP3HdrEgrOvflCnt;
__u64 RxP4HdrEgrOvflCnt;
__u64 RxP5HdrEgrOvflCnt;
__u64 RxP6HdrEgrOvflCnt;
__u64 RxP7HdrEgrOvflCnt;
__u64 RxP8HdrEgrOvflCnt;
__u64 RxP9HdrEgrOvflCnt; /* was Reserved6 */
__u64 RxP10HdrEgrOvflCnt; /* was Reserved7 */
__u64 RxP11HdrEgrOvflCnt; /* new for IBA7220 */
__u64 RxP12HdrEgrOvflCnt; /* new for IBA7220 */
__u64 RxP13HdrEgrOvflCnt; /* new for IBA7220 */
__u64 RxP14HdrEgrOvflCnt; /* new for IBA7220 */
__u64 RxP15HdrEgrOvflCnt; /* new for IBA7220 */
__u64 RxP16HdrEgrOvflCnt; /* new for IBA7220 */
__u64 IBStatusChangeCnt;
__u64 IBLinkErrRecoveryCnt;
__u64 IBLinkDownedCnt;
__u64 IBSymbolErrCnt;
/* The following are new for IBA7220 */
__u64 RxVL15DroppedPktCnt;
__u64 RxOtherLocalPhyErrCnt;
__u64 PcieRetryBufDiagQwordCnt;
__u64 ExcessBufferOvflCnt;
__u64 LocalLinkIntegrityErrCnt;
__u64 RxVlErrCnt;
__u64 RxDlidFltrCnt;
__u64 Reserved8[7];
__u64 PSStat;
__u64 PSStart;
__u64 PSInterval;
__u64 PSRcvDataCount;
__u64 PSRcvPktsCount;
__u64 PSXmitDataCount;
__u64 PSXmitPktsCount;
__u64 PSXmitWaitCount;
};
#define IPATH_KREG_OFFSET(field) (offsetof( \
struct _infinipath_do_not_use_kernel_regs, field) / sizeof(u64))
#define IPATH_CREG_OFFSET(field) (offsetof( \
struct _infinipath_do_not_use_counters, field) / sizeof(u64))
static const struct ipath_kregs ipath_7220_kregs = {
.kr_control = IPATH_KREG_OFFSET(Control),
.kr_counterregbase = IPATH_KREG_OFFSET(CounterRegBase),
.kr_debugportselect = IPATH_KREG_OFFSET(DebugPortSelect),
.kr_errorclear = IPATH_KREG_OFFSET(ErrorClear),
.kr_errormask = IPATH_KREG_OFFSET(ErrorMask),
.kr_errorstatus = IPATH_KREG_OFFSET(ErrorStatus),
.kr_extctrl = IPATH_KREG_OFFSET(ExtCtrl),
.kr_extstatus = IPATH_KREG_OFFSET(ExtStatus),
.kr_gpio_clear = IPATH_KREG_OFFSET(GPIOClear),
.kr_gpio_mask = IPATH_KREG_OFFSET(GPIOMask),
.kr_gpio_out = IPATH_KREG_OFFSET(GPIOOut),
.kr_gpio_status = IPATH_KREG_OFFSET(GPIOStatus),
.kr_hwdiagctrl = IPATH_KREG_OFFSET(HwDiagCtrl),
.kr_hwerrclear = IPATH_KREG_OFFSET(HwErrClear),
.kr_hwerrmask = IPATH_KREG_OFFSET(HwErrMask),
.kr_hwerrstatus = IPATH_KREG_OFFSET(HwErrStatus),
.kr_ibcctrl = IPATH_KREG_OFFSET(IBCCtrl),
.kr_ibcstatus = IPATH_KREG_OFFSET(IBCStatus),
.kr_intblocked = IPATH_KREG_OFFSET(IntBlocked),
.kr_intclear = IPATH_KREG_OFFSET(IntClear),
.kr_intmask = IPATH_KREG_OFFSET(IntMask),
.kr_intstatus = IPATH_KREG_OFFSET(IntStatus),
.kr_mdio = IPATH_KREG_OFFSET(MDIO),
.kr_pagealign = IPATH_KREG_OFFSET(PageAlign),
.kr_partitionkey = IPATH_KREG_OFFSET(RcvPartitionKey),
.kr_portcnt = IPATH_KREG_OFFSET(PortCnt),
.kr_rcvbthqp = IPATH_KREG_OFFSET(RcvBTHQP),
.kr_rcvbufbase = IPATH_KREG_OFFSET(RcvBufBase),
.kr_rcvbufsize = IPATH_KREG_OFFSET(RcvBufSize),
.kr_rcvctrl = IPATH_KREG_OFFSET(RcvCtrl),
.kr_rcvegrbase = IPATH_KREG_OFFSET(RcvEgrBase),
.kr_rcvegrcnt = IPATH_KREG_OFFSET(RcvEgrCnt),
.kr_rcvhdrcnt = IPATH_KREG_OFFSET(RcvHdrCnt),
.kr_rcvhdrentsize = IPATH_KREG_OFFSET(RcvHdrEntSize),
.kr_rcvhdrsize = IPATH_KREG_OFFSET(RcvHdrSize),
.kr_rcvintmembase = IPATH_KREG_OFFSET(RxIntMemBase),
.kr_rcvintmemsize = IPATH_KREG_OFFSET(RxIntMemSize),
.kr_rcvtidbase = IPATH_KREG_OFFSET(RcvTIDBase),
.kr_rcvtidcnt = IPATH_KREG_OFFSET(RcvTIDCnt),
.kr_revision = IPATH_KREG_OFFSET(Revision),
.kr_scratch = IPATH_KREG_OFFSET(Scratch),
.kr_sendbuffererror = IPATH_KREG_OFFSET(SendBufferError),
.kr_sendctrl = IPATH_KREG_OFFSET(SendCtrl),
.kr_sendpioavailaddr = IPATH_KREG_OFFSET(SendAvailAddr),
.kr_sendpiobufbase = IPATH_KREG_OFFSET(SendBufBase),
.kr_sendpiobufcnt = IPATH_KREG_OFFSET(SendBufCnt),
.kr_sendpiosize = IPATH_KREG_OFFSET(SendBufSize),
.kr_sendregbase = IPATH_KREG_OFFSET(SendRegBase),
.kr_txintmembase = IPATH_KREG_OFFSET(TxIntMemBase),
.kr_txintmemsize = IPATH_KREG_OFFSET(TxIntMemSize),
.kr_userregbase = IPATH_KREG_OFFSET(UserRegBase),
.kr_xgxsconfig = IPATH_KREG_OFFSET(XGXSConfig),
/* send dma related regs */
.kr_senddmabase = IPATH_KREG_OFFSET(SendDmaBase),
.kr_senddmalengen = IPATH_KREG_OFFSET(SendDmaLenGen),
.kr_senddmatail = IPATH_KREG_OFFSET(SendDmaTail),
.kr_senddmahead = IPATH_KREG_OFFSET(SendDmaHead),
.kr_senddmaheadaddr = IPATH_KREG_OFFSET(SendDmaHeadAddr),
.kr_senddmabufmask0 = IPATH_KREG_OFFSET(SendDmaBufMask0),
.kr_senddmabufmask1 = IPATH_KREG_OFFSET(SendDmaBufMask1),
.kr_senddmabufmask2 = IPATH_KREG_OFFSET(SendDmaBufMask2),
.kr_senddmastatus = IPATH_KREG_OFFSET(SendDmaStatus),
/* SerDes related regs */
.kr_ibserdesctrl = IPATH_KREG_OFFSET(IBSerDesCtrl),
.kr_ib_epbacc = IPATH_KREG_OFFSET(IbsdEpbAccCtl),
.kr_ib_epbtrans = IPATH_KREG_OFFSET(IbsdEpbTransReg),
.kr_pcie_epbacc = IPATH_KREG_OFFSET(PcieEpbAccCtl),
.kr_pcie_epbtrans = IPATH_KREG_OFFSET(PcieEpbTransCtl),
.kr_ib_ddsrxeq = IPATH_KREG_OFFSET(SerDesDDSRXEQ),
/*
* These should not be used directly via ipath_read_kreg64(),
* use them with ipath_read_kreg64_port()
*/
.kr_rcvhdraddr = IPATH_KREG_OFFSET(RcvHdrAddr0),
.kr_rcvhdrtailaddr = IPATH_KREG_OFFSET(RcvHdrTailAddr0),
/*
* The rcvpktled register controls one of the debug port signals, so
* a packet activity LED can be connected to it.
