[ofa-general] [PATCH 12/20] IB/ipath - HCA specific code to support IBA7220
Ralph Campbell
ralph.campbell at qlogic.com
Wed Apr 2 15:50:02 PDT 2008
This patch adds the HCA specific code for the IBA7220 HCA.
Signed-off-by: Ralph Campbell <ralph.campbell at qlogic.com>
---
drivers/infiniband/hw/ipath/ipath_iba7220.c | 2571 +++++++++++++++++++++++++++
1 files changed, 2571 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/hw/ipath/ipath_iba7220.c b/drivers/infiniband/hw/ipath/ipath_iba7220.c
new file mode 100644
index 0000000..1b2de2c
--- /dev/null
+++ b/drivers/infiniband/hw/ipath/ipath_iba7220.c
@@ -0,0 +1,2571 @@
+/*
+ * 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, 1);
+}
+
+
+/**
+ * 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,
+ * just cancel the send (if indicated in * sendbuffererror),
+ * count the occurrence, unfreeze (if no other handled
+ * hardware error bits are set), 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) {
+ /* else leave in freeze mode */
+ ipath_write_kreg(dd,
+ dd->ipath_kregs->kr_control,
+ dd->ipath_control);
+ goto bail;
+ }
+ }
+ 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 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) {
+ /* Rev1 chips are prototype. Complain, but allow use */
+ ipath_dev_err(dd, "Unsupported hardware "
+ "revision %u.%u, Contact support at 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;
+#ifdef CONFIG_PCI_MSI
+ 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);
+ }
+#endif
+}
+
+/*
+ * 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 */
+#ifdef CONFIG_PCI_MSI
+ 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");
+#else
+ ipath_dbg("PCI_MSI not configured, using IntX interrupts\n");
+ ipath_enable_intx(pdev);
+#endif
+
+ 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;
+#ifdef CONFIG_PCI_MSI
+ 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:
+#endif
+ 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 = 1; /* reserve a buffer */
+}
+
+
+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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