*/
.kr_rcvpktledcnt = IPATH_KREG_OFFSET(RcvPktLEDCnt),
.kr_pcierbuftestreg0 = IPATH_KREG_OFFSET(PCIeRBufTestReg0),
.kr_pcierbuftestreg1 = IPATH_KREG_OFFSET(PCIeRBufTestReg1),
.kr_hrtbt_guid = IPATH_KREG_OFFSET(HRTBT_GUID),
.kr_ibcddrctrl = IPATH_KREG_OFFSET(IBCDDRCtrl),
.kr_ibcddrstatus = IPATH_KREG_OFFSET(IBCDDRStatus),
.kr_jintreload = IPATH_KREG_OFFSET(JIntReload)
};
static const struct ipath_cregs ipath_7220_cregs = {
.cr_badformatcnt = IPATH_CREG_OFFSET(RxBadFormatCnt),
.cr_erricrccnt = IPATH_CREG_OFFSET(RxICRCErrCnt),
.cr_errlinkcnt = IPATH_CREG_OFFSET(RxLinkProblemCnt),
.cr_errlpcrccnt = IPATH_CREG_OFFSET(RxLPCRCErrCnt),
.cr_errpkey = IPATH_CREG_OFFSET(RxPKeyMismatchCnt),
.cr_errrcvflowctrlcnt = IPATH_CREG_OFFSET(RxFlowCtrlErrCnt),
.cr_err_rlencnt = IPATH_CREG_OFFSET(RxLenErrCnt),
.cr_errslencnt = IPATH_CREG_OFFSET(TxLenErrCnt),
.cr_errtidfull = IPATH_CREG_OFFSET(RxTIDFullErrCnt),
.cr_errtidvalid = IPATH_CREG_OFFSET(RxTIDValidErrCnt),
.cr_errvcrccnt = IPATH_CREG_OFFSET(RxVCRCErrCnt),
.cr_ibstatuschange = IPATH_CREG_OFFSET(IBStatusChangeCnt),
.cr_intcnt = IPATH_CREG_OFFSET(LBIntCnt),
.cr_invalidrlencnt = IPATH_CREG_OFFSET(RxMaxMinLenErrCnt),
.cr_invalidslencnt = IPATH_CREG_OFFSET(TxMaxMinLenErrCnt),
.cr_lbflowstallcnt = IPATH_CREG_OFFSET(LBFlowStallCnt),
.cr_pktrcvcnt = IPATH_CREG_OFFSET(RxDataPktCnt),
.cr_pktrcvflowctrlcnt = IPATH_CREG_OFFSET(RxFlowPktCnt),
.cr_pktsendcnt = IPATH_CREG_OFFSET(TxDataPktCnt),
.cr_pktsendflowcnt = IPATH_CREG_OFFSET(TxFlowPktCnt),
.cr_portovflcnt = IPATH_CREG_OFFSET(RxP0HdrEgrOvflCnt),
.cr_rcvebpcnt = IPATH_CREG_OFFSET(RxEBPCnt),
.cr_rcvovflcnt = IPATH_CREG_OFFSET(RxBufOvflCnt),
.cr_senddropped = IPATH_CREG_OFFSET(TxDroppedPktCnt),
.cr_sendstallcnt = IPATH_CREG_OFFSET(TxFlowStallCnt),
.cr_sendunderruncnt = IPATH_CREG_OFFSET(TxUnderrunCnt),
.cr_wordrcvcnt = IPATH_CREG_OFFSET(RxDwordCnt),
.cr_wordsendcnt = IPATH_CREG_OFFSET(TxDwordCnt),
.cr_unsupvlcnt = IPATH_CREG_OFFSET(TxUnsupVLErrCnt),
.cr_rxdroppktcnt = IPATH_CREG_OFFSET(RxDroppedPktCnt),
.cr_iblinkerrrecovcnt = IPATH_CREG_OFFSET(IBLinkErrRecoveryCnt),
.cr_iblinkdowncnt = IPATH_CREG_OFFSET(IBLinkDownedCnt),
.cr_ibsymbolerrcnt = IPATH_CREG_OFFSET(IBSymbolErrCnt),
.cr_vl15droppedpktcnt = IPATH_CREG_OFFSET(RxVL15DroppedPktCnt),
.cr_rxotherlocalphyerrcnt =
IPATH_CREG_OFFSET(RxOtherLocalPhyErrCnt),
.cr_excessbufferovflcnt = IPATH_CREG_OFFSET(ExcessBufferOvflCnt),
.cr_locallinkintegrityerrcnt =
IPATH_CREG_OFFSET(LocalLinkIntegrityErrCnt),
.cr_rxvlerrcnt = IPATH_CREG_OFFSET(RxVlErrCnt),
.cr_rxdlidfltrcnt = IPATH_CREG_OFFSET(RxDlidFltrCnt),
.cr_psstat = IPATH_CREG_OFFSET(PSStat),
.cr_psstart = IPATH_CREG_OFFSET(PSStart),
.cr_psinterval = IPATH_CREG_OFFSET(PSInterval),
.cr_psrcvdatacount = IPATH_CREG_OFFSET(PSRcvDataCount),
.cr_psrcvpktscount = IPATH_CREG_OFFSET(PSRcvPktsCount),
.cr_psxmitdatacount = IPATH_CREG_OFFSET(PSXmitDataCount),
.cr_psxmitpktscount = IPATH_CREG_OFFSET(PSXmitPktsCount),
.cr_psxmitwaitcount = IPATH_CREG_OFFSET(PSXmitWaitCount),
};
/* kr_control bits */
#define INFINIPATH_C_RESET (1U<<7)
/* kr_intstatus, kr_intclear, kr_intmask bits */
#define INFINIPATH_I_RCVURG_MASK ((1ULL<<17)-1)
#define INFINIPATH_I_RCVURG_SHIFT 32
#define INFINIPATH_I_RCVAVAIL_MASK ((1ULL<<17)-1)
#define INFINIPATH_I_RCVAVAIL_SHIFT 0
#define INFINIPATH_I_SERDESTRIMDONE (1ULL<<27)
/* kr_hwerrclear, kr_hwerrmask, kr_hwerrstatus, bits */
#define INFINIPATH_HWE_PCIEMEMPARITYERR_MASK 0x00000000000000ffULL
#define INFINIPATH_HWE_PCIEMEMPARITYERR_SHIFT 0
#define INFINIPATH_HWE_PCIEPOISONEDTLP 0x0000000010000000ULL
#define INFINIPATH_HWE_PCIECPLTIMEOUT 0x0000000020000000ULL
#define INFINIPATH_HWE_PCIEBUSPARITYXTLH 0x0000000040000000ULL
#define INFINIPATH_HWE_PCIEBUSPARITYXADM 0x0000000080000000ULL
#define INFINIPATH_HWE_PCIEBUSPARITYRADM 0x0000000100000000ULL
#define INFINIPATH_HWE_COREPLL_FBSLIP 0x0080000000000000ULL
#define INFINIPATH_HWE_COREPLL_RFSLIP 0x0100000000000000ULL
#define INFINIPATH_HWE_PCIE1PLLFAILED 0x0400000000000000ULL
#define INFINIPATH_HWE_PCIE0PLLFAILED 0x0800000000000000ULL
#define INFINIPATH_HWE_SERDESPLLFAILED 0x1000000000000000ULL
/* specific to this chip */
#define INFINIPATH_HWE_PCIECPLDATAQUEUEERR 0x0000000000000040ULL
#define INFINIPATH_HWE_PCIECPLHDRQUEUEERR 0x0000000000000080ULL
#define INFINIPATH_HWE_SDMAMEMREADERR 0x0000000010000000ULL
#define INFINIPATH_HWE_CLK_UC_PLLNOTLOCKED 0x2000000000000000ULL
#define INFINIPATH_HWE_PCIESERDESQ0PCLKNOTDETECT 0x0100000000000000ULL
#define INFINIPATH_HWE_PCIESERDESQ1PCLKNOTDETECT 0x0200000000000000ULL
#define INFINIPATH_HWE_PCIESERDESQ2PCLKNOTDETECT 0x0400000000000000ULL
#define INFINIPATH_HWE_PCIESERDESQ3PCLKNOTDETECT 0x0800000000000000ULL
#define INFINIPATH_HWE_DDSRXEQMEMORYPARITYERR 0x0000008000000000ULL
#define INFINIPATH_HWE_IB_UC_MEMORYPARITYERR 0x0000004000000000ULL
#define INFINIPATH_HWE_PCIE_UC_OCT0MEMORYPARITYERR 0x0000001000000000ULL
#define INFINIPATH_HWE_PCIE_UC_OCT1MEMORYPARITYERR 0x0000002000000000ULL
#define IBA7220_IBCS_LINKTRAININGSTATE_MASK 0x1F
#define IBA7220_IBCS_LINKSTATE_SHIFT 5
#define IBA7220_IBCS_LINKSPEED_SHIFT 8
#define IBA7220_IBCS_LINKWIDTH_SHIFT 9
#define IBA7220_IBCC_LINKINITCMD_MASK 0x7ULL
#define IBA7220_IBCC_LINKCMD_SHIFT 19
#define IBA7220_IBCC_MAXPKTLEN_SHIFT 21
/* kr_ibcddrctrl bits */
#define IBA7220_IBC_DLIDLMC_MASK 0xFFFFFFFFUL
#define IBA7220_IBC_DLIDLMC_SHIFT 32
#define IBA7220_IBC_HRTBT_MASK 3
#define IBA7220_IBC_HRTBT_SHIFT 16
#define IBA7220_IBC_HRTBT_ENB 0x10000UL
#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 INFINIPATH_EXTS_FREQSEL 0x2
#define INFINIPATH_EXTS_SERDESSEL 0x4
#define INFINIPATH_EXTS_MEMBIST_ENDTEST 0x0000000000004000
#define INFINIPATH_EXTS_MEMBIST_DISABLED 0x0000000000008000
/* kr_xgxsconfig bits */
#define INFINIPATH_XGXS_RESET 0x5ULL
#define INFINIPATH_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 _IPATH_GPIO_SDA_NUM 1
#define _IPATH_GPIO_SCL_NUM 0
#define IPATH_GPIO_SDA (1ULL << \
(_IPATH_GPIO_SDA_NUM+INFINIPATH_EXTC_GPIOOE_SHIFT))
#define IPATH_GPIO_SCL (1ULL << \
(_IPATH_GPIO_SCL_NUM+INFINIPATH_EXTC_GPIOOE_SHIFT))
#define IBA7220_R_INTRAVAIL_SHIFT 17
#define IBA7220_R_TAILUPD_SHIFT 35
#define IBA7220_R_PORTCFG_SHIFT 36
#define INFINIPATH_JINT_PACKETSHIFT 16
#define INFINIPATH_JINT_DEFAULT_IDLE_TICKS 0
#define INFINIPATH_JINT_DEFAULT_MAX_PACKETS 0
#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 IPATH_AUTONEG_TRIES 5 /* sequential retries to negotiate DDR */
static char int_type[16] = "auto";
module_param_string(interrupt_type, int_type, sizeof(int_type), 0444);
MODULE_PARM_DESC(int_type, " interrupt_type=auto|force_msi|force_intx\n");
/* packet rate matching delay; chip has support */
static u8 rate_to_delay[2][2] = {
/* 1x, 4x */
{ 8, 2 }, /* SDR */
{ 4, 1 } /* DDR */
};
/* 7220 specific hardware errors... */
static const struct ipath_hwerror_msgs ipath_7220_hwerror_msgs[] = {
INFINIPATH_HWE_MSG(PCIEPOISONEDTLP, "PCIe Poisoned TLP"),
INFINIPATH_HWE_MSG(PCIECPLTIMEOUT, "PCIe completion timeout"),
/*
* In practice, it's unlikely wthat 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.
*/
INFINIPATH_HWE_MSG(PCIE1PLLFAILED, "PCIePLL1"),
INFINIPATH_HWE_MSG(PCIE0PLLFAILED, "PCIePLL0"),
INFINIPATH_HWE_MSG(PCIEBUSPARITYXTLH, "PCIe XTLH core parity"),
INFINIPATH_HWE_MSG(PCIEBUSPARITYXADM, "PCIe ADM TX core parity"),
INFINIPATH_HWE_MSG(PCIEBUSPARITYRADM, "PCIe ADM RX core parity"),
INFINIPATH_HWE_MSG(RXDSYNCMEMPARITYERR, "Rx Dsync"),
INFINIPATH_HWE_MSG(SERDESPLLFAILED, "SerDes PLL"),
INFINIPATH_HWE_MSG(PCIECPLDATAQUEUEERR, "PCIe cpl header queue"),
INFINIPATH_HWE_MSG(PCIECPLHDRQUEUEERR, "PCIe cpl data queue"),
INFINIPATH_HWE_MSG(SDMAMEMREADERR, "Send DMA memory read"),
INFINIPATH_HWE_MSG(CLK_UC_PLLNOTLOCKED, "uC PLL clock not locked"),
INFINIPATH_HWE_MSG(PCIESERDESQ0PCLKNOTDETECT,
"PCIe serdes Q0 no clock"),
INFINIPATH_HWE_MSG(PCIESERDESQ1PCLKNOTDETECT,
"PCIe serdes Q1 no clock"),
INFINIPATH_HWE_MSG(PCIESERDESQ2PCLKNOTDETECT,
"PCIe serdes Q2 no clock"),
INFINIPATH_HWE_MSG(PCIESERDESQ3PCLKNOTDETECT,
"PCIe serdes Q3 no clock"),
INFINIPATH_HWE_MSG(DDSRXEQMEMORYPARITYERR,
"DDS RXEQ memory parity"),
INFINIPATH_HWE_MSG(IB_UC_MEMORYPARITYERR, "IB uC memory parity"),
INFINIPATH_HWE_MSG(PCIE_UC_OCT0MEMORYPARITYERR,
"PCIe uC oct0 memory parity"),
INFINIPATH_HWE_MSG(PCIE_UC_OCT1MEMORYPARITYERR,
"PCIe uC oct1 memory parity"),
};
static void autoneg_work(struct work_struct *);
/*
* the offset is different for different configured port numbers, since
* port0 is fixed in size, but others can vary. Make it a function to
* make the issue more obvious.
*/
static inline u32 port_egrtid_idx(struct ipath_devdata *dd, unsigned port)
{
return port ? dd->ipath_p0_rcvegrcnt +
(port-1) * dd->ipath_rcvegrcnt : 0;
}
static void ipath_7220_txe_recover(struct ipath_devdata *dd)
{
++ipath_stats.sps_txeparity;
dev_info(&dd->pcidev->dev,
"Recovering from TXE PIO parity error\n");
ipath_disarm_senderrbufs(dd);
}
/**
* ipath_7220_handle_hwerrors - display hardware errors.
* @dd: the infinipath 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
* ipath_handle_errors() to avoid excessive stack usage.
*/
static void ipath_7220_handle_hwerrors(struct ipath_devdata *dd, char *msg,
size_t msgl)
{
ipath_err_t hwerrs;
u32 bits, ctrl;
int isfatal = 0;
char bitsmsg[64];
int log_idx;
hwerrs = ipath_read_kreg64(dd, dd->ipath_kregs->kr_hwerrstatus);
if (!hwerrs) {
/*
* better than printing cofusing messages
* This seems to be related to clearing the crc error, or
* the pll error during init.
*/
ipath_cdbg(VERBOSE, "Called but no hardware errors set\n");
goto bail;
} else if (hwerrs == ~0ULL) {
ipath_dev_err(dd, "Read of hardware error status failed "
"(all bits set); ignoring\n");
goto bail;
}
ipath_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.
*/
ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear,
hwerrs&~INFINIPATH_HWE_MEMBISTFAILED);
hwerrs &= dd->ipath_hwerrmask;
/* We log some errors to EEPROM, check if we have any of those. */
for (log_idx = 0; log_idx < IPATH_EEP_LOG_CNT; ++log_idx)
if (hwerrs & dd->ipath_eep_st_masks[log_idx].hwerrs_to_log)
ipath_inc_eeprom_err(dd, log_idx, 1);
/*
* Make sure we get this much out, unless told to be quiet,
* or it's occurred within the last 5 seconds.
*/
if ((hwerrs & ~(dd->ipath_lasthwerror |
((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF |
INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC)
<< INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT))) ||
(ipath_debug & __IPATH_VERBDBG))
dev_info(&dd->pcidev->dev, "Hardware error: hwerr=0x%llx "
"(cleared)\n", (unsigned long long) hwerrs);
dd->ipath_lasthwerror |= hwerrs;
if (hwerrs & ~dd->ipath_hwe_bitsextant)
ipath_dev_err(dd, "hwerror interrupt with unknown errors "
"%llx set\n", (unsigned long long)
(hwerrs & ~dd->ipath_hwe_bitsextant));
if (hwerrs & INFINIPATH_HWE_IB_UC_MEMORYPARITYERR)
ipath_sd7220_clr_ibpar(dd);
ctrl = ipath_read_kreg32(dd, dd->ipath_kregs->kr_control);
if ((ctrl & INFINIPATH_C_FREEZEMODE) && !ipath_diag_inuse) {
/*
* Parity errors in send memory are recoverable by h/w
* just do housekeeping, exit freeze mode and continue.
*/
if (hwerrs & ((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF |
INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC)
<< INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT)) {
ipath_7220_txe_recover(dd);
hwerrs &= ~((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF |
INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC)
<< INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT);
}
if (hwerrs) {
/*
* If any set that we aren't ignoring only make the
* complaint once, in case it's stuck or recurring,
* and we get here multiple times
* Force link down, so switch knows, and
* LEDs are turned off.
*/
if (dd->ipath_flags & IPATH_INITTED) {
ipath_set_linkstate(dd, IPATH_IB_LINKDOWN);
ipath_setup_7220_setextled(dd,
INFINIPATH_IBCS_L_STATE_DOWN,
INFINIPATH_IBCS_LT_STATE_DISABLED);
ipath_dev_err(dd, "Fatal Hardware Error "
"(freeze mode), no longer"
" usable, SN %.16s\n",
dd->ipath_serial);
isfatal = 1;
}
/*
* Mark as having had an error for driver, and also
* for /sys and status word mapped to user programs.
* This marks unit as not usable, until reset.
*/
*dd->ipath_statusp &= ~IPATH_STATUS_IB_READY;
*dd->ipath_statusp |= IPATH_STATUS_HWERROR;
dd->ipath_flags &= ~IPATH_INITTED;
} else {
ipath_dbg("Clearing freezemode on ignored or "
"recovered hardware error\n");
ipath_clear_freeze(dd);
}
}
*msg = '\0';
if (hwerrs & INFINIPATH_HWE_MEMBISTFAILED) {
strlcat(msg, "[Memory BIST test failed, "
"InfiniPath hardware unusable]", msgl);
/* ignore from now on, so disable until driver reloaded */
*dd->ipath_statusp |= IPATH_STATUS_HWERROR;
dd->ipath_hwerrmask &= ~INFINIPATH_HWE_MEMBISTFAILED;
ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask,
dd->ipath_hwerrmask);
}
ipath_format_hwerrors(hwerrs,
ipath_7220_hwerror_msgs,
ARRAY_SIZE(ipath_7220_hwerror_msgs),
msg, msgl);
if (hwerrs & (INFINIPATH_HWE_PCIEMEMPARITYERR_MASK
<< INFINIPATH_HWE_PCIEMEMPARITYERR_SHIFT)) {
bits = (u32) ((hwerrs >>
INFINIPATH_HWE_PCIEMEMPARITYERR_SHIFT) &
INFINIPATH_HWE_PCIEMEMPARITYERR_MASK);
snprintf(bitsmsg, sizeof bitsmsg,
"[PCIe Mem Parity Errs %x] ", bits);
strlcat(msg, bitsmsg, msgl);
}
#define _IPATH_PLL_FAIL (INFINIPATH_HWE_COREPLL_FBSLIP | \
INFINIPATH_HWE_COREPLL_RFSLIP)
if (hwerrs & _IPATH_PLL_FAIL) {
snprintf(bitsmsg, sizeof bitsmsg,
"[PLL failed (%llx), InfiniPath hardware unusable]",
(unsigned long long) hwerrs & _IPATH_PLL_FAIL);
strlcat(msg, bitsmsg, msgl);
/* ignore from now on, so disable until driver reloaded */
dd->ipath_hwerrmask &= ~(hwerrs & _IPATH_PLL_FAIL);
ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask,
dd->ipath_hwerrmask);
}
if (hwerrs & INFINIPATH_HWE_SERDESPLLFAILED) {
/*
* If it occurs, it is left masked since the eternal
* interface is unused.
*/
dd->ipath_hwerrmask &= ~INFINIPATH_HWE_SERDESPLLFAILED;
ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrmask,
dd->ipath_hwerrmask);
}
ipath_dev_err(dd, "%s hardware error\n", msg);
/*
* For /sys status file. if no trailing } is copied, we'll
* know it was truncated.
*/
if (isfatal && !ipath_diag_inuse && dd->ipath_freezemsg)
snprintf(dd->ipath_freezemsg, dd->ipath_freezelen,
"{%s}", msg);
bail:;
}
/**
* ipath_7220_boardname - fill in the board name
* @dd: the infinipath device
* @name: the output buffer
* @namelen: the size of the output buffer
*
* info is based on the board revision register
*/
static int ipath_7220_boardname(struct ipath_devdata *dd, char *name,
size_t namelen)
{
char *n = NULL;
u8 boardrev = dd->ipath_boardrev;
int ret;
if (boardrev == 15) {
/*
* Emulator sometimes comes up all-ones, rather than zero.
*/
boardrev = 0;
dd->ipath_boardrev = boardrev;
}
switch (boardrev) {
case 0:
n = "InfiniPath_7220_Emulation";
break;
case 1:
n = "InfiniPath_QLE7240";
break;
case 2:
n = "InfiniPath_QLE7280";
break;
case 3:
n = "InfiniPath_QLE7242";
break;
case 4:
n = "InfiniPath_QEM7240";
break;
case 5:
n = "InfiniPath_QMI7240";
break;
case 6:
n = "InfiniPath_QMI7264";
break;
case 7:
n = "InfiniPath_QMH7240";
break;
case 8:
n = "InfiniPath_QME7240";
break;
case 9:
n = "InfiniPath_QLE7250";
break;
case 10:
n = "InfiniPath_QLE7290";
break;
case 11:
n = "InfiniPath_QEM7250";
break;
case 12:
n = "InfiniPath_QLE-Bringup";
break;
default:
ipath_dev_err(dd,
"Don't yet know about board with ID %u\n",
boardrev);
snprintf(name, namelen, "Unknown_InfiniPath_PCIe_%u",
boardrev);
break;
}
if (n)
snprintf(name, namelen, "%s", n);
if (dd->ipath_majrev != 5 || !dd->ipath_minrev ||
dd->ipath_minrev > 2) {
ipath_dev_err(dd, "Unsupported InfiniPath hardware "
"revision %u.%u!\n",
dd->ipath_majrev, dd->ipath_minrev);
ret = 1;
} else if (dd->ipath_minrev == 1 &&
!(dd->ipath_flags & IPATH_INITTED)) {
/* Rev1 chips are prototype. Complain at init, but allow use */
ipath_dev_err(dd, "Unsupported hardware "
"revision %u.%u, Contact support@qlogic.com\n",
dd->ipath_majrev, dd->ipath_minrev);
ret = 0;
} else
ret = 0;
/*
* Set here not in ipath_init_*_funcs because we have to do
* it after we can read chip registers.
*/
dd->ipath_ureg_align = 0x10000; /* 64KB alignment */
return ret;
}
/**
* ipath_7220_init_hwerrors - enable hardware errors
* @dd: the infinipath 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 ipath_7220_init_hwerrors(struct ipath_devdata *dd)
{
ipath_err_t val;
u64 extsval;
extsval = ipath_read_kreg64(dd, dd->ipath_kregs->kr_extstatus);
if (!(extsval & (INFINIPATH_EXTS_MEMBIST_ENDTEST |
INFINIPATH_EXTS_MEMBIST_DISABLED)))
ipath_dev_err(dd, "MemBIST did not complete!\n");
if (extsval & INFINIPATH_EXTS_MEMBIST_DISABLED)
dev_info(&dd->pcidev->dev, "MemBIST is disabled.\n");
val = ~0ULL; /* barring bugs, all hwerrors become interrupts, */
if (!dd->ipath_boardrev) /* no PLL for Emulator */
val &= ~INFINIPATH_HWE_SERDESPLLFAILED;
if (dd->ipath_minrev == 1)
val &= ~(1ULL << 42); /* TXE LaunchFIFO Parity rev1 issue */
val &= ~INFINIPATH_HWE_IB_UC_MEMORYPARITYERR;
dd->ipath_hwerrmask = val;
/*
* special trigger "error" is for debugging purposes. It
* works around a processor/chipset problem. The error
* interrupt allows us to count occurrences, but we don't
* want to pay the overhead for normal use. Emulation only
*/
if (!dd->ipath_boardrev)
dd->ipath_maskederrs = INFINIPATH_E_SENDSPECIALTRIGGER;
}
/*
* All detailed interaction with the SerDes has been moved to ipath_sd7220.c
*
* The portion of IBA7220-specific bringup_serdes() that actually deals with
* registers and memory within the SerDes itself is ipath_sd7220_init().
*/
/**
* ipath_7220_bringup_serdes - bring up the serdes
* @dd: the infinipath device
*/
static int ipath_7220_bringup_serdes(struct ipath_devdata *dd)
{
int ret = 0;
u64 val, prev_val, guid;
int was_reset; /* Note whether uC was reset */
ipath_dbg("Trying to bringup serdes\n");
if (ipath_read_kreg64(dd, dd->ipath_kregs->kr_hwerrstatus) &
INFINIPATH_HWE_SERDESPLLFAILED) {
ipath_dbg("At start, serdes PLL failed bit set "
"in hwerrstatus, clearing and continuing\n");
ipath_write_kreg(dd, dd->ipath_kregs->kr_hwerrclear,
INFINIPATH_HWE_SERDESPLLFAILED);
}
if (!dd->ipath_ibcddrctrl) {
/* not on re-init after reset */
dd->ipath_ibcddrctrl =
ipath_read_kreg64(dd, dd->ipath_kregs->kr_ibcddrctrl);
if (dd->ipath_link_speed_enabled ==
(IPATH_IB_SDR | IPATH_IB_DDR))
dd->ipath_ibcddrctrl |=
IBA7220_IBC_SPEED_AUTONEG_MASK |
IBA7220_IBC_IBTA_1_2_MASK;
else
dd->ipath_ibcddrctrl |=
dd->ipath_link_speed_enabled == IPATH_IB_DDR
? IBA7220_IBC_SPEED_DDR :
IBA7220_IBC_SPEED_SDR;
if ((dd->ipath_link_width_enabled & (IB_WIDTH_1X |
IB_WIDTH_4X)) == (IB_WIDTH_1X | IB_WIDTH_4X))
dd->ipath_ibcddrctrl |= IBA7220_IBC_WIDTH_AUTONEG;
else
dd->ipath_ibcddrctrl |=
dd->ipath_link_width_enabled == IB_WIDTH_4X
? IBA7220_IBC_WIDTH_4X_ONLY :
IBA7220_IBC_WIDTH_1X_ONLY;
/* always enable these on driver reload, not sticky */
dd->ipath_ibcddrctrl |=
IBA7220_IBC_RXPOL_MASK << IBA7220_IBC_RXPOL_SHIFT;
dd->ipath_ibcddrctrl |=
IBA7220_IBC_HRTBT_MASK << IBA7220_IBC_HRTBT_SHIFT;
/*
* automatic lane reversal detection for receive
* doesn't work correctly in rev 1, so disable it
* on that rev, otherwise enable (disabling not
* sticky across reload for >rev1)
*/
if (dd->ipath_minrev == 1)
dd->ipath_ibcddrctrl &=
~IBA7220_IBC_LANE_REV_SUPPORTED;
else
dd->ipath_ibcddrctrl |=
IBA7220_IBC_LANE_REV_SUPPORTED;
}
ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcddrctrl,
dd->ipath_ibcddrctrl);
ipath_write_kreg(dd, IPATH_KREG_OFFSET(IBNCModeCtrl), 0Ull);
/* IBA7220 has SERDES MPU reset in D0 of what _was_ IBPLLCfg */
val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_ibserdesctrl);
/* remember if uC was in Reset or not, for dactrim */
was_reset = (val & 1);
ipath_cdbg(VERBOSE, "IBReset %s xgxsconfig %llx\n",
was_reset ? "Asserted" : "Negated", (unsigned long long)
ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig));
if (dd->ipath_boardrev) {
/*
* Hardware is not emulator, and may have been reset. Init it.
* Below will release reset, but needs to know if chip was
* originally in reset, to only trim DACs on first time
* after chip reset or powercycle (not driver reload)
*/
ret = ipath_sd7220_init(dd, was_reset);
}
val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig);
prev_val = val;
val |= INFINIPATH_XGXS_FC_SAFE;
if (val != prev_val) {
ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val);
ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
}
if (val & INFINIPATH_XGXS_RESET)
val &= ~INFINIPATH_XGXS_RESET;
if (val != prev_val)
ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val);
ipath_cdbg(VERBOSE, "done: xgxs=%llx from %llx\n",
(unsigned long long)
ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig),
prev_val);
guid = be64_to_cpu(dd->ipath_guid);
if (!guid) {
/* have to have something, so use likely unique tsc */
guid = get_cycles();
ipath_dbg("No GUID for heartbeat, faking %llx\n",
(unsigned long long)guid);
} else
ipath_cdbg(VERBOSE, "Wrote %llX to HRTBT_GUID\n", guid);
ipath_write_kreg(dd, dd->ipath_kregs->kr_hrtbt_guid, guid);
return ret;
}
static void ipath_7220_config_jint(struct ipath_devdata *dd,
u16 idle_ticks, u16 max_packets)
{
/*
* We can request a receive interrupt for 1 or more packets
* from current offset.
*/
if (idle_ticks == 0 || max_packets == 0)
/* interrupt after one packet if no mitigation */
dd->ipath_rhdrhead_intr_off =
1ULL << IBA7220_HDRHEAD_PKTINT_SHIFT;
else
/* Turn off RcvHdrHead interrupts if using mitigation */
dd->ipath_rhdrhead_intr_off = 0ULL;
/* refresh kernel RcvHdrHead registers... */
ipath_write_ureg(dd, ur_rcvhdrhead,
dd->ipath_rhdrhead_intr_off |
dd->ipath_pd[0]->port_head, 0);
dd->ipath_jint_max_packets = max_packets;
dd->ipath_jint_idle_ticks = idle_ticks;
ipath_write_kreg(dd, dd->ipath_kregs->kr_jintreload,
((u64) max_packets << INFINIPATH_JINT_PACKETSHIFT) |
idle_ticks);
}
/**
* ipath_7220_quiet_serdes - set serdes to txidle
* @dd: the infinipath device
* Called when driver is being unloaded
*/
static void ipath_7220_quiet_serdes(struct ipath_devdata *dd)
{
u64 val;
dd->ipath_flags &= ~IPATH_IB_AUTONEG_INPROG;
wake_up(&dd->ipath_autoneg_wait);
cancel_delayed_work(&dd->ipath_autoneg_work);
flush_scheduled_work();
ipath_shutdown_relock_poll(dd);
val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig);
val |= INFINIPATH_XGXS_RESET;
ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val);
}
static int ipath_7220_intconfig(struct ipath_devdata *dd)
{
ipath_7220_config_jint(dd, dd->ipath_jint_idle_ticks,
dd->ipath_jint_max_packets);
return 0;
}
/**
* ipath_setup_7220_setextled - set the state of the two external LEDs
* @dd: the infinipath device
* @lst: the L state
* @ltst: the LT state
*
* 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 ipath_setup_7220_setextled(struct ipath_devdata *dd, u64 lst,
u64 ltst)
{
u64 extctl, ledblink = 0;
unsigned long flags = 0;
/* the diags use the LED to indicate diag info, so we leave
* the external LED alone when the diags are running */
if (ipath_diag_inuse)
return;
/* Allow override of LED display for, e.g. Locating system in rack */
if (dd->ipath_led_override) {
ltst = (dd->ipath_led_override & IPATH_LED_PHYS)
? INFINIPATH_IBCS_LT_STATE_LINKUP
: INFINIPATH_IBCS_LT_STATE_DISABLED;
lst = (dd->ipath_led_override & IPATH_LED_LOG)
? INFINIPATH_IBCS_L_STATE_ACTIVE
: INFINIPATH_IBCS_L_STATE_DOWN;
}
spin_lock_irqsave(&dd->ipath_gpio_lock, flags);
extctl = dd->ipath_extctrl & ~(INFINIPATH_EXTC_LED1PRIPORT_ON |
INFINIPATH_EXTC_LED2PRIPORT_ON);
if (ltst == INFINIPATH_IBCS_LT_STATE_LINKUP) {
extctl |= INFINIPATH_EXTC_LED1PRIPORT_ON;
/*
* 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 == INFINIPATH_IBCS_L_STATE_ACTIVE)
extctl |= INFINIPATH_EXTC_LED2PRIPORT_ON;
dd->ipath_extctrl = extctl;
ipath_write_kreg(dd, dd->ipath_kregs->kr_extctrl, extctl);
spin_unlock_irqrestore(&dd->ipath_gpio_lock, flags);
if (ledblink) /* blink the LED on packet receive */
ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvpktledcnt,
ledblink);
}
/*
* Similar to pci_intx(pdev, 1), except that we make sure
* msi is off...
*/
static void ipath_enable_intx(struct pci_dev *pdev)
{
u16 cw, new;
int pos;
/* first, turn on INTx */
pci_read_config_word(pdev, PCI_COMMAND, &cw);
new = cw & ~PCI_COMMAND_INTX_DISABLE;
if (new != cw)
pci_write_config_word(pdev, PCI_COMMAND, new);
/* then turn off MSI */
pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
if (pos) {
pci_read_config_word(pdev, pos + PCI_MSI_FLAGS, &cw);
new = cw & ~PCI_MSI_FLAGS_ENABLE;
if (new != cw)
pci_write_config_word(pdev, pos + PCI_MSI_FLAGS, new);
}
}
static int ipath_msi_enabled(struct pci_dev *pdev)
{
int pos, ret = 0;
pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
if (pos) {
u16 cw;
pci_read_config_word(pdev, pos + PCI_MSI_FLAGS, &cw);
ret = !!(cw & PCI_MSI_FLAGS_ENABLE);
}
return ret;
}
/*
* disable msi interrupt if enabled, and clear the flag.
* flag is used primarily for the fallback to INTx, but
* is also used in reinit after reset as a flag.
*/
static void ipath_7220_nomsi(struct ipath_devdata *dd)
{
dd->ipath_msi_lo = 0;
if (ipath_msi_enabled(dd->pcidev)) {
/*
* free, but don't zero; later kernels require
* it be freed before disable_msi, so the intx
* setup has to request it again.
*/
if (dd->ipath_irq)
free_irq(dd->ipath_irq, dd);
pci_disable_msi(dd->pcidev);
}
}
/*
* ipath_setup_7220_cleanup - clean up any per-chip chip-specific stuff
* @dd: the infinipath device
*
* Nothing but msi interrupt cleanup for now.
*
* This is called during driver unload.
*/
static void ipath_setup_7220_cleanup(struct ipath_devdata *dd)
{
ipath_7220_nomsi(dd);
}
static void ipath_7220_pcie_params(struct ipath_devdata *dd, u32 boardrev)
{
u16 linkstat, minwidth, speed;
int pos;
pos = pci_find_capability(dd->pcidev, PCI_CAP_ID_EXP);
if (!pos) {
ipath_dev_err(dd, "Can't find PCI Express capability!\n");
goto bail;
}
pci_read_config_word(dd->pcidev, pos + PCI_EXP_LNKSTA,
&linkstat);
/*
* speed is bits 0-4, linkwidth is bits 4-8
* no defines for them in headers
*/
speed = linkstat & 0xf;
linkstat >>= 4;
linkstat &= 0x1f;
dd->ipath_lbus_width = linkstat;
switch (boardrev) {
case 0:
case 2:
case 10:
case 12:
minwidth = 16; /* x16 capable boards */
break;
default:
minwidth = 8; /* x8 capable boards */
break;
}
switch (speed) {
case 1:
dd->ipath_lbus_speed = 2500; /* Gen1, 2.5GHz */
break;
case 2:
dd->ipath_lbus_speed = 5000; /* Gen1, 5GHz */
break;
default: /* not defined, assume gen1 */
dd->ipath_lbus_speed = 2500;
break;
}
if (linkstat < minwidth)
ipath_dev_err(dd,
"PCIe width %u (x%u HCA), performance "
"reduced\n", linkstat, minwidth);
else
ipath_cdbg(VERBOSE, "PCIe speed %u width %u (x%u HCA)\n",
dd->ipath_lbus_speed, linkstat, minwidth);
if (speed != 1)
ipath_dev_err(dd,
"PCIe linkspeed %u is incorrect; "
"should be 1 (2500)!\n", speed);
bail:
/* fill in string, even on errors */
snprintf(dd->ipath_lbus_info, sizeof(dd->ipath_lbus_info),
"PCIe,%uMHz,x%u\n",
dd->ipath_lbus_speed,
dd->ipath_lbus_width);
return;
}
/**
* ipath_setup_7220_config - setup PCIe config related stuff
* @dd: the infinipath device
* @pdev: the PCI device
*
* The pci_enable_msi() call will fail on systems with MSI quirks
* such as those with AMD8131, even if the device of interest is not
* attached to that device, (in the 2.6.13 - 2.6.15 kernels, at least, fixed
* late in 2.6.16).
* All that can be done is to edit the kernel source to remove the quirk
* check until that is fixed.
* We do not need to call enable_msi() for our HyperTransport chip,
* even though it uses MSI, and we want to avoid the quirk warning, so
* So we call enable_msi only for PCIe. If we do end up needing
* pci_enable_msi at some point in the future for HT, we'll move the
* call back into the main init_one code.
* We save the msi lo and hi values, so we can restore them after
* chip reset (the kernel PCI infrastructure doesn't yet handle that
* correctly).
*/
static int ipath_setup_7220_config(struct ipath_devdata *dd,
struct pci_dev *pdev)
{
int pos, ret = -1;
u32 boardrev;
dd->ipath_msi_lo = 0; /* used as a flag during reset processing */
pos = pci_find_capability(pdev, PCI_CAP_ID_MSI);
if (!strcmp(int_type, "force_msi") || !strcmp(int_type, "auto"))
ret = pci_enable_msi(pdev);
if (ret) {
if (!strcmp(int_type, "force_msi")) {
ipath_dev_err(dd, "pci_enable_msi failed: %d, "
"force_msi is on, so not continuing.\n",
ret);
return ret;
}
ipath_enable_intx(pdev);
if (!strcmp(int_type, "auto"))
ipath_dev_err(dd, "pci_enable_msi failed: %d, "
"falling back to INTx\n", ret);
} else if (pos) {
u16 control;
pci_read_config_dword(pdev, pos + PCI_MSI_ADDRESS_LO,
&dd->ipath_msi_lo);
pci_read_config_dword(pdev, pos + PCI_MSI_ADDRESS_HI,
&dd->ipath_msi_hi);
pci_read_config_word(pdev, pos + PCI_MSI_FLAGS,
&control);
/* now save the data (vector) info */
pci_read_config_word(pdev,
pos + ((control & PCI_MSI_FLAGS_64BIT)
? PCI_MSI_DATA_64 :
PCI_MSI_DATA_32),
&dd->ipath_msi_data);
} else
ipath_dev_err(dd, "Can't find MSI capability, "
"can't save MSI settings for reset\n");
dd->ipath_irq = pdev->irq;
/*
* We save the cachelinesize also, although it doesn't
* really matter.
*/
pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE,
&dd->ipath_pci_cacheline);
/*
* this function called early, ipath_boardrev not set yet. Can't
* use ipath_read_kreg64() yet, too early in init, so use readq()
*/
boardrev = (readq(&dd->ipath_kregbase[dd->ipath_kregs->kr_revision])
>> INFINIPATH_R_BOARDID_SHIFT) & INFINIPATH_R_BOARDID_MASK;
ipath_7220_pcie_params(dd, boardrev);
dd->ipath_flags |= IPATH_NODMA_RTAIL | IPATH_HAS_SEND_DMA |
IPATH_HAS_PBC_CNT | IPATH_HAS_THRESH_UPDATE;
dd->ipath_pioupd_thresh = 4U; /* set default update threshold */
return 0;
}
static void ipath_init_7220_variables(struct ipath_devdata *dd)
{
/*
* setup the register offsets, since they are different for each
* chip
*/
dd->ipath_kregs = &ipath_7220_kregs;
dd->ipath_cregs = &ipath_7220_cregs;
/*
* bits for selecting i2c direction and values,
* used for I2C serial flash
*/
dd->ipath_gpio_sda_num = _IPATH_GPIO_SDA_NUM;
dd->ipath_gpio_scl_num = _IPATH_GPIO_SCL_NUM;
dd->ipath_gpio_sda = IPATH_GPIO_SDA;
dd->ipath_gpio_scl = IPATH_GPIO_SCL;
/*
* Fill in data for field-values that change in IBA7220.
* We dynamically specify only the mask for LINKTRAININGSTATE
* and only the shift for LINKSTATE, as they are the only ones
* that change. Also precalculate the 3 link states of interest
* and the combined mask.
*/
dd->ibcs_ls_shift = IBA7220_IBCS_LINKSTATE_SHIFT;
dd->ibcs_lts_mask = IBA7220_IBCS_LINKTRAININGSTATE_MASK;
dd->ibcs_mask = (INFINIPATH_IBCS_LINKSTATE_MASK <<
dd->ibcs_ls_shift) | dd->ibcs_lts_mask;
dd->ib_init = (INFINIPATH_IBCS_LT_STATE_LINKUP <<
INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) |
(INFINIPATH_IBCS_L_STATE_INIT << dd->ibcs_ls_shift);
dd->ib_arm = (INFINIPATH_IBCS_LT_STATE_LINKUP <<
INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) |
(INFINIPATH_IBCS_L_STATE_ARM << dd->ibcs_ls_shift);
dd->ib_active = (INFINIPATH_IBCS_LT_STATE_LINKUP <<
INFINIPATH_IBCS_LINKTRAININGSTATE_SHIFT) |
(INFINIPATH_IBCS_L_STATE_ACTIVE << dd->ibcs_ls_shift);
/*
* Fill in data for ibcc field-values that change in IBA7220.
* We dynamically specify only the mask for LINKINITCMD
* and only the shift for LINKCMD and MAXPKTLEN, as they are
* the only ones that change.
*/
dd->ibcc_lic_mask = IBA7220_IBCC_LINKINITCMD_MASK;
dd->ibcc_lc_shift = IBA7220_IBCC_LINKCMD_SHIFT;
dd->ibcc_mpl_shift = IBA7220_IBCC_MAXPKTLEN_SHIFT;
/* Fill in shifts for RcvCtrl. */
dd->ipath_r_portenable_shift = INFINIPATH_R_PORTENABLE_SHIFT;
dd->ipath_r_intravail_shift = IBA7220_R_INTRAVAIL_SHIFT;
dd->ipath_r_tailupd_shift = IBA7220_R_TAILUPD_SHIFT;
dd->ipath_r_portcfg_shift = IBA7220_R_PORTCFG_SHIFT;
/* variables for sanity checking interrupt and errors */
dd->ipath_hwe_bitsextant =
(INFINIPATH_HWE_RXEMEMPARITYERR_MASK <<
INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT) |
(INFINIPATH_HWE_TXEMEMPARITYERR_MASK <<
INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT) |
(INFINIPATH_HWE_PCIEMEMPARITYERR_MASK <<
INFINIPATH_HWE_PCIEMEMPARITYERR_SHIFT) |
INFINIPATH_HWE_PCIE1PLLFAILED |
INFINIPATH_HWE_PCIE0PLLFAILED |
INFINIPATH_HWE_PCIEPOISONEDTLP |
INFINIPATH_HWE_PCIECPLTIMEOUT |
INFINIPATH_HWE_PCIEBUSPARITYXTLH |
INFINIPATH_HWE_PCIEBUSPARITYXADM |
INFINIPATH_HWE_PCIEBUSPARITYRADM |
INFINIPATH_HWE_MEMBISTFAILED |
INFINIPATH_HWE_COREPLL_FBSLIP |
INFINIPATH_HWE_COREPLL_RFSLIP |
INFINIPATH_HWE_SERDESPLLFAILED |
INFINIPATH_HWE_IBCBUSTOSPCPARITYERR |
INFINIPATH_HWE_IBCBUSFRSPCPARITYERR |
INFINIPATH_HWE_PCIECPLDATAQUEUEERR |
INFINIPATH_HWE_PCIECPLHDRQUEUEERR |
INFINIPATH_HWE_SDMAMEMREADERR |
INFINIPATH_HWE_CLK_UC_PLLNOTLOCKED |
INFINIPATH_HWE_PCIESERDESQ0PCLKNOTDETECT |
INFINIPATH_HWE_PCIESERDESQ1PCLKNOTDETECT |
INFINIPATH_HWE_PCIESERDESQ2PCLKNOTDETECT |
INFINIPATH_HWE_PCIESERDESQ3PCLKNOTDETECT |
INFINIPATH_HWE_DDSRXEQMEMORYPARITYERR |
INFINIPATH_HWE_IB_UC_MEMORYPARITYERR |
INFINIPATH_HWE_PCIE_UC_OCT0MEMORYPARITYERR |
INFINIPATH_HWE_PCIE_UC_OCT1MEMORYPARITYERR;
dd->ipath_i_bitsextant =
INFINIPATH_I_SDMAINT | INFINIPATH_I_SDMADISABLED |
(INFINIPATH_I_RCVURG_MASK << INFINIPATH_I_RCVURG_SHIFT) |
(INFINIPATH_I_RCVAVAIL_MASK <<
INFINIPATH_I_RCVAVAIL_SHIFT) |
INFINIPATH_I_ERROR | INFINIPATH_I_SPIOSENT |
INFINIPATH_I_SPIOBUFAVAIL | INFINIPATH_I_GPIO |
INFINIPATH_I_JINT | INFINIPATH_I_SERDESTRIMDONE;
dd->ipath_e_bitsextant =
INFINIPATH_E_RFORMATERR | INFINIPATH_E_RVCRC |
INFINIPATH_E_RICRC | INFINIPATH_E_RMINPKTLEN |
INFINIPATH_E_RMAXPKTLEN | INFINIPATH_E_RLONGPKTLEN |
INFINIPATH_E_RSHORTPKTLEN | INFINIPATH_E_RUNEXPCHAR |
INFINIPATH_E_RUNSUPVL | INFINIPATH_E_REBP |
INFINIPATH_E_RIBFLOW | INFINIPATH_E_RBADVERSION |
INFINIPATH_E_RRCVEGRFULL | INFINIPATH_E_RRCVHDRFULL |
INFINIPATH_E_RBADTID | INFINIPATH_E_RHDRLEN |
INFINIPATH_E_RHDR | INFINIPATH_E_RIBLOSTLINK |
INFINIPATH_E_SENDSPECIALTRIGGER |
INFINIPATH_E_SDMADISABLED | INFINIPATH_E_SMINPKTLEN |
INFINIPATH_E_SMAXPKTLEN | INFINIPATH_E_SUNDERRUN |
INFINIPATH_E_SPKTLEN | INFINIPATH_E_SDROPPEDSMPPKT |
INFINIPATH_E_SDROPPEDDATAPKT |
INFINIPATH_E_SPIOARMLAUNCH | INFINIPATH_E_SUNEXPERRPKTNUM |
INFINIPATH_E_SUNSUPVL | INFINIPATH_E_SENDBUFMISUSE |
INFINIPATH_E_SDMAGENMISMATCH | INFINIPATH_E_SDMAOUTOFBOUND |
INFINIPATH_E_SDMATAILOUTOFBOUND | INFINIPATH_E_SDMABASE |
INFINIPATH_E_SDMA1STDESC | INFINIPATH_E_SDMARPYTAG |
INFINIPATH_E_SDMADWEN | INFINIPATH_E_SDMAMISSINGDW |
INFINIPATH_E_SDMAUNEXPDATA |
INFINIPATH_E_IBSTATUSCHANGED | INFINIPATH_E_INVALIDADDR |
INFINIPATH_E_RESET | INFINIPATH_E_HARDWARE |
INFINIPATH_E_SDMADESCADDRMISALIGN |
INFINIPATH_E_INVALIDEEPCMD;
dd->ipath_i_rcvavail_mask = INFINIPATH_I_RCVAVAIL_MASK;
dd->ipath_i_rcvurg_mask = INFINIPATH_I_RCVURG_MASK;
dd->ipath_i_rcvavail_shift = INFINIPATH_I_RCVAVAIL_SHIFT;
dd->ipath_i_rcvurg_shift = INFINIPATH_I_RCVURG_SHIFT;
dd->ipath_flags |= IPATH_INTREG_64 | IPATH_HAS_MULT_IB_SPEED
| IPATH_HAS_LINK_LATENCY;
/*
* EEPROM error log 0 is TXE Parity errors. 1 is RXE Parity.
* 2 is Some Misc, 3 is reserved for future.
*/
dd->ipath_eep_st_masks[0].hwerrs_to_log =
INFINIPATH_HWE_TXEMEMPARITYERR_MASK <<
INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT;
dd->ipath_eep_st_masks[1].hwerrs_to_log =
INFINIPATH_HWE_RXEMEMPARITYERR_MASK <<
INFINIPATH_HWE_RXEMEMPARITYERR_SHIFT;
dd->ipath_eep_st_masks[2].errs_to_log = INFINIPATH_E_RESET;
ipath_linkrecovery = 0;
init_waitqueue_head(&dd->ipath_autoneg_wait);
INIT_DELAYED_WORK(&dd->ipath_autoneg_work, autoneg_work);
dd->ipath_link_width_supported = IB_WIDTH_1X | IB_WIDTH_4X;
dd->ipath_link_speed_supported = IPATH_IB_SDR | IPATH_IB_DDR;
dd->ipath_link_width_enabled = dd->ipath_link_width_supported;
dd->ipath_link_speed_enabled = dd->ipath_link_speed_supported;
/*
* set the initial values to reasonable default, will be set
* for real when link is up.
*/
dd->ipath_link_width_active = IB_WIDTH_4X;
dd->ipath_link_speed_active = IPATH_IB_SDR;
dd->delay_mult = rate_to_delay[0][1];
}
/*
* Setup the MSI stuff again after a reset. I'd like to just call
* pci_enable_msi() and request_irq() again, but when I do that,
* the MSI enable bit doesn't get set in the command word, and
* we switch to to a different interrupt vector, which is confusing,
* so I instead just do it all inline. Perhaps somehow can tie this
* into the PCIe hotplug support at some point
* Note, because I'm doing it all here, I don't call pci_disable_msi()
* or free_irq() at the start of ipath_setup_7220_reset().
*/
static int ipath_reinit_msi(struct ipath_devdata *dd)
{
int ret = 0;
int pos;
u16 control;
if (!dd->ipath_msi_lo) /* Using intX, or init problem */
goto bail;
pos = pci_find_capability(dd->pcidev, PCI_CAP_ID_MSI);
if (!pos) {
ipath_dev_err(dd, "Can't find MSI capability, "
"can't restore MSI settings\n");
goto bail;
}
ipath_cdbg(VERBOSE, "Writing msi_lo 0x%x to config offset 0x%x\n",
dd->ipath_msi_lo, pos + PCI_MSI_ADDRESS_LO);
pci_write_config_dword(dd->pcidev, pos + PCI_MSI_ADDRESS_LO,
dd->ipath_msi_lo);
ipath_cdbg(VERBOSE, "Writing msi_lo 0x%x to config offset 0x%x\n",
dd->ipath_msi_hi, pos + PCI_MSI_ADDRESS_HI);
pci_write_config_dword(dd->pcidev, pos + PCI_MSI_ADDRESS_HI,
dd->ipath_msi_hi);
pci_read_config_word(dd->pcidev, pos + PCI_MSI_FLAGS, &control);
if (!(control & PCI_MSI_FLAGS_ENABLE)) {
ipath_cdbg(VERBOSE, "MSI control at off %x was %x, "
"setting MSI enable (%x)\n", pos + PCI_MSI_FLAGS,
control, control | PCI_MSI_FLAGS_ENABLE);
control |= PCI_MSI_FLAGS_ENABLE;
pci_write_config_word(dd->pcidev, pos + PCI_MSI_FLAGS,
control);
}
/* now rewrite the data (vector) info */
pci_write_config_word(dd->pcidev, pos +
((control & PCI_MSI_FLAGS_64BIT) ? 12 : 8),
dd->ipath_msi_data);
ret = 1;
bail:
if (!ret) {
ipath_dbg("Using INTx, MSI disabled or not configured\n");
ipath_enable_intx(dd->pcidev);
ret = 1;
}
/*
* We restore the cachelinesize also, although it doesn't really
* matter.
*/
pci_write_config_byte(dd->pcidev, PCI_CACHE_LINE_SIZE,
dd->ipath_pci_cacheline);
/* and now set the pci master bit again */
pci_set_master(dd->pcidev);
return ret;
}
/*
* This routine sleeps, so it can only be called from user context, not
* from interrupt context. If we need interrupt context, we can split
* it into two routines.
*/
static int ipath_setup_7220_reset(struct ipath_devdata *dd)
{
u64 val;
int i;
int ret;
u16 cmdval;
pci_read_config_word(dd->pcidev, PCI_COMMAND, &cmdval);
/* Use dev_err so it shows up in logs, etc. */
ipath_dev_err(dd, "Resetting InfiniPath unit %u\n", dd->ipath_unit);
/* keep chip from being accessed in a few places */
dd->ipath_flags &= ~(IPATH_INITTED | IPATH_PRESENT);
val = dd->ipath_control | INFINIPATH_C_RESET;
ipath_write_kreg(dd, dd->ipath_kregs->kr_control, val);
mb();
for (i = 1; i <= 5; i++) {
int r;
/*
* 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);
r = pci_write_config_dword(dd->pcidev, PCI_BASE_ADDRESS_0,
dd->ipath_pcibar0);
if (r)
ipath_dev_err(dd, "rewrite of BAR0 failed: %d\n", r);
r = pci_write_config_dword(dd->pcidev, PCI_BASE_ADDRESS_1,
dd->ipath_pcibar1);
if (r)
ipath_dev_err(dd, "rewrite of BAR1 failed: %d\n", r);
/* now re-enable memory access */
pci_write_config_word(dd->pcidev, PCI_COMMAND, cmdval);
r = pci_enable_device(dd->pcidev);
if (r)
ipath_dev_err(dd, "pci_enable_device failed after "
"reset: %d\n", r);
/*
* whether it fully enabled or not, mark as present,
* again (but not INITTED)
*/
dd->ipath_flags |= IPATH_PRESENT;
val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_revision);
if (val == dd->ipath_revision) {
ipath_cdbg(VERBOSE, "Got matching revision "
"register %llx on try %d\n",
(unsigned long long) val, i);
ret = ipath_reinit_msi(dd);
goto bail;
}
/* Probably getting -1 back */
ipath_dbg("Didn't get expected revision register, "
"got %llx, try %d\n", (unsigned long long) val,
i + 1);
}
ret = 0; /* failed */
bail:
if (ret)
ipath_7220_pcie_params(dd, dd->ipath_boardrev);
return ret;
}
/**
* ipath_7220_put_tid - write a TID to the chip
* @dd: the infinipath device
* @tidptr: pointer to the expected TID (in chip) to udpate
* @tidtype: 0 for eager, 1 for expected
* @pa: physical address of in memory buffer; ipath_tidinvalid if freeing
*
* This exists as a separate routine to allow for selection of the
* appropriate "flavor". The static calls in cleanup just use the
* revision-agnostic form, as they are not performance critical.
*/
static void ipath_7220_put_tid(struct ipath_devdata *dd, u64 __iomem *tidptr,
u32 type, unsigned long pa)
{
if (pa != dd->ipath_tidinvalid) {
u64 chippa = pa >> IBA7220_TID_PA_SHIFT;
/* paranoia checks */
if (pa != (chippa << IBA7220_TID_PA_SHIFT)) {
dev_info(&dd->pcidev->dev, "BUG: physaddr %lx "
"not 2KB aligned!\n", pa);
return;
}
if (pa >= (1UL << IBA7220_TID_SZ_SHIFT)) {
ipath_dev_err(dd,
"BUG: Physical page address 0x%lx "
"larger than supported\n", pa);
return;
}
if (type == RCVHQ_RCV_TYPE_EAGER)
chippa |= dd->ipath_tidtemplate;
else /* for now, always full 4KB page */
chippa |= IBA7220_TID_SZ_4K;
writeq(chippa, tidptr);
} else
writeq(pa, tidptr);
mmiowb();
}
/**
* ipath_7220_clear_tid - clear all TID entries for a port, expected and eager
* @dd: the infinipath device
* @port: the port
*
* clear all TID entries for a port, expected and eager.
* Used from ipath_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 ipath_7220_clear_tids(struct ipath_devdata *dd, unsigned port)
{
u64 __iomem *tidbase;
unsigned long tidinv;
int i;
if (!dd->ipath_kregbase)
return;
ipath_cdbg(VERBOSE, "Invalidate TIDs for port %u\n", port);
tidinv = dd->ipath_tidinvalid;
tidbase = (u64 __iomem *)
((char __iomem *)(dd->ipath_kregbase) +
dd->ipath_rcvtidbase +
port * dd->ipath_rcvtidcnt * sizeof(*tidbase));
for (i = 0; i < dd->ipath_rcvtidcnt; i++)
ipath_7220_put_tid(dd, &tidbase[i], RCVHQ_RCV_TYPE_EXPECTED,
tidinv);
tidbase = (u64 __iomem *)
((char __iomem *)(dd->ipath_kregbase) +
dd->ipath_rcvegrbase + port_egrtid_idx(dd, port)
* sizeof(*tidbase));
for (i = port ? dd->ipath_rcvegrcnt : dd->ipath_p0_rcvegrcnt; i; i--)
ipath_7220_put_tid(dd, &tidbase[i-1], RCVHQ_RCV_TYPE_EAGER,
tidinv);
}
/**
* ipath_7220_tidtemplate - setup constants for TID updates
* @dd: the infinipath device
*
* We setup stuff that we use a lot, to avoid calculating each time
*/
static void ipath_7220_tidtemplate(struct ipath_devdata *dd)
{
/* For now, we always allocate 4KB buffers (at init) so we can
* receive max size packets. We may want a module parameter to
* specify 2KB or 4KB and/or make be per port instead of per device
* for those who want to reduce memory footprint. Note that the
* ipath_rcvhdrentsize size must be large enough to hold the largest
* IB header (currently 96 bytes) that we expect to handle (plus of
* course the 2 dwords of RHF).
*/
if (dd->ipath_rcvegrbufsize == 2048)
dd->ipath_tidtemplate = IBA7220_TID_SZ_2K;
else if (dd->ipath_rcvegrbufsize == 4096)
dd->ipath_tidtemplate = IBA7220_TID_SZ_4K;
else {
dev_info(&dd->pcidev->dev, "BUG: unsupported egrbufsize "
"%u, using %u\n", dd->ipath_rcvegrbufsize,
4096);
dd->ipath_tidtemplate = IBA7220_TID_SZ_4K;
}
dd->ipath_tidinvalid = 0;
}
static int ipath_7220_early_init(struct ipath_devdata *dd)
{
u32 i, s;
if (strcmp(int_type, "auto") &&
strcmp(int_type, "force_msi") &&
strcmp(int_type, "force_intx")) {
ipath_dev_err(dd, "Invalid interrupt_type: '%s', expecting "
"auto, force_msi or force_intx\n", int_type);
return -EINVAL;
}
/*
* Control[4] has been added to change the arbitration within
* the SDMA engine between favoring data fetches over descriptor
* fetches. ipath_sdma_fetch_arb==0 gives data fetches priority.
*/
if (ipath_sdma_fetch_arb && (dd->ipath_minrev > 1))
dd->ipath_control |= 1<<4;
dd->ipath_flags |= IPATH_4BYTE_TID;
/*
* For openfabrics, we need to be able to handle an IB header of
* 24 dwords. HT chip has arbitrary sized receive buffers, so we
* made them the same size as the PIO buffers. This chip does not
* handle arbitrary size buffers, so we need the header large enough
* to handle largest IB header, but still have room for a 2KB MTU
* standard IB packet.
*/
dd->ipath_rcvhdrentsize = 24;
dd->ipath_rcvhdrsize = IPATH_DFLT_RCVHDRSIZE;
dd->ipath_rhf_offset =
dd->ipath_rcvhdrentsize - sizeof(u64) / sizeof(u32);
dd->ipath_rcvegrbufsize = ipath_mtu4096 ? 4096 : 2048;
/*
* the min() check here is currently a nop, but it may not always
* be, depending on just how we do ipath_rcvegrbufsize
*/
dd->ipath_ibmaxlen = min(ipath_mtu4096 ? dd->ipath_piosize4k :
dd->ipath_piosize2k,
dd->ipath_rcvegrbufsize +
(dd->ipath_rcvhdrentsize << 2));
dd->ipath_init_ibmaxlen = dd->ipath_ibmaxlen;
ipath_7220_config_jint(dd, INFINIPATH_JINT_DEFAULT_IDLE_TICKS,
INFINIPATH_JINT_DEFAULT_MAX_PACKETS);
if (dd->ipath_boardrev) /* no eeprom on emulator */
ipath_get_eeprom_info(dd);
/* start of code to check and print procmon */
s = ipath_read_kreg32(dd, IPATH_KREG_OFFSET(ProcMon));
s &= ~(1U<<31); /* clear done bit */
s |= 1U<<14; /* clear counter (write 1 to clear) */
ipath_write_kreg(dd, IPATH_KREG_OFFSET(ProcMon), s);
/* make sure clear_counter low long enough before start */
ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
s &= ~(1U<<14); /* allow counter to count (before starting) */
ipath_write_kreg(dd, IPATH_KREG_OFFSET(ProcMon), s);
ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
s = ipath_read_kreg32(dd, IPATH_KREG_OFFSET(ProcMon));
s |= 1U<<15; /* start the counter */
s &= ~(1U<<31); /* clear done bit */
s &= ~0x7ffU; /* clear frequency bits */
s |= 0xe29; /* set frequency bits, in case cleared */
ipath_write_kreg(dd, IPATH_KREG_OFFSET(ProcMon), s);
s = 0;
for (i = 500; i > 0 && !(s&(1ULL<<31)); i--) {
ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
s = ipath_read_kreg32(dd, IPATH_KREG_OFFSET(ProcMon));
}
if (!(s&(1U<<31)))
ipath_dev_err(dd, "ProcMon register not valid: 0x%x\n", s);
else
ipath_dbg("ProcMon=0x%x, count=0x%x\n", s, (s>>16)&0x1ff);
return 0;
}
/**
* ipath_init_7220_get_base_info - set chip-specific flags for user code
* @pd: the infinipath port
* @kbase: ipath_base_info pointer
*
* We set the PCIE flag because the lower bandwidth on PCIe vs
* HyperTransport can affect some user packet algorithims.
*/
static int ipath_7220_get_base_info(struct ipath_portdata *pd, void *kbase)
{
struct ipath_base_info *kinfo = kbase;
kinfo->spi_runtime_flags |=
IPATH_RUNTIME_PCIE | IPATH_RUNTIME_NODMA_RTAIL |
IPATH_RUNTIME_SDMA;
return 0;
}
static void ipath_7220_free_irq(struct ipath_devdata *dd)
{
free_irq(dd->ipath_irq, dd);
dd->ipath_irq = 0;
}
static struct ipath_message_header *
ipath_7220_get_msgheader(struct ipath_devdata *dd, __le32 *rhf_addr)
{
u32 offset = ipath_hdrget_offset(rhf_addr);
return (struct ipath_message_header *)
(rhf_addr - dd->ipath_rhf_offset + offset);
}
static void ipath_7220_config_ports(struct ipath_devdata *dd, ushort cfgports)
{
u32 nchipports;
nchipports = ipath_read_kreg32(dd, dd->ipath_kregs->kr_portcnt);
if (!cfgports) {
int ncpus = num_online_cpus();
if (ncpus <= 4)
dd->ipath_portcnt = 5;
else if (ncpus <= 8)
dd->ipath_portcnt = 9;
if (dd->ipath_portcnt)
ipath_dbg("Auto-configured for %u ports, %d cpus "
"online\n", dd->ipath_portcnt, ncpus);
} else if (cfgports <= nchipports)
dd->ipath_portcnt = cfgports;
if (!dd->ipath_portcnt) /* none of the above, set to max */
dd->ipath_portcnt = nchipports;
/*
* chip can be configured for 5, 9, or 17 ports, and choice
* affects number of eager TIDs per port (1K, 2K, 4K).
*/
if (dd->ipath_portcnt > 9)
dd->ipath_rcvctrl |= 2ULL << IBA7220_R_PORTCFG_SHIFT;
else if (dd->ipath_portcnt > 5)
dd->ipath_rcvctrl |= 1ULL << IBA7220_R_PORTCFG_SHIFT;
/* else configure for default 5 receive ports */
ipath_write_kreg(dd, dd->ipath_kregs->kr_rcvctrl,
dd->ipath_rcvctrl);
dd->ipath_p0_rcvegrcnt = 2048; /* always */
if (dd->ipath_flags & IPATH_HAS_SEND_DMA)
dd->ipath_pioreserved = 3; /* kpiobufs used for PIO */
}
static int ipath_7220_get_ib_cfg(struct ipath_devdata *dd, int which)
{
int lsb, ret = 0;
u64 maskr; /* right-justified mask */
switch (which) {
case IPATH_IB_CFG_HRTBT: /* Get Heartbeat off/enable/auto */
lsb = IBA7220_IBC_HRTBT_SHIFT;
maskr = IBA7220_IBC_HRTBT_MASK;
break;
case IPATH_IB_CFG_LWID_ENB: /* Get allowed Link-width */
ret = dd->ipath_link_width_enabled;
goto done;
case IPATH_IB_CFG_LWID: /* Get currently active Link-width */
ret = dd->ipath_link_width_active;
goto done;
case IPATH_IB_CFG_SPD_ENB: /* Get allowed Link speeds */
ret = dd->ipath_link_speed_enabled;
goto done;
case IPATH_IB_CFG_SPD: /* Get current Link spd */
ret = dd->ipath_link_speed_active;
goto done;
case IPATH_IB_CFG_RXPOL_ENB: /* Get Auto-RX-polarity enable */
lsb = IBA7220_IBC_RXPOL_SHIFT;
maskr = IBA7220_IBC_RXPOL_MASK;
break;
case IPATH_IB_CFG_LREV_ENB: /* Get Auto-Lane-reversal enable */
lsb = IBA7220_IBC_LREV_SHIFT;
maskr = IBA7220_IBC_LREV_MASK;
break;
case IPATH_IB_CFG_LINKLATENCY:
ret = ipath_read_kreg64(dd, dd->ipath_kregs->kr_ibcddrstatus)
& IBA7220_DDRSTAT_LINKLAT_MASK;
goto done;
default:
ret = -ENOTSUPP;
goto done;
}
ret = (int)((dd->ipath_ibcddrctrl >> lsb) & maskr);
done:
return ret;
}
static int ipath_7220_set_ib_cfg(struct ipath_devdata *dd, int which, u32 val)
{
int lsb, ret = 0, setforce = 0;
u64 maskr; /* right-justified mask */
switch (which) {
case IPATH_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 IPATH_IB_CFG_HRTBT: /* set Heartbeat off/enable/auto */
if (val & IPATH_IB_HRTBT_ON &&
(dd->ipath_flags & IPATH_NO_HRTBT))
goto bail;
lsb = IBA7220_IBC_HRTBT_SHIFT;
maskr = IBA7220_IBC_HRTBT_MASK;
break;
case IPATH_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.
*/
dd->ipath_link_width_enabled = val;
if ((dd->ipath_flags & (IPATH_LINKDOWN|IPATH_LINKINIT)) !=
IPATH_LINKDOWN)
goto bail;
/*
* We set the IPATH_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;
dd->ipath_flags |= IPATH_IB_FORCE_NOTIFY;
break;
case IPATH_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
* explictly requested (via MAD or sysfs), clear autoneg
* failure status if speed autoneg is enabled.
*/
dd->ipath_link_speed_enabled = val;
if (dd->ipath_ibcddrctrl & IBA7220_IBC_IBTA_1_2_MASK &&
!(val & (val - 1)))
dd->ipath_presets_needed = 1;
if ((dd->ipath_flags & (IPATH_LINKDOWN|IPATH_LINKINIT)) !=
IPATH_LINKDOWN)
goto bail;
/*
* We set the IPATH_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. When setting
* speed autoneg, clear AUTONEG_FAILED.
*/
if (val == (IPATH_IB_SDR | IPATH_IB_DDR)) {
val = IBA7220_IBC_SPEED_AUTONEG_MASK |
IBA7220_IBC_IBTA_1_2_MASK;
dd->ipath_flags &= ~IPATH_IB_AUTONEG_FAILED;
} else
val = val == IPATH_IB_DDR ? IBA7220_IBC_SPEED_DDR
: IBA7220_IBC_SPEED_SDR;
maskr = IBA7220_IBC_SPEED_AUTONEG_MASK |
IBA7220_IBC_IBTA_1_2_MASK;
lsb = 0; /* speed bits are low bits */
setforce = 1;
break;
case IPATH_IB_CFG_RXPOL_ENB: /* set Auto-RX-polarity enable */
lsb = IBA7220_IBC_RXPOL_SHIFT;
maskr = IBA7220_IBC_RXPOL_MASK;
break;
case IPATH_IB_CFG_LREV_ENB: /* set Auto-Lane-reversal enable */
lsb = IBA7220_IBC_LREV_SHIFT;
maskr = IBA7220_IBC_LREV_MASK;
break;
default:
ret = -ENOTSUPP;
goto bail;
}
dd->ipath_ibcddrctrl &= ~(maskr << lsb);
dd->ipath_ibcddrctrl |= (((u64) val & maskr) << lsb);
ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcddrctrl,
dd->ipath_ibcddrctrl);
if (setforce)
dd->ipath_flags |= IPATH_IB_FORCE_NOTIFY;
bail:
return ret;
}
static void ipath_7220_read_counters(struct ipath_devdata *dd,
struct infinipath_counters *cntrs)
{
u64 *counters = (u64 *) cntrs;
int i;
for (i = 0; i < sizeof(*cntrs) / sizeof(u64); i++)
counters[i] = ipath_snap_cntr(dd, i);
}
/* if we are using MSI, try to fallback to INTx */
static int ipath_7220_intr_fallback(struct ipath_devdata *dd)
{
if (dd->ipath_msi_lo) {
dev_info(&dd->pcidev->dev, "MSI interrupt not detected,"
" trying INTx interrupts\n");
ipath_7220_nomsi(dd);
ipath_enable_intx(dd->pcidev);
/*
* some newer kernels require free_irq before disable_msi,
* and irq can be changed during disable and intx enable
* and we need to therefore use the pcidev->irq value,
* not our saved MSI value.
*/
dd->ipath_irq = dd->pcidev->irq;
if (request_irq(dd->ipath_irq, ipath_intr, IRQF_SHARED,
IPATH_DRV_NAME, dd))
ipath_dev_err(dd,
"Could not re-request_irq for INTx\n");
return 1;
}
return 0;
}
/*
* 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 ipath_7220_xgxs_reset(struct ipath_devdata *dd)
{
u64 val, prev_val;
prev_val = ipath_read_kreg64(dd, dd->ipath_kregs->kr_xgxsconfig);
val = prev_val | INFINIPATH_XGXS_RESET;
prev_val &= ~INFINIPATH_XGXS_RESET; /* be sure */
ipath_write_kreg(dd, dd->ipath_kregs->kr_control,
dd->ipath_control & ~INFINIPATH_C_LINKENABLE);
ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, val);
ipath_read_kreg32(dd, dd->ipath_kregs->kr_scratch);
ipath_write_kreg(dd, dd->ipath_kregs->kr_xgxsconfig, prev_val);
ipath_write_kreg(dd, dd->ipath_kregs->kr_control,
dd->ipath_control);
}
/* Still needs cleanup, too much hardwired stuff */
static void autoneg_send(struct ipath_devdata *dd,
u32 *hdr, u32 dcnt, u32 *data)
{
int i;
u64 cnt;
u32 __iomem *piobuf;
u32 pnum;
i = 0;
cnt = 7 + dcnt + 1; /* 7 dword header, dword data, icrc */
while (!(piobuf = ipath_getpiobuf(dd, cnt, &pnum))) {
if (i++ > 15) {
ipath_dbg("Couldn't get pio buffer for send\n");
return;
}
udelay(2);
}
if (dd->ipath_flags&IPATH_HAS_PBC_CNT)
cnt |= 0x80000000UL<<32; /* mark as VL15 */
writeq(cnt, piobuf);
ipath_flush_wc();
__iowrite32_copy(piobuf + 2, hdr, 7);
__iowrite32_copy(piobuf + 9, data, dcnt);
ipath_flush_wc();
}
/*
* _start packet gets sent twice at start, _done gets sent twice at end
*/
static void ipath_autoneg_send(struct ipath_devdata *dd, int which)
{
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 = sizeof(madpayload_start)/sizeof(madpayload_start[0]);
hcnt = sizeof(hdr)/sizeof(hdr[0]);
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;
ipath_cdbg(PKT, "Sending %s special MADs\n", which?"done":"start");
autoneg_send(dd, hdr, dcnt, data);
ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch);
udelay(2);
autoneg_send(dd, hdr, dcnt, data);
ipath_read_kreg64(dd, dd->ipath_kregs->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_speed_fast(struct ipath_devdata *dd, u32 speed)
{
dd->ipath_ibcddrctrl &= ~(IBA7220_IBC_SPEED_AUTONEG_MASK |
IBA7220_IBC_IBTA_1_2_MASK |
(IBA7220_IBC_WIDTH_MASK << IBA7220_IBC_WIDTH_SHIFT));
if (speed == (IPATH_IB_SDR | IPATH_IB_DDR))
dd->ipath_ibcddrctrl |= IBA7220_IBC_SPEED_AUTONEG_MASK |
IBA7220_IBC_IBTA_1_2_MASK;
else
dd->ipath_ibcddrctrl |= speed == IPATH_IB_DDR ?
IBA7220_IBC_SPEED_DDR : IBA7220_IBC_SPEED_SDR;
/*
* Convert from IB-style 1 = 1x, 2 = 4x, 3 = auto
* to chip-centric 0 = 1x, 1 = 4x, 2 = auto
*/
dd->ipath_ibcddrctrl |= (u64)(dd->ipath_link_width_enabled - 1) <<
IBA7220_IBC_WIDTH_SHIFT;
ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcddrctrl,
dd->ipath_ibcddrctrl);
ipath_cdbg(VERBOSE, "setup for IB speed (%x) done\n", speed);
}
/*
* 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_auto_neg(struct ipath_devdata *dd)
{
/*
* 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"
*/
ipath_write_kreg(dd, IPATH_KREG_OFFSET(IBNCModeCtrl),
0x3b9dc07);
dd->ipath_flags |= IPATH_IB_AUTONEG_INPROG;
ipath_autoneg_send(dd, 0);
set_speed_fast(dd, IPATH_IB_DDR);
ipath_toggle_rclkrls(dd);
/* 2 msec is minimum length of a poll cycle */
schedule_delayed_work(&dd->ipath_autoneg_work,
msecs_to_jiffies(2));
}
static int ipath_7220_ib_updown(struct ipath_devdata *dd, int ibup, u64 ibcs)
{
int ret = 0;
u32 ltstate = ipath_ib_linkstate(dd, ibcs);
dd->ipath_link_width_active =
((ibcs >> IBA7220_IBCS_LINKWIDTH_SHIFT) & 1) ?
IB_WIDTH_4X : IB_WIDTH_1X;
dd->ipath_link_speed_active =
((ibcs >> IBA7220_IBCS_LINKSPEED_SHIFT) & 1) ?
IPATH_IB_DDR : IPATH_IB_SDR;
if (!ibup) {
/*
* when link goes down we don't want aeq running, so it
* won't't interfere with IBC training, etc., and we need
* to go back to the static SerDes preset values
*/
if (dd->ipath_x1_fix_tries &&
ltstate <= INFINIPATH_IBCS_LT_STATE_SLEEPQUIET &&
ltstate != INFINIPATH_IBCS_LT_STATE_LINKUP)
dd->ipath_x1_fix_tries = 0;
if (!(dd->ipath_flags & (IPATH_IB_AUTONEG_FAILED |
IPATH_IB_AUTONEG_INPROG)))
set_speed_fast(dd, dd->ipath_link_speed_enabled);
if (!(dd->ipath_flags & IPATH_IB_AUTONEG_INPROG)) {
ipath_cdbg(VERBOSE, "Setting RXEQ defaults\n");
ipath_sd7220_presets(dd);
}
/* this might better in ipath_sd7220_presets() */
ipath_set_relock_poll(dd, ibup);
} else {
if (ipath_compat_ddr_negotiate &&
!(dd->ipath_flags & (IPATH_IB_AUTONEG_FAILED |
IPATH_IB_AUTONEG_INPROG)) &&
dd->ipath_link_speed_active == IPATH_IB_SDR &&
(dd->ipath_link_speed_enabled &
(IPATH_IB_DDR | IPATH_IB_SDR)) ==
(IPATH_IB_DDR | IPATH_IB_SDR) &&
dd->ipath_autoneg_tries < IPATH_AUTONEG_TRIES) {
/* we are SDR, and DDR auto-negotiation enabled */
++dd->ipath_autoneg_tries;
ipath_dbg("DDR negotiation try, %u/%u\n",
dd->ipath_autoneg_tries,
IPATH_AUTONEG_TRIES);
try_auto_neg(dd);
ret = 1; /* no other IB status change processing */
} else if ((dd->ipath_flags & IPATH_IB_AUTONEG_INPROG)
&& dd->ipath_link_speed_active == IPATH_IB_SDR) {
ipath_autoneg_send(dd, 1);
set_speed_fast(dd, IPATH_IB_DDR);
udelay(2);
ipath_toggle_rclkrls(dd);
ret = 1; /* no other IB status change processing */
} else {
if ((dd->ipath_flags & IPATH_IB_AUTONEG_INPROG) &&
(dd->ipath_link_speed_active & IPATH_IB_DDR)) {
ipath_dbg("Got to INIT with DDR autoneg\n");
dd->ipath_flags &= ~(IPATH_IB_AUTONEG_INPROG
| IPATH_IB_AUTONEG_FAILED);
dd->ipath_autoneg_tries = 0;
/* re-enable SDR, for next link down */
set_speed_fast(dd,
dd->ipath_link_speed_enabled);
wake_up(&dd->ipath_autoneg_wait);
} else if (dd->ipath_flags & IPATH_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 different
* device).
*/
ipath_dbg("INIT %sDR after autoneg failure\n",
(dd->ipath_link_speed_active &
IPATH_IB_DDR) ? "D" : "S");
dd->ipath_flags &= ~IPATH_IB_AUTONEG_FAILED;
dd->ipath_ibcddrctrl |=
IBA7220_IBC_IBTA_1_2_MASK;
ipath_write_kreg(dd,
IPATH_KREG_OFFSET(IBNCModeCtrl), 0);
}
}
/*
* if we are in 1X, and are in autoneg width, it
* could be due to an xgxs problem, so if we haven't
* already tried, try twice to get to 4X; if we
* tried, and couldn't, report it, since it will
* probably not be what is desired.
*/
if ((dd->ipath_link_width_enabled & (IB_WIDTH_1X |
IB_WIDTH_4X)) == (IB_WIDTH_1X | IB_WIDTH_4X)
&& dd->ipath_link_width_active == IB_WIDTH_1X
&& dd->ipath_x1_fix_tries < 3) {
if (++dd->ipath_x1_fix_tries == 3)
dev_info(&dd->pcidev->dev,
"IB link is in 1X mode\n");
else {
ipath_cdbg(VERBOSE, "IB 1X in "
"auto-width, try %u to be "
"sure it's really 1X; "
"ltstate %u\n",
dd->ipath_x1_fix_tries,
ltstate);
dd->ipath_f_xgxs_reset(dd);
ret = 1; /* skip other processing */
}
}
if (!ret) {
dd->delay_mult = rate_to_delay
[(ibcs >> IBA7220_IBCS_LINKSPEED_SHIFT) & 1]
[(ibcs >> IBA7220_IBCS_LINKWIDTH_SHIFT) & 1];
ipath_set_relock_poll(dd, ibup);
}
}
if (!ret)
ipath_setup_7220_setextled(dd, ipath_ib_linkstate(dd, ibcs),
ltstate);
return ret;
}
/*
* Handle the empirically determined mechanism for auto-negotiation
* of DDR speed with switches.
*/
static void autoneg_work(struct work_struct *work)
{
struct ipath_devdata *dd;
u64 startms;
u32 lastlts, i;
dd = container_of(work, struct ipath_devdata,
ipath_autoneg_work.work);
startms = jiffies_to_msecs(jiffies);
/*
* 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++) {
lastlts = ipath_ib_linktrstate(dd, dd->ipath_lastibcstat);
if (lastlts == INFINIPATH_IBCS_LT_STATE_POLLQUIET) {
ipath_set_linkstate(dd, IPATH_IB_LINKDOWN_DISABLE);
break;
}
udelay(100);
}
if (!(dd->ipath_flags & IPATH_IB_AUTONEG_INPROG))
goto done; /* we got there early or told to stop */
/* we expect this to timeout */
if (wait_event_timeout(dd->ipath_autoneg_wait,
!(dd->ipath_flags & IPATH_IB_AUTONEG_INPROG),
msecs_to_jiffies(90)))
goto done;
ipath_toggle_rclkrls(dd);
/* we expect this to timeout */
if (wait_event_timeout(dd->ipath_autoneg_wait,
!(dd->ipath_flags & IPATH_IB_AUTONEG_INPROG),
msecs_to_jiffies(1700)))
goto done;
set_speed_fast(dd, IPATH_IB_SDR);
ipath_toggle_rclkrls(dd);
/*
* wait up to 250 msec for link to train and get to INIT at DDR;
* this should terminate early
*/
wait_event_timeout(dd->ipath_autoneg_wait,
!(dd->ipath_flags & IPATH_IB_AUTONEG_INPROG),
msecs_to_jiffies(250));
done:
if (dd->ipath_flags & IPATH_IB_AUTONEG_INPROG) {
ipath_dbg("Did not get to DDR INIT (%x) after %Lu msecs\n",
ipath_ib_state(dd, dd->ipath_lastibcstat),
jiffies_to_msecs(jiffies)-startms);
dd->ipath_flags &= ~IPATH_IB_AUTONEG_INPROG;
if (dd->ipath_autoneg_tries == IPATH_AUTONEG_TRIES) {
dd->ipath_flags |= IPATH_IB_AUTONEG_FAILED;
ipath_dbg("Giving up on DDR until next IB "
"link Down\n");
dd->ipath_autoneg_tries = 0;
}
set_speed_fast(dd, dd->ipath_link_speed_enabled);
}
}
/**
* ipath_init_iba7220_funcs - set up the chip-specific function pointers
* @dd: the infinipath device
*
* This is global, and is called directly at init to set up the
* chip-specific function pointers for later use.
*/
void ipath_init_iba7220_funcs(struct ipath_devdata *dd)
{
dd->ipath_f_intrsetup = ipath_7220_intconfig;
dd->ipath_f_bus = ipath_setup_7220_config;
dd->ipath_f_reset = ipath_setup_7220_reset;
dd->ipath_f_get_boardname = ipath_7220_boardname;
dd->ipath_f_init_hwerrors = ipath_7220_init_hwerrors;
dd->ipath_f_early_init = ipath_7220_early_init;
dd->ipath_f_handle_hwerrors = ipath_7220_handle_hwerrors;
dd->ipath_f_quiet_serdes = ipath_7220_quiet_serdes;
dd->ipath_f_bringup_serdes = ipath_7220_bringup_serdes;
dd->ipath_f_clear_tids = ipath_7220_clear_tids;
dd->ipath_f_put_tid = ipath_7220_put_tid;
dd->ipath_f_cleanup = ipath_setup_7220_cleanup;
dd->ipath_f_setextled = ipath_setup_7220_setextled;
dd->ipath_f_get_base_info = ipath_7220_get_base_info;
dd->ipath_f_free_irq = ipath_7220_free_irq;
dd->ipath_f_tidtemplate = ipath_7220_tidtemplate;
dd->ipath_f_intr_fallback = ipath_7220_intr_fallback;
dd->ipath_f_xgxs_reset = ipath_7220_xgxs_reset;
dd->ipath_f_get_ib_cfg = ipath_7220_get_ib_cfg;
dd->ipath_f_set_ib_cfg = ipath_7220_set_ib_cfg;
dd->ipath_f_config_jint = ipath_7220_config_jint;
dd->ipath_f_config_ports = ipath_7220_config_ports;
dd->ipath_f_read_counters = ipath_7220_read_counters;
dd->ipath_f_get_msgheader = ipath_7220_get_msgheader;
dd->ipath_f_ib_updown = ipath_7220_ib_updown;
/* initialize chip-specific variables */
ipath_init_7220_variables(dd);
}
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